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:
TAG: Longevity genes

(Date:3/31/2015)... YORK , March 31, 2015  Elephant Talk ... "Company"), a global provider of Software Defined Network Architecture ... today announced total revenue of approximately $20.4 million for ... a restated $19.5 million for the year ended December ... calendar 2014, the Company had completed its multi-year transition ...
(Date:3/26/2015)... TORONTO , March 26, 2015 ... premier family, social, recreation and athletic club, today announced ... designed to allow freedom of movement for members and ... "Following a comprehensive process, we selected FST,s IMID ... sophistication and convenience for our members and staff, in ...
(Date:3/24/2015)...   NexID Biometrics LLC, whose spoof-mitigation technology ... announced the beginning of shipments of version 2.0 of ... company, based in Potsdam, N.Y. , ... which began here today at the Walter E. Washington ... its SDK boosts the accuracy rate range to 96.5 ...
Breaking Biology News(10 mins):Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
(Date:4/23/2015)... Proove Biosciences , a commercial ... to announce the launch of Proove Non-Opioid ... 62 genetic variations to predict good versus poor ... non-opioid pain medications, namely ibuprofen (brand name Advil, ... Xanax) and acetaminophen (brand name Tylenol). , ...
(Date:4/23/2015)... Texas (PRWEB) April 23, 2015 ReliantHeart's ... True Flow (blood flow through the device) in real ... by Numerex, the world’s leading provider of Machine to ... , True Flow via VADLink.com can ... there is any drop in flow below a minimum ...
(Date:4/22/2015)... , April 22, 2015 /PRNewswire/ - BioAmber Inc. (NYSE and EURONEXT Paris:BIOA) today ... first quarter 2015 on Thursday, May 7, 2015 after ... a webcast and conference call for 4.30 pm ET ... Live audio of the conference call will be ... investors, members of the news media and the general ...
(Date:4/22/2015)... 2015 2015 HIMSS Annual Conference & ... of the 9th annual Venture+ Forum pitch competition for ... selected to deliver live pitch presentations to a panel ... HIMSS15 held last week in Chicago ... professionals and 1,200 exhibiting companies from around the world, ...
Breaking Biology Technology:Proove Biosciences Launches World’s First Test to Predict Responders to Commonly Prescribed Non-Opioid Pain Medications 2Proove Biosciences Launches World’s First Test to Predict Responders to Commonly Prescribed Non-Opioid Pain Medications 3BioAmber Announces Webcast of Fiscal First Quarter 2015 Financial Results 2TowerView Health Named Venture+ Forum Pitch Competition Winner At HIMSS15 2TowerView Health Named Venture+ Forum Pitch Competition Winner At HIMSS15 3
Cached News: