HOME >> MEDICINE >> NEWS
New light on the role of microbial pathogens in atherosclerosis

Cardiovascular disease is the leading cause of death in industrialized countries (32% of all deaths in France, for example), and atherosclerosis is often the underlying process. Genetic and environmental factors (such as smoking, obesity, hypertension and high cholesterol levels) are known to play a role in atherosclerosis, but various lines of evidence also suggest that microbial pathogens are involved in the formation of atheroma plaque (i.e. atherosclerosis) or in its rupture (potentially leading to cardiovascular events). Bacteria (especially Chlamydia pneumoniae) and viruses have been detected at an abnormally high frequency in atheroma plaque, and have been forwarded either as co-factors in people already at risk, or as the chief cause of atherosclerosis in people with none of the classical risk factors.

Alain Tedgui, Ziad Mallat (Inserm unit 141, headed by Bernard Lvy) and their coworkers found that microbial pathogens induced atherosclerosis in experimental mice when an antiinflammatory cytokine, interleukin 10 (IL-10), was lacking. IL-10 production is under genetic control. Between 50 and 60% of the human population can produce high levels of this cytokine, while 40 to 50% produce intermediate levels and 5 to 10% can only synthesize small amounts.

The Inserm team worked on a mouse strain deficient in IL-10. The animals were raised in cages with filtered air (protecting them from air-borne microbes), and received a diet designed to induce atheroma plaque. The researchers found that the plaques were three times bigger than in similarly treated mice with normal IL-10 production, thereby demonstrating that IL-10 limits atheroma plaque formation.

The team then examined what happened when IL-10-deficient mice and their normal counterparts mice were exposed to unfiltered air containing microbial pathogens. This time the atheroma plaques in the deficient mice were 30 times larger than in their IL-10-producing counterparts. In other words, exposure
'"/>

Contact: Alain Tedgui
alain.tedgui@inserm.lrb.ap-hop-paris.fr
33-1-44-63-18-60
French National Institute for Health and Medical Research (INSERM)
15-Oct-1999


Page: 1 2

Related medicine news :

1. Study of energy and health in Africa focuses spotlight on charcoal and forest management
2. Other highlights in the March 16 JNCI
3. CAS science spotlight identifies most requested article
4. In solution, tiny magnetic wires scatter light
5. Medical molecules designed to respond to visible light that can penetrate tissue
6. Aircraft cabin ventilation influences the transmission of diseases in-flight
7. Lectures, keynoters, symposia highlight International Dental Research meeting
8. Other highlights in the March 2 JNCI
9. Bacteria collection sheds light on urinary tract infections
10. Two studies find evidence that sunlight may have beneficial influence on cancer
11. Other highlights in the February 2 JNCI

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


(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term insurance that covers care ... have a waiver for care if the client has a cognitive impairment diagnosis. ... for care, is often waived, so the benefits from their insurance start immediately,” said ...
(Date:10/13/2017)... ... 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out ... free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting ... children of all ages; it is a non-competitive, non-timed event, which is all about ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... Agile Software Development, has been awarded a contract by the Center for Medicare ... (BPA) aims to accelerate the enterprise use of Agile methodologies in a consistent ...
(Date:10/12/2017)... ... October 12, 2017 , ... First ... compliance program management, will showcase a range of technology and learning solutions at ... (NCAL) Convention and Expo to be held October 14–18, 2017 at the Mandalay ...
(Date:10/12/2017)... ... October 12, 2017 , ... The company ... of today’s consumer and regulatory authorities worldwide. From Children’s to Adults 50+, every ... meet the highest standard. , These products are also: Gluten Free, Non-GMO, ...
Breaking Medicine News(10 mins):
(Date:9/28/2017)... -- Cohen Veterans Bioscience and Early Signal Foundation announce ... home sensors for real-time monitoring of patients with trauma-related ... organization focused on disruptive health solutions for rare disorders ... to record and integrate behavioral, cognitive, physiological and contextual ... ...
(Date:9/27/2017)... , Sept. 27, 2017  DarioHealth Corp. (NASDAQ: DRIO), a leading global ... that its MyDario product is expected to appear on The Dr. Oz ... Dr. Oz Show airs in your area: http://www.doctoroz.com/page/where-watch-dr-oz-show ... The nine-time Emmy award-winning, The Dr. Oz Show kicked ... The segment features ...
(Date:9/25/2017)... 2017  EpiVax, Inc., a leader in the ... today announced the launch of EpiVax Oncology Inc., ... therapeutic cancer vaccines. EpiVax has provided $500,000 in ... enabling technologies to the new precision immunotherapy venture. ... Oncology as Chief Executive Officer. Gad brings over ...
Breaking Medicine Technology:
Cached News: