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Gut microbial stability typically decreases with physiological aging. This decline may vary between sexes and can potentially be mitigated by adopting a healthy lifestyle. Microbial guilds, defined as functionally coherent groups of bacteria, may serve as meaningful ecological indicators of aging. This study included 2944 participants aged 51-89 years from the Shanghai Men's and Women's Health Studies. Using 16S rRNA gene sequencing and a guild-based approach, we evaluated the associations...

Tissue-resident memory T (T(RM)) cells are a specialised subset of immune cells that remain within tissues, playing a vital role in localised immune defence and long-term immunity. Unlike circulating memory T cells, T(RM) cells do not recirculate to provide rapid and effective responses against previously encountered pathogens at the tissue level. The formation of T(RM) cells is driven by tissue-specific cues, guiding their differentiation and retention within organs such as the skin, lungs and...

A surge in AI-generated text has been detected in papers across many disciplines since the release of ChatGPT

Sophisticated global networks are infiltrating journals to publish fake papers

High pulse wave velocity (PWV), a measure of increased arterial stiffness, is a risk factor for cerebrovascular disease. PWV can be estimated (ePWV) from age and blood pressure (BP). Elevated ePWV is associated with cerebral small-vessel disease, cognitive decline, and dementia risk in middle-aged and older adults. We examined data from the Midlife in the United States (MIDUS) Neuroscience Project to examine the association of ePWV with brain white matter microstructure. BP was measured in 132...

CONCLUSION: These findings highlight a critical transitional phase in kidney aging, where early senescence and oxidative stress emerge before functional decline. COX-2 may serve as a central mediator in this process, offering a potential therapeutic target for mitigating age-related renal dysfunction.

Recent developments in healthcare and scientific research have shifted the perception of ageing from a period of decline to recognising its potential for sustained functional ability, well-being, and societal contributions. In light of this perspective, a multidisciplinary panel of experts from five European countries conducted a narrative review of the literature. It convened for a one-day consensus meeting to identify key barriers, facilitators, and research priorities related to healthy...

Breast cancer risk is transiently increased in postpartum women, and this risk is prolonged in women whose first childbirth occurs after age 30. We observe elevated semaphorin 7a (SEMA7A) in tumor tissues from patients with breast cancer aged 31-39 diagnosed <10 years after childbirth. In the aged normal murine mammary gland, transforming growth factor β+ (TGF-β+) cells have increased levels of surface SEAM7A compared to the young. TGF-β1 induces SEMA7A expression in non-transformed mammary...