Articles tagged with Senescence
A new study published in Cell Stem Cell reveals that neural stem cells in the nervous system age rapidly, leading to a decrease in their ability to divide and replicate. The researchers found that certain genes, including Abl1, play a key role in this process, which may contribute to cognitive decline and dementia.
A 34-year climate study reveals that decreased wind speed is associated with delayed onset of annual leaf drop, extending favorable growth conditions later into autumn. The authors suggest that reduced soil drying due to decreased winds may be a key factor in this phenomenon.
Researchers at Weill Cornell Medicine found that cancer cells can dodge chemotherapy by entering a state of hibernation, or senescence, which enables them to survive aggressive treatments. This discovery has implications for developing new drug combinations that could block senescence and make chemotherapy more effective.
Researchers developed an 'aging clock' that directly measures biological age from gene expression in Caenorhabditis elegans. The new BiT age clock uses a mathematical trick to minimize gene activity variation, allowing accurate predictions of biological age and its effects.
Recent studies highlight the need to incorporate behavioral and social science alongside biological mechanisms in aging research. Behavioral and social factors are causal drivers of biological aging, with influences on healthspan and longevity being large and meaningful. Researchers emphasize the importance of including these factors i...
Researchers explore the potential of rapalogs to improve vaccine response and outcomes in biologically aged individuals. The study suggests that geroprotectors, such as rapamycin, may enhance resilience against SARS-CoV-2 infection and reduce disease severity.
A new study led by Penn State researchers found a link between the number of times a person gives birth and their physical aging process. The study discovered that people who had few or many births showed signs of quicker biological aging compared to those who had given birth three or four times. The effects were only visible after men...
Researchers at ETH Zurich identified a self-regulating mechanism that limits the productive period of trees, leading to earlier leaf fall. Global warming previously expected to delay senescence, but photosynthesis in spring and summer actually accelerates it.
Researchers found that PTSD and a variant in the klotho gene interact to cause premature aging in brain tissue, accelerating epigenetic aging. This interaction may lead to increased risk of neurodegenerative diseases like Alzheimer's.
A new study found that ultra-processed food consumption is associated with shorter telomeres, a marker of biological age. The research suggests that diet may be causing cells to age faster.
Research by American Psychological Association reveals that children who experience trauma show signs of accelerated aging, including early puberty and cellular changes. The study suggests that these adaptations may have originated as survival mechanisms but can lead to health consequences later in life.
A recent study on ginkgoes found that they can 'escape senescence at the whole-plant level,' raising questions about the apparent lack of aging in centuries-old trees. However, plant biologist Sergi Munné-Bosch argues that these organisms still undergo physiological stress associated with senescence.
A new study reveals that offspring of older mothers are less fit to survive and reproduce, affecting their health, lifespan, and fertility in humans and other species. Mathematical modeling suggests a decline in natural selection pressure with maternal age may contribute to the persistence of this phenomenon.
A new deep learning-based aging clock uses whole genome sequencing data from thousands of gut bacteria to predict human biological age. The study shows that the age of the host is a significant contributor to gut community dynamics, with microflora succession patterns associated with age progression.
Researchers developed DunedinPoAm, a blood test measuring DNA methylation marks to assess biological aging rate. Midlife adults with faster aging rates showed accelerated physical and cognitive decline.
Female marmot offspring born to older mothers exhibit greater annual and lifetime reproductive success compared to those born to younger mothers. In contrast, low-elevation environments exacerbate the decline in reproductive success of female offspring born to older mothers.
A study from Karolinska Institutet found that a combination of markers, including frailty and the epigenetic clock, can predict health risks and mortality. The researchers followed 845 middle-aged and elderly participants over 20 years, revealing associations between these markers and increased risk of early death.
Scientists have developed a proteomic atlas of senescence-associated secretomes, which can be used to identify senescent cells and their inflammatory factors. This will enable the development of simple, reliable biomarkers to assess the abundance of senescent cells in human tissues.
A new study published in Oxidative Medicine and Cellular Longevity found that drinking low-fat milk can lead to shorter telomeres, a biomarker of aging. Adults who consumed low-fat milk experienced significantly less biological aging than those who drank high-fat milk.
The MDI Biological Laboratory will use the African turquoise killifish, a vertebrate with a short lifespan of four to six months, to study aging and its relation to regeneration. This model shares symptoms of aging with humans, including loss of muscle mass and decline in immune function.
Researchers at MDI Biological Laboratory identify two major pathways governing aging in C. elegans, which when combined, amplify lifespan fivefold. This discovery could lead to the development of combination therapies to extend human healthy lifespan.
Aging adults are more likely to develop and die from cardiovascular disease due to narrowed, hardened arteries. The study reveals a novel pathway where mitochondrial dysfunction and pro-inflammatory cytokine IL-6 co-exist with aging to promote atherosclerosis.
Researchers have identified a genetic program controlling aging, which accumulates over time through stochastic physiological damage. This new understanding opens up possibilities for developing remedies to combat aging.
Researchers at LSU Health New Orleans School of Medicine have discovered a new mechanism by which elovanoids may protect brain and retinal cells against neurodegenerative diseases. The study identifies elovanoids as a potential therapeutic approach for age-related macular degeneration and Alzheimer's disease.
Researchers from SingHealth Duke-NUS Institute of Precision Medicine linked chronic sleep deprivation to increased cardiovascular disease risk markers and accelerated biological aging. Volunteers who slept less than five hours a night had shorter telomeres, which are thought to represent cellular age.
Researchers found that Parkinson's disease dopamine neurons can shut down without fully dying, releasing chemicals that cause inflammation and senescence in healthy neighbors. This discovery suggests new avenues for therapies targeting SATB1 or p21 to prevent or slow the disease.
A new series on Frailty published in The Lancet highlights the need for evidence-based interventions and robust trials to prevent and manage frailty. Despite progress in understanding frailty, gaps in knowledge remain, including a lack of consensus on its definition and assessment.
Researchers found that telomere length changes are associated with structural changes in the brain, including thickening or thinning of the cerebral cortex. This study suggests that short-term changes in telomere length may reflect general fluctuations in health and aging status, but long-term effects remain unclear.
Research suggests DNA changes can increase susceptibility to age-related diseases like heart conditions and blood cancers. A study of over 1000 older individuals found those with somatic mutations had a biological age almost four years older than those without alterations.
Scientists used an epigenetic clock to explore the molecular mechanisms of aging in humans and identified a gene, NSD1, that is closely linked to the process. This research could lead to a better understanding of how aging works and its relationship with various conditions.
Scientists have found that senescent cells stop producing nucleotides, a class of chemicals essential to keep cells young. The discovery could pave the way for new drugs to eliminate aged cells and promote healthy aging.
A corn gene identified from a 118-year-old experiment at the University of Illinois can boost yields by an average of 4.6 bushels per acre, requiring no additional fertilizer inputs. The gene, NAC7, controls senescence and stays green longer, allowing plants to continue photosynthesizing and producing grain.
Researchers identify novel genes and networks underlying senescence in maize, a complex trait affected by internal and external factors. Understanding the triggers for senescence in crops like maize can lead to altering plants that can benefit a hungry world, slowing down senescence to keep the plant green longer.
A study of almost 5000 IVF/ICSI cycles found that paternal age over 51 years significantly affects the chance of success, while miscarriage rates remain unchanged. Men are advised to not delay fatherhood due to declining natural fertility with increasing age.
Researchers found that aging contributes to a decline in intestinal stem cells, which can lead to disorders of the gastrointestinal tract. Boosting these cells with a compound called nicotinamide riboside (NR) reverses this effect and provides protection against age-related damage.
A new study from Australia found that older men with higher levels of sex hormones, particularly estradiol, have lower biological age. This association remained true even after adjusting for age, lifestyle factors, and medical conditions.
Researchers used DNA methylation to estimate biologic age and found that women with older biologic ages had higher breast cancer risks. The study suggests that biologic age may be tied to environmental exposures, potentially serving as an indicator of disease risk.
Researchers discovered that pancreatic beta cells themselves may play a role in T1 diabetes, and found that eliminating senescent cells prevents the disease in mice. The study suggests a paradigm shift for T1 diabetes therapy and opens up new avenues for treatment.
A study published in Genes & Development sheds light on the damage caused by senescence, a vital cell process that plays a key role in aging. The research reveals that manipulating tiny parts of cells can prevent certain forms of cellular damage.
Researchers have discovered a biological pathway leading to age-related cognitive decline and found clues to reverse the aging process. Disruptions in the blood-brain barrier allow proteins to leak into the brain, causing havoc and contributing to cognitive decline.
A newly discovered rDNA clock can accurately determine an individual's chronological and biological age. The study found that calorie restriction interventions accelerate or slow aging in mice, as well as in humans, making it a potentially widely applicable predictor of individual age.
A study from Gero longevity company shows that quitting smoking can lead to rejuvenation that can be monitored by a mobile phone app. The app uses AI algorithm trained on physical activity signals to estimate biological age and track its reversion after smoking cessation.
Researchers at North Carolina State University and the University of South Florida found significant flaws in forensic software DXAGE, which estimates age-at-death based on bone mineral density. The software's accuracy was off by an average of 14.25 years for women who died between 30s and 70s.
A recent paper by Insilico Medicine introduces deep learning for aging research, revealing age as a key biological feature that can be predicted using various data types. The study also outlines the potential applications of this technology, including personalized immunotherapies and vaccinations.
A new study found that breast cancer treatment correlates with accelerated biological aging and declines in cognitive function. Women who underwent breast cancer treatment several years earlier showed lower executive function scores, attention, and motor speed due to higher DNA damage and lower telomerase activity.
Researchers used big data from human medical studies and physics approaches to develop novel anti-aging therapeutics and biomarkers of aging. The strategy involves analyzing data from large biobanks and applying concepts from complex dynamic systems to predict biological age, aging rate, and potential targets for therapies.
A study published in Biological Psychiatry found that exposure to early life violence accelerates biological aging, including pubertal development, while deprivation-related adversity leads to delayed pubertal development. Children who experienced violence showed signs of accelerated epigenetic aging and increased symptoms of depression.
Researchers found that individuals with major depression have DNA methylation levels corresponding to an increased age, with a biological age on average 8 months older than healthy controls. Childhood trauma was also associated with accelerated epigenetic aging.
Researchers found that plant's daily oscillatory clock interacts with the aging linear clock during their lifetime, influencing leaf yellowing timing. The study identified key genes, such as PRR9, involved in this interaction.
Researchers have developed an AI algorithm that can accurately predict biological age and mortality risk using wearable sensor data from a large dataset. The model outperforms previous models and has the potential to refine health risks for life and health insurance programs.
A new study by USC and Yale researchers suggests that at least part of the gains in life expectancy over recent decades may be due to a change in the rate of biological aging. Biological age decreased across all age groups, with older adults experiencing the greatest declines.
Researchers at Johns Hopkins Kimmel Cancer Center found that tumor-associated epigenetic states evolve erratically during early stages of tumor development. This may help refine biomarkers for cancer risk stratification by screening specific genes in individuals of every age group.
Studies examined point-light displays of biological motion in twins, revealing individual variation tied to genetic factors; participants with higher autistic traits showed impaired local BM processing. A shared genetic basis may underlie both perception and autistic characteristics.
The American College of Physicians, along with the American Pharmacists Association and The Gerontological Society of America, has released a new resource highlighting the biological impact of aging on immunity. The guidebook emphasizes the importance of adult immunization in preventing age-related decline in immunity.
A null mutation in SERPINE1 is associated with a longer life span and improved metabolism among the Amish population. The study found that carriers of this mutation lived 10 years longer than non-carriers, with lower rates of diabetes.
Researchers discovered that chromatin fragments outside the nucleus activate a DNA-sensing pathway, leading to chronic inflammation and tissue damage. The study aims to develop small molecules targeting this inflammatory pathway to treat age-related diseases.
Researchers developed a new method to predict human biological age using carotid artery data, with a mean absolute error of 6.9 and 5.9 years for healthy individuals. The study used a combination of carotid ultrasound and tonometry data, as well as machine learning algorithms.
Researchers from Brigham Young University discovered a significant link between high physical activity and longer telomeres, which can slow down cellular aging. Adults with highly active lifestyles have telomeres that are nine years younger than those who are sedentary or moderately active.
Researchers developed an epigenetic clock to predict biological age in mice, measuring the effects of genetic and dietary factors. The tool allows for faster and larger-scale studies on aging interventions, potentially leading to new ways to extend human lifespan.
A preliminary study found that biological age is a better predictor of stroke recovery than chronological age. Researchers analyzed DNA structure changes to estimate biological age and found that it's an important factor in patient recovery after stroke.