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Senescent BMSC-Derived Thbs1 Drives Inflammaging and Impairs Bone Regeneration by Suppressing PINK1/Parkin-Mediated Mitophagy in Macrophages

1 month 2 weeks ago
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...
Yifeng Xing

Kaempferol as an ovarian aging-modulatory flavonol

1 month 2 weeks ago
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...
Hamid Reza Nejabati

Neurovascular decoupling and compensatory network recruitment during speech perception in aging: evidence from EEG-fNIRS

1 month 2 weeks ago
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 =...
Liu Yang

Characterization of the m(6)A Epitranscriptome in Fibroblast Senescence

1 month 2 weeks ago
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...
Kotb Abdelmohsen

Dementia risk linked to nitrate in drinking water, study finds

1 month 2 weeks ago
A major long-term study of more than 54,000 adults found that where nitrate comes from may matter far more than how much you consume. People who got more nitrate from vegetables—roughly the amount in a cup of baby spinach a day—had a lower risk of developing dementia, while higher nitrate and nitrite intake from red meat, processed meat, and even drinking water was linked to a greater risk.