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Long-lived bats appear to combine powerful immune defenses with unusual strategies for eliminating damaged cells, potentially helping them avoid cancer and disease for decades. Researchers hope these genetic tricks could eventually reveal new ways to protect human health during aging.

Geologist and officials were acquitted last week, but scientists fear future liability for failing to predict similar disasters

Nighttime light exposure was linked to thicker, stiffer heart chambers and early signs of reduced heart function in a study of more than 11,000 people. The findings suggest that keeping bedrooms darker could be an overlooked strategy for protecting the heart.

A major Ontario study found 24 common medication chains in which one drug’s side effects can be mistaken for a new medical problem, leading to another prescription. Researchers say closer medication reviews, pharmacist involvement, and automated alerts could help prevent these potentially harmful prescribing cascades.

Researchers analyzing data from more than 1.9 million people found that ADHD is associated with substantially higher rates of digestive problems. People with ADHD had nearly double the odds of constipation, 58% higher odds of irritable bowel syndrome, and more than four times the odds of encopresis.

An evolutionary trade-off may have helped a mutation linked to auto-immune disease persist in human populations

Cellular senescence is a key driver of age-related pathologies. Our study focuses on PTCHD4, a transmembrane protein with previously undefined physiological functions in aging processes. We found that PTCHD4 expression was increased across multiple cellular senescence models and showed an age-associated increase in mouse tissues and human lung transcriptomic datasets. Functionally, PTCHD4 deficiency attenuated senescence progression, whereas its overexpression promoted this process. In vivo,...

As societies age, a deeper understanding of ageing-related factors that contribute to longevity is needed. We therefore investigated possible longevity factors (social, medical, and biological) in relation to parental longevity (PL) and polygenic longevity scores (PGLSs). We examined 1126 70-year-olds from the Swedish population-based Gothenburg H70 Birth Cohort study in 2014-2016 (response rate 72%), with follow-up in 2019-2022 (response rate 77.6%). Comprehensive examinations included...

Long-term humoral immunity relies on long-lived plasma cells in the bone marrow (BM). However, the processes governing plasma cell transport, positioning, and longevity within the BM niche remain poorly understood, especially in humans. Most existing knowledge comes from mouse studies or limited human-based models, which makes translating findings to human biology challenging. Here, we introduce a physiologically relevant human bone marrow-on-a-chip (hBMOC) model to investigate the behavior and...

Ovarian aging leads to permanent reproductive senescence and systemic hormonal changes that predispose women to age-associated comorbidities. Despite these observations, the intrinsic mechanisms driving age-related ovarian decline are poorly defined. Mitochondrial DNA (mtDNA) mutations and instability are strongly associated with aging; however, it remains unknown if naturally occurring mitochondrial genetic variation influences the trajectory of ovarian aging. To address this, we compared two...

Ultraviolet (UV)-induced skin photoaging is driven by cellular senescence and chronic inflammation. Although the secretome (SCT) derived from human umbilical cord mesenchymal stem cells (hUC-MSC SCT) exhibits regenerative potential, its role in combating photoaging remains to be elucidated. In this study, we show that SCT markedly ameliorates photoaging in UV-exposed mice, restoring epidermal barrier function, dermal collagen integrity, senescence-associated markers, and systemic inflammatory...

One-fifth of data sets intended to support replication breached privacy standards, study finds