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Age-associated degeneration of neuromuscular junctions (NMJs) contributes to sarcopenia and motor function decline, yet the mechanisms that drive this dysfunction in aging remain poorly defined. Here, we demonstrate that postsynaptic mitochondria are significantly diminished in quantity in old-aged skeletal muscle, correlating with increased denervation and delayed reinnervation following nerve injury. Single-nucleus RNA sequencing before and after sciatic nerve crush from young and old-aged...

CONCLUSION: The findings emphasize the need for policy-driven urban planning that not only prioritizes green space accessibility but also addresses equity and supports healthy aging.

CONCLUSION: Using easily accessible blood biomarkers, it is possible to estimate chronological age with an MAE of 8.73 years in a large Central European population. Because the present work does not include validation against clinical outcomes, the resulting index should be regarded as a potential biological age marker. Future studies are needed to test its association with morbidity, mortality, and established biological age measures in independent cohorts.

Oxidative stress, driven by an imbalance between oxidants and antioxidants, disrupts redox homeostasis and contributes to the development of chronic diseases, including cancer, diabetes, neurodegenerative disorders, and aging. The NRF2-KEAP1 pathway is a pivotal cellular defense mechanism against oxidative stress, regulating the transcription of cytoprotective genes. Pharmacological NRF2 activation has emerged as a promising strategy to mitigate oxidative stress-related pathologies; however,...