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A timeline of structural and functional consequences to ipRGCs in a mouse model of Alzheimer's disease

3 weeks 4 days ago
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that affects cognitive, sensory and motor systems, including the visual system and has a significant impact on autonomy and quality of life. Emerging evidence suggests that visual system abnormalities may enable early detection and monitoring for AD, appearing before cognitive symptoms. Intrinsically photosensitive retinal ganglion cells (ipRGCs or mRGCs) are among the first neurons affected in AD. This study investigates the...
Brandy S Recio

Accelerated Cognitive Decline in Pain-Insomnia-Depression Syndrome: Longitudinal Evidence and Protective Effects of Healthy Lifestyles

3 weeks 4 days ago
CONCLUSION AND IMPLICATIONS: PIDS and higher cumulative symptom load are associated with accelerated cognitive decline in middle-aged and older adults. Healthy lifestyle adherence mitigates these effects, underscoring integrated strategies combining symptom management with lifestyle interventions to reduce dementia risk.
Yuanjun Zeng

Acetylation-Dependent Histone H2AX Exchange Suppresses Pathological Senescence via MDC1 Degradation

3 weeks 4 days ago
Cellular senescence has a dual role in both tumor suppression and the promotion of age-related diseases. This paradox suggests the existence of functionally distinct "beneficial" and "detrimental" senescent states, yet the molecular basis that governs their fate has remained elusive. Here, we reveal that the dynamic exchange of histone H2AX on chromatin functions as an essential quality control mechanism that dictates the quality of senescence. We demonstrate that the histone acetyltransferase...
Masae Ikura

Integrating menopause duration and plasma metabolomics enhances cardiovascular risk stratification in aging women

3 weeks 4 days ago
Menopause-related metabolic remodeling may contribute to the excess cardiovascular disease (CVD) burden in aging women, yet the longitudinal metabolic correlates of time since menopause (TSM) and their prognostic value are unclear. In this prospective analysis of 67,582 postmenopausal women without baseline CVD from the UK Biobank, we profiled 251 plasma metabolites by nuclear magnetic resonance and followed participants for a median 13.7 years (8313 incident CVD events). Elastic net regression...
Qi Wang