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Normal Ageing Impacts the Extent and Diversity of Neural Plasticity Induced in the Mouse Brain With Repetitive Transcranial Magnetic Stimulation

5 months ago
Repetitive transcranial magnetic stimulation (rTMS) is an attractive tool to promote healthy brain ageing in older adults and treat age-related neurological conditions. Despite its popularity, the neurological processes and plasticity mechanisms altered by rTMS in the aged brain, and where these changes occur in the brain are unknown. Furthermore, it is not known why different rTMS protocols induce different changes in the aged brain, or why rTMS is less effective in older adults compared to...
Rebecca C S Ong

Association Between Plasma Metabolomic Profile and Machine Learning-Based Brain Age

5 months ago
Metabolomics has been associated with cognitive decline and dementia, but the relationship between metabolites and brain aging remains unclear. We aimed to investigate the associations of metabolomics with brain age assessed by neuroimaging and to explore whether these relationships vary according to apolipoprotein E (APOE) ε4. This study included 17,770 chronic brain disorder-free participants aged 40-69 years from UK Biobank who underwent neuroimaging scans an average of 9 years after...
Yang Li

Physiological health Age (PhysAge): a novel multi-system molecular timepiece predicts health and mortality in older adults

5 months ago
The complexity of epigenetic changes that accompany aging has been distilled into a number of molecular timepieces-termed epigenetic clocks-that characterize the pace of biological aging to differing degrees. Here, we develop and validate a DNA methylation-based Physiological health Age (PhysAge) score, comprised of eight DNA methylation surrogates to represent multi-system physiology and developed from commonly measured clinical biomarkers: CRP, peak flow, pulse pressure, HDL-cholesterol,...
Thalida Em Arpawong

Frailty, malnutrition risk, and kidney function impairment in older adults: Singapore longitudinal ageing study

5 months ago
Kidney function declines progressively with age, with chronic kidney disease (CKD) affecting more than half of community-dwelling older adults. Identifying risk factors beyond the established ones (such as diabetes and hypertension) is crucial for prevention. Frailty and malnutrition are prevalent in older adults, yet the effect of these factors on their decline of kidney function remains underexplored. This study aimed to elucidate the associations between frailty, malnutrition, and renal...
Authors Chin Yee Cheong

Inflamm-aging as a diverse and context-dependent process: from species and population differences to individual trajectories

5 months ago
Inflamm-aging is widely considered a hallmark of aging, yet emerging evidence challenges its universality. Here, we re-examine inflamm-aging through an eco-evolutionary lens, underlining its context dependence across biological scales. Combining mechanistic, evolutionary, comparative, anthropological, genetic, and environmental evidence, we show how fundamental inflammatory mechanisms are integrated and regulated in diverse biological contexts, representing a suite of flexible stress responses....
Maximilien Franck

Neighborhood Social Cohesion, Physical Disorder, and Multiple Chronic Conditions in Older Adults: An Examination of Racial/Ethnic Differences

5 months ago
This study examines how neighborhood social cohesion and physical disorder, measured at baseline and as change over time, are associated with multiple chronic conditions (MCCs) among older adults and whether these associations vary by race/ethnicity. Using 6 years of data from the National Health and Aging Trends Study (2015-2021), mixed-effects Poisson regression models were applied to a sample of 3,389 community-dwelling older adults. Higher social cohesion at baseline and increases in...
Jeein Law

How does intergenerational support from adult children shape the intrinsic capacity of older adults? Empirical evidence from the CHARLS

5 months ago
CONCLUSION: intergenerational support from adult children significantly enhances the intrinsic capacity of older adults by promoting social engagement and maintaining functional ability. To advance healthy and active aging, policy efforts should adopt a function-oriented approach that strengthens both family-based support systems and community care infrastructure, while fostering cross-generational resource sharing and coordinated support.
Zhi Zeng