Aging & Longevity

CONCLUSIONS: Maintaining favorable long-term patterns of PA, even with gradual decline, is associated with reduced odds of DS among older adults with chronic diseases. These findings support PA as a potentially cost-effective strategy for secondary prevention and highlight the importance of sustained behavioral patterns in mitigating mental health risks in aging populations.

CONCLUSION: Frailty is common among Iranian older adults and is independently associated with poorer physical QoL and, to a lesser extent, mental QoL. These findings support the need for targeted screening and multidomain interventions.

Neurons and glia work together to dynamically regulate neural circuit assembly and maintenance. In this study, we show that Drosophila exhibit large-scale synapse formation and elimination as part of normal CNS circuit maturation and that glia use conserved molecules to regulate these processes. Using a high-throughput ELISA-based in vivo screening assay, we identify new glial genes that regulate synapse numbers in Drosophila in vivo, including the scavenger receptor ortholog Croquemort (Crq)....

Osteoporosis, a common metabolic bone disorder linked to aging, is often accompanied by muscle degeneration. Muscle Bmal1 disruption in mice has been shown to affect various tissues, including the kidney, lung, and bone, indicating that the muscle molecular clock may influence the physiological homeostasis of multiple organs through systemic circulation. Despite this, the role of the muscle clock in age-related osteoporosis remains unclear. In aged mice, we observed a disruption in the circadian...

Lead exposure remains a significant public health problem, and even within current standards, most individuals have limited means to avoid it. Regulating or removing toxic exposures remains a priority, but complementary nearer-term protections are needed. We previously observed that health insurance coverage attenuated associations of blood lead levels with two DNA methylation-based biomarkers of morbidity and mortality: GrimAge2 and DunedinPoAm. In this study, we evaluated whether healthcare...

Exposure to low levels of environmental challenges, known as hormetic stress, fosters subsequent stress resistance and promotes healthy aging in later life. However, specific mechanisms governing transcriptional reprogramming upon hormetic nutrient stress remain elusive. Here, we identify histone H3 lysine 27 acetylation (H3K27ac) as a crucial driver of transcriptomic adaptation to hormetic fasting. Beyond its immediate function of enhancing lipid catabolism for alternative energy sources,...

CONCLUSION: The updated Brazilian Portuguese version of the CFS demonstrates excellent reproducibility and strong convergent validity in hospitalized older adults. These results support its use as a reliable clinical and research tool for frailty assessment in hospitalized older adults, within the scope of the measurement properties evaluated.

Brain aging is increasingly recognized as a heterogeneous and systems-level process involving dynamic interactions among neuronal, glial, vascular, and immune-associated cell populations. Recent advances in single-cell and spatial omics technologies have revealed diverse cellular aging trajectories, region-specific vulnerabilities, and extensive remodeling of intercellular communication networks across the aging brain. These findings challenge reductionist views of aging and emphasize the...

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The aging bone marrow microenvironment is characterized by chronic low-grade inflammation ("inflammaging"), which disrupts skeletal homeostasis and impairs bone regeneration. However, the stromal-immune crosstalk mechanisms sustaining this pathological state remain poorly defined. Here, transcriptomic analysis identified thrombospondin-1 (Thbs1) as a key upregulated component of the senescence-associated secretory phenotype (SASP) in aged bone mesenchymal stromal cells (BMSCs). We demonstrate...

Kaempferol (KMP) is a dietary compound found in a wide range of foods. The therapeutic capabilities of these foods are associated with the phenolic compounds present in their structures, particularly their antioxidant activity. Remarkable medical care areas linked to KMP include pain relief, anti-aging, antiallergic, anticancer, antidiabetic, anti-inflammatory, antioxidant, antipyretic, central nervous system regulation, wound healing, and hepatoprotective characteristics. KMP has attracted...

Age-related decline in speech perception is a prominent challenge in auditory aging, especially under noise conditions. However, how neural and neurovascular processes are jointly organized and coordinated across adulthood during speech perception remains incompletely characterized. This study employed simultaneous electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) to investigate neural activation, functional connectivity, and neurovascular coupling across youth (n =...

A critical developmental process affecting aging and age-associated disease, cell senescence is characterized by persistent growth arrest and adaptive gene expression patterns. A common RNA modification, N6-methyladenosine (m⁶A), regulates gene expression profiles but its impact on senescence has not been studied globally. Here, we elucidated the m⁶A landscape in proliferating and senescent human fibroblasts using epitranscriptomic microarray and m⁶A-crosslinking and immunoprecipitation followed...

Graphic depiction of the narrative creation and student attitude changes.

Cellular calcium (Ca^(2+))-regulating systems are compromised during aging-related disorders. Here, we show that disruption of Ca^(2+) homeostasis leads to the cytoplasmic accumulation of Ca^(2+) binding protein S100A6, which promotes Hutchinson-Gilford progeria syndrome (HGPS) and natural aging. S100A6 recruits CacyBP to facilitate the ubiquitination and degradation of PARP1, leading to DNA damage and the formation of cytoplasmic chromatin fragments (CCF), activing cGAS-STING-NF-κB pathway and...

Parkinson's disease (PD) is a neurodegenerative disease affecting the central nervous system with effects on the skeletal muscle that entails detailed characterization. Several PD-associated motor symptoms, such as rigidity, movement delays and postural instability, involve the skeletal muscle. We used the human α-syn A53T mutant mouse model to characterize the PD-associated skeletal muscle abnormalities. These mice exhibit reduced muscle weight, myofiber size and grip strength at PD onset. Gain...

This study aims to investigate the mechanism by which extract of Dendrobium officinale leaves (EDL) extends the lifespan of Caenorhabditis elegans. Untargeted metabolomics and network pharmacology analyses revealed that EDL primarily contains active components such as fatty acids, flavonoids, and polyphenols, which are predicted to potentially modulate pathways including MAPK, AMPK, mTOR, and longevity-related signaling pathways. Experimental results showed that 2 mg/mL EDL significantly...

The ageing population and the increasing prevalence of age-related diseases underscore the urgent need for targeted therapeutic strategies. Accumulating evidence indicates that quinolinic acid (QA), a neuroinflammatory neurotoxin, contributes to the pathogenesis of neurodegenerative disorders. In this study, using Caenorhabditis elegans as a model organism, we demonstrate that chronic QA exposure acts as a robust driver of accelerated aging, significantly reducing overall healthspan. This...

Higher cardiorespiratory fitness (CRF) has been linked to healthier brain ageing, which includes preservation of white matter (WM) tracts. However, whether CRF might help preserve whole-brain WM networks and whether this varies with age remains unclear. To address this gap, we used cross-sectional data from The Maastricht Study (N = 4432, mean age 59.2 ± 8.7 years, range 40-79, 51% female). We derived CRF estimates from submaximal ergometry (VO(2)-max) and WM network metrics (whole-brain node...

The properties of functional brain networks are an important determinant of cognitive function in aging and dementia. Despite this, few studies have comprehensively examined demographic and biopsychosocial predictors of functional brain networks, and none have attempted to do so across the adult lifespan while accounting for collinearity among these predictors. The current study used data from 525 individuals between the ages of 35 and 100 years from the Human Connectome Project 2.0 Lifespan...