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Category: life extension – Page 9
Scientists successfully transfer longevity gene and extend lifespan
Researchers at the University of Rochester showed that one of those biological advantages can be moved into another mammal. By transferring a gene linked to the naked mole rat’s unusually high levels of high molecular weight hyaluronic acid (HMW-HA), the team improved health and modestly extended lifespan in mice.
The work, published in Nature in 2023, suggested that at least some longevity traits that evolved in long-lived animals may be adaptable beyond the species that developed them. The genetically modified mice lived healthier lives and had an approximate 4.4 percent increase in median lifespan compared with ordinary mice.
“Our study provides a proof of principle that unique longevity mechanisms that evolved in long-lived mammalian species can be exported to improve the lifespans of other mammals,” says Vera Gorbunova, the Doris Johns Cherry Professor of biology and medicine at Rochester.
One Critical Factor Predicts Longevity Better Than Diet or Exercise, Study Finds
Diet and exercise are both factors that can influence how long you live, but they’re not the single greatest predictor of your longevity, research suggests.
According to a recent study, there’s something else that might have more of an effect in terms of curtailing your lifespan.
While poor sleep has been previously linked to a host of health issues, this latest investigation found that getting enough shut-eye had a stronger connection to living longer than diet and exercise – factors that are known to add years to your life.
Unlocking The Secrets Of Exceptional Longevity
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Cerebral Amyloid Angiopathy
Cerebral amyloid angiopathy is a major cause of hemorrhagic stroke, a frequent contributor to age-related cognitive impairment, and a key component in adverse responses to beta-amyloid (Aβ) immunotherapy. Defined by pathological deposition of Aβ in the small blood vessels of the brain, cerebral amyloid angiopathy is most often diagnosed on the basis of magnetic resonance imaging studies showing multiple hemorrhages or leptomeningeal blood products within or overlying the cerebral cortex. The disorder typically manifests as hemorrhagic stroke or as a contributing factor to cognitive decline and, less commonly, with transient focal neurologic symptoms or a cerebral inflammatory autoimmune syndrome.
How brain cells compete to shape our minds from development to aging
In a recently published review, researchers led by Prof. Wu Qingfeng at the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences explored the ongoing process of neural cell competition (NCC), a fundamental mechanism that shapes the brain across the lifespan.
The review is published in National Science Review, and provides fresh insights into how brain cells continuously “compete” for survival and how this competition impacts brain development, wiring, function, and aging.
Although neural cell competition is widely recognized for its role during early brain development, Prof. Wu’s team demonstrated that this process continues to be vital throughout life. They revealed that NCC not only helps maintain healthy brain function but also contributes to age-related cognitive decline when disrupted.
One Type of Fat May Accelerate Brain Aging, But Scientists Say There’s a Fix
A higher level of the fat that gathers around organs has been linked to faster brain aging in a new study, with glucose and insulin the likely mediators.
The study, led by a team from Ben-Gurion University of the Negev (BGU) in Israel, suggests that reducing visceral fat can protect against brain atrophy.
Like other parts of the body, the brain doesn’t necessarily age at a consistent rate: wear and tear can increase or decrease, depending on numerous factors. Faster brain aging typically means a faster decline in mental performance, and a higher risk of brain diseases.
Blood as the mirror and modulator of aging: mechanistic insights and rejuvenation strategies
Aging is a complex process influenced by changes in our blood that affect how quickly we age. Scientists have shown that blood contains important molecules and cellular components — including proteins, metabolites, and immune cells — that can either accelerate or slow aging. Tools such as the ‘proteomic aging clock’ predict age and disease risk based on blood protein profiles, whereas emerging multi-omics approaches integrate metabolomic and immunomic data. Large-scale analyses of circulating factors reveal how these components change with age and identify markers of organ-specific aging. Certain blood-borne molecules can predict diseases such as heart disease and Alzheimer disease. These findings demonstrate that aging does not occur uniformly across tissues. Overall, studying diverse blood components provides valuable insight into aging biology and offers opportunities to develop strategies that promote healthier aging and improve long-term health.
This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
The “Nanobot” Singularity: Ray Kurzweil’s Terrifying Plan for 2030
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What if immortality and god-like intelligence were just a few years away?
Renowned futurist and former Google engineer Ray Kurzweil predicts that humanity is rapidly approaching a \.