Aging & Longevity

CONCLUSIONS: In summary, the different brain aging patterns, each based around specific underlying circuits, may serve as neuroimaging biomarkers for understanding the neural aging mechanisms in commonly occurring brain disorders. Future studies should test whether these disorder-specific brain aging patterns can serve as useful biomarkers to guide critical clinical decision-making.

Reproductive aging in mice leads to estropause, characterized by estrous cycle irregularity and eventual cessation, yet its underlying mechanism remains unclear. Here, we present a comprehensive single-cell atlas of mouse ovaries across precisely defined reproductive stages-from young (regular cycling) through the estropausal transition (regular vs. irregular cycling) to post-estropause (acyclic)-and of ovary-specific senescent cells defined by high senescence-associated β-galactosidase...

During aging, hepatic structural, metabolic, and regulatory impairments collectively contribute to the decline of hepatic and systemic function. As a core hepatic physiological process, ammonia metabolism is essential for maintaining systemic nitrogen homeostasis. However, how ammonia metabolism is altered during aging, and whether these changes contribute to hepatic and systemic decline, remain insufficiently understood. In this review, current evidence linking hepatic ammonia metabolism to...

Sepsis-associated acute kidney injury (SA-AKI) is a common and devastating disease that has a significantly higher incidence and greater severity in elderly patients, but the molecular basis underlying SA-AKI in the elderly is largely unknown. Recent studies have proved autophagy as an intrinsic protective mechanism against AKI; however, the role and regulation of autophagy in aging kidneys remain unclear. Here we demonstrate that defective autophagy activation in aging kidneys is a key to their...

Atherosclerosis (AS) is closely linked to endothelial cell (EC) senescence and mitochondrial dysfunction, which impair vascular repair. Resveratrol (RSV) has antioxidant, anti-inflammatory, and pro-angiogenic effects, but its clinical use is restricted by poor bioavailability. This study aimed to construct a platelet membrane-coated resveratrol nanosystem (PM@RSV NPs) and investigate its mechanism of action in delaying the progression of AS by activating FOXM1 to improve mitochondrial function,...

CONCLUSIONS AND IMPLICATIONS: The global burden of HHD-related HF continues to rise, primarily fueled by population aging, though regional trends, and underlying drivers vary substantially. To address this challenge effectively, tailored prevention strategies should be implemented alongside global collaboration and equitable health care resource allocation, ensuring region-specific precision in HHD-related HF control.

Healthy aging is defined as remarkable longevity (beyond 90 years of age) accompanied by preserved functional status and absence of major clinical conditions. Although the incidence of cardiac arrhythmias, including atrial fibrillation (AF), increases with age, epidemiological studies revealed a paradoxical reduction of AF prevalence in centenarians compared to octogenarians and nonagenarians. Emerging evidence indicates that the apparent cardioprotection in healthy aging may be related to...

In a previous study, chloroquine (CLQ) administration extended lifespan in middle-aged male NMRI mice without systemic toxicity, challenging the view that blockage of autophagy is uniformly detrimental. Here, we evaluated a modified step-down intermittent CLQ regimen in aged female Sprague-Dawley rats designed to minimize long-term toxicity while maintaining biological activity. CLQ treatment significantly extended median lifespan and increased maximum lifespan by 19%. Treated rats exhibited a...

Aging is associated with increased oxidative stress, which leads to pathological vulnerability. Spermidine is a ubiquitous natural polyamine found across all living organisms studied so far and present in multiple food sources. In humans, spermidine levels decline with aging, and a possible connection between reduced endogenous spermidine concentration and age-related organ degeneration has been proposed. We outline recent studies that address the potential contribution of spermidine to...

Microglia, the resident macrophages of the CNS parenchyma, are recognized as highly plastic, transcriptionally diverse cells whose phenotypes are moulded by development, region, sex, age, genotype and environment. Advances in single-cell and single-nucleus transcriptomics, chromatin accessibility profiling, and spatial multi-omics have negated binary frameworks of 'resting versus activated' or 'M1 (pro-inflammatory) versus M2 (anti-inflammatory)' and revealed a multidimensional state space that...

Cytoskeleton is an important component of cell structure and function. In the cardiovascular system, it is involved in the remodeling process of a variety of cardiovascular diseases, including cardiac fibrosis, valvular disease, atrial fibrillation, thoracic aortic aneurysm and vascular stiffness related changes. Recent studies have shown that there is a significant synergy between cytoskeletal regulation and epigenetic processes. Notably, epigenetic alterations have been identified as one of...

Aging is a biologically tractable process. Telomerase reverse transcriptase (TERT) has emerged as an upstream regulator coordinating several hallmarks of aging across preclinical models. Beyond maintaining telomeres, TERT influences mitochondrial health, epigenetic regulation, inflammation and stem cell function. Multiple translational strategies are being explored to modulate TERT. In mice and human cell models, restoration of physiological-range TERT expression characteristic of younger cells,...

Unsupervised serious video games on the SmartMe&You home telemonitoring platform may enable the assessment of cognitive fluctuations in older individuals, with or without cognitive deficits. Here, we tested their validity in cognitively unimpaired older adults (Healthy) and patients with mild cognitive impairment and mild to moderate dementia due to Parkinson's disease (PDCD). Such validity was assessed using Mini-Mental State Examination (MMSE) scores and resting-state eyes-closed...

Epigenetic clocks derived from DNA methylation robustly predict biological aging, health, and mortality, yet differ substantially in their predictive profiles. The biological processes underlying these differences remain poorly understood. Using data from 3227 participants in the U.S. Health and Retirement Study, with contemporaneous DNA methylation and RNA-sequencing, we examined the five most widely used epigenetic clocks (Horvath, Hannum, PhenoAge, GrimAge, and DunedinPACE). We conducted...

CONCLUSIONS: Objectively measured sensory impairments were highly prevalent among US older adults and were associated with an increased risk of anxiety, but not depressive symptoms over a short follow-up duration. Self-reports considerably underestimated true prevalence of mild- to- moderate impairment, emphasizing the need for routine objective assessment in clinical practice and research.

CONCLUSIONS: The T-EAT-10 is a practical and highly effective screening tool for identifying aspiration pneumonia risk in institutionalized elderly populations. A clinical threshold of >12 is recommended for identifying high-risk residents, which is substantially higher than the standard dysphagia screening cut-off. Systematic screening using T-EAT-10 and NUFFE-TR should be integrated into routine geriatric care in nursing homes to improve preventive strategies.

Aging hematopoiesis exhibits progressive myeloid skewing and impaired lymphopoiesis, driving age-related blood disorders. We show that multipotent progenitors (MPPs) mediate this lineage imbalance. Aging expands myeloid-biased MPP3 cells while functionally compromising MPP4 lymphoid potential, collectively skewing hematopoietic output toward the myeloid lineage. We identify Bcl11a as a dosage-sensitive regulator of MPP fate: Bcl11a suppresses Fer to restrain premature myeloid differentiation in...

CONCLUSION: Public health strategies should emphasize physical activity, healthy diets, weight control, and improved management of chronic diseases. These efforts align with the sustainable development goal 3 (SDG 3); Good Health and Well-being, particularly Target 3.4, which aims to reduce premature mortality from non-communicable diseases through prevention and treatment by 2030.

Longevity-promoting interventions commonly entail functional trade-offs, raising the unresolved question of whether lifespan extension necessarily compromises physiological performance. Here, utilizing a chemically defined diet (CDD) in Drosophila melanogaster, we systematically evaluated a multimodal intervention combining methionine restriction (MR), taurine supplementation (Tau), and moderate exercise. This combinatorial approach additively extended lifespan, preserved reproductive capacity,...

Aging is commonly framed as a progressive accumulation of cellular and tissue-level damage. However, the aged organism does not decline as a collection of isolated organs. Aging is communicated systemically through blood-borne signals that connect senescent cells, immune remodeling, vascular dysfunction, metabolic stress, dysbiosis, and chronic inflammation. I propose the concept of the circulating senosome to describe the composite network of age-associated circulating mediators, including...