Featured Research

from universities, journals, and other organizations

Glucosamine-like supplement suppresses multiple sclerosis attacks, study suggests

Date:
September 30, 2011
Source:
University of California - Irvine
Summary:
A glucosamine-like dietary supplement suppresses the damaging autoimmune response seen in multiple sclerosis, according to a new study.

A glucosamine-like dietary supplement suppresses the damaging autoimmune response seen in multiple sclerosis, according to a UC Irvine study.

UCI's Dr. Michael Demetriou, Ani Grigorian and others found that oral N-acetylglucosamine (GlcNAc), which is similar to but more effective than the widely available glucosamine, inhibited the growth and function of abnormal T-cells that in MS incorrectly direct the immune system to attack and break down central nervous system tissue that insulates nerves.

Study results appear online in the Journal of Biological Chemistry.

Earlier this year, Demetriou and colleagues discovered that environmental and inherited risk factors associated with MS -- previously poorly understood and not known to be connected -- converge to affect how specific sugars are added to proteins regulating the disease.

"This sugar-based supplement corrects a genetic defect that induces cells to attack the body in MS," said Demetriou, associate professor of neurology and microbiology & molecular genetics, "making metabolic therapy a rational approach that differs significantly from currently available treatments."

Virtually all proteins on the surface of cells, including immune cells such as T-cells, are modified by complex sugar molecules of variable sizes and composition. Recent studies have linked changes in these sugars to T-cell hyperactivity and autoimmune disease.

In mouse models of MS-like autoimmune disease, Demetriou and his team found that GlcNAc given orally to those with leg weakness suppressed T-cell hyperactivity and autoimmune response by increasing sugar modifications to the T-cell proteins, thereby reversing the progression to paralysis.

The study comes on the heels of others showing the potential of GlcNAc in humans. One reported that eight of 12 children with treatment-resistant autoimmune inflammatory bowel disease improved significantly after two years of GlcNAc therapy. No serious adverse side effects were noted.

"Together, these findings identify metabolic therapy using dietary supplements such as GlcNAc as a possible treatment for autoimmune diseases," said Demetriou, associate director of UCI's Multiple Sclerosis Research Center. "Excitement about this strategy stems from the novel mechanism for affecting T-cell function and autoimmunity -- the targeting of a molecular defect promoting disease -- and its availability and simplicity."

He cautioned that more human studies are required to assess the full potential of the approach. GlcNAc supplements are available over the counter and differ from commercially popular glucosamine. People who purchase GlcNAc should consult with their doctors before use.

Lindsey Araujo and Dylan Place of UCI and Nandita N. Naidu and Biswa Choudhury of UC San Diego also participated in the research, which was funded by the National Institutes of Health and the National Multiple Sclerosis Society.


Story Source:

The above story is based on materials provided by University of California - Irvine. Note: Materials may be edited for content and length.


Journal Reference:

  1. A. Grigorian, L. Araujo, N. N. Naidu, D. Place, B. Choudhury, M. Demetriou. N-acetylglucosamine inhibits T-helper 1 (Th1) / T-helper 17 (Th17) responses and treats experimental autoimmune encephalomyelitis. Journal of Biological Chemistry, 2011; DOI: 10.1074/jbc.M111.277814

Cite This Page:

University of California - Irvine. "Glucosamine-like supplement suppresses multiple sclerosis attacks, study suggests." ScienceDaily. ScienceDaily, 30 September 2011. <www.sciencedaily.com/releases/2011/09/110930123057.htm>.
University of California - Irvine. (2011, September 30). Glucosamine-like supplement suppresses multiple sclerosis attacks, study suggests. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/2011/09/110930123057.htm
University of California - Irvine. "Glucosamine-like supplement suppresses multiple sclerosis attacks, study suggests." ScienceDaily. www.sciencedaily.com/releases/2011/09/110930123057.htm (accessed August 1, 2014).

Share This




More Health & Medicine News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Vaccine Might Be Coming, But Where's It Been?

Ebola Vaccine Might Be Coming, But Where's It Been?

Newsy (Aug. 1, 2014) Health officials are working to fast-track a vaccine — the West-African Ebola outbreak has killed more than 700. But why didn't we already have one? Video provided by Newsy
Powered by NewsLook.com
Study Links Certain Birth Control Pills To Breast Cancer

Study Links Certain Birth Control Pills To Breast Cancer

Newsy (Aug. 1, 2014) Previous studies have made the link between birth control and breast cancer, but the latest makes the link to high-estrogen oral contraceptives. Video provided by Newsy
Powered by NewsLook.com
House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Uganda on Alert for Ebola but No Confirmed Cases

Uganda on Alert for Ebola but No Confirmed Cases

AFP (July 31, 2014) Uganda's health minister said on Thursday that there are no confirmed cases of Ebola in the country, but that it remained on alert for cases of the deadly virus. Uganda has suffered Ebola outbreaks in the past, most recently in 2012. Duration: 00:59 Video provided by AFP
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:
from the past week

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