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Tag: "longevity" at biology news

The secret to longevity in tubeworms

...survival increases to over 250 years, matching the longevity of actual living tubeworms. To date, the proposed return of sulfate to the sediments through the roots is only a hypothesis--albeit one with much to support it--that still awaits direct confirmation. By providing a model in which this hypothetical i...

Research on Worms Yields Clues on Aging

...aling inside the body,which then in turn regulates longevity in the worms," Kornfeld says.Testing the anticonvulsants on longer-lived mutant worms, theresearchers found the drugs further extended their lives, although notto the same degree they extended the lives of worms with no mutations.That indicates the a...

Sexual cooperation: Mating increases longevity in ant queens

...ating. It remains unknown how mating increases the longevity of the females. Sexual cooperation, rather than sexual conflict, is promoted by the life history of social insects; whereas most insect females undergo repeated phases of mating and reproduction throughout their lifetime, ant queens in social specie...

US life expectancy about to decline, researchers say

...re -- perhaps enough to offset any improvements in longevity from anticipated advances in biomedical technology. Researchers also believe the life-shortening effect of obesity could rise so rapidly in the United States -- from two to five years in the next 50 years -- that it may eventually exceed the current...

Signs of aging: Scientists evaluate genes associated with longevity

...e adults contributes substantially to the observed longevity of daf-2," says Dr. Julius Halaschek-Wiener, a researcher at the BC Cancer Agency's Genome Sciences Centre and first author on the study. Another notable observation was that stress-response factors such as hsp, mtl-1, gst-1, and sip-1 were more abu...

Innovative coating could give medical implants a longer life

...breathe life into medical implants. Currently the longevity of certain medical implants suffers because bacter...marine environment. Looking for a solution to the longevity problem in existing coatings, Messersmith teamed up with Annelise Barron, associate professor of che...

Caloric restriction won't dramatically extend life span in humans: UCLA research

..., "Why dietary restriction substantially increases longevity in animal models but won't in humans," published i...he 7 percent. "The trade-off between calories and longevity appears to be close to a linear relationship, but the slope isn't very steep," said Phelan, whose mo...

How monarch butterflies are wired for navigation

...lating the insects' hormonal system, to induce the longevity that enables the butterfly to extend its survival in its overwintering grounds in Mexico. The researchers include Ivo Sauman of the Czech Academy of Sciences; Adriana D. Briscoe of the University of California, Irvine; Haisun Zhu, Dingding Shi, Quan...

Researchers identify new genes that regulate aging

Researchers have identified 23 new longevity genes by screening the genome of Caenorhabditis elegans, a small worm that is used as a model organism in genetics studies. The findings are reported in the inaugural issue of PLoS Genetics. Each of the 23 genes somehow normally acts to reduce longe...

Fluorescing lab worms signal longer life spans

...t been done before, and has implications for human longevity and health." A paper on the subject by co-first a...e to heat. "The ability to predict differences in longevity of this magnitude have never before been reported, especially given that the predictions are made on...

No small feat: First ever gene therapy success for muscular dystrophy achieved

...approach that improved both the general health and longevity in mice with congenital muscular dystrophy," said Dr. Xiao. The most common form of CMD, and also one of the most severe, is due to a genetic mutation of laminin alpha-2, a protein that is essential for maintaining the structures that surround muscl...

New technique multiplies life span in simple organisms

...rs that an extra copy of the SIR2 gene can promote longevity in yeast, worms and fruit flies. That finding was covered widely and incorporated into anti-aging drug development programs at several biotechnology companies. Now, molecular geneticists at the University of Southern California suggest that SIR2 in...

Human trial proves ricin vaccine safe, induces neutralizing antibodies; further tests planned

...127 days after the last vaccine injection, but the longevity of the antibodies in a given volunteer was not related to the dose level of the vaccine he or she received. Dr. Vitetta and her colleagues are now conducting studies on mice that combine the vaccine with an adjuvant, a formulation that may lengthen t...

Cure for cancer worth $50 trillion

... Murphy and Topel show that the value of increased longevity far exceeds rising medical expenditures overall. Gains in life expectancy over the last century were worth about $1.2 million per person to the current population, with the largest gains at birth and young age. "An analysis of the value of health im...

UF researchers develop ways to keep the bloom on the rose

...pping flowers by air to retailers, the quality and longevity declined for the consumer. "With Terril's research, people today are receiving flowers of a better quality that last longer than when roses were grown and sold in the same location," Kremp said. The beauty and ephemeral nature of Valentine's Day fl...

For the first time: Longevity modulated without disrupting life-sustaining function

...ene. "Smk-1 is the first known gene that regulates longevity without affecting other vital functions of the ins...e genetic and metabolic requirements for extending longevity without causing diverse, wide-ranging effects on the development and maintenance of the physiologica...

Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate

... fish food and found that this treatment increased longevity and also retarded the onset of aging-related decays in memory and muscular performance. Resveratrol appears to be the first molecule to consistently cause life extension across very different animal groups such as worms, insects, and fish, and it c...

Chimpanzees can transmit cultural behavior to multiple 'generations'

...himpanzees learn from each other and the potential longevity of their culture. In doing so, they confirmed that a particular behavior can be transmitted accurately along a chain of up to six chimpanzees, representing six simulated generations equaling approximately 90 years of culture in the wild. A comparativ...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

..., experiments will be performed to determine their longevity when exposed to the extreme stresses of the radiat...harmacy notes that the encapsulated cells' unusual longevity may serve as a model for persistent infections such as tuberculosis, which has a long latency period...

Brain-computer link lets paralyzed patients convert thoughts into actions

...reat deal of work remains to be done to extend the longevity and reliability of the sensor. Patient two never developed as much control as Nagle, and even Nagle's level of control, the authors note, "is considerably less than that of an able-bodied person using a manually controlled computer cursor." Despite...

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