Aging & Longevity

BACKGROUND: Tau PET imaging has emerged as a critical biomarker for Alzheimer's disease, informing diagnosis, staging, and therapeutic selection. We investigated whether PET tracer selection alters tau detection.

Adipose tissue and skeletal muscle are metabolically active tissues that play a central role in whole-body energy homeostasis. The functionality of these tissues, and hence cardiometabolic health, relies on adequate adjustments in perfusion reflecting metabolic demands in different physiological conditions. Acute exercise increases skeletal muscle perfusion, and this response can be enhanced by prolonged exercise training. Yet, whether similar responses occur in adipose tissue remains unclear....

Transposable elements (TEs) are implicated in aging and neurodegenerative disorders, but the impact on brain TE RNA dynamics in these phenomena is not fully understood. Therefore, we quantify TE RNA changes in aging postmortem human and mouse brains and in the neurodegenerative disorders Huntington's disease (HD) and Parkinson's disease (PD). We track TE small RNAs (smRNAs) to assess the relationship to TE large RNA (laRNA) expression patterns. Human brain transcriptomes from the BrainSpan Atlas...

Pulmonary aging is characterized by progressive structural and functional decline. Neddylation is recognized as a crucial mechanism for maintaining cellular homeostasis; however, its function in pulmonary aging has not been fully elucidated. In this study, we found that the core neddylation E2 enzyme UBE2M was downregulated in aged lung tissues. Ube2m knockdown mice exhibited premature pulmonary aging, including vascular degeneration and structural disruption. Notably, in the lungs of knockout...

Natural killer/T-cell lymphoma (NKTCL) is an aggressive haematological malignancy with poor prognosis, particularly in patients with relapsed/refractory (R/R) disease. The mechanisms underlying multidrug resistance in NKTCL remain unclear and present an urgent challenge that must be addressed during clinical treatment. Multidrug-resistant NKTCL models were established using adriamycin (ADM), and cellular senescence was confirmed by markers including P16, P21, and senescence-associated...

Mitochondria are increasingly recognized as master regulators of aging, integrating bioenergetics, redox control, stem cell fate, and innate immune signaling. This review synthesizes evidence that mitochondrial dysfunction is not only a hallmark but also an upstream driver of stem cell exhaustion and inflammaging. We discuss how age-associated mitochondrial DNA (mtDNA) mutations and clonal mosaicism impair respiration and reshape metabolite availability, thereby reprogramming long-lived...

Estrogen receptor-positive breast cancer represents a significant proportion of breast cancer brain metastasis but remains understudied. Here we show that FGFR1-amplification, a well-established driver of estrogen receptor-positive breast cancer endocrine resistance, promotes estrogen receptor-positive breast cancer brain metastatic colonization in young and aged female mice, through both canonical FGF2/FGFR1 signaling and non-canonical NCAM1/FGFR1 interactions. Astrocytic FGF2-mediated...

Aging reduces cellular resilience and increases susceptibility to organ injury, notably acute kidney injury (AKI). Ischemia-reperfusion injury (IRI) influences outcomes after kidney transplantation. In animal models, short-term calorie restriction (CR) extends lifespan and protects kidneys from IRI, but translation to patients is limited due to incomplete mechanistic insight. This study examined clinical and molecular effects of short-term CR in living kidney donors. Twelve donors were...

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Cellular senescence plays key roles in tissue repair, tumour suppression and ageing. Here we identify a rapid, transcription‑independent senescence response in skin following injury. Within minutes to hours after wounding, skin cells at the edge of injury display hallmark features of senescence. This response involves the utilization of pre‑existing Cdkn1a mRNA through the removal of nuclear export inhibitors, which enables Cdkn1a transcript translation and rapid p21 protein accumulation. These...

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CONCLUSIONS: Involving older adults in digital-health studies that draw on domestic energy data must account for the broader social and economic environment. Financial strain, digital fraud, and pandemic-related mistrust all influenced disengagement. Early community involvement, co-design, and opportunities to discuss or engage directly with the technology may support more confident and informed participation in future research.

CONCLUSIONS: Co-occurrence of pain with depression or/and sleep complaints is a common and potentially modifiable contribution to poor cognition. Our findings highlight the need for targeted interventions addressing co-occurring conditions to mitigate cognitive decline among older Mexican Americans. Educational attainment modified these associations, with higher schooling attenuating baseline cognitive differences across symptom classes, consistent with a passive cognitive reserve framework, and...

CONCLUSION: Higher levels of physical activity are independently associated with better multidimensional healthy ageing and more positive perspectives on ageing among older adults with chronic conditions and functional vulnerability. These findings highlight physical activity as a key modifiable factor for promoting healthy ageing and support the integration of feasible physical activity interventions into health-care and rehabilitation services for older adults, particularly in rapidly ageing...

CONCLUSION: There is a relationship between unhealthy lifestyle, health literacy, and frailty in older adults. Health literacy may serve as an apparent protective factor against frailty. An unhealthy lifestyle could exacerbate frailty. Therefore, healthcare providers should focus on enhancing health literacy and a healthy lifestyle to prevent frailty in this population.

CONCLUSION: The findings support a psycho-social perspective on healthy aging. Aging attitudes were generally linked to better health, while digital inclusion showed mixed associations, suggesting that digital engagement can be helpful when it is meaningful and supported, but burdensome when it exceeds older adults' skills or needs. Policies and interventions should therefore go beyond expanding digital access and strengthen digital competence, age-friendly digital environments, and positive...

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CONCLUSION: Our findings suggest a significant association between a reduced number of functional teeth and low HGS in older adults. While these results highlight the potential relevance of oral health to physical capacity, further longitudinal studies are required to clarify the temporal relationship and to determine whether preserving functional dentition may be associated with better physical function and a lower risk of subsequent functional decline.

CONCLUSIONS: This study uncovers the multi-layered genetic and molecular architecture underlying ovarian aging. The identified molecular traits provide promising candidates for functional studies and suggest new avenues for developing therapies aimed at preserving ovarian function and preventing age-related decline.

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