HOME >> BIOLOGY >> NEWS
Longevity genes

Genes that help one creature live longer could hasten the death of another. A new study shows that genetic variations that confer longevity in some fruit flies often turn out to have adverse effects on flies of the opposite sex or those in a different environment.

Researchers have found mutant forms of genes in flies and worms that lengthen the animals' lifespans, and hope to identify similar life-extending genes in people. But whether certain genes can consistently lengthen lives is a matter of debate. Studies in several organisms have shown that gender and environment affect thebehaviour of genes.

In an attempt to gauge the extent of these effects, Trudy Mackay at North Carolina State University in Raleigh and her colleagues recorded the lifespans of inbred male and female flies raised on different diets at different temperatures. Using genetic mapping techniques, they then searched for genetic variations that correlated with long lifespans.

Each of the 17 variations that Mackay's team found increased longevity only in certain environments, or in a sex-dependent manner, or both. Ten variations that made flies live longer under some conditions made flies die sooner under others. One variation, for example, made females live longer if they experienced a hot spell early in life but die sooner if they lived at constant room temperature, with no effect on males.

"What's really exciting about the study is its relevance to the evolution of ageing," says John Tower, an expert on fruit fly ageing at the University of Southern California. It highlights the fact that mutations that decrease lifespan in some situations are nonetheless selected during evolution because they prove beneficial under other circumstances.

James Curtsinger at the University of Minnesota in St Paul recently performed similar studies, however, and found that environment or gender had virtually no effect on longevity-associated genetic variations. Although he describes the Macka
'"/>

Contact: Claire Bowles
claire.bowles@rbi.co.uk
44-0-207-331-2751
New Scientist
25-Jan-2000


Page: 1 2

Related biology news :

1. New Insights Into The Enigma Of Lengthening Longevity
2. Malnutrition Impacts Longevity Of Females More Than Males And Shows Gender Differences In Fruit Flies
3. Belgian researchers explore revolutionary approach to angiogenesis
4. Tracing genes, biologists show lizard migration is traced to Florida
5. Certain genes boost fish oils protection against breast cancer
6. Fossil genes reveal how life sheds form and function
7. Missing genes may help explain why plague bacteria are so deadly
8. Do genes respond to global warming?
9. Genetic map of important tree genes outlined
10. Mitochondrial genes cause nuclear mischief
11. Identifying tick genes could halt disease, bioterrorism threat

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:3/30/2017)... March 30, 2017 The research team of ... three-dimensional (3D) fingerprint identification by adopting ground breaking 3D fingerprint minutiae ... realm of speed and accuracy for use in identification, crime investigation, ... cost. ... A research ...
(Date:3/27/2017)... ROCKVILLE CENTRE, N.Y. , March 27, 2017 ... by Healthcare Information and Management Systems Society (HIMSS) ... Analytics Outpatient EMR Adoption Model sm . In ... top 12% of U.S. hospitals using an electronic ... recognized CHS for its high level of EMR ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... SAN DIEGO, CALIF. (PRWEB) , ... October 10, 2017 , ... ... website as part of its corporate rebranding initiative announced today. The bold new ... broaden its reach, as the company moves into a significant growth period. , It ...
(Date:10/10/2017)... 2017 SomaGenics announced the receipt of a ... RealSeq®-SC (Single Cell), expected to be the first commercially ... microRNAs) from single cells using NGS methods. The NIH,s ... accelerate development of approaches to analyze the heterogeneity of ... techniques for measuring levels of mRNAs in individual cells ...
(Date:10/9/2017)... Charlotte, N.C. (PRWEB) , ... October 09, 2017 , ... ... Purple announced Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and ... Dr. Stubbs was a member of the winning team for the 2015 Breakthrough Prize ...
(Date:10/7/2017)... 6, 2017  The 2017 Nobel Prize in ... Jacques Dubochet, Joachim Frank and ... cryo-electron microscopy (cryo-EM) have helped to broaden ... biology community. The winners worked with systems manufactured ... produce highly resolved, three-dimensional images of protein structures ...
Breaking Biology Technology:
Cached News: