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CONCLUSION: The Korean short-form AARC is better interpreted as a subscale-based measure than as a single total score. Further validation and refinement are needed, particularly regarding selected item wording, item coverage, response category functioning, and subgroup comparability, before the scale is used for precise individual-level assessment.

When subject to damage or stress, cells develop responses in order to maintain tissue homeostasis. Two such responses are ferroptosis and cellular senescence, but how cells decide between these outcomes remains unclear. Here, we show that senescent cells increase import and membrane levels of multiple polyunsaturated fatty acids (PUFAs), but a specific intermediate PUFA, dihomo-gamma-linolenic acid (DGLA, 20:3ω-6), is reduced. Exogenous repletion of DGLA instead results in cell death by...

The major characteristics of cellular senescence are stable cell-cycle arrest, accumulation of DNA damage responses, mitochondrial dysfunction, metabolic remodeling, and the release of pro-inflammatory senescence-associated secretory phenotype (SASP) factors. Redox imbalance plays a significant role in the initiation and maintenance of senescence, and the mammalian thioredoxin system-comprising cytosolic Trx-1, mitochondrial Trx-2, thioredoxin reductases (TrxR1, TrxR2), and the inhibitor...

Chromatin stability and nuclear architectural integrity constitute the primary defense against cellular senescence. Their collapse precipitates genomic disarray, epigenetic misregulation, and functional decline in stem cells. Although TOP2A is conventionally known for resolving DNA topological stress, its role in aging remains largely unexplored. Here, we found that TOP2A expression progressively decreased in senescent mesenchymal stem cells (MSCs), and its depletion initiated a catastrophic...

Epigallocatechin gallate (EGCG), a major tea polyphenol, has been proposed to promote healthy aging, but population-level evidence and underlying mechanisms remain unclear. We analyzed 10,977 participants from the National Health and Nutrition Examination Survey (NHANES) and conducted mechanistic studies in Caenorhabditis elegans and AML12 hepatocytes. Compared with non-consumers, both lower and higher EGCG intake categories were associated with lower PhenoAge acceleration, lower all-cause...

As our young planet spun down, its bulging shape gave way to a sphere, driving the formation of continental crust

Scientists say work could help identify “castration mimetics” that boost longevity

Indian company pledges to sell injectable lenacapavir in low- and middle-income countries for only $40 a year