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Red Blood Cell-Derived Exosomes as Mediators of Age-Related Neurodegeneration
Age-associated neurodegenerative diseases (NDDs), including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, are marked by progressive degeneration of the nervous system. Current diagnostic approaches, such as neuroimaging and cerebrospinal fluid biomarkers, are invasive, costly, and lack early diagnostic reliability. Recent studies highlight the potential of extracellular vesicles, particularly exosomes, derived from erythrocytes or red blood cells (RBCs), as...
Cerebral pulsatility might be a driver of neurofunctional reorganization in the aging brain: an MRI and NIRS study
Age-related increases in cerebral pulsatility are thought to stress cerebral microcirculation, with effects that may vary across different brain regions. The aging brain also undergoes neurofunctional changes to preserve and, in some cases, enhance cognitive abilities. This study investigated the association between cerebral pulsatility and neurofunctional changes in aging. Sixty healthy adults were divided into two groups of younger (aged 19-31 years) and older adults (aged 62-75 years)....
Cross-Analysis of Single-Cell Transcriptomic Datasets Reveals Conserved Neurogenic Gene Signatures and New Insights Into Neural Stem Cell Aging
Hippocampal adult neural stem cells (NSCs) contribute to neurogenesis and astrogliogenesis throughout life. They play multifaceted roles in hippocampal function, including memory processing, stress regulation, and cognitive flexibility. Located in unique neurogenic niches like the subgranular zone of the hippocampal dentate gyrus, NSCs exhibit notable heterogeneity and can be classified into quiescent, activated, and intermediate transitioning states. This diversity, while instrumental to their...