HOME >> BIOLOGY >> NEWS
In limiting life span, study finds booming bacteria innocent

Aging flies are simply crawling with bacteriaboth inside and outbut their microbial infestations dont seem to hasten the insects toward death, according to a new study in the August issue of the journal Cell Metabolism, a publication of Cell Press. The findings suggest that the energy the flies expend to fight their burgeoning bugs comes without a longevity trade-off, the researchers said.

Its a surprise, said John Tower of the University of Southern California. Even though the flies were accumulating so much bacteria and a robust immune response to that bacteria, its not limiting how long the flies live. The question is, if its not bacteria that limit life span, then what is it" Weve reduced the number of possibilities.

Towers interest in the problem stemmed in part from the fact that humans and some bacteria are known to have mutually beneficial relationships. People gain nutrients and energy with the aid of bacteria, and the microbes are provided with a buffered environment, carbohydrates, and other nutrients, the researchers noted. Since immune function is impaired with age, it might be expected that bacterial load would increase or be otherwise altered as people grow older. Indeed, studies have found shifts in humans intestinal bacteria with age and evidence that bacteria may blossom in the prostate and other organs of the elderly.

To explore the consequences of such changes in bacteria with age in greater detail, the researchers looked to flies. Drosophila flies are emerging as an ideal model system in which to study most aspects of immunity, including innate immune pathwayswhich represent the bodys first line of defensecellular immunity, and the metabolic effects of infection, Towers group said.

The researchers showed that the insects exhibited dramatic increases in many types of bacteria during aging, both inside the body and on the surface. It was gradual across their life span, Tower said. It went from virtually u
'"/>

Contact: Erin Doonan
edoonan@cell.com
617-397-2802
Cell Press
7-Aug-2007


Page: 1 2

Related biology news :

1. UCI researchers define estrogens role in limiting heart disease in women
2. New study warns limited carbon market puts 20 percent of tropical forest at risk
3. Clones on task serve greater good, evolutionary study shows
4. Pollution causes 40 percent of deaths worldwide, study finds
5. A study by the MUHC and McGill University opens a new door to understanding cancer
6. New study suggests Concord grape juice may provide protection against breast cancer
7. Preclinical study links gene to brain aneurysm formation
8. Multicenter study nets new lung tumor-suppressor gene
9. MIT study: Maturity brings richer memories
10. Chickadee, nutchatch presence in conifers increases tree growth, says CU-Boulder study
11. Phase II study of therapeutic vaccine shows efficacy in patients with metastatic colorectal cancer

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


(Date:11/6/2019)... ROCHELLE, Va. (PRWEB) , ... November 06, 2019 ... ... announced today that Donald Stanski, MD, a senior pharmaceutical industry executive with expertise ... modeling and simulation for drug and disease strategic data analytics, has joined the ...
(Date:11/6/2019)... ... 06, 2019 , ... Genomenon® announced the ... includes the ability to search the entirety of the genomic literature by phenotypes ... rare diseases. , Patients, particularly those with rare diseases, don’t always have a ...
(Date:11/5/2019)... (PRWEB) , ... November 05, 2019 , ... ... Amato Dentistry, providing state-of-the-art cosmetic and restorative dentistry to Seattle, WA, including ... Doctor of Dental Surgery degree from the University of Washington, Dr. Kopp is ...
Breaking Biology News(10 mins):
(Date:11/2/2019)... , ... October 31, 2019 , ... ... always used to communicating with each other: study managers, principal investigators, supply chain ... if a party is not informed of the latest data, potentially leading to ...
(Date:10/30/2019)... ... October 30, 2019 , ... Western University of ... innovation and technology play in educating the next generation of health care providers. ... and presentations by WesternU administrators and representatives of companies working with the University ...
(Date:10/26/2019)... ... 24, 2019 , ... Sparks Marketing Group, Inc. (Sparks) ... a boutique healthcare-specific marketing firm, to strengthen the agency’s growing focus on the ... Healthcare clients in pharma, bio-therapeutics, medical device and healthcare technologies currently account for ...
(Date:10/22/2019)... (PRWEB) , ... October 22, 2019 , ... ... biotherapeutics, has announced that its lead program, DBI-001, met its primary safety endpoints, ... open labeled phase 2a clinical trial for the treatment of interdigital tinea pedis ...
Breaking Biology Technology:
Cached News: