Navigation Links
Fountain of youth in bile? Longevity molecule identified
Date:9/15/2010

Montreal September 15, 2010 The human quest for longer life may be one step closer, thanks to research from Concordia University. Published in the journal Aging, a new study is the first to identify the role of a bile acid, called lithocholic acid (LCA), in extending the lifespan of normally aging yeast. The findings may have significant implications for human longevity and health, as yeast share some common elements with people.

"Although we found that LCA greatly extends yeast longevity, yeast do not synthesize this or any other bile acid found in mammals," says senior author Vladimir Titorenko, Concordia University Research Chair in Genomics, Cell Biology and Aging and a professor in the Department of Biology. "It may be that yeast have evolved to sense bile acids as mildly toxic molecules and respond by undergoing life-extending changes. It is conceivable that the life-extending potential of LCA may be relevant to humans as well."

Over 19 000 small molecules screened

Titorenko and colleagues screened more than 19 000 small molecules to test their ability to extend yeast-lifespan. Under both normal and stressed conditions, LCA had a major impact.

"Our findings imply that LCA extends longevity by targeting two different mechanisms," says first author Alexander Goldberg, a Concordia doctoral student. "The first takes place regardless of the number of calories and involves the day-to-day or housekeeping proteins. The second system occurs during calorie-restriction and involves stressor proteins."

"Regardless of their triggers both of these mechanisms work to suppress the pro-aging process," he continues.

Bile acids may be beneficial to health

"Although we have an overall idea how LCA works to extend longevity in yeast, we still need to determine if this is the case for other species," says Titorenko. "We do know from previous studies, however, that bile acids are beneficial to health and longevity. For example, they have shown to accumulate in the serum of long living mice and play a role in improving rodent liver and pancreatic function."

"This leads us to believe that bile acids have potential as pharmaceutical agents for the treatment of diabetes, obesity and various metabolic disorders, all of which are age-related," continues Titorenko. "They may indeed offer hope for a healthy aging life."


'/>"/>

Contact: Sylvain-Jacques Desjardins
s-j.desjardins@concordia.ca
51-484-824-245-068
Concordia University
Source:Eurekalert

Related biology news :

1. Scientists find a biological fountain of youth in new world bat caves
2. Fountain of Youth to be found in the anthill?
3. Summer day camps provide fun; environmental education activities for Humboldt County youth
4. To close achievement gap, US must address major health risks for urban minority youth, study finds
5. Researchers develop dietary formula that maintains youthful function into old age
6. U of M study identifies risk factors of disordered eating in overweight youth
7. Joslin research finds nearly three-quarters of youths with diabetes insufficient in vitamin D
8. Jefferson scientists identify a new protein involved in longevity
9. Tree-dwelling mammals climb to the heights of longevity
10. Longevity tied to genes that preserve tips of chromosomes
11. Environmental cues control reproductive timing and longevity, University of Minnesota study shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2016)... -- http://www.apimages.com ) - --> http://www.apimages.com ) ... AP Images ( http://www.apimages.com ) - Germany ... the new refugee identity cards. DERMALOG will be unveiling this device, ... Hanover next week.   --> Germany ... produce the new refugee identity cards. DERMALOG will be unveiling this ...
(Date:3/9/2016)... , March 9, 2016 This BCC ... future states of the RNA Sequencing (RNA Seq) market ... such as instruments, tools and reagents, data analysis, and ... various segments of the RNA-Sequencing market such as RNA-Sequencing ... Identify the main factors affecting each segment and forecast ...
(Date:3/3/2016)... 2016  FlexTech, a SEMI Strategic Association Partner, awarded ... & Development, Leadership in Education, and, in a category ... th year of the FLEXI Awards and the ... from past years . Judging was done on ... of criteria, by a panel of non-affiliated, independent, industry ...
Breaking Biology News(10 mins):
(Date:5/5/2016)... ... May 05, 2016 , ... American ... two additional patents, U.S. Patent Nos. 9,322,133 and 9,322,134, to API and its ... nanocellulose as well as hydrophobic nanocellulose compositions. In addition to these patents ...
(Date:5/5/2016)... BELL, Pa. , May 5, 2016  Why ... Powers and Lorna Weir launching a ... un-agency way? Because they believe that truly helping clients ... world of healthcare now demands a different type of ... strategy lab serving the pharmaceutical, biotechnology and medical device ...
(Date:5/5/2016)... , ... May 05, 2016 , ... ... previously announced identification of its first three targets, it has identified a fourth ... beta (Aß), implicated in the development and progression of Alzheimer’s disease (AD). ...
(Date:5/4/2016)... ... 2016 , ... CereScan, the nation’s leader in providing statistically ... Stroke Awareness Month in May. An infographic created by CereScan will be ... will donate $1 up to a maximum of $3,000 through users who share ...
Breaking Biology Technology: