Aging & Longevity
Association between near functional visual acuity and physical function in community-dwelling older adults: a cross-sectional study : Keio university global research Institute baseline survey
CONCLUSIONS: The study showed an association between quantitatively assessed visual and physical functions in community-dwelling older adults living in Japan. Thus, the findings indicate that maintaining and enhancing grip strength and visual function in older adults may be an important factor in leading a healthy and fulfilling life.
Publisher Correction: Acetylation profiling by Iseq-Kac reveals insights into HSC aging and lineage decision
No abstract
Senescence and inflammation are unintended adverse consequences of CRISPR-Cas9/AAV6-mediated gene editing in hematopoietic stem cells
Gene editing (GE) using homology-directed repair (HDR) in hematopoietic stem and progenitor cells (HSPCs) offers promise for long-range gene correction of inherited genetic disorders. However, cellular responses induced by CRISPR-Cas9/AAV6 engineering impair the long-term repopulating potential of HDR-edited HSPCs, adversely impacting the safety and efficacy of clinical translation. Our study uncovers a durable senescence-like response in genetically engineered HSPCs triggered by p53 and...
Temporal trends in the incidence of intracerebral hemorrhage from 1992 to 2021: An age-period-cohort analysis based on the global burden of disease study 2021
CONCLUSION: There was a downward trend in global ICH incidence from 1992 to 2021. Economically developed countries must remain vigilant against the rise in ICH cases due to aging. For males, primary prevention should target the younger adults, whereas for females, it should target aged population.
A blood-based epigenetic clock for intrinsic capacity predicts mortality and is associated with clinical, immunological and lifestyle factors
Age-related decline in intrinsic capacity (IC), defined as the sum of an individual's physical and mental capacities, is a cornerstone for promoting healthy aging by prioritizing maintenance of function over disease treatment. However, assessing IC is resource-intensive, and the molecular and cellular bases of its decline are poorly understood. Here we used the INSPIRE-T cohort (1,014 individuals aged 20-102 years) to construct the IC clock, a DNA methylation-based predictor of IC, trained on...
Ndufs4(-/-) mice: a testing ground for longevity interventions
Mice missing the complex I subunit Ndufs4 of the electron transport chain are widely used as a leading animal model of Leigh syndrome, a pediatric neurodegenerative disorder that leads to premature death. More broadly, this animal model has enabled a better understanding of the pathophysiology of mitochondrial disease and mitochondrial dysfunction in sporadic disorders. Intriguingly, longevity interventions are very effective at treating symptoms of disease in this model. Herein, we introduce...
Transitions and trajectories in intrinsic capacity states over time: a systematic review
Intrinsic Capacity (IC) is a crucial measure of the comprehensive physiological and psychological capabilities of older adults, playing a key role in assessing healthy aging. This systematic review aims to explore the trajectories of IC in older adults, as well as the associated determinants and health outcomes. By searching through PubMed, Embase, Ovid, and Web of Science databases, we identified 13 studies that met our inclusion criteria. To ensure the rigor of the review, the Newcastle-Ottawa...
Adolescent maturation of cortical excitation-inhibition ratio based on individualized biophysical network modeling
The excitation-inhibition ratio is a key functional property of cortical microcircuits which changes throughout an individual's lifespan. Adolescence is considered a critical period for maturation of excitation-inhibition ratio. This has primarily been observed in animal studies. However, there is limited human in vivo evidence for maturation of excitation-inhibition ratio at the individual level. Here, we developed an individualized in vivo marker of regional excitation-inhibition ratio in...
The impact of behavioral patterns on accelerated aging in the UK biobank
CONCLUSIONS: Our findings demonstrate that modifiable lifestyle patterns-specifically increased leisure-time physical activity, optimized sleep duration, and reduced sedentary behavior-are significantly associated with attenuated biological aging. These results suggest behavioral modifications may represent viable strategies for decelerating aging.
Plasmapheresis as a Potential Generalizable Therapy for Myocardial Infarction
Myocardial infarction (MI) remains the leading cause of mortality and morbidity worldwide. It is caused by a thrombotic occlusion of coronary vessel/s that leads to cardiomyocyte death. As a response, inflammatory and fibrotic responses are initiated to replace the necrotic tissue and remodel the heart. However, in most cases, these responses are excessively activated, which accentuates the injury and causes adverse cardiac remodeling, often leading to heart failure. This is highly attributed to...
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...
Three dimensional multiscalar neurovascular nephron connectivity map of the human kidney across the lifespan
The human kidney maintains homeostasis through a complex network of up to a million nephrons, its fundamental tissue units. Using innovative tissue processing and light sheet fluorescence microscopy, we mapped the 3D neurovascular connectivity of nephrons to understand how their structural organization enables coordinated functions like filtration, absorption, and blood pressure regulation. Our analysis revealed developmental changes in glomerular orientation, density, volume, and innervation...
Epigenetic regulation of neural stem cell aging in the mouse hippocampus by Setd8 downregulation
Neural stem cells (NSCs) in the mammalian brain decline rapidly with age, leading to impairment of hippocampal memory function in later life. However, the relationship between epigenetic remodeling and transcriptional regulation that compromises hippocampal NSC activity during the early stage of chronological aging remains unclear. Here, we performed single-cell RNA sequencing (scRNA-seq) and single-cell ATAC sequencing (scATAC-seq) on NSCs and newly generated neurons across different stages....
hUSI is a robust transcriptome-based cellular senescence prediction tool
No abstract
Cysteine depletion triggers adipose tissue thermogenesis and weight loss
Caloric restriction and methionine restriction-driven enhanced lifespan and healthspan induces 'browning' of white adipose tissue, a metabolic response that increases heat production to defend core body temperature. However, how specific dietary amino acids control adipose thermogenesis is unknown. Here, we identified that weight loss induced by caloric restriction in humans reduces thiol-containing sulfur amino acid cysteine in white adipose tissue. Systemic cysteine depletion in mice causes...
ROMO1 overexpression protects the mitochondrial cysteinome from oxidations in aging
Reactive thiols of proteinaceous cysteines are vital to cell biology by serving as sensor, effector and buffer of environmental redox fluctuations. Being the major source, as well as the prime target, of reactive oxygen species (ROS), mitochondria confront great challenges in preserving their thiol pool. Here we show that ROS modulator 1 (ROMO1), a small inner mitochondrial membrane protein, plays a role in protecting the mitochondrial cysteinome. ROMO1 is redox sensitive and reactive and...
The secretome of senescent monocytes predicts age-related clinical outcomes in humans
Cellular senescence increases with age and contributes to age-related declines and pathologies. We identified circulating biomarkers of senescence and related them to clinical traits in humans to facilitate future noninvasive assessment of individual senescence burden, and efficacy testing of novel senotherapeutics. Using a nanoparticle-based proteomic workflow, we profiled the senescence-associated secretory phenotype (SASP) in THP-1 monocytes and examined these proteins in 1,060 plasma samples...
Morphological features of the domestic house cricket (Acheta domesticus) for translational aging studies
Aging alters morphology and locomotor function in diverse organisms, yet standardized model systems for studying these changes remain limited to a relatively few species. Here, we present a comprehensive analysis of age- and sex-dependent morphological variations in house crickets (Acheta domesticus), integrating refined husbandry protocols to enhance reproducibility and translational relevance. To ensure data consistency, we implemented a standardized husbandry framework incorporating...
Aging and Longevity: Latest results from PubMed
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