Swiss Centenarians Show Youthful Blood Protein Profiles In Aging Study

In Switzerland, 0.02% of nan organization lives beyond nan property of 100. Could location beryllium biologic characteristics associated pinch this exceptional longevity? As portion of nan "SWISS100" study, nan first large-scale Swiss investigation task dedicated to centenarians, a squad from nan University of Geneva (UNIGE) and nan University of Lausanne (UNIL) compared nan humor profiles of centenarians pinch those of octogenarians, and past pinch those of individuals aged 30 to 60. Across 37 proteins, centenarians show profiles amazingly adjacent to those of younger individuals, peculiarly pinch remarkably debased oxidative accent markers. Among nan different proteins identified, astatine slightest 3 are progressive successful nan regularisation of nan extracellular matrix (the "cement" of our body). Others could play a protective domiciled against tumor improvement aliases beryllium progressive successful lipid and glucose metabolism. These findings are published successful nan diary Aging Cell.

Led by Daniela Jopp, Professor astatine UNIL, "SWISS100" combines 4 investigation strands - sociology, psychology, medicine and biology - to unlock nan secrets of longevity. The biologic component, directed by Karl-Heinz Krause, Professor Emeritus astatine nan UNIGE Faculty of Medicine, focused specifically connected nan molecular characteristics of Swiss centenarians. His squad compared 3 groups: 39 centenarians (aged 100-105, of whom 85% were women), 59 octogenarians and 40 overmuch younger volunteers (aged 30-60). "The octogenarians let a much fine-grained study of really definite humor markers germinate complete a lifetime, and thief to separate normal aging from nan exceptional aging of centenarians," explains nan researcher.

The scientists measured 724 proteins successful humor serum, including 358 inflammatory markers and 366 cardiovascular markers - 2 areas that are captious for longevity. "Of these 724 proteins, 37 produced a genuinely singular result," highlights Flavien Delhaes, interrogator astatine nan Department of Cell Physiology and Metabolism astatine nan UNIGE Faculty of Medicine and first writer of nan study. "In our centenarians, nan profiles of these 37 proteins are person to those of nan youngest group than to those of octogenarians. This represents astir 5% of nan proteins measured, suggesting that centenarians do not wholly flight ageing, but that definite cardinal mechanisms are importantly slowed down."

The clearest results interest 5 proteins linked to oxidative stress, suspected of accelerating aging. Oxidative stress, caused by free radicals, stems chiefly from 2 sources: chronic inflammation, wherever achromatic humor cells nutrient free radicals to take sides nan body, and dysfunctional mitochondria which, for illustration poorly maintained aged cars, merchandise these molecules whose overproduction becomes harmful. "Do centenarians nutrient less free radicals, aliases do they person a much powerful antioxidant defence?" adds Karl-Heinz Krause. "The reply is very clear: centenarians person importantly little levels of antioxidant proteins than nan modular geriatric population. At first glance, this seems counterintuitive, but successful reality, it indicates that since oxidative accent levels are importantly little successful our centenarians, they person little request to nutrient antioxidant proteins to take sides against it."

Among different important findings, definite regulatory proteins of nan extracellular matrix show "youthful" look levels successful centenarians, while others could play a domiciled successful crab defence. Several proteins progressive successful fat metabolism summation sharply pinch property successful nan modular geriatric population, but acold little truthful successful centenarians. The aforesaid applies to interleukin-1 alpha, a awesome inflammatory protein, which is besides little successful nan second group.

Furthermore, nan DPP-4 protein, which degrades GLP-1 (a hormone that stimulates insulin secretion and forms nan ground of caller narcotics against glucosuria and obesity), remains good preserved successful centenarians. "By degrading GLP-1, DPP-4 helps support comparatively debased insulin levels, which could protect them against hyperinsulinism and metabolic syndrome," points retired Flavien Delhaes. "This is besides a counterintuitive mechanism, suggesting that centenarians support bully glucose equilibrium without needing to nutrient ample amounts of insulin." Longevity frankincense appears to beryllium linked to finely regulated metabolic health, wherever metabolism is optimised alternatively than intensified.

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Journal reference:

Delhaes, F., et al. (2026). Plasma Proteome Profiling of Centenarian Across Switzerland Reveals Key Youth‐Associated Proteins. Aging Cell. DOI: 10.1111/acel.70409. https://onlinelibrary.wiley.com/doi/10.1111/acel.70409