Articles tagged with Life Span
Researchers found that activating a protein in muscle tissue increased average lifespan and prevented some age-related diseases in mice. The protein, uncoupling protein-1, converts energy from food into heat and mimics the effects of exercise.
A team of scientists has discovered that the antidepressant drug mianserin can extend the lifespan of adult roundworms, Caenorhabditis elegans, by about 30 percent. The drug may act by mimicking the effects of caloric restriction, which has been shown to retard the effects of aging in various animals.
A Buck Institute study found that lithium increases lifespan in nematode worms by reducing the activity of a gene that modulates chromosome structure. The research highlights the potential for using C. elegans as a model organism to study drug toxicity and genetic impacts of compounds.
Scientists at UCSF have identified naturally occurring processes that allow multiple genes to slow aging and protect against cancer in the C. elegans roundworm. The study suggests that cellular changes leading to longevity antagonize tumor cell growth and highlights a deep evolutionary connection between lifespan and cancer.
Researchers found that a decrease in p53 activity in only 14 insulin-producing cells in the fly brain can significantly extend lifespan, supporting the link between metabolic regulation and aging. The findings also suggest a connection between aging and diabetes, providing a new laboratory model for studying these diseases.
Researchers show that traditional mating patterns make men essential to understanding the 'wall of death,' a puzzle in human lifespan. Men's reproductive patterns differ from women's, with earlier and more gradual decline after female menopause.
Researchers found that aging flies accumulate significant amounts of bacteria both inside and out, yet this does not affect their longevity. The study suggests that the energy spent fighting bacteria is not at the expense of overall health.
A study by University of Southern California researchers found that bacteria-free fruit flies lived as long as their bacterial counterparts, challenging conventional wisdom about the impact of microbes on lifespan. The finding suggests that factors other than bacterial load may limit life span.
A study published in Science found that maintaining a healthy lifestyle through diet and exercise can extend lifespan by reducing insulin-like signaling in the brain. The researchers discovered that mice with reduced insulin receptor substrates lived 18% longer, while also showing improved metabolic health.
A study published in Aging Cell found that male mice fed a normal diet and NDGA showed significantly longer survival than control mice. However, no significant difference was observed in female mice. The researchers are now conducting further studies to confirm the results and determine the potential of NDGA as an anti-aging agent.
Researchers at Dartmouth Medical School have discovered a vitamin that extends lifespan in yeast by activating an anti-aging gene product. The study found that providing this newly discovered vitamin, NR, activates Sir2, which resembles sirtuins found in humans and is involved in longevity and energy expenditure.
Researchers at Research Australia have made a major breakthrough in understanding how platelet life span is controlled. By regulating apoptosis, two specialized molecules can extend or shorten platelet lifespan, opening up new possibilities for improving patient care and managing diseases such as cancer and blood clots.
A recent study found that caloric restriction can reduce oxidative damage in muscle cells and improve mitochondrial function. The researchers discovered that limiting calorie intake without malnutrition can slow aging and delay the onset of age-related diseases.
A new model proposes that sexual differentiation may exact a high biological cost, reducing function of mitochondria and influencing longevity. The model predicts which genes regulate life span and suggests testable hypotheses for exploring the biggest question in aging research.
Fruit flies exposed to yeast paste odor did not live as long as calorie-restricted insects without the odor, suggesting that reduced perception plays a role in extending lifespan. The study found that flies with impaired sense of smell lived up to 57% longer and were more stress-resistant.
Researchers discovered that exposure to food odors in fruit flies can reduce their lifespan and partially reverse the effects of dietary restriction. The study suggests that our sense of smell may play a role in human longevity.
Researchers at Scripps Research Institute discovered that lowering core body temperature extends lifespan in mice, independent of calorie restriction. The study found a significant increase in median lifespan, with females living up to 20% longer and males by 12%.
Researchers used resveratrol to increase the lifespan of obese mice, reversing nearly all changes in gene expression patterns linked to diabetes and heart disease. The study also found improved motor skills and quality of life in mice treated with resveratrol, suggesting potential therapeutic applications for age-related diseases.
Researchers found that naked mole-rats have higher levels of oxidative stress and damage than mice, contradicting the oxidative stress theory of aging. The study suggests that the mole-rat's longevity may stem from its ability to defend against acute bouts of oxidative stress.
Sirtuins have been implicated in the health benefits of calorie restriction, which is known to lengthen life span. The discovery reveals that sirtuins directly control specific metabolic enzymes called AceCSs, transforming them into a form that allows the body to utilize acetate as an energy source.
Researchers at the University of Rochester Medical Center have made a groundbreaking discovery about the relationship between stress response and insulin regulation in flies. By boosting a molecular signal called JNK, they found that flies can live up to 85 days longer, opening up new avenues for understanding human diabetes and aging.
Scientists from the University of Florida's Institute on Aging found that reducing calories by 8% and exercising moderately extended lifespan and improved liver function in rats. This discovery suggests that even slight calorie moderation can have significant effects on health, with potential implications for human aging.
A recent study found that calorie-restricted diets can lower fasting insulin levels, body temperature, and oxidative damage to DNA in humans. After six months on a low-calorie diet, participants showed improvements in heart function compared to those who didn't restrict calories.
A new study found that breeding Zambian mole-rats lived up to 20 years and twice as long as non-breeding individuals. The researchers suggest this could be due to the species' eusocial lifestyle and pair-bonding habits, making it a valuable model organism for studying aging mechanisms.
A longer-lived population could be a blessing for European countries with low fertility rates, but a curse for others. Anti-aging technologies may exacerbate existing inequalities, particularly in access to healthcare and distribution of resources.
Researchers used a short-lived fish species to test the effects of resveratrol on aging-related physiological decay. The compound was found to increase longevity and delay the onset of memory and muscular performance decays.
Researchers found that guppies from high-predation environments reproduce earlier and live longer due to a selective increase in reproductive lifespan. The study supports the hypothesis that natural selection influences only specific segments of an organism's lifespan.
A new study confirms that evolution selectively influences life history traits affecting fitness, such as age at reproduction and senescence. Guppy populations show no postreproductive lifespan variation, contrary to expectations, suggesting this aspect of life history may be randomly determined.
Researchers found that deleting or over-expressing the lin-4 microRNA in C. elegans worm resulted in a shorter or longer lifespan, respectively. This study suggests an intrinsic biological clock regulates both organ development and aging.
Researchers at Brown University have discovered that reducing p53 protein activity in neurons can increase lifespan in fruit flies by 58%, a finding that suggests a potential mechanism for slowing aging through the caloric restriction pathway.
Researchers discovered that disrupting p53 activity in neurons extends lifespan and increases stress resistance in adult fruit flies. The study suggests that targeting p53 activity in different cell types may offer a way to prevent tumors while preserving healthy aging.
Scientists have identified two key signaling proteins, Tor1 and Sch9, that are linked to both nutrient uptake and the aging process in humans. By studying these proteins in yeast cells, researchers hope to understand how caloric restriction affects lifespan and develop new strategies for targeting age-related diseases.
Researchers found that reducing clk-1/mclk1 activity promotes longevity in mice, similar to the effect seen in C. elegans. The study also discovered that mclk null cells have a growth advantage due to resistance to oxidative stress.
Researchers identified two life-extending genes, Hst2 and Hst1, that account for the beneficial effects of caloric restriction on yeast. The genes are involved in reducing toxic circular DNA molecules, which accumulate with age and contribute to aging.
Researchers found that high-dose vitamin E supplementation improved rat lifespan, cognitive function, and neuromuscular performance. The results show a significant correlation between vitamin E levels and mitochondrial function, supporting the free radical theory of aging.
Caloric restriction is unlikely to lead to a dramatic increase in human lifespan, according to UCLA researcher John Phelan. By restricting calories by up to 60%, mice live longer than those with unlimited access to food, but humans will not experience the same benefits.
Researchers at Salk Institute demonstrate that telomere length does not dictate aging and lifespan, contradicting previous assumptions. They found that non-dividing cells, such as nerve cells, play a crucial role in aging, and targeting telomeres alone is insufficient to prevent accelerated aging.
Researchers used a fluorescent marker to predict individual life spans of genetically engineered nematodes, revealing up to four-fold variation in lifespan based on stress levels. The study suggests chance metabolic processes dictate aging rates in genetically identical organisms raised in similar environments.
The study reveals key connections between metabolic disease pathways and aging, identifying genes and mechanisms that can be targeted for drug discovery. Targeting these pathways may uncover novel therapeutic targets and drugs to treat metabolic diseases and potentially impact the progression of aging.
Researchers at PNNL have developed more efficient CFL replacement lamps, while redesigning hard-wired fixtures to use these lamps. This could lead to significant energy savings in U.S. homes with recessed downlights.
Researchers found that reducing yeast in flies' diet increased life span by over 60%, suggesting protein or fat plays a greater role in longevity than sugar. The study's findings challenge the conventional wisdom that eating less promotes longevity and provide insight into the effects of different nutrients on life span.
Scientists have extended the lifespan of mice by protecting against free radicals, providing evidence for the free-radical theory of aging. The study found that delivering catalase to mitochondria increased average and maximum lifespan by up to 20%.
A six-week cycling study found that regular exercise activates hundreds of genes in young, healthy men, some linked to diabetes and cardiovascular disease. The study also showed that individuals who improved their performance most activated more genes in the muscles, a phenomenon not previously seen.
Researchers discovered a new species of coral-reef pygmy goby that lives for just 59 days, with daily mortality rates as high as 8%. The tiny fish lays only three clutches of eggs in its lifetime, contributing to the complex and hectic life cycle of reef fish.
Researchers discovered that inserting human UCP2 into fly nerve cells extended lifespan by 28% in females and 11% in males. The increased mitochondrial uncoupling led to reduced ROS production and oxidative damage, without affecting reproductive or physical activity levels.
Scientists found that animals with extra copies of the AMP-1 enzyme lived 13% longer than controls, while environmental stressors activating AMP-1 also led to longer lives. The study's findings have broad implications for understanding human aging and potentially extending lifespan through exercise and therapeutics.
Researchers at the Medical College of Georgia have identified a gene called Indy that plays a critical role in delivering energy to cells, which may contribute to aging. By altering the activity level of this gene, they found that tiny worms lived longer and were thinner, raising hopes for potential human benefits.
A new study on fruit flies found that reducing insulin/insulin-like growth factor (IIS) signalling pathway in fat tissue extends life by up to 50%. The system, which governs longevity, is likely to be conserved in humans. Increasing dFOXO levels in fat cells also extended lifespan and reduced fertility.
Researchers discovered that mice with the highest metabolic rate lived 36% longer than those with lower rates, potentially adding an extra 27 years to human lifespan. The most metabolically active mice contained factors that made their metabolism less efficient but reduced toxic by-products called oxygen free radicals.
A recent study has discovered how calorie restriction activates a specific gene called SIR2, leading to increased longevity in yeast and potentially other organisms. The researchers found that a decrease in the levels of NADH allows NAD to better activate Sir2, resulting in extended life span.
A recent study by North Carolina State University researchers found that a gene variant in the Dopa decarboxylase enzyme is associated with variation in fruit fly lifespan. The study's results suggest that this genetic variation may also play a role in human longevity, with potential implications for pharmacological interventions to im...
Researchers discovered that a single life-extending mutation affects multiple genes, including those controlling cellular stress response and metabolic processes. The study reveals the intricate connections between genetic pathways and their impact on lifespan.
The PNC1 protein regulates nicotinamide, a form of vitamin B3, which acts as an inhibitor of Sir2, a founding member of proteins controlling cell survival and lifespan. This discovery suggests that lifespan is controlled by an active genetic program in cells, potentially boostable.
A new drug combination has been shown to delay disease progression and increase the longevity of mice with amyotrophic lateral sclerosis (ALS). The therapy, which combines minocycline, riluzole, and nimodipine, reduced muscle strength loss and nerve cell degeneration in ALS-mice.
A computer model has been developed to calculate how concrete responds to salt and moisture exposure, allowing for the simulation of various factors that affect its durability. The model can be used for both designing new concrete structures and analyzing existing ones, enabling more accurate predictions of their lifespan.
Researchers have discovered six fly populations that live up to 12% longer than normal due to overexpression of specific genes involved in fundamental cellular processes, sparking hopes for similar effects in humans.
The study found that median survival times for Alzheimer's patients vary significantly depending on the age at diagnosis, ranging from nearly 9 years for those diagnosed at 65 to approximately 3 years for those diagnosed at 90. Additionally, researchers reported an average time of 2.8 years between symptom onset and diagnosis.
Researchers found that naked mole-rats, living up to 20 years in the wild, outlive other similar-sized rodents by a factor of 10 due to reduced extrinsic mortality. Their remarkable longevity is linked to their subterranean lifestyle and cooperative defense against predators.
Research published in PNAS found that caloric restriction can confer significant health benefits for the heart and extend its working life by exerting influence on the genetic program governing heart cells. In middle-aged mice, cutting calories prevented age-related genetic changes that damage heart cells and promote inflammation.
Researchers at UCSF used a new technique to decouple hormone pathways controlling reproduction and longevity in worms, finding that daf-2 activity can be turned on or off independently. This allows for the potential extension of lifespan without suppressing reproduction, offering a promising avenue for human aging research.