Aging & Longevity

In vivo growth trajectories of regional brain volumes in the Wistar rat

20 hours 19 minutes ago
Normative, longitudinal data are necessary for effective modeling of factors underlying disease processes on the brain. Large scale national and international consortium data have characterized human regional brain volume trajectories as complex and prolonged gray and white matter maturation through the third decade of life followed by progressive senescence of cortical and then subcortical gray matter. By middle age (>40 years), white matter volume is also in decline. Although rodents are the...
Qingyu Zhao

Asparaginase and Autophagy Inhibitors Effectively Remove Senescent Cells by Synergistically Limiting Asparagine Supply

20 hours 19 minutes ago
The accumulation of senescent cells (SNCs) contributes to tissue dysfunction and age-related diseases, creating an urgent need for effective senolytic strategies. We identified a metabolic vulnerability in SNCs characterized by marked downregulation of asparagine synthetase (ASNS), rendering them uniquely dependent on exogenous asparagine (Asn). This vulnerability was exploited through combined treatment with L-asparaginase (ASNase) and autophagy inhibitors, which synergistically deplete Asn via...
Zhihua Huang

Dietary Citrate Restores Age-Related Endothelial Cell Mitochondrial Dysfunction and Alleviates Atherosclerosis

20 hours 19 minutes ago
Vascular aging increases the susceptibility to cardio-cerebrovascular conditions, such as atherosclerotic diseases and hypertension, the leading causes of global disability and mortality. Dietary citrate extends the lifespan of Drosophila melanogaster and Caenorhabditis elegans as well as improves the memory of mice injured by a high-fat diet (HFD); whether it alleviates vascular aging and age-related vascular diseases; however, remains unknown. Here, we showed that dietary supplementation of...
Ya Zhao

Hematopoietic stem and progenitor cells as a reservoir for trained immunity

20 hours 19 minutes ago
Human and murine studies reveal that innate immune cells are able to mount enhanced responses to pathogens after primary inflammatory exposure. Innate immune memory has been shown to last for months to years, longer than the lifespan of most innate immune cells. Indeed, long-lived hematopoietic stem and progenitor cells (HSPCs) serve as a cellular reservoir for innate immune memory. In this review, we summarize the evidence that innate immune memory is epigenetically encoded in HSPCs, and we...
Brandon T Tran

Neurocognitive and emotional benefits of choir singing and their mediating factors across adulthood

20 hours 19 minutes ago
BACKGROUND: Our understanding on how cognitive and socioemotional well-being factors interact throughout adulthood has increased remarkably over the past decades, encouraging the use of cognitively engaging leisure activities, such as music, to promote healthy ageing. Choir singing has attracted particular interest in this regard with its established benefits on socioemotional well-being. Outside the clinical context, however, the cognitive and well-being effects induced by musical activities...
Nella Moisseinen

The association between playing Ma-jong, chess, and card games and cognitive function improvement in middle-aged and elderly Chinese: cross-sectional evidence from CHARLS

20 hours 19 minutes ago
CONCLUSIONS: PMCC activities are associated with cognitive function improvement in middle-aged and elderly adults in China. These findings suggest that engaging in PMCC activities could serve as a potential protective factor for enhancing cognitive health in this population, providing a basis for incorporating PMCC into strategies aimed at promoting cognitive well-being and healthy aging.
Yingshi Du

Modulation of fenestrated vasculature in the median eminence and area postrema in response to neurotoxin exposure and its impairment in aging

20 hours 19 minutes ago
Effective communication between the brain and peripheral tissues is crucial for homeostasis and health, and its impairment is a defining feature of aging. Circumventricular organs, characterized by the presence of fenestrated capillaries and absence of a blood-brain barrier (BBB), play a crucial role in controlling substance exchange between the brain and the blood. To date, adaptive changes in fenestrated vasculature in response to environmental insults remain poorly understood. In this study,...
Viana Q Pham

Deep Aging Clocks: AI-powered Strategies for Biological Age Estimation

1 day 20 hours ago
Several strategies have emerged lately in response to the rapid increase in the aging population to enhance health and life span and manage aging challenges. Developing such strategies is imperative and requires an assessment of biological aging. Several aging clocks have recently been developed to measure biological aging and to assess the efficacy of longevity interventions. Biological age better reflects a person's actual age and is closely associated with health outcomes and time to...
Luma Srour

ScisTree2 enables large-scale inference of cell lineage trees and genotype calling using efficient local search

1 day 20 hours ago
In a multicellular organism, cell lineages share a common evolutionary history. Knowing this history can facilitate the study of development, aging, and cancer. Cell lineage trees represent the evolutionary history of cells sampled from an organism. Recent developments in single-cell sequencing have greatly facilitated the inference of cell lineage trees. However, single-cell data are sparse and noisy, and the size of single-cell data is increasing rapidly. Accurate inference of cell lineage...
Haotian Zhang

Single-cell transcriptomic and genomic changes in the ageing human brain

1 day 20 hours ago
Over time, cells in the brain and in the body accumulate damage, which contributes to the ageing process¹. In the human brain, the prefrontal cortex undergoes age-related changes that can affect cognitive functioning later in life². Here, using single-nucleus RNA sequencing (snRNA-seq), single-cell whole-genome sequencing (scWGS) and spatial transcriptomics, we identify gene-expression and genomic changes in the human prefrontal cortex across lifespan, from infancy to centenarian. snRNA-seq...
Ailsa M Jeffries

Nutritional co-therapy with vitamin D and L-theanine reduces unpredictable mild chronic stress (UCMS) in aged mice by restoring alpha-oscillations, dopamine levels and behavioral improvement

1 day 20 hours ago
Late-life depression (LLD) arises from the confluence of neurochemical dysfunction, oxidative stress, and neural network disintegration, presenting a formidable therapeutic challenge. Here, we demonstrated that combined vitamin D (Vit D) and L-theanine (L-thea) administration exerts multimodal neurorestorative effects in an aged murine model of unpredictable chronic mild stress (UCMS), addressing the core triad of LLD pathology: dopaminergic decline, redox imbalance, and thalamocortical...
Hafiza Khushbakht Hussain

Validity of repetitions in reserve for prescribing resistance exercise in older adults

1 day 20 hours ago
We aimed to assess the validity of predicted repetitions in reserve (RIR) during resistance exercise (RE) in community-dwelling older adults (n = 25; 68 ± 4 yrs.; body mass index [BMI] = 28.1 ± 4.6 kg·m^(-2)). Prior to data collection, participants were familiarized with resistance training as well as with the use of RIR and rating of perceived exertion (RPE). Participants completed a one-repetition maximum (1RM) test in the chest press exercise. The repetitions-to-failure test, used to...
Paola Gómez-Redondo

Robust and adaptive non-parametric tests for detecting general distributional shifts in gene expression

1 day 20 hours ago
Differential expression analysis is crucial in genomics, yet most methods focus only on mean shifts. Variance shifts in gene expression-especially in cellular signaling and aging-are increasingly recognized as being biologically important. We present QRscore (quantile rank score), a general non-parametric framework that extends the Mann-Whitney test to detect both mean and variance shifts through model-informed weights derived from negative binomial (NB) and zero-inflated NB (ZINB)...
Fanding Zhou

DNA2 enables growth by restricting recombination-restarted replication

1 day 20 hours ago
Nuclease-helicase DNA2 is a multifunctional genome caretaker that is essential for cell proliferation in a range of organisms, from yeast to human^(1-4). Bi-allelic DNA2 mutations that reduce DNA2 concentrations cause a spectrum of primordial dwarfism disorders, including Seckel and Rothmund-Thomson-related syndromes^(5-7). By contrast, cancer cells frequently express high concentrations of DNA2 (refs. ^(8-11)). The mechanism that precludes cell proliferation in the absence of DNA2 and the...
Jessica J R Hudson

The aging factor EPS8 induces disease-related protein aggregation through RAC signaling hyperactivation

1 day 20 hours ago
Aging is a major risk factor for neurodegenerative diseases associated with protein aggregation, including Huntington's disease and amyotrophic lateral sclerosis (ALS). Although these diseases involve different aggregation-prone proteins, their common late onset suggests a link to converging changes resulting from aging. In this study, we found that age-associated hyperactivation of EPS8/RAC signaling in Caenorhabditis elegans promotes the pathological aggregation of Huntington's disease-related...
Seda Koyuncu

The associations between playing a musical instrument and grey matter in older adults at risk for dementia: a whole-brain VBM analysis

1 day 20 hours ago
While research suggests that playing musical instruments promotes neuroplasticity in professional musicians, it remains unclear whether lifelong music experience benefits brain health in non-professional musicians. This study examined whether playing a musical instrument across the lifespan is associated with (a) altered grey matter (GM) density and (b) neuropsychological functioning in older adults at risk for dementia. Sixty-one individuals aged ≥ 50 years were recruited from a memory clinic....
Nicole Espinosa
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