Featured Research

from universities, journals, and other organizations

Omega-3s reduce stroke severity, study suggests

Date:
August 26, 2011
Source:
Université Laval
Summary:
A diet rich in omega-3s reduces the severity of brain damage after a stroke, according to a new study. Researches have shown that the extent of brain damage following a stroke was reduced by 25 percent in mice that consumed DHA type omega-3s daily.

A diet rich in omega-3s reduces the severity of brain damage after a stroke, according to a study conducted by Université Laval researchers. The team, co-directed by professors Jasna Kriz and Frédéric Calon, showed that the extent of brain damage following a stroke was reduced by 25% in mice that consumed DHA type omega-3s daily. Details of the study can be found on the website of the journal Stroke.

Related Articles


Researchers observed that the effects of stroke were less severe in mice that had been fed a diet rich in DHA for three months than in mice fed a control diet. In mice from the DHA group, they saw a reduction in the concentrations of molecules that stimulate tissue inflammation and, conversely, a larger quantity of molecules that prevent the activation of cell death.

"This is the first convincing demonstration of the powerful anti-inflammatory effect of DHA in the brain," underscored Frédéric Calon of Université Laval's Faculty of Pharmacy. This protective effect results from the substitution of molecules in the neuronal membrane: DHA partially replaces arachidonic acid, an omega-6 fatty acid known for its inflammatory properties.

"The consumption of omega-3s creates an anti-inflammatory and neuroprotective environment in the brain that mitigates damage following a stroke," summarized Jasna Kriz, of Université Laval's Faculty of Medicine. "It prevents an acute inflammatory response that, if not controlled, is harmful to brain tissue."

Professor Calon believes that this anti-inflammatory effect is likely transferable to humans. "Since DHA is readily available, inexpensive, and reduces the risk of a number of health problems without causing significant side effects, the risk-benefit ratio tends to favor the regular consumption of fish or DHA," he concluded.

In addition to Kriz and Calon, the study was co-authored by Mélanie Lalancette-Hébert, Pierre Cordeau, Carl Julien, Ivan Bohacek, and Yuan-Cheng Weng. The authors are all members of the CHUQ Research Center.


Story Source:

The above story is based on materials provided by Université Laval. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Lalancette-Hebert, C. Julien, P. Cordeau, I. Bohacek, Y.-C. Weng, F. Calon, J. Kriz. Accumulation of Dietary Docosahexaenoic Acid in the Brain Attenuates Acute Immune Response and Development of Postischemic Neuronal Damage. Stroke, 2011; DOI: 10.1161/STROKEAHA.111.620856

Cite This Page:

Université Laval. "Omega-3s reduce stroke severity, study suggests." ScienceDaily. ScienceDaily, 26 August 2011. <www.sciencedaily.com/releases/2011/08/110825102250.htm>.
Université Laval. (2011, August 26). Omega-3s reduce stroke severity, study suggests. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2011/08/110825102250.htm
Université Laval. "Omega-3s reduce stroke severity, study suggests." ScienceDaily. www.sciencedaily.com/releases/2011/08/110825102250.htm (accessed January 31, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Saturday, January 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NFL Concussions Down; Still on Parents' Minds

NFL Concussions Down; Still on Parents' Minds

AP (Jan. 30, 2015) — The NFL announced this week that the number of game concussions dropped by a quarter over last season. Still, the dangers of the sport still weigh on players, and parents&apos; minds. (Jan. 30) Video provided by AP
Powered by NewsLook.com
Study Shows Newborn Chicks Count From Left to Right Just Like Humans

Study Shows Newborn Chicks Count From Left to Right Just Like Humans

Buzz60 (Jan. 30, 2015) — Researchers for the first time identified human&apos;s innate preference for associating low and high numbers with the left and right respectively in another species. Jen Markham (@jenmarkham) explains. Video provided by Buzz60
Powered by NewsLook.com
Best Mood Elevating, Feel Good Shakes & Smoothies

Best Mood Elevating, Feel Good Shakes & Smoothies

Buzz60 (Jan. 30, 2015) — You can elevate your mood by having a meal in a glass. Fitness and nutrition expert John Basedow (@JohnBasedow) offers the best &apos;feel good&apos; smoothies and shakes chock full of depression-relieving ingredients...including apples, berries, lemons, cucumbers, papaya, kiwi, spinach, kale, whey protein, matcha, ginger, turmeric and cinnamon. Video provided by Buzz60
Powered by NewsLook.com
Poll Says Firstborn Is Responsible, Youngest Is Funnier

Poll Says Firstborn Is Responsible, Youngest Is Funnier

Newsy (Jan. 30, 2015) — According to a poll out of the U.K., eldest siblings feel more responsible and successful than their younger siblings. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins