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

ndetectable to a million or more per fly.

Using a scanning electron microscope to examine the insects outer surfaces, the researchers showed that some of the bacteria were even banding together, forming continuous biofilms. Yet treatments that reduced the number of bacteria had no effect on life span, they found. That discovery led the researchers to conclude that, at least under optimal laboratory conditions, Drosophila can tolerate a significant number of bacteria and mount a strong innate immune response against them without cutting their 65-day lives any shorter.

There has been some thinking in general that life span is regulated according to trade-offsthat the body has only so much energy to devote to different processes, Tower said. If you devote a lot [of energy] to controlling bacteria, preventing them from growing to a toxic level, then that energy isnt available to maintain tissues and organs. However, we found no effect on the animals longevity even when their bacteria are taken from one extreme to the other.

Nevertheless, he added, the bacterial infestations seen in the aged flies have to be a quality of life issue.


'"/>

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:11/17/2016)... Calif. , Nov. 17, 2016  AIC announces that it has just released ... in organizations that require high-performance scale-out plus high speed data transfer storage solutions. ... ... ... Setting up a high ...
(Date:11/14/2016)... -- xG Technology, Inc. ("xG" or the "Company") (Nasdaq: XGTI, ... use in challenging operating environments, announced its results for ... hold a conference call to discuss these results on ... below). Key Recent Accomplishments ... to acquire Vislink Communication Systems. The purchase is expected ...
(Date:6/22/2016)... , June 22, 2016   ... management and verification solutions, has partnered with ... software solutions for Visitor Management, Self-Service Kiosks ... provides products that add functional enhancements to ... provides corporations and venues with an automated ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... 2016 According to the ... Products (Consumable, Instruments, Automated Cell Expansion System), Cells ... Cell Research, Cancer, and Cell-Based Research), End-users (Biopharmaceutical ... Global Revenue, Trends, Growth, Share, Size and Forecast ... global cell expansion market is expected to reach ...
(Date:12/5/2016)... MDx announced today that it brought its NxGen Informed Prenatal Test in-house. ... improve customer service through shortened turnaround times and at the same time ... NxGen MDx. ... A decrease in turnaround times by 25% combined with ... the Grand Rapid headquarters. The NxGen Informed Prenatal Test uses ...
(Date:12/5/2016)... 2016 The U.S. Biotechnology industry ... billion of revenue and some $890 billion of total ... global biopharmaceuticals, and this figure is expected to exceed ... up these four equities for assessment: Northwest Biotherapeutics Inc. ... ACAD ), Acorda Therapeutics Inc. (NASDAQ: ...
(Date:12/4/2016)...  In five studies being presented today during the ... Exposition in San Diego , researchers ... delivery of life-saving treatments to patients with a variety ... carry therapies directly to the sites in the body ... substantial advantage over traditional, systemic methods. The studies highlight ...
Breaking Biology Technology:
Cached News: