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:5/14/2015)... May 14, 2015  Verificient Technologies, Inc., ... and online remote proctoring, announced a new ... company and creator of the Canvas Learning ... two companies will benefit from the seamless ... As a fully integrated multifactor biometrics ...
(Date:5/11/2015)... Ohio , May 11, 2015  Through a well-rounded ... Ohio had a strong showing at AUVSI,s Unmanned ... These representatives of Ohio,s UAS industry ... and abroad from all points along the UAS ecosystem. ... Development Coalition,s (DDC) Vice President for Aerospace Rich Knoll ...
(Date:5/10/2015)... GOTHENBURG, Sweden , May 11, 2015 ... touch fingerprint sensors FPC1025 and FPC1155 from the distributor World ... one of FPC,s distributors in Asia . ... the sensors will be used by smartphone manufacturers in ... is included in the communicated revenue guidance of + 1 000 ...
Breaking Biology News(10 mins):Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2
(Date:5/21/2015)... Specialty Pharmacy Times has completed its ... BPA Worldwide as a business publication member. As ... for Specialty Pharmacy Times based on business/distribution, demographics ... member of BPA Worldwide, Specialty Pharmacy Times shows ... the most reliable, unequaled data,” said Chris Hennessy, ...
(Date:5/21/2015)... 21, 2015  The EveryLife Foundation for Rare ... and Amy Klobuchar (D-MN) today for ... & Treatments, or OPEN ACT. Supported ... organizations, this bipartisan legislation promises to rapidly bring ... rare disease patients by incentivizing drug makers to ...
(Date:5/21/2015)... , May 21, 2015  CytRx Corporation (NASDAQ: ... company specializing in oncology, today announced positive updated ... with aldoxorubicin for the treatment of unresectable glioblastoma ...  The open-label, multisite trial is designed to investigate ... patients whose tumors have progressed following prior treatment ...
(Date:5/21/2015)... Veolia’s environmental monitoring technology division, ... distribution agreement with VWR to distribute TECTA™ B16, ... than 160 years of experience, VWR, a leading ... and production facilities, has cultivated a value proposition ... to enable science. Endetec’s TECTA™ B16, combines ...
Breaking Biology Technology:Specialty Pharmacy Times Joins BPA Worldwide 2Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 3CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 4CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 5CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 6CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 7Veolia’s TECTA™ B16 Instrument for E. Coli Detection is Offered Exclusively Through VWR 2
Cached News: