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GERONTOLOGY AND GERIATRICS (125 journals)                     

Showing 1 - 122 of 122 Journals sorted alphabetically
Activities, Adaptation & Aging     Hybrid Journal   (Followers: 6)
Advances in Alzheimer's Disease     Open Access   (Followers: 8)
Advances in Geriatrics     Open Access   (Followers: 4)
Advances in Gerontology     Partially Free   (Followers: 9)
Advances in Parkinson's Disease     Open Access   (Followers: 2)
Age and Ageing     Hybrid Journal   (Followers: 105)
Aging & Mental Health     Hybrid Journal   (Followers: 42)
Aging and Cancer     Open Access   (Followers: 2)
Aging and Health Research     Open Access   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3)
Aging Medicine     Open Access   (Followers: 1)
Aging, Neuropsychology, and Cognition     Hybrid Journal   (Followers: 42)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 54)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 6)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 6)
American Journal of Alzheimer's Disease and Other Dementias     Hybrid Journal   (Followers: 22)
American Journal of Geriatric Psychiatry     Hybrid Journal   (Followers: 19)
Anales en Gerontología     Open Access  
Angewandte GERONTOLOGIE Appliquée     Full-text available via subscription  
Annual Review of Gerontology and Geriatrics     Hybrid Journal   (Followers: 14)
Arthritis und Rheuma     Hybrid Journal  
Australasian Journal On Ageing     Hybrid Journal   (Followers: 12)
Australian Ageing Agenda     Full-text available via subscription   (Followers: 5)
B&G Bewegungstherapie und Gesundheitssport     Hybrid Journal   (Followers: 2)
Biogerontology     Hybrid Journal   (Followers: 1)
BMC Geriatrics     Open Access   (Followers: 17)
Canadian Geriatrics Journal     Open Access   (Followers: 6)
Canadian Journal on Aging     Hybrid Journal   (Followers: 17)
Clinical Gerontologist     Hybrid Journal   (Followers: 3)
Clinics in Geriatric Medicine     Full-text available via subscription   (Followers: 6)
Current Geriatrics Reports     Hybrid Journal   (Followers: 1)
Current Gerontology and Geriatrics Research     Open Access   (Followers: 11)
Dementia and Geriatric Cognitive Disorders     Full-text available via subscription   (Followers: 37)
Dementia and Geriatric Cognitive Disorders Extra     Open Access   (Followers: 20)
Drugs & Aging     Full-text available via subscription   (Followers: 10)
European Geriatric Medicine     Full-text available via subscription   (Followers: 3)
European Journal of Ageing     Hybrid Journal   (Followers: 16)
European Review of Aging and Physical Activity     Open Access   (Followers: 11)
Experimental Aging Research: An International Journal Devoted to the Scientific Study of the Aging Process     Hybrid Journal   (Followers: 2)
Experimental Gerontology     Hybrid Journal   (Followers: 5)
Frontiers in Aging Neuroscience     Open Access   (Followers: 22)
Gait & Posture     Hybrid Journal   (Followers: 17)
Generations     Full-text available via subscription   (Followers: 3)
Geriatric Care     Open Access   (Followers: 4)
Geriatric Medicine in General Practice     Full-text available via subscription   (Followers: 8)
Geriatric Orthopaedic Surgery Rehabilitation     Open Access   (Followers: 5)
Geriatrics     Open Access   (Followers: 3)
Geriatrics & Gerontology International     Hybrid Journal   (Followers: 12)
Geriatrie up2date     Hybrid Journal  
Geriatrie-Report : Forschung und Praxis in der Altersmedizin     Full-text available via subscription  
Gerodontology     Hybrid Journal   (Followers: 2)
Gerokomos     Open Access   (Followers: 1)
Geron     Full-text available via subscription  
Gerontologia     Open Access  
Gerontology     Full-text available via subscription   (Followers: 22)
Gerontology & Geriatrics Education     Hybrid Journal   (Followers: 8)
Gerontology and Geriatric Medicine     Open Access   (Followers: 5)
GeroPsych: The Journal of Gerontopsychology and Geriatric Psychiatry     Hybrid Journal   (Followers: 5)
GeroScience : Official Journal of the American Aging Association (AGE)     Hybrid Journal   (Followers: 8)
Global Journal of Geriatrics Nursing     Open Access   (Followers: 4)
Hip International     Hybrid Journal  
I Advance Senior Care     Full-text available via subscription  
Immunity & Ageing     Open Access   (Followers: 9)
Innovation in Aging     Open Access   (Followers: 1)
International Journal of Ageing and Later Life     Open Access   (Followers: 1)
International Journal of Aging and Human Development     Full-text available via subscription   (Followers: 11)
International Journal of Alzheimer's Disease     Open Access   (Followers: 8)
JMIR Aging     Open Access  
Journal for Healthcare Quality     Hybrid Journal   (Followers: 28)
Journal of Adult Protection, The     Hybrid Journal   (Followers: 15)
Journal of Aging and Environment     Hybrid Journal   (Followers: 4)
Journal of Aging and Health     Hybrid Journal   (Followers: 28)
Journal of Angiogenesis Research     Open Access   (Followers: 2)
Journal of Applied Gerontology     Hybrid Journal   (Followers: 18)
Journal of Elder Abuse & Neglect     Hybrid Journal   (Followers: 6)
Journal of Frailty & Aging     Hybrid Journal  
Journal of Geriatric Cardiology     Open Access   (Followers: 3)
Journal of Geriatric Mental Health     Open Access   (Followers: 6)
Journal of Geriatric Oncology     Hybrid Journal   (Followers: 2)
Journal of Geriatric Physical Therapy     Hybrid Journal   (Followers: 15)
Journal of Geriatrics     Open Access   (Followers: 1)
Journal of Geriatrics and Palliative Care     Open Access   (Followers: 5)
Journal of Gerontological Social Work     Hybrid Journal   (Followers: 14)
Journal of Mid-life Health     Open Access  
Journal of Military and Veterans Health     Full-text available via subscription   (Followers: 7)
Journal of Parkinsonism and Restless Legs Syndrome     Open Access   (Followers: 2)
Journal of Parkinson’s Disease and Alzheimer’s Disease     Open Access   (Followers: 1)
Journal of Prevention of Alzheimer's Disease     Hybrid Journal   (Followers: 1)
Journal of Religion Spirituality & Aging     Hybrid Journal   (Followers: 7)
Journal of Social Work in End-of-Life & Palliative Care     Hybrid Journal   (Followers: 24)
Journal of the American Geriatrics Society     Hybrid Journal   (Followers: 69)
Journal of the Indian Academy of Geriatrics     Open Access   (Followers: 4)
Maturitas     Hybrid Journal   (Followers: 10)
Medycyna Wieku Podeszłego (Geriatric Medicine)     Open Access  
Mortality: Promoting the interdisciplinary study of death and dying     Hybrid Journal   (Followers: 9)
Neurodegenerative Diseases     Full-text available via subscription   (Followers: 1)
Neuroembryology and Aging     Full-text available via subscription   (Followers: 1)
NOVAcura     Hybrid Journal  
npj Aging and Mechanisms of Disease     Open Access   (Followers: 1)
npj Parkinson's Disease     Open Access   (Followers: 5)
Nursing Older People     Full-text available via subscription   (Followers: 9)
OA Elderly Medicine     Open Access  
Paediatrics & Child Health in General Practice     Full-text available via subscription   (Followers: 5)
Palliative Care & Social Practice     Open Access   (Followers: 3)
Parkinson's Disease     Open Access   (Followers: 12)
Pathobiology of Aging & Age-related Diseases     Open Access  
Physical & Occupational Therapy in Geriatrics     Hybrid Journal   (Followers: 57)
Quality in Ageing and Older Adults     Hybrid Journal   (Followers: 44)
Quality of Life Research     Hybrid Journal   (Followers: 20)
RASP - Research on Ageing and Social Policy     Open Access   (Followers: 4)
Revista Española de Geriatría y Gerontología     Full-text available via subscription  
Senex: Yaşlılık Çalışmaları Dergisi / Senex: Journal of Aging Studies     Open Access  
The Aging Male     Hybrid Journal   (Followers: 2)
The Gerontologist     Hybrid Journal   (Followers: 23)
The Journals of Gerontology : Series A     Hybrid Journal   (Followers: 22)
Topics in Geriatric Rehabilitation     Hybrid Journal   (Followers: 15)
Translational Medicine of Aging     Open Access  
Work, Aging and Retirement     Open Access   (Followers: 4)
Working with Older People     Hybrid Journal   (Followers: 40)
Zeitschrift fur Gerontologie und Geriatrie     Hybrid Journal   (Followers: 1)
Zeitschrift für Gerontopsychologie und -psychiatrie     Full-text available via subscription   (Followers: 1)
Zeitschrift für Palliativmedizin     Hybrid Journal  

           

Similar Journals
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Frontiers in Aging Neuroscience
Journal Prestige (SJR): 1.638
Citation Impact (citeScore): 4
Number of Followers: 22  

  This is an Open Access Journal Open Access journal
ISSN (Online) 1663-4365
Published by Frontiers Media Homepage  [96 journals]
  • The relationship between mild cognitive impairment and postoperative
           delirium undergoing total knee arthroplasty: The PNDABLE
           study|Background|Methods|Results|Conclusion|Clinical trial registration

    • Authors: Bin Wang, Chuanlin Mu, Xinhui Tang, Fei Wang, Gaofeng Zhang, Jiahan Wang, Rui Dong, Xu Lin, Yanlin Bi
      Abstract: BackgroundPatients undergoing surgery are at a higher risk of developing postoperative delirium (POD) as a result of anesthesia and surgical procedures. This study examined the association between POD and mild cognitive impairment (MCI) and whether MCI influences POD through the core pathology of POD.MethodsWe enrolled Chinese Han patients undergoing unilateral total knee arthroplasty (aged 50–90, weighing 50–80 kg, and using ASAI-II), combined with epidural anesthesia between October 2020 and June 2021. All the participants were assessed using Winblad's criteria for diagnosing MCI on pre-operation and using the Confusion Assessment Method (CAM) and the Memorial Delirium Assessment Scale (MDAS) postoperative 1–7 days (or before discharge) for diagnosing POD by an anesthesiologist. Cerebrospinal fluid (CSF) biomarkers of POD were measured by enzyme-linked immunosorbent assay (ELISA). To examine the mechanism by which POD pathologies affect cognition, causal mediation analyses were performed.ResultsPOD incidence was 20.2%, including 32.5% in the MCI group and 12.4% in the non-mild cognitive impairment (NMCI) group. The MCI and CSF levels of T-tau and P-tau were risk factors, and the CSF levels of Aβ42, Aβ42/ T-tau, and Aβ42/ P-tau were protective factors in POD (p < 0.05). Part of the effects of MCI on cognition can be attributed to amyloid pathology and tau.ConclusionMCI may be a reasonably good prognostic factor in POD development. Overall, amyloid pathology and tau protein might partially mediate the influence of MCI on POD.Clinical trial registrationwww.clinicaltrials.gov, identifier: ChiCTR2000033439.
      PubDate: 2022-09-29T00:00:00Z
       
  • Astragaloside IV supplementation attenuates cognitive impairment by
           

    • Authors: Yaxuan Zhang, Yuan Yuan, Jiawei Zhang, Yao Zhao, Yueqi Zhang, Jianliang Fu
      Abstract: Although diabetic cognitive impairment is one of the most common complications of type 2 diabetes mellitus (T2DM), optimized therapeutic strategies are not available yet. Astragalosides IV (AS-IV) is a traditional Chinese medicine possessing diverse pharmacological properties including anti-inflammatory and antioxidant effects. However, the effects of AS-IV on diabetes-related cognitive impairment and its precise mechanisms remain largely unknown. T2DM mice, induced by a high-fat diet (HFD) and an intraperitoneal injection of low-dose streptozotocin (STZ) were administrated with AS-IV every other day for eight consecutive weeks. Learning and memory abilities were assessed subsequently using the Ymaze test and the anxious behavior was evaluated using an open field test. Then, the morphology and number of neurons and microglia were observed by HE staining or immunohistochemistry. Oxidative stress biomarkers and pro-inflammatory cytokines were determined using relevant kits. In addition, the expression levels of Nrf2, Keap1, HO-1, and NQO1 were determined by Western blot analyses. The results indicated that AS-IV administration significantly improved neuronal damage and cognitive deficit in T2DM mice. Meanwhile, oxidative stress and neuroinflammation were also ameliorated in T2DM mice, which might be attributed to the regulation of Nrf2/Keap1/HO-1/NQO1 pathway in T2DM mice. Taken together, these data suggested that AS-IV ameliorates cognitive impairment in T2DM mice by attenuating oxidative stress and neuroinflammation, possibly through modulating the Nrf2/Keap1/HO1/NQO1 pathway.
      PubDate: 2022-09-29T00:00:00Z
       
  • Non-invasive brain stimulation for osteoarthritis

    • Authors: Hui-Qi Zhu, Jing Luo, Xue-Qiang Wang, Xin-An Zhang
      Abstract: Osteoarthritis (OA) is a degenerative joint disease, the prevalence of OA is increasing, and the elderly are the most common in patients with OA. OA has a severe impact on the daily life of patients, this increases the demand for treatment of OA. In recent years, the application of non-invasive brain stimulation (NIBS) has attracted extensive attention. It has been confirmed that NIBS plays an important role in regulating cortical excitability and oscillatory rhythm in specific brain regions. In this review, we summarized the therapeutic effects and mechanisms of different NIBS techniques in OA, clarified the potential of NIBS as a treatment choice for OA, and provided prospects for further research in the future.
      PubDate: 2022-09-29T00:00:00Z
       
  • Gait decline while dual-tasking is an early sign of white matter
           deterioration in middle-aged and older adults

    • Authors: Haidar Alzaid, Thomas Ethofer, Bernd Kardatzki, Michael Erb, Klaus Scheffler, Daniela Berg, Walter Maetzler, Markus A. Hobert
      Abstract: Loss of white matter integrity (WMI) is associated with gait deficits in middle-aged and older adults. However, these deficits are often only apparent under cognitively demanding situations, such as walking and simultaneously performing a secondary cognitive task. Moreover, evidence suggests that declining executive functions (EF) are linked to gait decline, and their co-occurrence may point to a common underlying pathology, i.e., degeneration of shared brain regions. In this study, we applied diffusion tensor imaging (DTI) and a standardized gait assessment under single- and dual-tasking (DT) conditions (walking and subtracting) in 74 middle-aged and older adults without any significant gait or cognitive impairments to detect subtle WM alterations associated with gait decline under DT conditions. Additionally, the Trail Making Test (TMT) was used to assess EF, classify participants into three groups based on their performance, and examine a possible interaction between gait, EF, and WMI. Gait speed and subtracting speed while dual-tasking correlated significantly with the fractional anisotropy (FA) in the bilateral anterior corona radiata (highest r = 0.51/p < 0.0125 FWE-corrected). Dual-task costs (DTC) of gait speed correlated significantly with FA in widespread pathways, including the corpus callosum, bilateral anterior and superior corona radiata, as well as the left superior longitudinal fasciculus (highest r = −0.47/p < 0.0125 FWE-corrected). EF performance was associated with FA in the left anterior corona radiata (p < 0.05); however, EF did not significantly mediate the effects of WMI on DTC of gait speed. There were no significant correlations between TMT and DTC of gait and subtracting speed, respectively. Our findings indicate that gait decline under DT conditions is associated with widespread WM deterioration even in middle-aged and older adults without any significant gait or cognitive impairments. However, this relationship was not mediated by EF.
      PubDate: 2022-09-29T00:00:00Z
       
  • Mediating roles of leukoaraiosis and infarcts in the effects of unilateral
           carotid artery stenosis on cognition|Background and objectives|Materials
           and methods|Results|Conclusion

    • Authors: Kuo-Lun Huang, Ting-Yu Chang, Yi-Ming Wu, Yeu-Jhy Chang, Hsiu-Chuan Wu, Chi-Hung Liu, Tsong-Hai Lee, Meng-Yang Ho
      Abstract: Background and objectivesLeukoaraiosis and infarcts are common in patients with carotid artery stenosis (CAS), and CAS severity, leukoaraiosis and infarcts all have been implicated in cognitive impairments. CAS severity was not only hypothesized to directly impede specific cognitive domains, but also transmit its effects indirectly to cognitive function through ipsilateral infarcts as well as periventricular leukoaraiosis (PVL) and deep white matter leukoaraiosis (DWML). We aimed to delineate the contributions of leukoaraiosis, infarcts and CAS to different specific cognitive domains.Materials and methodsOne hundred and sixty one participants with unilateral CAS (>50%) on the left (n = 85) or right (n = 76) side and 65 volunteers without significant CAS (
      PubDate: 2022-09-29T00:00:00Z
       
  • The recognition of time-compressed speech as a function of age in
           listeners with cochlear implants or normal hearing

    • Authors: Anna R. Tinnemore, Lauren Montero, Sandra Gordon-Salant, Matthew J. Goupell
      Abstract: Speech recognition is diminished when a listener has an auditory temporal processing deficit. Such deficits occur in listeners over 65 years old with normal hearing (NH) and with age-related hearing loss, but their source is still unclear. These deficits may be especially apparent when speech occurs at a rapid rate and when a listener is mostly reliant on temporal information to recognize speech, such as when listening with a cochlear implant (CI) or to vocoded speech (a CI simulation). Assessment of the auditory temporal processing abilities of adults with CIs across a wide range of ages should better reveal central or cognitive sources of age-related deficits with rapid speech because CI stimulation bypasses much of the cochlear encoding that is affected by age-related peripheral hearing loss. This study used time-compressed speech at four different degrees of time compression (0, 20, 40, and 60%) to challenge the auditory temporal processing abilities of younger, middle-aged, and older listeners with CIs or with NH. Listeners with NH were presented vocoded speech at four degrees of spectral resolution (unprocessed, 16, 8, and 4 channels). Results showed an interaction between age and degree of time compression. The reduction in speech recognition associated with faster rates of speech was greater for older adults than younger adults. The performance of the middle-aged listeners was more similar to that of the older listeners than to that of the younger listeners, especially at higher degrees of time compression. A measure of cognitive processing speed did not predict the effects of time compression. These results suggest that central auditory changes related to the aging process are at least partially responsible for the auditory temporal processing deficits seen in older listeners, rather than solely peripheral age-related changes.
      PubDate: 2022-09-29T00:00:00Z
       
  • Effects and mechanisms of mindfulness training and physical exercise on
           cognition, emotional wellbeing, and brain outcomes in chronic stroke
           patients: Study protocol of the MindFit project randomized controlled
           trial|Background|Materials and methods|Results|Discussion|Clinical trial
           registration

    • Authors: Adrià Bermudo-Gallaguet, Mar Ariza, Rosalia Dacosta-Aguayo, Daniela Agudelo, Neus Camins-Vila, Maria Boldó, Òscar Carrera, Sandra Vidal, Blai Ferrer-Uris, Albert Busquets, Marc Via, Guillem Pera, Cynthia Cáceres, Meritxell Gomis, Alberto García-Molina, José María Tormos, Ana Arrabé, Gustavo Diez, Maria José Durà Mata, Pere Torán-Monserrat, Juan José Soriano-Raya, Sira Domènech, Alexandre Perera-Lluna, Kirk I. Erickson, Maria Mataró
      Abstract: BackgroundPost-stroke cognitive and emotional complications are frequent in the chronic stages of stroke and have important implications for the functionality and quality of life of those affected and their caregivers. Strategies such as mindfulness meditation, physical exercise (PE), or computerized cognitive training (CCT) may benefit stroke patients by impacting neuroplasticity and brain health.Materials and methodsOne hundred and forty-one chronic stroke patients are randomly allocated to receive mindfulness-based stress reduction + CCT (n = 47), multicomponent PE program + CCT (n = 47), or CCT alone (n = 47). Interventions consist of 12-week home-based programs five days per week. Before and after the interventions, we collect data from cognitive, psychological, and physical tests, blood and stool samples, and structural and functional brain scans.ResultsThe effects of the interventions on cognitive and emotional outcomes will be described in intention-to-treat and per-protocol analyses. We will also explore potential mediators and moderators, such as genetic, molecular, brain, demographic, and clinical factors in our per-protocol sample.DiscussionThe MindFit Project is a randomized clinical trial that aims to assess the impact of mindfulness and PE combined with CCT on chronic stroke patients’ cognitive and emotional wellbeing. Furthermore, our design takes a multimodal biopsychosocial approach that will generate new knowledge at multiple levels of evidence, from molecular bases to behavioral changes.Clinical trial registrationwww.ClinicalTrials.gov, identifier NCT04759950.
      PubDate: 2022-09-29T00:00:00Z
       
  • Saliva tau and phospho-tau-181 measured by Lumipulse in patients with
           Alzheimer’s disease

    • Authors: Josef Marksteiner, Michaela Defrancesco, Christian Humpel
      Abstract: Alzheimer’s disease (AD) is a severe neurodegenerative brain disorder. The determination of beta-amyloid (Aβ)-40, –42, total tau, and phospho-tau-181 (pTau181) in cerebrospinal fluid (CSF) using Lumipulse technology has been established as biomarkers for AD in recent years. As CSF collection is an invasive procedure, one aims to find biomarkers in blood or other human fluids, such as saliva. In the present study, we aim to measure these markers in human saliva. Using Salivettes, we collected saliva samples from healthy controls (n = 27), patients with AD dementia (n = 44), mild cognitive impairment (MCI) (n = 45), depression (n = 31), and 21 blinded samples, all older than 60 years. Lumipulse technology with a G600II was used to detect all four biomarkers. Our data show that the levels of total protein were highly variable and thus biomarker levels were corrected to 1 mg/ml of total protein. Saliva Aβ−40 and –42 were not detectable, because it was not recovered from the Salivettes. However, saliva total tau (577 ± 134 pg/mg, n = 22) and phospho-tau-181 (9.7 ± 1.3 pg/mg, n = 21) could be analyzed by Lumipulse technology. Saliva total tau levels were significantly decreased in patients with AD (≤ 300 pg/mg protein), while pTau181 levels (≥ 18 pg/mg protein) were significantly enhanced in patients with MCI compared to controls. Laboratory diagnosis with a cut-off of ≥ 18 pg/mg protein pTau181 (for MCI) and ≤ 300 pg/mg protein tau (for AD) for blinded samples could diagnose MCI and AD with an accuracy of 71.4%. Despite these initial promising results, the findings must be replicated in larger cohorts, and several technical problems due to saliva processing must be solved and Salivettes should not be used.
      PubDate: 2022-09-29T00:00:00Z
       
  • Nilotinib in Parkinson's disease: A systematic review and
           meta-analysis|Background|Methods|Results|Conclusions

    • Authors: Xiaolu Xie, Ping Yuan, Liqiu Kou, Xiu Chen, Jun Li, Yaling Li
      Abstract: BackgroundNilotinib, which inhibits cellular Abelson tyrosine kinase, may be an effective treatment for patients with Parkinson's disease (PD). The purpose of this study is to evaluate the outcomes of different doses of nilotinib in patients with PD.MethodsWe searched PubMed, Embase, Web of Science, and Cochrane Central Register of Controlled Clinical Trials from inception to 7 March 2022 to identify all randomized controlled trials (RCTs) of nilotinib reporting outcomes of interest in patients with PD. Outcomes included tolerability, efficacy, safety, and CSF biomarker levels. Review manager 5.4 software was used to analyze all data.ResultsThree RCTs with a total of 163 patients were included. No significant difference was found between 150 mg nilotinib or 300 mg nilotinib and placebo in terms of tolerability, adverse events, or HVA levels. 300 mg nilotinib showed significantly higher Movement Disorder Society Unified Parkinson's Disease Rating Scale III (MDS-UPDRS III) scores [SMD = 0.52, 95%CI = (0.12, 0.92), P = 0.01] and 3,4-dihydroxyphenylacetic acid (DOPAC) levels [SMD = 0.52, 95%CI = (0.12, 0.92), P = 0.01], and lower α-synuclein levels [SMD = −2.16, 95%CI = (−3.38, −1.84), P < 0.00001] compared with placebo. And compared with 150 mg nilotinib, 300 mg nilotinib showed significantly lower α-synuclein levels [SMD = −1.16, 95%CI = (−1.70, −0.61), P < 0.0001].ConclusionsAlthough our study demonstrated favorable tolerability and safety of different doses of nilotinib, and improvement in part of CSF biomarker levels of 300 mg nilotinib, the poor efficacy on motor outcomes indicated that nilotinib had no advantages in the clinic.
      PubDate: 2022-09-29T00:00:00Z
       
  • Cannabinoids for behavioral symptoms in severe dementia: Safety and
           feasibility in a long-term pilot observational study in nineteen
           patients|Context|Objectives|Methods|Results|Conclusion

    • Authors: Sophie Pautex, Federica Bianchi, Youssef Daali, Marc Augsburger, Christian de Saussure, James Wampfler, François Curtin, Jules Desmeules, Barbara Broers
      Abstract: ContextThe management of behavioral symptoms and rigidity in patients with dementia constitutes a significant challenge. Short-term studies suggest an interest in the use of medical cannabis, but long-term data are lacking.ObjectivesThe objective of this study was to investigate the feasibility and long-term safety of administering tetrahydrocannabinol/cannabidiol (THC/CBD) treatment as an additional drug to a poly medicated population with severe dementia, evaluate clinical improvements, and collect information on the pharmacokinetics of cannabinoids and possible drug–drug interactions.MethodsA prospective observational study of patients with severe dementia living in a long-term care home to whom the physicians had prescribed a medical cannabis treatment. Data were collected over 2 years. We assessed the changes in medical cannabis dosages, safety parameters, variations in neuropsychiatric problems, agitation, rigidity, the most invalidating daily activity, and disabling behavior trouble scores. We evaluated the pharmacokinetics of cannabinoids by measuring plasma levels and analyzing the enzymatic activity.ResultsWe assessed 19 patients (81.4 years—17 women and two men) receiving an average of 12.4 mg THC/24.8 mg CBD per day for up to 13 months, with no reported problems related to the treatment and limited adverse drug reactions. Clinical scores showed a marked improvement that was stable over time, deprescription of other medications, and care facilitated. The pharmacokinetic evaluation showed an expected slight reduction in the enzymatic activity of CYP1A2 and CYP2C19.ConclusionA long-term THC/CBD (1:2) medication can be administered safely and with overall positive clinical improvement to poly medicated older adults with severe dementia and associated problems. The results must be confirmed in a randomized trial.
      PubDate: 2022-09-29T00:00:00Z
       
  • TARDBP mutations in a cohort of Italian patients with Parkinson’s
           disease and atypical parkinsonisms|Background|Methods|Results|Conclusion

    • Authors: Cinzia Tiloca, Stefano Goldwurm, Narghes Calcagno, Federico Verde, Silvia Peverelli, Daniela Calini, Anna Lena Zecchinelli, Davide Sangalli, Antonia Ratti, Gianni Pezzoli, Vincenzo Silani, Nicola Ticozzi
      Abstract: BackgroundAggregates of TAR DNA-binding protein of 43 kDa (TDP-43) represent the pathological hallmark of most amyotrophic lateral sclerosis (ALS) and of nearly 50% of frontotemporal dementia (FTD) cases but were also observed to occur as secondary neuropathology in the nervous tissue of patients with different neurodegenerative diseases, including Parkinson’s disease (PD) and atypical parkinsonism. Mutations of TARDBP gene, mainly in exon 6 hotspot, have been reported to be causative of some forms of ALS and FTD, with clinical signs of parkinsonism observed in few mutation carriers.MethodsDirect DNA sequencing of TARDBP exon 6 was performed in a large Italian cohort of 735 patients affected by PD (354 familial and 381 sporadic) and 142 affected by atypical parkinsonism, including 39 corticobasal syndrome (CBS) and 103 progressive sopranuclear palsy (PSP). Sequencing data from 1710 healthy, ethnically matched controls were already available.ResultsFour TARDBP missense variants (p.N267S, p. G294A, p.G295S, p.S393L) were identified in four patients with typical PD and in two individuals with atypical parkinsonism (1 CBS and 1 PSP). None of the detected mutations were found in healthy controls and only the variant p.N267S was previously described in association to idiopathic familial and sporadic PD and to CBS.ConclusionIn this study we provide further insight into the clinical phenotypic heterogeneity associated with TARDBP mutations, which expands beyond the classical ALS and FTD diseases to include also PD and atypical parkinsonism, although with a low mutational frequency, varying considerably in different Caucasian populations. In addition, our study extends the spectrum of TARDBP pathogenetic mutations found in familial and sporadic PD.
      PubDate: 2022-09-29T00:00:00Z
       
  • A novel predictive strategy for the incidence of postoperative
           neurocognitive dysfunction in elderly patients with mild cognitive
           impairment

    • Authors: Yueying Liang, Xi Xin, Hongyan Wang, Wei Hua, Yi Wu, Xinyi Wang, Ping Li, Tong Zhou, Haiyun Wang
      Abstract: Objective: Preoperative levels of cognition-related biomarkers and intraoperative cerebral ischemia and hypoxia might cause postoperative neurocognitive dysfunction (PND). The aim of this study was to evaluate the predictive ability of preoperative plasma biomarkers along with cerebral oxygen saturation (SctO2) for the incidence of PND in elderly patients with mild cognitive impairment (MCI).Methods: A total of 210 patients aged 65–80 years undergoing spinal surgery were randomly assigned to three groups (n = 70 each): propofol, sevoflurane, and propofol/sevoflurane as anesthesia maintenance protocols. Propofol was administrated target-controlled infusion of 4 μg/ml (group P), the minimum alveolar concentration (MAC) of inhalation anesthetic sevoflurane was 1.3 (group S), and propofol was injected with a target-controlled plasma concentration of 1.2 μg/ml, accompanied by sevoflurane inhalation 0.7 MAC (group PS). Cognitive function was evaluated 1 day preoperatively and on the 7th day postoperatively. Preoperative levels of amyloidβ-40 (Aβ-40), Aβ-42, total tau protein (T-tau), phosphorylated tau protein (P-tau), and triggering receptors on myeloid cells-2 (TREM2) were investigated. SctO2 was monitored intraoperatively.Results: Aβ-42 had the strongest significant correlation with preoperative MoCA score. The value of Aβ-42 associated with a high risk of PND was 28.34 pg/ml, and the area under the curve (AUC) was predicted to be 0.711. When the preoperative level of Aβ-42 was 28.34 pg/ml, SctO2max% was 9.92%. The AUC was predicted to be 0.872, and the sensitivity and specificity were 0.833 and 0.841, respectively.Conclusion: Under the conditions of preoperative Aβ-42 less than 28.34 pg/ml, the intraoperative fluctuation range of cerebral oxygen saturation should be maintained within 9.92% to reduce the occurrence of PND in geriatric patients with MCI.
      PubDate: 2022-09-29T00:00:00Z
       
  • Gender difference in association between H-type hypertension and
           subcortical ischemic vascular disease|Background|Materials and
           methods|Results|Conclusion

    • Authors: Juan Wang, Yuan-Xue Xi, Jia-Qi Li, Wei-Wen Zhu
      Abstract: BackgroundSubcortical ischemic vascular disease (SIVD) is a leading cause of vascular dementia. The present study tries to explore not only the gender-specific association between H-type hypertension and SIVD but also the indirect effects of H-type hypertension on cognition through the ischemic brain injury caused by SIVD.Materials and methodsA total of 601 SIVD patients were included, comprising 322 males and 279 females. H-type hypertension was defined as hypertension accompanied with elevated serum total homocysteine (tHcy) level. The imaging manifestations of ischemic brain injury caused by SIVD were also evaluated, including white matter lesions (WML), lacunar infarction (LI) and brain atrophy (BA). Gender-specific subgroup analyses in association between H-type hypertension and SIVD were conducted, followed by a structural equation model based evaluation of the gender-specific mediating effects of SIVD on the relationship between H-type hypertension and cognition.ResultsFor males, there was no noticeable difference in WML, LI and BA scores among control group, isolated hypertension group, isolated high tHcy group, and H-type hypertension group in most brain regions, but significant difference was found in all brain regions for females. Multiple regression analyses showed that H-type hypertension was significantly associated with WML, LI and BA for females, but not for males. For males, H-type hypertension mainly affected cognition through direct effect, while the H-type hypertension effect was mediated by ischemic brain injury caused by SIVD for females.ConclusionH-type hypertension was more closely related to SIVD for females than males, suggesting a gender-specific difference in association patterns between H-type hypertension and cognition.
      PubDate: 2022-09-29T00:00:00Z
       
  • Synergistic multi-joint kinematic strategies to reduce tripping risks
           during obstacle-crossing in older long-term Tai-Chi Chuan
           practitioners|Introduction|Methods|Results|Conclusion

    • Authors: Hsing-Po Huang, Chien-Chung Kuo, Shiuan-Huei Lu, Sheng-Chang Chen, Tsung-Jung Ho, Tung-Wu Lu
      Abstract: IntroductionLosing balance or tripping over obstacles is considered one of the most common causes of falls in the elderly. Tai-Chi Chuan (TCC) has been shown to improve muscle strength, inter-joint coordination and balance control in the elderly. This study aimed to determine whether older long-term TCC practitioners would show multi-joint kinematic strategies that would reduce the risk of tripping during obstacle-crossing compared to peers without TCC experience.MethodsThree-dimensional motions of the pelvis and lower extremities were measured using a motion capture system in fifteen older long-term TCC practitioners (TCC group) and 15 healthy controls without TCC experience during walking and crossing obstacles of three different heights. Crossing angles of the pelvis and lower limbs and toe-obstacle clearances were obtained and analyzed using two-way analyses of variance to study the between-subject (group) and within-subject (height) effects. A multi-link system approach was used to reveal the relationship between joint angular changes and toe-obstacle clearances.ResultsCompared to the controls, the TCC group showed increased leading and trailing toe-obstacle clearances (p < 0.05) with increased pelvic hiking and hip flexion but decreased hip adduction on the swing side and decreased knee flexion on the stance side during leading-limb crossing (p < 0.05), and increased pelvic hiking and anterior tilt but decreased hip adduction on the swing side, and decreased knee flexion on the stance side during trailing limb crossing (p < 0.05). All significant joint angular changes contributed to the increases in the toe-obstacle clearances.ConclusionThe current study identified the kinematic changes of the pelvis and the lower limb joints and revealed a specific synergistic multi-joint kinematic strategy to reduce tripping risks during obstacle-crossing in older long-term TCC practitioners as compared to non-TCC controls. The observed multi-joint kinematic strategies and the associated increases in toe-obstacle clearances appeared to be related to the training characteristics of TCC movements. Long-term TCC practice may be helpful for older people in reducing the risk of tripping and the subsequent loss of balance.
      PubDate: 2022-09-29T00:00:00Z
       
  • Alleviation of cisplatin-induced neuropathic pain, neuronal apoptosis, and
           systemic inflammation in mice by rapamycin

    • Authors: Moureq Alotaibi, Faten Al-Aqil, Faleh Alqahtani, Miteb Alanazi, Ahmed Nadeem, Sheikh F. Ahmad, Rebeca Lapresa, Metab Alharbi, Abdulrahman Alshammari, Muteb Alotaibi, Tareq Saleh, Raed Alrowis
      Abstract: Platinum-based chemotherapeutic treatment of cancer patients is associated with debilitating adverse effects. Several adverse effects have been well investigated, and can be managed satisfactorily, but chemotherapy-induced peripheral neuropathy (CIPN) remains poorly treated. Our primary aim in this study was to investigate the neuroprotective effect of the immunomodulatory drug rapamycin in the mitigation of cisplatin-induced neurotoxicity. Pain assays were performed in vivo to determine whether rapamycin would prevent or significantly decrease cisplatin-induced neurotoxicity in adult male Balb/c mice. Neuropathic pain induced by both chronic and acute exposure to cisplatin was measured by hot plate assay, cold plate assay, tail-flick test, and plantar test. Rapamycin co-treatment resulted in significant reduction in cisplatin-induced nociceptive-like symptoms. To understand the underlying mechanisms behind rapamycin-mediated neuroprotection, we investigated its effect on certain inflammatory mediators implicated in the propagation of chemotherapy-induced neurotoxicity. Interestingly, cisplatin was found to significantly increase peripheral IL-17A expression and CD8- T cells, which were remarkably reversed by the pre-treatment of mice with rapamycin. In addition, rapamycin reduced the cisplatin-induced neuronal apoptosis marked by decreased neuronal caspase-3 activity. The rapamycin neuroprotective effect was also associated with reversal of the changes in protein expression of p21Cip1, p53, and PUMA. Collectively, rapamycin alleviated some features of cisplatin-induced neurotoxicity in mice and can be further investigated for the treatment of cisplatin-induced peripheral neuropathy.
      PubDate: 2022-09-28T00:00:00Z
       
  • Random walk: Random number generation during backward and forward walking-
           the role of aging

    • Authors: Maxim Shapiro, Samuel Shaki, Uri Gottlieb, Shmuel Springer
      Abstract: Deficits in executive function, visuospatial abilities, and cognitive embodiment may impair gait performance. This study aimed to investigate the effect of age on random number generation (RNG) performance during forward and backward locomotion to assess cognitive flexibility and cognitive embodiment during walking. Another aim was to examine the effect of age on the associations of RNG performance during walking with stride time variability (STV), the percentage of double support (DS%), and visuospatial abilities as measured by a spatial orientation test (SOT). Twenty old (age 68.8 ± 5.3, 65% female) and 20 young (age 25.2 ± 2.2, 45% female) adults generated random numbers during backward walking (BW) and forward walking (FW) over-ground and over a treadmill with an internal focus of attention and visual-attentive distraction; six walking conditions in total. To assess cognitive flexibility, sample entropy was calculated for each RNG sequence. The average of the first 5 numbers in each RNG task was calculated to assess the relationship between small/large numbers and movement direction. STV and DS% were recorded using inertial measurement units, and spatial orientation was measured using a computerized test. The older subjects had less flexibility in generating random numbers in three of the six walking conditions. A negative correlation between RNG flexibility and STV was found in older adults during treadmill BW with visual-attentive distraction and forward over-ground walking, whereas no correlations were demonstrated in the young group. The spatial orientation score (a higher value means a worse outcome) correlated positively with RNG flexibility in the older group under all walking conditions, suggesting that older adults with better visuospatial orientation have lower cognitive flexibility, and vice versa. There was no correlation between small/large numbers and direction of motion in either group. The correlation between RNG flexibility and STV may indicate similar executive control of verbal and gait rhythmicity in old adults. Conversely, our results suggest that cognitive flexibility and visuospatial ability may decline differently.
      PubDate: 2022-09-28T00:00:00Z
       
  • Economic evaluation of the screening for Alzheimer’s disease in
           China|Background|Methods|Results|Conclusion

    • Authors: Yinan Ren, Dachuang Zhou, Qian Xing, Fangfang Gong, Wenxi Tang
      Abstract: BackgroundWe evaluated the cost-effectiveness of the screening in mainland China for Alzheimer’s disease (AD) patients aged over 60.MethodsIndividuals in mainland China, received an initial screening by questionnaire on mental state, and those with scores deemed suspicious for AD were referred to diagnostic tests. A 9-state Markov model was developed to simulate the disease progression of a cohort of 100,000 subjects aging from 60 to 80. In addition, several scenarios were analyzed to assess the robustness under different screening frequency, starting age, the duration of drug effects, and the health status of subjects.ResultsThe ICER of AD screening was 26413.77 USD per QALY [quality-adjusted life-year (QALY)] compared with no screening. The number of deaths and severe AD cases who did not receive treatment averted by screening accounted for 0.076 and 0.006% of the total population, respectively, and the net monetary benefit was 128.29 USD per capita. Under the thresholds of one and three times the gross domestic product per capita, the probability of screening being cost-effective was approximately 18 and 77%, respectively. The ICER decreased to 18132.96USD per QALY when the drug effect was prolonged, and increased when the frequency of screening was increased, the starting age was postponed, and patients suffering from comorbidities were more. However, the number of severe AD cases and deaths declined when the screening frequency increased.ConclusionScreening for AD in individuals over 60 can reduce the numbers of severe AD cases and deaths and may be cost-effective, depending on factors such as screening frequency, starting age of screening, and duration of drug effects. Additionally, mild cognitive impairment (MCI) is an important stage at which the burden of progression to AD may be reduced and the cost-effectiveness of screening may be improved.
      PubDate: 2022-09-28T00:00:00Z
       
  • Deep brain stimulation in the globus pallidus alleviates motor activity
           defects and abnormal electrical activities of the parafascicular nucleus
           in parkinsonian rats

    • Authors: Jinlu Xie, Zheng Chen, Tingting He, Hengya Zhu, Tingyu Chen, Chongbin Liu, Xuyan Fu, Hong Shen, Tao Li
      Abstract: Deep brain stimulation (DBS) is an effective treatment for Parkinson’s disease (PD). The most common sites targeted for DBS in PD are the globus pallidus internal (GPi) and subthalamic nucleus (STN). However, STN-DBS and GPi-DBS have limited improvement in some symptoms and even aggravate disease symptoms. Therefore, discovering new targets is more helpful for treating refractory symptoms of PD. Therefore, our study selected a new brain region, the lateral globus pallidus (GP), as the target of DBS, and the study found that GP-DBS can improve motor symptoms. It has been reported that the thalamic parafascicular (PF) nucleus is strongly related to PD pathology. Moreover, the PF nucleus and GP have very close direct and indirect fiber connections. However, whether GP-DBS can change the activity of the PF remains unclear. Therefore, in this study, we monitored the activity changes in the PF nucleus in PD rats during a quiet awake state after GP-DBS. We found that GP-DBS could reverse the electrical activity of the PF nucleus in PD model rats, including the discharge pattern of the neurons and the local field potential (0.7–12 and 12–70 Hz). Based on the results mentioned above, PF activity in PD model rats could be changed by GP-DBS. Thus, the normalization of PF neuronal activity may be a potential mechanism for GP-DBS in the treatment of PD; these findings lay the foundation for PD treatment strategies.
      PubDate: 2022-09-28T00:00:00Z
       
  • Effects of aging on cognitive and brain inter-network integration patterns
           underlying usual and dual-task gait
           performance|Introduction|Methods|Results|Conclusion

    • Authors: Amgad Droby, Eleanna Varangis, Christian Habeck, Jeffrey M. Hausdorff, Yaakov Stern, Anat Mirelman, Inbal Maidan
      Abstract: IntroductionAging affects the interplay between cognition and gait performance. Neuroimaging studies reported associations between gait performance and structural measures; however, functional connectivity (FC) analysis of imaging data can help to identify dynamic neural mechanisms underlying optimal performance. Here, we investigated the effects on divergent cognitive and inter-network FC patterns underlying gait performance during usual (UW) and dual-task (DT) walking.MethodsA total of 115 community-dwelling, healthy participants between 20 and 80 years were enrolled. All participants underwent comprehensive cognitive and gait assessments in two conditions and resting state functional MRI (fMRI) scans. Inter-network FC from motor-related to 6 primary cognitive networks were estimated. Step-wise regression models tested the relationships between gait parameters, inter-network FC, neuropsychological scores, and demographic variables. A threshold of p < 0.05 was adopted for all statistical analyses.ResultsUW was largely associated with FC levels between motor and sustained attention networks. DT performance was associated with inter-network FC between motor and divided attention, and processing speed in the overall group. In young adults, UW was associated with inter-network FC between motor and sustained attention networks. On the other hand, DT performance was associated with cognitive performance, as well as inter-network connectivity between motor and divided attention networks (VAN and SAL). In contrast, the older age group (> 65 years) showed increased integration between motor, dorsal, and ventral attention, as well as default-mode networks, which was negatively associated with UW gait performance. Inverse associations between motor and sustained attention inter-network connectivity and DT performance were observed.ConclusionWhile UW relies on inter-network FC between motor and sustained attention networks, DT performance relies on additional cognitive capacities, increased motor, and executive control network integration. FC analyses demonstrate that the decline in cognitive performance with aging leads to the reliance on additional neural resources to maintain routine walking tasks.
      PubDate: 2022-09-28T00:00:00Z
       
  • Machine learning models identify ferroptosis-related genes as potential
           diagnostic biomarkers for Alzheimer’s disease

    • Authors: Yanrao Deng, Yanjin Feng, Zhicheng Lv, Jinli He, Xun Chen, Chen Wang, Mingyang Yuan, Ting Xu, Wenzhe Gao, Dongjie Chen, Hongwei Zhu, Deren Hou
      Abstract: Alzheimer’s disease (AD) is a complex, and multifactorial neurodegenerative disease. Previous studies have revealed that oxidative stress, synaptic toxicity, autophagy, and neuroinflammation play crucial roles in the progress of AD, however, its pathogenesis is still unclear. Recent researches have indicated that ferroptosis, an iron-dependent programmed cell death, might be involved in the pathogenesis of AD. Therefore, we aim to screen correlative ferroptosis-related genes (FRGs) in the progress of AD to clarify insights into the diagnostic value. Interestingly, we identified eight FRGs were significantly differentially expressed in AD patients. 10,044 differentially expressed genes (DEGs) were finally identified by differential expression analysis. The following step was investigating the function of DEGs using gene set enrichment analysis (GSEA). Weight gene correlation analysis was performed to explore ten modules and 104 hub genes. Subsequently, based on machine learning algorithms, we constructed diagnostic classifiers to select characteristic genes. Through the multivariable logistic regression analysis, five features (RAF1, NFKBIA, MOV10L1, IQGAP1, FOXO1) were then validated, which composed a diagnostic model of AD. Thus, our findings not only developed genetic diagnostics strategy, but set a direction for further study of the disease pathogenesis and therapy targets.
      PubDate: 2022-09-28T00:00:00Z
       
 
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