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Publisher: Oxford University Press   (Total: 409 journals)

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Showing 1 - 200 of 409 Journals sorted alphabetically
ACS Symposium Series     Full-text available via subscription   (Followers: 1, SJR: 0.189, CiteScore: 0)
Acta Biochimica et Biophysica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.79, CiteScore: 2)
Adaptation     Hybrid Journal   (Followers: 9, SJR: 0.143, CiteScore: 0)
Advances in Nutrition     Hybrid Journal   (Followers: 57, SJR: 2.196, CiteScore: 5)
Aesthetic Surgery J.     Hybrid Journal   (Followers: 6, SJR: 1.434, CiteScore: 1)
Aesthetic Surgery J. Open Forum     Open Access  
African Affairs     Hybrid Journal   (Followers: 69, SJR: 1.869, CiteScore: 2)
Age and Ageing     Hybrid Journal   (Followers: 91, SJR: 1.989, CiteScore: 4)
Alcohol and Alcoholism     Hybrid Journal   (Followers: 19, SJR: 1.376, CiteScore: 3)
American Entomologist     Hybrid Journal   (Followers: 8)
American Historical Review     Hybrid Journal   (Followers: 205, SJR: 0.467, CiteScore: 1)
American J. of Agricultural Economics     Hybrid Journal   (Followers: 47, SJR: 2.113, CiteScore: 3)
American J. of Clinical Nutrition     Hybrid Journal   (Followers: 209, SJR: 3.438, CiteScore: 6)
American J. of Epidemiology     Hybrid Journal   (Followers: 208, SJR: 2.713, CiteScore: 3)
American J. of Health-System Pharmacy     Full-text available via subscription   (Followers: 60, SJR: 0.595, CiteScore: 1)
American J. of Hypertension     Hybrid Journal   (Followers: 27, SJR: 1.322, CiteScore: 3)
American J. of Jurisprudence     Hybrid Journal   (Followers: 19, SJR: 0.281, CiteScore: 1)
American J. of Legal History     Full-text available via subscription   (Followers: 10, SJR: 0.116, CiteScore: 0)
American Law and Economics Review     Hybrid Journal   (Followers: 29, SJR: 1.053, CiteScore: 1)
American Literary History     Hybrid Journal   (Followers: 17, SJR: 0.391, CiteScore: 0)
Analysis     Hybrid Journal   (Followers: 24, SJR: 1.038, CiteScore: 1)
Animal Frontiers     Hybrid Journal   (Followers: 1)
Annals of Behavioral Medicine     Hybrid Journal   (Followers: 15, SJR: 1.423, CiteScore: 3)
Annals of Botany     Hybrid Journal   (Followers: 37, SJR: 1.721, CiteScore: 4)
Annals of Oncology     Hybrid Journal   (Followers: 56, SJR: 5.599, CiteScore: 9)
Annals of the Entomological Society of America     Full-text available via subscription   (Followers: 11, SJR: 0.722, CiteScore: 1)
Annals of Work Exposures and Health     Hybrid Journal   (Followers: 36, SJR: 0.728, CiteScore: 2)
Antibody Therapeutics     Open Access  
AoB Plants     Open Access   (Followers: 4, SJR: 1.28, CiteScore: 3)
Applied Economic Perspectives and Policy     Hybrid Journal   (Followers: 16, SJR: 0.858, CiteScore: 2)
Applied Linguistics     Hybrid Journal   (Followers: 59, SJR: 2.987, CiteScore: 3)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1, SJR: 1.241, CiteScore: 1)
Arbitration Intl.     Full-text available via subscription   (Followers: 22)
Arbitration Law Reports and Review     Hybrid Journal   (Followers: 14)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 31, SJR: 0.731, CiteScore: 2)
Aristotelian Society Supplementary Volume     Hybrid Journal   (Followers: 2)
Arthropod Management Tests     Hybrid Journal   (Followers: 2)
Astronomy & Geophysics     Hybrid Journal   (Followers: 45, SJR: 0.146, CiteScore: 0)
Behavioral Ecology     Hybrid Journal   (Followers: 55, SJR: 1.871, CiteScore: 3)
Bioinformatics     Hybrid Journal   (Followers: 384, SJR: 6.14, CiteScore: 8)
Biology Methods and Protocols     Hybrid Journal  
Biology of Reproduction     Full-text available via subscription   (Followers: 10, SJR: 1.446, CiteScore: 3)
Biometrika     Hybrid Journal   (Followers: 20, SJR: 3.485, CiteScore: 2)
BioScience     Hybrid Journal   (Followers: 30, SJR: 2.754, CiteScore: 4)
Bioscience Horizons : The National Undergraduate Research J.     Open Access   (Followers: 3, SJR: 0.146, CiteScore: 0)
Biostatistics     Hybrid Journal   (Followers: 17, SJR: 1.553, CiteScore: 2)
BJA : British J. of Anaesthesia     Hybrid Journal   (Followers: 207, SJR: 2.115, CiteScore: 3)
BJA Education     Hybrid Journal   (Followers: 67)
Brain     Hybrid Journal   (Followers: 73, SJR: 5.858, CiteScore: 7)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 53, SJR: 2.505, CiteScore: 5)
Briefings in Functional Genomics     Hybrid Journal   (Followers: 3, SJR: 2.15, CiteScore: 3)
British J. for the Philosophy of Science     Hybrid Journal   (Followers: 41, SJR: 2.161, CiteScore: 2)
British J. of Aesthetics     Hybrid Journal   (Followers: 24, SJR: 0.508, CiteScore: 1)
British J. of Criminology     Hybrid Journal   (Followers: 608, SJR: 1.828, CiteScore: 3)
British J. of Social Work     Hybrid Journal   (Followers: 88, SJR: 1.019, CiteScore: 2)
British Medical Bulletin     Hybrid Journal   (Followers: 6, SJR: 1.355, CiteScore: 3)
British Yearbook of Intl. Law     Hybrid Journal   (Followers: 35)
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3, SJR: 1.376, CiteScore: 1)
Cambridge J. of Economics     Hybrid Journal   (Followers: 71, SJR: 0.764, CiteScore: 2)
Cambridge J. of Regions, Economy and Society     Hybrid Journal   (Followers: 12, SJR: 2.438, CiteScore: 4)
Cambridge Quarterly     Hybrid Journal   (Followers: 10, SJR: 0.104, CiteScore: 0)
Capital Markets Law J.     Hybrid Journal   (Followers: 2, SJR: 0.222, CiteScore: 0)
Carcinogenesis     Hybrid Journal   (Followers: 2, SJR: 2.135, CiteScore: 5)
Cardiovascular Research     Hybrid Journal   (Followers: 15, SJR: 3.002, CiteScore: 5)
Cerebral Cortex     Hybrid Journal   (Followers: 54, SJR: 3.892, CiteScore: 6)
CESifo Economic Studies     Hybrid Journal   (Followers: 24, SJR: 0.483, CiteScore: 1)
Chemical Senses     Hybrid Journal   (Followers: 1, SJR: 1.42, CiteScore: 3)
Children and Schools     Hybrid Journal   (Followers: 7, SJR: 0.246, CiteScore: 0)
Chinese J. of Comparative Law     Hybrid Journal   (Followers: 5, SJR: 0.412, CiteScore: 0)
Chinese J. of Intl. Law     Hybrid Journal   (Followers: 24, SJR: 0.329, CiteScore: 0)
Chinese J. of Intl. Politics     Hybrid Journal   (Followers: 11, SJR: 1.392, CiteScore: 2)
Christian Bioethics: Non-Ecumenical Studies in Medical Morality     Hybrid Journal   (Followers: 10, SJR: 0.183, CiteScore: 0)
Classical Receptions J.     Hybrid Journal   (Followers: 29, SJR: 0.123, CiteScore: 0)
Clean Energy     Open Access   (Followers: 1)
Clinical Infectious Diseases     Hybrid Journal   (Followers: 75, SJR: 5.051, CiteScore: 5)
Communication Theory     Hybrid Journal   (Followers: 26, SJR: 2.424, CiteScore: 3)
Communication, Culture & Critique     Hybrid Journal   (Followers: 28, SJR: 0.222, CiteScore: 1)
Community Development J.     Hybrid Journal   (Followers: 28, SJR: 0.268, CiteScore: 1)
Computer J.     Hybrid Journal   (Followers: 9, SJR: 0.319, CiteScore: 1)
Conservation Physiology     Open Access   (Followers: 3, SJR: 1.818, CiteScore: 3)
Contemporary Women's Writing     Hybrid Journal   (Followers: 10, SJR: 0.121, CiteScore: 0)
Contributions to Political Economy     Hybrid Journal   (Followers: 6, SJR: 0.906, CiteScore: 1)
Critical Values     Full-text available via subscription  
Current Developments in Nutrition     Open Access   (Followers: 4)
Current Legal Problems     Hybrid Journal   (Followers: 29)
Current Zoology     Full-text available via subscription   (Followers: 4, SJR: 1.164, CiteScore: 2)
Database : The J. of Biological Databases and Curation     Open Access   (Followers: 9, SJR: 1.791, CiteScore: 3)
Digital Scholarship in the Humanities     Hybrid Journal   (Followers: 14, SJR: 0.259, CiteScore: 1)
Diplomatic History     Hybrid Journal   (Followers: 24, SJR: 0.45, CiteScore: 1)
DNA Research     Open Access   (Followers: 5, SJR: 2.866, CiteScore: 6)
Dynamics and Statistics of the Climate System     Open Access   (Followers: 4)
Early Music     Hybrid Journal   (Followers: 17, SJR: 0.139, CiteScore: 0)
Econometrics J.     Hybrid Journal   (Followers: 32, SJR: 2.926, CiteScore: 1)
Economic J.     Hybrid Journal   (Followers: 118, SJR: 5.161, CiteScore: 3)
Economic Policy     Hybrid Journal   (Followers: 49, SJR: 3.584, CiteScore: 3)
ELT J.     Hybrid Journal   (Followers: 25, SJR: 0.942, CiteScore: 1)
English Historical Review     Hybrid Journal   (Followers: 57, SJR: 0.612, CiteScore: 1)
English: J. of the English Association     Hybrid Journal   (Followers: 21, SJR: 0.1, CiteScore: 0)
Environmental Entomology     Full-text available via subscription   (Followers: 12, SJR: 0.818, CiteScore: 2)
Environmental Epigenetics     Open Access   (Followers: 2)
Environmental History     Hybrid Journal   (Followers: 26, SJR: 0.408, CiteScore: 1)
EP-Europace     Hybrid Journal   (Followers: 3, SJR: 2.748, CiteScore: 4)
Epidemiologic Reviews     Hybrid Journal   (Followers: 9, SJR: 4.505, CiteScore: 8)
ESHRE Monographs     Hybrid Journal  
Essays in Criticism     Hybrid Journal   (Followers: 22, SJR: 0.113, CiteScore: 0)
European Heart J.     Hybrid Journal   (Followers: 68, SJR: 9.315, CiteScore: 9)
European Heart J. - Cardiovascular Imaging     Hybrid Journal   (Followers: 10, SJR: 3.625, CiteScore: 3)
European Heart J. - Cardiovascular Pharmacotherapy     Full-text available via subscription   (Followers: 3)
European Heart J. - Quality of Care and Clinical Outcomes     Hybrid Journal  
European Heart J. : Case Reports     Open Access   (Followers: 1)
European Heart J. Supplements     Hybrid Journal   (Followers: 8, SJR: 0.223, CiteScore: 0)
European J. of Cardio-Thoracic Surgery     Hybrid Journal   (Followers: 9, SJR: 1.681, CiteScore: 2)
European J. of Intl. Law     Hybrid Journal   (Followers: 216, SJR: 0.694, CiteScore: 1)
European J. of Orthodontics     Hybrid Journal   (Followers: 5, SJR: 1.279, CiteScore: 2)
European J. of Public Health     Hybrid Journal   (Followers: 21, SJR: 1.36, CiteScore: 2)
European Review of Agricultural Economics     Hybrid Journal   (Followers: 10, SJR: 1.172, CiteScore: 2)
European Review of Economic History     Hybrid Journal   (Followers: 30, SJR: 0.702, CiteScore: 1)
European Sociological Review     Hybrid Journal   (Followers: 44, SJR: 2.728, CiteScore: 3)
Evolution, Medicine, and Public Health     Open Access   (Followers: 12)
Family Practice     Hybrid Journal   (Followers: 15, SJR: 1.018, CiteScore: 2)
Fems Microbiology Ecology     Hybrid Journal   (Followers: 19, SJR: 1.492, CiteScore: 4)
Fems Microbiology Letters     Hybrid Journal   (Followers: 29, SJR: 0.79, CiteScore: 2)
Fems Microbiology Reviews     Hybrid Journal   (Followers: 36, SJR: 7.063, CiteScore: 13)
Fems Yeast Research     Hybrid Journal   (Followers: 14, SJR: 1.308, CiteScore: 3)
Food Quality and Safety     Open Access   (Followers: 1)
Foreign Policy Analysis     Hybrid Journal   (Followers: 25, SJR: 1.425, CiteScore: 1)
Forest Science     Hybrid Journal   (Followers: 8, SJR: 0.89, CiteScore: 2)
Forestry: An Intl. J. of Forest Research     Hybrid Journal   (Followers: 16, SJR: 1.133, CiteScore: 3)
Forum for Modern Language Studies     Hybrid Journal   (Followers: 6, SJR: 0.104, CiteScore: 0)
French History     Hybrid Journal   (Followers: 35, SJR: 0.118, CiteScore: 0)
French Studies     Hybrid Journal   (Followers: 21, SJR: 0.148, CiteScore: 0)
French Studies Bulletin     Hybrid Journal   (Followers: 10, SJR: 0.152, CiteScore: 0)
Gastroenterology Report     Open Access   (Followers: 3)
Genome Biology and Evolution     Open Access   (Followers: 17, SJR: 2.578, CiteScore: 4)
Geophysical J. Intl.     Hybrid Journal   (Followers: 38, SJR: 1.506, CiteScore: 3)
German History     Hybrid Journal   (Followers: 24, SJR: 0.161, CiteScore: 0)
GigaScience     Open Access   (Followers: 6, SJR: 5.022, CiteScore: 7)
Global Summitry     Hybrid Journal   (Followers: 1)
Glycobiology     Hybrid Journal   (Followers: 12, SJR: 1.493, CiteScore: 3)
Health and Social Work     Hybrid Journal   (Followers: 60, SJR: 0.388, CiteScore: 1)
Health Education Research     Hybrid Journal   (Followers: 15, SJR: 0.854, CiteScore: 2)
Health Policy and Planning     Hybrid Journal   (Followers: 25, SJR: 1.512, CiteScore: 2)
Health Promotion Intl.     Hybrid Journal   (Followers: 23, SJR: 0.812, CiteScore: 2)
History Workshop J.     Hybrid Journal   (Followers: 33, SJR: 1.278, CiteScore: 1)
Holocaust and Genocide Studies     Hybrid Journal   (Followers: 29, SJR: 0.105, CiteScore: 0)
Human Communication Research     Hybrid Journal   (Followers: 15, SJR: 2.146, CiteScore: 3)
Human Molecular Genetics     Hybrid Journal   (Followers: 9, SJR: 3.555, CiteScore: 5)
Human Reproduction     Hybrid Journal   (Followers: 74, SJR: 2.643, CiteScore: 5)
Human Reproduction Open     Open Access   (Followers: 1)
Human Reproduction Update     Hybrid Journal   (Followers: 20, SJR: 5.317, CiteScore: 10)
Human Rights Law Review     Hybrid Journal   (Followers: 64, SJR: 0.756, CiteScore: 1)
ICES J. of Marine Science: J. du Conseil     Hybrid Journal   (Followers: 61, SJR: 1.591, CiteScore: 3)
ICSID Review : Foreign Investment Law J.     Hybrid Journal   (Followers: 12)
ILAR J.     Hybrid Journal   (Followers: 3, SJR: 1.732, CiteScore: 4)
IMA J. of Applied Mathematics     Hybrid Journal   (SJR: 0.679, CiteScore: 1)
IMA J. of Management Mathematics     Hybrid Journal   (SJR: 0.538, CiteScore: 1)
IMA J. of Mathematical Control and Information     Hybrid Journal   (Followers: 2, SJR: 0.496, CiteScore: 1)
IMA J. of Numerical Analysis - advance access     Hybrid Journal   (SJR: 1.987, CiteScore: 2)
Industrial and Corporate Change     Hybrid Journal   (Followers: 10, SJR: 1.792, CiteScore: 2)
Industrial Law J.     Hybrid Journal   (Followers: 44, SJR: 0.249, CiteScore: 1)
Inflammatory Bowel Diseases     Hybrid Journal   (Followers: 45, SJR: 2.511, CiteScore: 4)
Information and Inference     Free  
Innovation in Aging     Open Access   (Followers: 1)
Insect Systematics and Diversity     Hybrid Journal  
Integrative and Comparative Biology     Hybrid Journal   (Followers: 10, SJR: 1.319, CiteScore: 2)
Integrative Biology     Full-text available via subscription   (Followers: 5, SJR: 1.36, CiteScore: 3)
Integrative Organismal Biology     Open Access  
Interacting with Computers     Hybrid Journal   (Followers: 10, SJR: 0.292, CiteScore: 1)
Interactive CardioVascular and Thoracic Surgery     Hybrid Journal   (Followers: 7, SJR: 0.762, CiteScore: 1)
Intl. Affairs     Hybrid Journal   (Followers: 68, SJR: 1.505, CiteScore: 3)
Intl. Data Privacy Law     Hybrid Journal   (Followers: 26)
Intl. Health     Hybrid Journal   (Followers: 6, SJR: 0.851, CiteScore: 2)
Intl. Immunology     Hybrid Journal   (Followers: 3, SJR: 2.167, CiteScore: 4)
Intl. J. for Quality in Health Care     Hybrid Journal   (Followers: 37, SJR: 1.348, CiteScore: 2)
Intl. J. of Constitutional Law     Hybrid Journal   (Followers: 62, SJR: 0.601, CiteScore: 1)
Intl. J. of Epidemiology     Hybrid Journal   (Followers: 270, SJR: 3.969, CiteScore: 5)
Intl. J. of Law and Information Technology     Hybrid Journal   (Followers: 5, SJR: 0.202, CiteScore: 1)
Intl. J. of Law, Policy and the Family     Hybrid Journal   (Followers: 25, SJR: 0.223, CiteScore: 1)
Intl. J. of Lexicography     Hybrid Journal   (Followers: 9, SJR: 0.285, CiteScore: 1)
Intl. J. of Low-Carbon Technologies     Open Access   (Followers: 1, SJR: 0.403, CiteScore: 1)
Intl. J. of Neuropsychopharmacology     Open Access   (Followers: 3, SJR: 1.808, CiteScore: 4)
Intl. J. of Public Opinion Research     Hybrid Journal   (Followers: 11, SJR: 1.545, CiteScore: 1)
Intl. J. of Refugee Law     Hybrid Journal   (Followers: 40, SJR: 0.389, CiteScore: 1)
Intl. J. of Transitional Justice     Hybrid Journal   (Followers: 13, SJR: 0.724, CiteScore: 2)
Intl. Mathematics Research Notices     Hybrid Journal   (Followers: 1, SJR: 2.168, CiteScore: 1)
Intl. Political Sociology     Hybrid Journal   (Followers: 40, SJR: 1.465, CiteScore: 3)
Intl. Relations of the Asia-Pacific     Hybrid Journal   (Followers: 24, SJR: 0.401, CiteScore: 1)
Intl. Studies Perspectives     Hybrid Journal   (Followers: 9, SJR: 0.983, CiteScore: 1)
Intl. Studies Quarterly     Hybrid Journal   (Followers: 53, SJR: 2.581, CiteScore: 2)
Intl. Studies Review     Hybrid Journal   (Followers: 24, SJR: 1.201, CiteScore: 1)
ISLE: Interdisciplinary Studies in Literature and Environment     Hybrid Journal   (Followers: 2, SJR: 0.15, CiteScore: 0)
ITNOW     Hybrid Journal   (Followers: 1, SJR: 0.103, CiteScore: 0)
J. of African Economies     Hybrid Journal   (Followers: 18, SJR: 0.533, CiteScore: 1)
J. of American History     Hybrid Journal   (Followers: 50, SJR: 0.297, CiteScore: 1)
J. of Analytical Toxicology     Hybrid Journal   (Followers: 14, SJR: 1.065, CiteScore: 2)
J. of Antimicrobial Chemotherapy     Hybrid Journal   (Followers: 16, SJR: 2.419, CiteScore: 4)
J. of Antitrust Enforcement     Hybrid Journal   (Followers: 1)
J. of Applied Poultry Research     Hybrid Journal   (Followers: 5, SJR: 0.585, CiteScore: 1)
J. of Biochemistry     Hybrid Journal   (Followers: 43, SJR: 1.226, CiteScore: 2)
J. of Breast Imaging     Full-text available via subscription   (Followers: 2)

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Similar Journals
Journal Cover
Journal of Antimicrobial Chemotherapy
Journal Prestige (SJR): 2.419
Citation Impact (citeScore): 4
Number of Followers: 16  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0305-7453 - ISSN (Online) 1460-2091
Published by Oxford University Press Homepage  [409 journals]
  • Bacterial metabolism-inspired molecules to modulate antibiotic efficacy
    • Authors: Liu Y; Li R, Xiao X, et al.
      Pages: 3409 - 3417
      Abstract: AbstractThe decreasing antibiotic susceptibility of bacterial pathogens calls for novel antimicrobial therapies. Traditional screening pathways based on drug–target interaction have gradually reached the stage of diminishing returns. Thus, novel strategies are urgently needed in the fight against antibiotic-refractory bacteria, particularly for tolerant bacteria. Recently, evidence has accumulated demonstrating that microbial changes caused by bacterial metabolic processes significantly modulate antibiotic killing. A better understanding of these bacterial metabolic processes is indicating a need to screen novel metabolic modulators as potential antibiotic adjuvants. In this review, we describe the state of our current knowledge about how these bacterial metabolism-inspired molecules affect antibiotic efficacy, including potentiation and inhibition activity. In addition, the challenges faced and prospects for bringing them into clinic are also discussed. These examples may provide candidates or targets for the development of novel antibiotic adjuvants.
      PubDate: Tue, 18 Jun 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz230
      Issue No: Vol. 74, No. 12 (2019)
       
  • Are nursing infusion practices delivering full-dose antimicrobial
           treatment'
    • Authors: Rout J; Essack S, Brysiewicz P.
      Pages: 3418 - 3422
      Abstract: AbstractAntimicrobial stewardship (AMS) has developed over the past decade as a critical tool to promote the appropriate use of antimicrobials in order to contain antimicrobial resistance (AMR) and conserve antimicrobial medicines. Current literature supports the role of the nurse in AMR, with a strong focus on the responsibilities of the nurse in infection prevention and control (IPC), both in the formal role of the IPC nurse specialist, and the more general IPC role of the bedside nurse. There is also growing support for the collaborative role of the nurse in the multidisciplinary AMS team. There is, however, very little literature examining the clinical practice role of the nurse in AMS. In this discussion, we contend that nursing practice may unknowingly contribute to AMR owing to varying methods of administration of intermittent intravenous infusions, resulting in under-dosing of antimicrobial medicines.
      PubDate: Sun, 25 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz365
      Issue No: Vol. 74, No. 12 (2019)
       
  • Efficacy and safety of tigecycline in treatment of pneumonia caused by MDR
           Acinetobacter baumannii: a systematic review and meta-analysis
    • Authors: Mei H; Yang T, Wang J, et al.
      Pages: 3423 - 3431
      Abstract: AbstractBackgroundUse of tigecycline in treating MDR Acinetobacter baumannii (MDRAB) remains controversial.ObjectivesTo comprehensively assess the safety and efficacy of tigecycline in pneumonia caused by Acinetobacter baumannii.MethodsPubMed, Embase, Web of Science and Cochrane library databases were searched up to 12 March 2019. Studies were included if they compared tigecycline-based regimens with other antibiotic regimens for treating AB pulmonary infections and we pooled the clinical outcomes, microbiological response, adverse events or mortality.ResultsOne prospective study and nine retrospective studies were included in this meta-analysis. The results showed similar clinical cure rates (OR = 1.04, 95% CI = 0.60–1.81; P = 0.89) and mortality rates (OR = 1.11, 95% CI = 0.65–1.89; P = 0.71) comparing tigecycline groups with the control groups. However, a significantly lower microbiological eradication rate was found in the tigecycline groups (OR = 0.43, 95% CI = 0.27–0.66; P = 0.0001). Incidence of nephrotoxicity in tigecycline-based regimens was significantly lower than in colistin-based regimens (OR = 0.34, 95% CI = 0.16–0.74, I2 = 35%, P = 0.006). There were no randomized controlled trials (RCTs) included; incomplete safety data and regional bias caused by the majority of the studies originating in China are the main limitations of this meta-analysis.ConclusionsTigecycline can be used for treating MDRAB pulmonary infections owing to efficacy similar to that of other antibiotics. Moreover, tigecycline did not show a higher risk of mortality. Considering the lower microbiological eradication rate for tigecycline, which is likely to induce antimicrobial resistance, well-designed RCTs for high-dose tigecycline in treating pneumonia caused by AB are still needed.
      PubDate: Sat, 03 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz337
      Issue No: Vol. 74, No. 12 (2019)
       
  • Identification of the crucial parameters regarding the efficacy of
           ribavirin therapy in Crimean–Congo haemorrhagic fever (CCHF) patients: a
           systematic review and meta-analysis
    • Authors: Arab-Bafrani Z; Jabbari A, Mostakhdem Hashemi M, et al.
      Pages: 3432 - 3439
      Abstract: AbstractObjectivesRecently, ribavirin has been suggested as a therapeutic approach in Crimean–Congo haemorrhagic fever (CCHF) patients; however, there are controversial findings about its efficacy. In the current study, a meta-analysis was systematically performed to assess the effectiveness of ribavirin administration regarding CCHF patient survival and to explore the most important influential parameters for its efficacy.MethodsAll of the outcomes of the clinically studied CCHF patients who were treated with ribavirin were included in the meta-analysis.ResultsOverall, 24 studies met our criteria. Although the studies did not have high quality there was no heterogeneity and publication bias across studies. The results indicated that the administration of ribavirin to CCHF patients significantly decreased the mortality rate (by 1.7-fold) compared with those who did not receive this medication. Furthermore, it was found that the prescription of ribavirin in the initial phase of disease was more effective, and a delay in the start of treatment resulted in a 1.6-fold increase in mortality rate. In addition, interventional therapy resulted in an ∼2.3-fold reduction in the mortality rate of those who received ribavirin along with corticosteroids compared with those who were treated with ribavirin monotherapy.ConclusionsThis meta-analysis reveals that ribavirin should be considered as a crucial antiviral drug in the therapeutic approach used for CCHF patients, especially in early phases of the disease. Additionally, it seems that the administration of corticosteroids alongside ribavirin can play an effective role in alleviation of the disease status, particularly in haemorrhagic phases.
      PubDate: Thu, 01 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz328
      Issue No: Vol. 74, No. 12 (2019)
       
  • Variability of the HIV-1 3′ polypurine tract (3′PPT) region and
           implication in integrase inhibitor resistance
    • Authors: Malet I; Delelis O, Nguyen T, et al.
      Pages: 3440 - 3444
      Abstract: AbstractBackgroundIntegrase strand-transfer inhibitors (INSTIs) are efficient at impairing retroviral integration, which is a critical step in HIV-1 replication. To date, resistance to these compounds has been explained by mutations in the viral protein integrase, which catalyses the integration step. Recently, it has been shown that selected mutations in the 3′ polypurine tract (3′PPT), a sequence involved in the reverse transcription mechanism, result in high-level resistance to these compounds. This observation was reinforced by the description of a patient who failed INSTI treatment by selecting mutations in the 3′PPT sequence.MethodsSequences of the 3′PPT region were analysed in 30706 treatment-naive patients from the public Los Alamos database belonging to six different subtypes and, in parallel, in 107 patients failing INSTI treatment.ResultsThe analysis showed that the sequences of patients failing INSTI treatment, in the same way as those of treatment-naive patients, are very well conserved regardless of the presence or absence of resistance mutations in the integrase gene.ConclusionsThis study confirms that the selection of a mutation in the 3′PPT region conferring high-level resistance to INSTIs is a rare event. It would require a particular in vivo context and especially a long enough time to be selected, this exposure time being generally reduced by the rapid change of treatment in the case of virological failure. Larger-scale studies in patients with INSTI treatment failure are needed to determine whether the 3′PPT region can play an important role in vivo in INSTI resistance.
      PubDate: Thu, 05 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz377
      Issue No: Vol. 74, No. 12 (2019)
       
  • Phenotypic and genotypic characterization of linezolid-resistant
           Enterococcus faecium from the USA and Pakistan
    • Authors: Wardenburg K; Potter R, D’Souza A, et al.
      Pages: 3445 - 3452
      Abstract: AbstractObjectivesLinezolid is an important therapeutic option for the treatment of infections caused by VRE. Linezolid is a synthetic antimicrobial and resistance to this antimicrobial agent remains relatively rare. As a result, data on the comparative genomics of linezolid resistance determinants in Enterococcus faecium are relatively sparse.MethodsTo address this knowledge gap in E. faecium, we deployed phenotypic antibiotic susceptibility testing and Illumina WGS on hospital surface (environmental) and clinical isolates from the USA and Pakistan.ResultsWe found complete concordance between isolate source country and mechanism of linezolid resistance, with all the US isolates possessing a 23S rRNA gene mutation and the Pakistan isolates harbouring two to three acquired antibiotic resistance genes. These resistance genes include the recently elucidated efflux-pump genes optrA and poxtA and a novel cfr-like variant. Although there was no difference in the linezolid MIC between the US and Pakistan isolates, there was a significant difference in the geometric mean of the MIC between the Pakistan isolates that had two versus three of the acquired antibiotic resistance genes. In five of the Pakistan E. faecium that possessed all three of the resistance genes, we found no difference in the local genetic context of poxtA and the cfr-like gene, but we identified different genetic contexts surrounding optrA.ConclusionsThese results demonstrate that E. faecium from different geographical regions employ alternative strategies to counter selective pressure of increasing clinical linezolid use.
      PubDate: Fri, 23 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz367
      Issue No: Vol. 74, No. 12 (2019)
       
  • Staphylococcus aureus from hospital-acquired pneumonia from an Italian
           nationwide survey: activity of ceftobiprole and other anti-staphylococcal
           agents, and molecular epidemiology of methicillin-resistant isolates
    • Authors: Antonelli A; Giani T, Coppi M, et al.
      Pages: 3453 - 3461
      Abstract: AbstractObjectivesTo determine the prevalence of Staphylococcus aureus from hospital-acquired pneumonia (HAP) in Italy and the susceptibility to ceftobiprole and comparators of MSSA and MRSA isolates. A secondary objective was to characterize the clonality and acquired resistance and virulence genes of MRSA.MethodsConsecutive non-replicate isolates from HAP were collected from 13 laboratories distributed across Italy, from January to May 2016. Antimicrobial susceptibility testing was performed by broth microdilution, and results were interpreted according to the EUCAST breakpoints. All MRSA isolates were subjected to WGS using an Illumina platform. Clonality and resistance and virulence gene content were investigated with bioinformatics tools.ResultsAmong 333 isolates from HAP, S. aureus was the third most common pathogen (18.6%). The proportion of MRSA was 40.3%. Susceptibility to ceftobiprole was 100% for MSSA and 95.5% for MRSA. Lower susceptibility rates of 78.4% and 94.6% in MSSA and 36.4% and 12.1% in MRSA isolates were observed for erythromycin and levofloxacin, respectively. The MRSA from HAP mostly belonged to clonal complex (CC) 22 (47.0%), CC5 (25.8%) and CC8 (15.2%), with a minority of other lineages (ST1, ST6, ST7, ST30, ST152 and ST398). Acquired resistance and virulence genes in most cases exhibited a clonal distribution. The three ceftobiprole-resistant isolates exhibited an MIC of 4 mg/L and belonged to ST228-MRSA-I of CC5.ConclusionsS. aureus is an important cause of HAP in Italy. Ceftobiprole exhibited good in vitro activity against S. aureus isolated from HAP, including MRSA. A trend to replacement of ST228 with ST22 was noticed compared with previous studies.
      PubDate: Fri, 06 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz371
      Issue No: Vol. 74, No. 12 (2019)
       
  • Celecoxib potentiates antibiotic uptake by altering membrane potential and
           permeability in Staphylococcus aureus
    • Authors: Varma G; Kummari G, Paik P, et al.
      Pages: 3462 - 3472
      Abstract: AbstractBackgroundWe have shown previously that celecoxib enhances the antibacterial effect of antibiotics and has sensitized drug-resistant bacteria to antibiotics at low concentrations using in vitro and in vivo model systems and also using clinically isolated ESKAPE pathogens.ObjectivesTo identify the mechanism of action of celecoxib in potentiating the effect of antibiotics on bacteria.MethodsToxicogenomic expression analysis of Staphylococcus aureus in the presence or absence of ampicillin, celecoxib or both was carried out by microarray followed by validation of microarray results by flow cytometry and real-time PCR analysis, cocrystal development and analysis.ResultsThe RNA expression map clearly indicated a change in the global transcriptome of S. aureus in the presence of cells treated with ampicillin alone, which was similar to that of celecoxib-treated cells in co-treated cells. Several essential, non-essential and virulence genes such as α-haemolysin (HLA), enterotoxins and β-lactamase were differentially regulated in co-treated cells. Further detailed analysis of the expression data indicated that the ion transporters and enzymes of the lipid biosynthesis pathway were down-regulated in co-treated cells leading to decreased membrane permeability and membrane potential. Cocrystal studies using Powder-X-Ray Diffraction (PXRD) and differential scanning calorimetry (DSC) indicated interactions between celecoxib and ampicillin, which might help in the entry of antibiotics.ConclusionsAlthough further studies are warranted, here we report that celecoxib alters membrane potential and permeability, specifically by affecting the Na+/K+ ion transporter, and thereby increases the uptake of ampicillin by S. aureus.
      PubDate: Sat, 05 Oct 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz391
      Issue No: Vol. 74, No. 12 (2019)
       
  • Molecular characterization of carbapenem-resistant Acinetobacter baumannii
           using WGS revealed missed transmission events in Germany from 2012–15
    • Authors: Eigenbrod T; Reuter S, Gross A, et al.
      Pages: 3473 - 3480
      Abstract: AbstractBackgroundInfection and colonization with multi-resistant Acinetobacter baumannii causes therapeutic and economic problems in the nosocomial setting. Due to the sensitivity issue of screening schemes for A. baumannii, it is difficult to implement adequate transmission prevention measures. The high discriminatory power of WGS for transmission-chain analysis provides us with the necessary tool to study and identify transmission events. We retrospectively sequenced and analysed 39 A. baumannii isolates from 2012–15 to search for possible missed transmission events.MethodsMolecular typing by WGS was performed for non-repetitive (n=39) carbapenem-resistant A. baumannii. Retrospective assessment of patient records was performed to investigate and confirm possible transmission events.ResultsBetween July 2012 and September 2015, A. baumannii was isolated from 268 patients, of which 16% (42/268) were carbapenem resistant. Thirty-nine of these isolates were recoverable and sequenced. Fifteen percent (6/39) of these were resistant to all antibiotics tested. Most isolates belong to the circulating IC2 clonal type. SNP analysis revealed four potential outbreak clusters. Two of these clusters showed high concordance with the local spatio-temporal epidemiology, suggesting that transmission events were very likely.ConclusionsOur data suggest that there were two independent transmission events, which would have been missed by conventional MLST owing to high clonality. The routine implementation of WGS can optimize surveillance and initiation of suitable containment measures. In addition, emerging resistance to salvage therapy is a major therapeutic problem and should be monitored closely.
      PubDate: Sat, 31 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz360
      Issue No: Vol. 74, No. 12 (2019)
       
  • Development of an algorithm to discriminate between plasmid- and
           chromosomal-mediated AmpC β-lactamase production in Escherichia coli by
           elaborate phenotypic and genotypic characterization
    • Authors: Coolen J; den Drijver E, Kluytmans J, et al.
      Pages: 3481 - 3488
      Abstract: AbstractObjectivesAmpC-β-lactamase production is an under-recognized antibiotic resistance mechanism that renders Gram-negative bacteria resistant to common β-lactam antibiotics, similar to the well-known ESBLs. For infection control purposes, it is important to be able to discriminate between plasmid-mediated AmpC (pAmpC) production and chromosomal-mediated AmpC (cAmpC) hyperproduction in Gram-negative bacteria as pAmpC requires isolation precautions to minimize the risk of horizontal gene transmission. Detecting pAmpC in Escherichia coli is challenging, as both pAmpC production and cAmpC hyperproduction may lead to third-generation cephalosporin resistance.MethodsWe tested a collection of E. coli strains suspected to produce AmpC. Elaborate susceptibility testing for third-generation cephalosporins, WGS and machine learning were used to develop an algorithm to determine ampC genotypes in E. coli. WGS was applied to detect pampC genes, cAmpC hyperproducers and STs.ResultsIn total, 172 E. coli strains (n=75 ST) were divided into a training set and two validation sets. Ninety strains were pampC positive, the predominant gene being blaCMY-2 (86.7%), followed by blaDHA-1 (7.8%), and 59 strains were cAmpC hyperproducers. The algorithm used a cefotaxime MIC value above 6 mg/L to identify pampC-positive E. coli and an MIC value of 0.5 mg/L to discriminate between cAmpC-hyperproducing and non-cAmpC-hyperproducing E. coli strains. Accuracy was 0.88 (95% CI=0.79–0.94) on the training set, 0.79 (95% CI=0.64–0.89) on validation set 1 and 0.85 (95% CI=0.71–0.94) on validation set 2.ConclusionsThis approach resulted in a pragmatic algorithm for differentiating ampC genotypes in E. coli based on phenotypic susceptibility testing.
      PubDate: Sun, 25 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz362
      Issue No: Vol. 74, No. 12 (2019)
       
  • Emergence of NDM-producing Klebsiella pneumoniae and Escherichia coli in
           Spain: phylogeny, resistome, virulence and plasmids encoding blaNDM-like
           genes as determined by WGS
    • Authors: Pérez-Vázquez M; Sola Campoy P, Ortega A, et al.
      Pages: 3489 - 3496
      Abstract: AbstractObjectivesNDM carbapenemases have spread worldwide. However, little information exists about the impact of NDM-producing Enterobacteriaceae in Spain. By WGS, we sought to elucidate the population structure of NDM-like-producing Klebsiella pneumoniae and Escherichia coli in Spain and to determine the plasmids harbouring blaNDM-like genes.MethodsHigh-resolution SNP typing, core-genome MLST and plasmid reconstruction (PlasmidID) were performed on 59 NDM-like-producing K. pneumoniae and 8 NDM-like-producing E. coli isolated over an 8 year period in Spain.ResultsFive major epidemic clones of NDM-producing K. pneumoniae caused five important nationwide outbreaks: ST437/NDM-7, ST437/NDM-1, ST147/NDM-1, ST11/NDM-1 and ST101/NDM-1; in contrast, the spread of NDM-producing E. coli was polyclonal. Three blaNDM types were identified: blaNDM-1, 61.2%; blaNDM-7, 32.8%; and blaNDM-5, 6%. Five K. pneumoniae isolates co-produced other carbapenemases (three blaOXA-48 and two blaVIM-1). The average number of acquired resistance genes was higher in K. pneumoniae than in E. coli. The plasmids encoding blaNDM-like genes belonged to IncFII, IncFIB, IncX3, IncR, IncN and IncC types, of which IncF, IncR and IncC were associated with MDR. The genetic surroundings of blaNDM-like genes showed a highly variable region upstream of ISAba125.ConclusionsIn recent years NDM-producing K. pneumoniae and E. coli have emerged in Spain; the spread of a few high-risk K. pneumoniae clones such as ST437/NDM-7, ST437/NDM-1, ST147/NDM-1, ST11/NDM-1 and ST101/NDM-1 have caused several interregional outbreaks. In contrast, the spread of NDM-producing E. coli has been polyclonal. Plasmid types IncFII, IncFIB, IncX3, IncR, IncN and IncC carried blaNDM, and the same IncX3 plasmid was detected in K. pneumoniae and E. coli.
      PubDate: Tue, 03 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz366
      Issue No: Vol. 74, No. 12 (2019)
       
  • Evaluation of in vitro activity of ceftazidime/avibactam and
           ceftolozane/tazobactam against MDR Pseudomonas aeruginosa isolates from
           Qatar
    • Authors: Sid Ahmed M; Abdel Hadi H, Hassan A, et al.
      Pages: 3497 - 3504
      Abstract: AbstractObjectivesTo investigate the in vitro activity of ceftazidime/avibactam and ceftolozane/tazobactam against clinical isolates of MDR Pseudomonas aeruginosa from Qatar, as well as the mechanisms of resistance.MethodsMDR P. aeruginosa isolated between October 2014 and September 2015 from all public hospitals in Qatar were included. The BD PhoenixTM system was used for identification and initial antimicrobial susceptibility testing, while Liofilchem MIC Test Strips (Liofilchem, Roseto degli Abruzzi, Italy) were used for confirmation of ceftazidime/avibactam and ceftolozane/tazobactam susceptibility. Ten ceftazidime/avibactam- and/or ceftolozane/tazobactam-resistant isolates were randomly selected for WGS.ResultsA total of 205 MDR P. aeruginosa isolates were included. Of these, 141 (68.8%) were susceptible to ceftazidime/avibactam, 129 (62.9%) were susceptible to ceftolozane/tazobactam, 121 (59.0%) were susceptible to both and 56 (27.3%) were susceptible to neither. Twenty (9.8%) isolates were susceptible to ceftazidime/avibactam but not to ceftolozane/tazobactam and only 8 (3.9%) were susceptible to ceftolozane/tazobactam but not to ceftazidime/avibactam. Less than 50% of XDR isolates were susceptible to ceftazidime/avibactam or ceftolozane/tazobactam. The 10 sequenced isolates belonged to six different STs and all produced AmpC and OXA enzymes; 5 (50%) produced ESBL and 4 (40%) produced VIM enzymes.ConclusionsMDR P. aeruginosa susceptibility rates to ceftazidime/avibactam and ceftolozane/tazobactam were higher than those to all existing antipseudomonal agents, except colistin, but were less than 50% in extremely resistant isolates. Non-susceptibility to ceftazidime/avibactam and ceftolozane/tazobactam was largely due to the production of ESBL and VIM enzymes. Ceftazidime/avibactam and ceftolozane/tazobactam are possible options for some patients with MDR P. aeruginosa in Qatar.
      PubDate: Tue, 03 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz379
      Issue No: Vol. 74, No. 12 (2019)
       
  • In vitro activity of rezafungin against common and rare Candida species
           and Saccharomyces cerevisiae
    • Authors: Tóth Z; Forgács L, Locke J, et al.
      Pages: 3505 - 3510
      Abstract: AbstractBackgroundRezafungin is a novel echinocandin with excellent activity against common Candida species; however, limited data are available regarding rare Candida species.MethodsWe determined the in vitro susceptibility of 689 clinical isolates of 5 common and 19 rare Candida species, as well as Saccharomyces cerevisiae. The activity of rezafungin was compared with that of anidulafungin, caspofungin, micafungin, amphotericin B and fluconazole, using CLSI broth microdilution methodology (Fourth Edition: M27).ResultsRezafungin MIC90 values were 0.06 mg/L for Candida albicans (n=125), Candida tropicalis (n=51), Candida dubliniensis (n=22), Candida inconspicua (n=41), Candida sojae (n=10), Candida lipolytica (n=10) and Candida pulcherrima (n=10), 0.12 mg/L for Candida glabrata (n=81), Candida krusei (n=53), Candida kefyr (n=52) and Candida fabianii (n=15), 0.25 mg/L for Candida lusitaniae (n=46) and Candida auris (n=19), 0.5 mg/L for Candida metapsilosis (n=15) and S. cerevisiae (n=21), 1 mg/L for Candida orthopsilosis (n=15) and Candida guilliermondii (n=27) and 2 mg/L for Candida parapsilosis sensu stricto (n=59). Caspofungin MIC90 values were 0.25–2 mg/L for all species, while micafungin and anidulafungin MIC90 values were similar to those of rezafungin. Fluconazole resistance was found in C. albicans (5.6%) and C. glabrata (4.9%); rezafungin was effective against these isolates as well. Amphotericin B MIC values did not exceed 2 mg/L.ConclusionsRezafungin showed excellent in vitro activity against both WT and azole-resistant Candida species, as well as against S. cerevisiae. Rezafungin had similar activity to other echinocandins (excluding caspofungin) against common Candida species and, notably, against clinically relevant uncommon Candida species.
      PubDate: Fri, 20 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz390
      Issue No: Vol. 74, No. 12 (2019)
       
  • In vitro bactericidal activity of amoxicillin combined with different
           cephalosporins against endocarditis-associated Enterococcus faecalis
           clinical isolates
    • Authors: Peiffer-Smadja N; Guillotel E, Luque-Paz D, et al.
      Pages: 3511 - 3514
      Abstract: AbstractBackgroundThe combination of amoxicillin with cefazolin could be an interesting regimen for the empirical therapy of severe infective endocarditis, but its activity against enterococci is unknown.ObjectivesTo evaluate in vitro the bactericidal activity of the combination of amoxicillin with different cephalosporins including cefazolin.MethodsCombinations of amoxicillin (at MIC×¼) with cefazolin, cefotaxime, ceftriaxone, cefepime, ceftaroline or ceftobiprole (at the mean free plasma concentration) were studied using time–kill experiments for 10 endocarditis-associated Enterococcus faecalis strains and 2 reference strains.ResultsThe combinations amoxicillin/cefazolin, amoxicillin/cefotaxime, amoxicillin/ceftriaxone and amoxicillin/cefepime were synergistic at 12 and 24 h against 12/12 strains and amoxicillin/ceftobiprole and amoxicillin/ceftaroline against 10/12 strains. The combination amoxicillin/cefepime was bactericidal at 24 h against 9/12 strains, the combination amoxicillin/cefazolin against 8/12 strains, the combinations amoxicillin/ceftaroline, amoxicillin/cefotaxime and amoxicillin/ceftobiprole against 7/12 strains and the combination amoxicillin/ceftriaxone against 6/12 strains.ConclusionsThe combination amoxicillin/cefazolin is as synergistic and bactericidal in vitro as amoxicillin/cefotaxime or amoxicillin/ceftriaxone against E. faecalis.
      PubDate: Sun, 08 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz388
      Issue No: Vol. 74, No. 12 (2019)
       
  • In vitro synergy of β-lactam combinations against KPC-producing
           Klebsiella pneumoniae strains
    • Authors: Lawandi A; Leite G, Cheng M, et al.
      Pages: 3515 - 3520
      Abstract: AbstractBackgroundDouble carbapenem therapy has been promoted as an alternative treatment for infections due to carbapenemase-producing Enterobacteriaceae where carbapenemase inhibitors are unavailable or when other agents have demonstrated toxicity with equally limited evidence. The capacity of other β-lactams and β-lactamase inhibitors to provide synergistic activity with carbapenems is unclear.ObjectivesThis study sought to investigate the in vitro synergistic potential of other β-lactam/β-lactamase combinations with meropenem against KPC producers.MethodsTime–kill assays were performed on 24 unique strains of KPC-producing Klebsiella pneumoniae. Combinations evaluated included meropenem or imipenem with one of the following: ertapenem, piperacillin/tazobactam or ceftolozane/tazobactam. Concentrations used for each drug were those considered physiologically attainable in patients with a time above the concentration exceeding 40%–50% of the dose interval. Combinations were considered to be synergistic when they reduced bacterial cfu/mL by ≥2 log10 at 24 h as compared with the single most active agent.ResultsThe combination of piperacillin/tazobactam with meropenem was found to be synergistic against 70.8% of the isolates, followed by ertapenem with meropenem (58.3%) and ceftolozane/tazobactam with meropenem (41.7%). The piperacillin/tazobactam combination was found to be more bactericidal than the other combinations, with 58.3% of isolates demonstrating a ≥4 log10 cfu/mL reduction at 24 h, as compared with 37.5% for ertapenem and 20.8% for ceftolozane/tazobactam combinations.ConclusionsThe combination of piperacillin/tazobactam with meropenem may be a potential therapy against KPC-producing K. pneumoniae when other therapies are unavailable or prohibitively toxic.
      PubDate: Mon, 16 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz389
      Issue No: Vol. 74, No. 12 (2019)
       
  • In vitro antimicrobial combination testing of and evolution of resistance
           to the first-in-class spiropyrimidinetrione zoliflodacin combined with six
           therapeutically relevant antimicrobials for Neisseria gonorrhoeae
    • Authors: Foerster S; Drusano G, Golparian D, et al.
      Pages: 3521 - 3529
      Abstract: AbstractObjectivesResistance in Neisseria gonorrhoeae to all gonorrhoea therapeutic antimicrobials has emerged. Novel therapeutic antimicrobials are imperative and the first-in-class spiropyrimidinetrione zoliflodacin appears promising. Zoliflodacin could be introduced in dual antimicrobial therapies to prevent the emergence and/or spread of resistance. We investigated the in vitro activity of and selection of resistance to zoliflodacin alone and in combination with six gonorrhoea therapeutic antimicrobials against N. gonorrhoeae.MethodsThe international gonococcal reference strains WHO F (WT) and WHO O, WHO V and WHO X (strains with different AMR profiles) were examined. Zoliflodacin was evaluated alone or combined with ceftriaxone, cefixime, spectinomycin, gentamicin, tetracycline, cethromycin or sitafloxacin in chequerboard assays, time–kill curve analysis and selection-of-resistance studies.ResultsZoliflodacin alone or in combination with all six antimicrobials showed rapid growth inhibition against all examined strains. The time–kill curve analysis indicated that tetracycline or cethromycin combined with zoliflodacin can significantly decrease the zoliflodacin kill rate in vitro. The frequency of selected zoliflodacin-resistance mutations was low when evaluated as a single agent and further reduced for all antimicrobial combinations. All resistant mutants contained the GyrB mutations D429N, K450T or K450N, resulting in zoliflodacin MICs of 0.5–4 mg/L.ConclusionsZoliflodacin, alone or in combination with sexually transmitted infection therapeutic antimicrobials, rapidly kills gonococci with infrequent resistance emergence. Zoliflodacin remains promising for gonorrhoea oral monotherapy and as part of dual antimicrobial therapy with low resistance emergence potential. A Phase III trial evaluating efficacy and safety of zoliflodacin for uncomplicated gonorrhoea treatment is planned in 2019.
      PubDate: Thu, 05 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz376
      Issue No: Vol. 74, No. 12 (2019)
       
  • Can phenotypic data complement our understanding of antimycobacterial
           effects for drug combinations'
    • Authors: Kloprogge F; Hammond R, Copas A, et al.
      Pages: 3530 - 3536
      Abstract: AbstractObjectivesTo demonstrate how phenotypic cell viability data can provide insight into antimycobacterial effects for the isoniazid/rifampicin treatment backbone.MethodsData from a Mycobacterium komossense hollow-fibre infection model comprising a growth control group, rifampicin at three different exposures (Cmax = 0.14, 0.4 and 1.47 mg/L with t½ = 1.57 h and τ = 8 h) and rifampicin plus isoniazid (Cmax rifampicin = 0.4 mg/L and Cmax isoniazid = 1.2 mg/L with t½ = 1.57 h and τ = 8 h) were used for this investigation. A non-linear mixed-effects modelling approach was used to fit conventional cfu data, quantified using solid-agar plating. Phenotypic proportions of respiring (alive), respiring but with damaged cell membrane (injured) and ‘not respiring’ (dead) cells data were quantified using flow cytometry and Sytox Green™ (Sigma–Aldrich, UK) and resazurin sodium salt staining and fitted using a multinomial logistic regression model.ResultsIsoniazid/rifampicin combination therapy displayed a decreasing overall antimicrobial effect with time (θTime1/2 = 438 h) on cfu data, in contrast to rifampicin monotherapy where this trend was absent. In the presence of isoniazid a phenotype associated with cell injury was displayed, whereas with rifampicin monotherapy a pattern of phenotypic cell death was observed. Bacterial killing onset time on cfu data correlated negatively (θTime50 = 28.9 h, θLAGRIF50 = 0.132 mg/L) with rifampicin concentration up to 0.165 mg/L and this coincided with a positive relationship between rifampicin concentration and the probability of phenotypic cell death.ConclusionsCell viability data provide structured information on the pharmacodynamic interaction between isoniazid and rifampicin that complements the understanding of the antibacillary effects of this mycobacterial treatment backbone.
      PubDate: Sun, 25 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz369
      Issue No: Vol. 74, No. 12 (2019)
       
  • Effect of diabetes mellitus on TB drug concentrations in Tanzanian
           patients
    • Authors: Mtabho C; Semvua H, van den Boogaard J, et al.
      Pages: 3537 - 3545
      Abstract: AbstractBackgroundDiabetes mellitus (DM) is associated with poor TB treatment outcome. Previous studies examining the effect of DM on TB drug concentrations yielded conflicting results. No studies have been conducted to date in an African population.ObjectivesTo compare exposure to TB drugs in Tanzanian TB patients with and without DM.Patients and methodsA prospective pharmacokinetic study was performed among 20 diabetic and 20 non-diabetic Tanzanian TB patients during the intensive phase of TB treatment. Plasma pharmacokinetic parameters of isoniazid, rifampicin, pyrazinamide and ethambutol were compared using an independent-sample t-test on log-transformed data. Multiple linear regression analysis was performed to assess the effects of DM, gender, age, weight, HIV status and acetylator status on exposure to TB drugs.ResultsA trend was shown for 25% lower total exposure (AUC0–24) to rifampicin among diabetics versus non-diabetics (29.9 versus 39.9 mg·h/L, P=0.052). The AUC0–24 and peak concentration (Cmax) of isoniazid were also lower in diabetic TB patients (5.4 versus 10.6 mg·h/L, P=0.015 and 1.6 versus 2.8 mg/L, P=0.013). Pyrazinamide AUC0–24 and Cmax values were non-significantly lower among diabetics (P=0.08 and 0.09). In multivariate analyses, DM remained an independent predictor of exposure to isoniazid and rifampicin, next to acetylator status for isoniazid.ConclusionsThere is a need for individualized dosing of isoniazid and rifampicin based on plasma concentration measurements (therapeutic drug monitoring) and for clinical trials on higher doses of these TB drugs in patients with TB and DM.
      PubDate: Fri, 06 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz368
      Issue No: Vol. 74, No. 12 (2019)
       
  • Is the subcutaneous route an alternative for administering ertapenem to
           older patients' PHACINERTA study
    • Authors: Roubaud Baudron C; Legeron R, Ollivier J, et al.
      Pages: 3546 - 3554
      Abstract: AbstractBackgroundAntibiotic administration by subcutaneous (SC) injection is common practice in French geriatric wards as an alternative to the intravenous (IV) route, but few pharmacokinetic/pharmacodynamic data are available. Ertapenem is useful for the treatment of infections with ESBL-producing enterobacteria.ObjectivesTo report and compare ertapenem pharmacokinetic data between IV and SC routes in older persons.MethodsPatients >65 years of age receiving ertapenem (1 g once daily) for at least 48 h (IV or SC, steady-state) were prospectively enrolled. Total ertapenem concentrations [residual (C0), IV peak (C0.5) and SC peak (C2.5)] were determined by UV HPLC. Individual-predicted AUC0–24 values were calculated and population pharmacokinetic analyses were performed. Using the final model, a Monte Carlo simulation involving 10 000 patients evaluated the influence of SC or IV administration on the PTA. Tolerance to ertapenem and recovery were also monitored. ClinicalTrials.gov identifier: NCT02505386.ResultsTen (mean ± SD age=87±7 years) and 16 (age=88±5 years) patients were included in the IV and SC groups, respectively. The mean C0 and C2.5 values were not significantly different between the IV and SC groups (C0=12±5.9 versus 12±7.4 mg/L, P=0.97; C2.5=97±42 versus 67±41 mg/L, P=0.99). The mean C0.5 was higher in the IV group compared with the SC group (C0.5=184±90 versus 51±66 mg/L, P=0.001). The mean individual AUCs (1126.92±334.99 mg·h/L for IV versus 1005.3±266.0 mg·h/L for SC, P=0.38) and PTAs were not significantly different between groups. No severe antibiotic-related adverse effects were noted.ConclusionsSC administration of ertapenem is an alternative to IV administration in older patients.
      PubDate: Tue, 17 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz385
      Issue No: Vol. 74, No. 12 (2019)
       
  • Switching to bictegravir/emtricitabine/tenofovir alafenamide maintained
           HIV-1 RNA suppression in participants with archived antiretroviral
           resistance including M184V/I
    • Authors: Andreatta K; Willkom M, Martin R, et al.
      Pages: 3555 - 3564
      Abstract: AbstractObjectivesStudies 1878 and 1844 demonstrated non-inferior efficacy of switching suppressed HIV-1-infected adults to bictegravir/emtricitabine/tenofovir alafenamide (BIC/FTC/TAF) versus continuing boosted PI-based triple regimens or dolutegravir/abacavir/lamivudine (DTG/ABC/3TC). Here, detailed analyses of pre-existing resistance in the two BIC/FTC/TAF switch studies and efficacy at week 48 are described.MethodsPre-existing resistance was assessed from historical genotypes (documented resistance to study drugs was excluded) and by retrospective baseline proviral archive DNA genotyping from whole blood. Outcomes were based on HIV-1 RNA at week 48 with missing values imputed using the last on-treatment observation carried forward method.ResultsCumulative pre-existing resistance data from historical and proviral genotypes were obtained for 95% (543/570) of participants who switched to BIC/FTC/TAF. Altogether, 40% (217/543) had one or more pre-existing primary resistance substitutions in protease, reverse transcriptase and/or integrase. Pre-switch NRTI resistance was detected in 16% (89/543) of BIC/FTC/TAF-treated participants, with M184V or M184I detected by proviral genotyping in 10% (54/543). At week 48, 98% (561/570) of all BIC/FTC/TAF-treated participants versus 98% (213/217) with pre-existing resistance and 96% (52/54) with archived M184V/I had HIV-1 RNA <50 copies/mL. No BIC/FTC/TAF-treated participants developed treatment-emergent resistance to study drugs.ConclusionsPre-existing resistance substitutions, notably M184V/I, were unexpectedly common among suppressed participants who switched to BIC/FTC/TAF. High rates of virological suppression were maintained in the overall study population and in those with pre-existing resistance, including M184V/I, for up to 48 weeks of BIC/FTC/TAF treatment with no resistance development. These results indicate that BIC/FTC/TAF is an effective treatment option for suppressed patients, including those with evidence of archived NRTI resistance.
      PubDate: Tue, 20 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz347
      Issue No: Vol. 74, No. 12 (2019)
       
  • An unexpectedly high occurrence of aciclovir-induced neuropsychiatric
           symptoms in patients treated for herpesvirus CNS infection: a prospective
           observational study
    • Authors: Lindström J; Helldén A, Lycke J, et al.
      Pages: 3565 - 3572
      Abstract: AbstractBackgroundAciclovir is effective in herpesvirus infections of the CNS. Aciclovir-induced neuropsychiatric symptoms (AINS) have been reported and are associated with high CSF concentrations of aciclovir metabolite 9-carboxymethoxymethylguanine (CMMG). Risk factors except for renal failure have not been explored, and disruption of the blood–brain barrier (BBB) in acute CNS infection may be of interest.ObjectivesTo investigate the impact of risk factors on aciclovir and CMMG concentrations, and to relate the results to AINS.MethodsWe investigated 21 consecutively included, consenting patients treated with aciclovir or valaciclovir for herpesvirus CNS infection. Regression models were constructed to study the impact of risk factors including BBB disruption, as measured with CSF:serum albumin ratio, on CSF aciclovir and CMMG concentrations. Medical records were assessed retrospectively to identify patients with AINS.ResultsIncreased CSF:serum albumin ratio, as well as decreased renal function and high aciclovir doses, was associated with increased aciclovir and CMMG concentrations in the CSF. We identified five patients with new neuropsychiatric symptoms; four of those were considered to have AINS and had increased CSF CMMG concentrations. Only one patient without suspicion of AINS had an increased CSF CMMG concentration.ConclusionsIn patients with herpesvirus CNS infections, BBB disruption is associated with increasing aciclovir and CMMG CSF concentrations. We also found an unexpectedly high number of patients with AINS. Evaluation of CSF:serum albumin ratios, renal function and CSF concentrations of aciclovir and CMMG may all contribute to the optimization of aciclovir dosing and avoidance of AINS.
      PubDate: Sun, 25 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz357
      Issue No: Vol. 74, No. 12 (2019)
       
  • Plasma exposures following posaconazole delayed-release tablets in
           immunocompromised children and adolescents
    • Authors: Tragiannidis A; Herbrüggen H, Ahlmann M, et al.
      Pages: 3573 - 3578
      Abstract: AbstractBackgroundPosaconazole is a recommended option for antifungal prophylaxis in paediatric patients >12 years of age. However, little is known about plasma exposures and safety following administration of the delayed-release tablets (DRTs) in children and adolescents.MethodsIn a retrospective observational study, we analysed steady-state trough concentrations of posaconazole in all paediatric patients who had received the DRT formulation between May 2015 and December 2018 for antifungal prophylaxis. Dosing was guided by a published population pharmacokinetic model with weight-based dosing. Drug concentrations in plasma were measured by a validated tandem MS method. Liver function and drug discontinuations due to adverse effects were also assessed.ResultsA total of 34 patients (21 male, 13 female; median age 12 years, range 5–17 years; median body weight 43.5 kg, range 16–84 kg) undergoing treatment for haemato-oncological disorders (n=23) or immunosuppression for polyarthritis (n=1) or post-allogeneic HSCT (n=11) received posaconazole DRTs for a median of 70 days (range 9–391 days). The median first steady-state trough plasma concentration following model-derived dosing was 1607 ng/mL (range 501–8485 ng/mL) with trough concentrations being above the dosing target of ≥700 ng/mL in 32/34 patients (94%). Considering all (first and subsequent) trough concentrations, target attainment was 90% (63/70 samples). Posaconazole was well tolerated without adverse event-related discontinuations or breakthrough infections.ConclusionsAdministration of posaconazole DRTs to paediatric patients guided by a population pharmacokinetic-derived dosing algorithm resulted in predictable and potentially effective exposures and was well tolerated over prolonged time periods.
      PubDate: Tue, 27 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz359
      Issue No: Vol. 74, No. 12 (2019)
       
  • Short-course antibiotic treatment of bone and joint infections in
           children: a retrospective study at Montpellier University Hospital from
           2009 to 2013
    • Authors: Filleron A; Laurens M, Marin G, et al.
      Pages: 3579 - 3587
      Abstract: AbstractBackgroundAcute haematogenous bone and joint infections (AHBJI) represent a diagnostic and therapeutic emergency in children, with significant potential sequelae in the case of delayed treatment. Although historically the recommendations for treatment have been based on surgery and prolonged antibiotic therapy, recent studies have demonstrated that short-course antibiotic therapy is also effective.ObjectivesWe evaluated a short-term antibiotic protocol for both osteomyelitis and septic arthritis in a 6 year retrospective study at the University Hospital of Montpellier.MethodsThis protocol was based on an initial intravenous treatment with a re-evaluation after 48 h and an early switch to oral therapy in the case of a favourable clinical course for a minimum total duration of 15 days. Antibiotics were selected based on local microbiological epidemiology and systematically adapted to bacteriological results.ResultsOne hundred and seventy-six cases of AHBJI were included, comprising 56 patients with osteomyelitis, 95 with septic arthritis and 25 who had both of these. The aetiological agent was identified in 42% of the cases, with the main pathogens being Staphylococcus aureus (39%) and Kingella kingae (27%). The mean intravenous treatment duration was 4 days, while the total treatment duration was 15 days. There were no treatment failures, mild sequelae occurred in 1% of the cases and the secondary surgical revision rate was 7%.ConclusionsThe results of this study are comparable to those reported for evaluations of prolonged antibiotic therapy protocols, thus indicating that a common short-term antimicrobial therapy for the management of both osteomyelitis and septic arthritis (minimum of 15 days) is a viable option for treating AHBJI in children. Further prospective studies to confirm these findings are hence warranted.
      PubDate: Tue, 03 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz358
      Issue No: Vol. 74, No. 12 (2019)
       
  • Proactive therapeutic drug monitoring (TDM) may be helpful in managing
           long-term treatment with linezolid safely: findings from a monocentric,
           prospective, open-label, interventional study
    • Authors: Cojutti P; Merelli M, Bassetti M, et al.
      Pages: 3588 - 3595
      Abstract: AbstractBackgroundThrombocytopenia may be a dose-dependent adverse effect of linezolid therapy.ObjectivesTo assess whether proactive therapeutic drug monitoring (TDM) could be helpful in preventing and/or in recovering from the occurrence of linezolid-induced thrombocytopenia during long-term treatment.MethodsThis was a monocentric, prospective, open-label, interventional study conducted between June 2015 and December 2017 among adult patients receiving >10 days of linezolid therapy and undergoing proactive TDM (desired trough level 2–8 mg/L) and platelet count assessment at day 3–5 and then once weekly up to the end of treatment.ResultsSixty-one patients were included. Twenty-eight (45.9%) always had desired trough level (group A) and 33 (54.1%) experienced linezolid overexposure (group B) [29/33 transiently (subgroup B1) and 4/33 persistently (subgroup B2)]. No patient experienced linezolid underexposure. Median duration of treatment for the different groups ranged between 19 and 54 days. Thrombocytopenia occurred overall in 14.8% of cases (9/61). The incidence rate of thrombocytopenia was significantly lower (P=0.012) in both group A (10.7%; 3/28) and subgroup B1 (10.3%; 3/29) than in subgroup B2 (75.0%; 3/4). Thrombocytopenic patients belonging to both group A and group B1 recovered from thrombocytopenia without the need for discontinuing therapy. Multivariate linear regression analysis revealed that thrombocytopenia was independently associated with baseline platelet count and with median linezolid trough concentrations.ConclusionsProactive TDM of linezolid may be beneficial either in preventing or in recovering from dose-dependent thrombocytopenia, even when treatment lasts for more than 28 days. Larger prospective studies are warranted to confirm our findings.
      PubDate: Sat, 31 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz374
      Issue No: Vol. 74, No. 12 (2019)
       
  • Clinimetric properties and suitability of selected quality indicators for
           assessing antibiotic use in hospitalized adults: a multicentre point
           prevalence study in 24 hospitals in Germany
    • Authors: Först G; Kern W, Weber N, et al.
      Pages: 3596 - 3602
      Abstract: AbstractObjectivesThe capability to measure and monitor the quality of antibiotic prescribing is an important component of antibiotic stewardship (ABS) programmes. Several catalogues of consensus-based structure and process-of-care quality indicators (QIs) have been proposed, but only a few studies have tested and validated ABS QIs in practice tests. This multicentre study determined the clinimetric properties and suitability of a set of 33 process QIs for ABS that had earlier been developed and in part recommended in a German–Austrian hospital ABS practice guideline.MethodsTwo point prevalence surveys were conducted in a convenience sample of 24 acute care hospitals throughout Germany, and data of all screened adult inpatients with prescription of a systemic antibiotic at a given day (n=4310) were included in the study. For each QI, the following clinimetric properties were assessed: applicability, feasibility, performance, case mix stability and interobserver reliability.ResultsEighteen QIs were considered sufficiently feasible, applicable and reliable, and had adequate room for improvement. The finally selected QIs primarily cover antibiotic therapy of common infections (bloodstream infection, pneumonia and urinary tract infection), while two of the QIs each address surgical prophylaxis and general aspects of antibiotic administration.ConclusionsPractice tests may be important to test the suitability of consensus process-of-care QIs in the field of hospital ABS. The 18 selected QIs considered suitable enough for hospital ABS in this study should be regarded as priority QIs useful for internal quality control and assurance. More research and additional practice tests may be needed to confirm their suitability for external quality assessment schemes.
      PubDate: Fri, 23 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz364
      Issue No: Vol. 74, No. 12 (2019)
       
  • The effectiveness of repeating a social norm feedback intervention to high
           prescribers of antibiotics in general practice: a national regression
           discontinuity design
    • Authors: Ratajczak M; Gold N, Hailstone S, et al.
      Pages: 3603 - 3610
      Abstract: AbstractObjectivesUnnecessary antibiotic prescribing contributes to antimicrobial resistance. A randomized controlled trial in 2014–15 showed that a letter from England’s Chief Medical Officer (CMO) to high-prescribing GPs, giving feedback about their prescribing relative to the norm, decreased antibiotic prescribing. The CMO sent further feedback letters in succeeding years. We evaluated the effectiveness of the repeated feedback intervention.MethodsPublicly available databases were used to identify GP practices whose antibiotic prescribing was in the top 20% nationally (the intervention group). In April 2017, GPs in every practice in the intervention group (n=1439) were sent a letter from the CMO. The letter stated that, ‘the great majority of practices in England prescribe fewer antibiotics per head than yours’. Practices in the control group received no communication (n=5986). We used a regression discontinuity design to evaluate the intervention because assignment to the intervention condition was exogenous, depending on a ‘rating variable’. The outcome measure was the average rate of antibiotic items dispensed from April 2017 to September 2017.ResultsThe GP practices who received the letter changed their prescribing rates by −3.69% (95% CI=−2.29 to −5.10; P<0.001), representing an estimated 124 952 fewer antibiotic items dispensed. The effect is robust to different specifications of the model.ConclusionsSocial norm feedback from a high-profile messenger continues to be effective when repeated. It can substantially reduce antibiotic prescribing at low cost and on a national scale. Therefore, it is a worthwhile addition to antimicrobial stewardship programmes.
      PubDate: Fri, 20 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz392
      Issue No: Vol. 74, No. 12 (2019)
       
  • Young doctors’ perspectives on antibiotic use and resistance: a
           multinational and inter-specialty cross-sectional European Society of
           Clinical Microbiology and Infectious Diseases (ESCMID) survey
    • Authors: Beović B; , Doušak M, et al.
      Pages: 3611 - 3618
      Abstract: AbstractBackgroundPostgraduate training has the potential to shape the prescribing practices of young doctors.ObjectivesTo investigate the practices, attitudes and beliefs on antibiotic use and resistance in young doctors of different specialties.MethodsWe performed an international web-based exploratory survey. Principal component analysis (PCA) and bivariate and multivariate [analysis of variance (ANOVA)] analyses were used to investigate differences between young doctors according to their country of specialization, specialty, year of training and gender.ResultsOf the 2366 participants from France, Greece, Italy, Portugal, Slovenia and Spain, 54.2% of young doctors prescribed antibiotics predominantly as instructed by a mentor. Associations between the variability of answers and the country of training were observed across most questions, followed by variability according to the specialty. Very few differences were associated with the year of training and gender. PCA revealed five dimensions of antibiotic prescribing culture: self-assessment of knowledge, consideration of side effects, perception of prescription patterns, consideration of patient sickness and perception of antibiotic resistance. Only the country of specialization (partial η2 0.010–0.111) and the type of specialization (0.013–0.032) had a significant effect on all five identified dimensions (P < 0.01). The strongest effects were observed on self-assessed knowledge and in the perception of antibiotic resistance.ConclusionsThe country of specialization followed by the type of specialization are the most important determinants of young doctors’ perspectives on antibiotic use and resistance. The inclusion of competencies in antibiotic use in all specialty curricula and international harmonization of training should be considered.
      PubDate: Tue, 03 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz375
      Issue No: Vol. 74, No. 12 (2019)
       
  • Gross national income and antibiotic resistance in invasive isolates:
           analysis of the top-ranked antibiotic-resistant bacteria on the 2017 WHO
           priority list
    • Authors: Savoldi A; Carrara E, Gladstone B, et al.
      Pages: 3619 - 3625
      Abstract: AbstractObjectivesTo assess the association between country income status and national prevalence of invasive infections caused by the top-ranked bacteria on the WHO priority list: carbapenem-resistant (CR) Acinetobacter spp., Klebsiella spp. and Pseudomonas aeruginosa; third-generation cephalosporin-resistant (3GCR) Escherichia coli and Klebsiella spp.; and MRSA and vancomycin-resistant Enterococcus faecium (VR E. faecium).MethodsActive surveillance systems providing yearly prevalence data from 2012 onwards for the selected bacteria were included. The gross national income (GNI) per capita was used as the indicator for income status of each country and was log transformed to account for non-linearity. The association between antibiotic prevalence data and GNI per capita was investigated individually for each bacterium through linear regression.ResultsSurveillance data were available from 67 countries: 38 (57%) were high income, 16 (24%) upper-middle income, 11 (16%) lower-middle income and two (3%) low income countries. The regression showed significant inverse association (P<0.0001) between resistance prevalence of invasive infections and GNI per capita. The highest rate of increase per unit decrease in log GNI per capita was observed in 3GCR Klebsiella spp. (22.5%, 95% CI 18.2%–26.7%), CR Acinetobacter spp. (19.2% 95% CI 11.3%–27.1%) and 3GCR E. coli (15.3%, 95% CI 11.6%–19.1%). The rate of increase per unit decrease in log GNI per capita was lower in MRSA (9.5%, 95% CI 5.2%–13.7%).ConclusionsThe prevalence of invasive infections caused by the WHO top-ranked antibiotic-resistant bacteria is inversely associated with GNI per capita at the global level. Public health interventions designed to limit the burden of antimicrobial resistance should also consider determinants of poverty and inequality, especially in lower-middle income and low income countries.
      PubDate: Fri, 06 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz381
      Issue No: Vol. 74, No. 12 (2019)
       
  • Detection of a novel mcr-5.4 gene variant in hospital tap water by shotgun
           metagenomic sequencing
    • Authors: Fleres G; Couto N, Schuele L, et al.
      Pages: 3626 - 3628
      PubDate: Fri, 23 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz363
      Issue No: Vol. 74, No. 12 (2019)
       
  • Detection of chromosome-mediated tet(X4)-carrying Aeromonas caviae in a
           sewage sample from a chicken farm
    • Authors: Chen C; Chen L, Zhang Y, et al.
      Pages: 3628 - 3630
      Abstract: Sir,
      PubDate: Wed, 11 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz387
      Issue No: Vol. 74, No. 12 (2019)
       
  • In vivo acquisition of fosfomycin resistance in Escherichia coli by fosA
           transmission from commensal flora
    • Authors: ten Doesschate T; Abbott I, Willems R, et al.
      Pages: 3630 - 3632
      Abstract: Sir,
      PubDate: Wed, 11 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz380
      Issue No: Vol. 74, No. 12 (2019)
       
  • Emergence of Klebsiella pneumoniae and Enterobacter cloacae producing
           OXA-48 carbapenemases from retail meats in China, 2018
    • Authors: Zhuang Z; Lv L, Lu J, et al.
      Pages: 3632 - 3634
      Abstract: Sir,
      PubDate: Tue, 17 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz394
      Issue No: Vol. 74, No. 12 (2019)
       
  • Detection and analysis of two cases of the internationally spreading
           ceftriaxone-resistant Neisseria gonorrhoeae FC428 clone in China
    • Authors: Yang F; Zhang H, Chen Y, et al.
      Pages: 3635 - 3636
      PubDate: Thu, 29 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz384
      Issue No: Vol. 74, No. 12 (2019)
       
  • Occurrence of CTX-M-123-producing Salmonella Indiana in chicken carcasses:
           a new challenge for the poultry industry and food safety
    • Authors: Wang W; Xu J, Fanning S, et al.
      Pages: 3637 - 3639
      PubDate: Sat, 31 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz386
      Issue No: Vol. 74, No. 12 (2019)
       
  • Sulfamethoxazole/trimethoprim resistance overcall by VITEK® 2 and BD
           Phoenix™ in community-associated MRSA and MSSA
    • Authors: Coombs G; Mowlaboccus S, Daley D, et al.
      Pages: 3639 - 3641
      PubDate: Tue, 20 Aug 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz361
      Issue No: Vol. 74, No. 12 (2019)
       
  • Evaluation of temocillin and meropenem MICs as diagnostic markers for
           OXA-48-like carbapenemases
    • Authors: Hopkins K; Meunier D, Mustafa N, et al.
      Pages: 3641 - 3643
      Abstract: Sir,
      PubDate: Tue, 17 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz383
      Issue No: Vol. 74, No. 12 (2019)
       
  • Choosing the right anticoagulant: a critical choice when assessing
           pharmacokinetic parameters for tetracyclines obtained from human blood
           samples
    • Authors: Bayliss M; Kyriakides M, Rigdova K, et al.
      Pages: 3643 - 3645
      Abstract: Sir,
      PubDate: Mon, 16 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz382
      Issue No: Vol. 74, No. 12 (2019)
       
  • Erratum to: Switching to bictegravir/emtricitabine/tenofovir alafenamide
           maintained HIV-1 RNA suppression in participants with archived
           antiretroviral resistance including M184V/I
    • Authors: Andreatta K; Willkom M, Martin R, et al.
      Pages: 3646 - 3647
      Abstract: J Antimicrob Chemother 2019; 74: 3555–64
      PubDate: Sat, 28 Sep 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz412
      Issue No: Vol. 74, No. 12 (2019)
       
  • Acknowledgement of Referees
    • Pages: 3648 - 3657
      Abstract: The Editors of the Journal of Antimicrobial Chemotherapy are most grateful to the following for their assistance with the assessment of manuscripts over the last year.
      PubDate: Fri, 15 Nov 2019 00:00:00 GMT
      DOI: 10.1093/jac/dkz475
      Issue No: Vol. 74, No. 12 (2019)
       
 
 
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