Featured Research

from universities, journals, and other organizations

Resveratrol, found in red wine, worsens MS-like symptoms

Date:
October 1, 2013
Source:
Elsevier Health Sciences
Summary:
Resveratrol, a naturally occurring polyphenol compound produced by the skin of red grapes and peanuts, and found in red wine, has been touted as a beneficial supplement due to its anti-inflammatory and antioxidant properties. This has been supported by some experimental studies, whereas others suggest a lack of benefit. A new study using two multiple sclerosis models has found that resveratrol actually worsened MS-like neuropathology and inflammation and had no neuroprotective effects.

Resveratrol, a naturally occurring polyphenol compound produced by the skin of red grapes and peanuts, and found in red wine, has been touted as a beneficial supplement due to its anti-inflammatory and antioxidant properties. This has been supported by some experimental studies, whereas others suggest a lack of benefit. A new study using two multiple sclerosis (MS) models published in The American Journal of Pathology has found that resveratrol actually worsened MS-like neuropathology and inflammation and had no neuroprotective effects.

"Resveratrol may have detrimental effects in some disease conditions and should be discouraged for supplemental use by MS patients pending further research," says lead investigator Ikuo Tsunoda, MD, PhD, Assistant Professor in the Department of Microbiology and Immunology, Center for Molecular & Tumor Virology of the Louisiana State University Health Sciences Center, Shreveport, LA.

Investigators (Fumitaka Sato, PhD, et al) tested resveratrol in autoimmune and viral models of MS. In the autoimmune model, experimental autoimmune encephalomyelitis (EAE) was induced in 6-week-old mice using myelin oligodendrocyte glycoprotein (MOG)35-55 peptide. Mice were fed either a control diet or a diet containing resveratrol for 2 months or only during the early (days -1 to 8) or the late (days 14 to 23) phases of EAE. Around 12 days after MOG sensitization, all groups started to develop clinical signs, such as tail and hind limb paralysis, and the symptoms worsened and peaked by 3 weeks. After 5 weeks, mice fed the control diet showed either complete recovery or mild paralysis, but all three groups fed resveratrol exhibited severe and lasting EAE without remission.

Spinal cord neuropathology showed higher pathology scores in demyelination, meningitis, perivascular cuffing (inflammation), and overall pathology in mice that had been given resveratrol during the early phase compared with mice fed a control diet, whereas mice treated with resveratrol during the entire treatment period had significantly higher pathology scores in meningitis and overall pathology than controls. Groups did not differ in brain pathology scores.

Although it has been suggested that resveratrol has anti-inflammatory properties, in this study resveratrol did not suppress autoimmune responses as measured by levels of MOG35-55-specific lymphoproliferative responses and pro-inflammatory cytokine production.

To see whether resveratrol had anti-viral properties, as has been reported, 5-week-old mice were infected intracerebrally with the Daniels (DA) strain of Theiler's murine encephalomyelitis virus (TMEV) to induce TMEV-induced demyelinating disease (TMEV-IDD). The mice were fed either a control diet or one containing resveratrol from days 35 to 48 (the chronic phase). Similar to the findings from the EAE model, mice treated with resveratrol developed significantly more severe TMEV-IDD compared with the controls. Another study using the GDVII strain of TMEV to see whether resveratrol could suppress neurodegeneration caused by direct viral infection, not by immunopathology, found that resveratrol had no neuroprotective activity against the virus.

"Resveratrol did not show anti-viral effects in TMEV infection," says Dr. Tsunoda, although he notes that resveratrol has been shown by others to have anti-viral effects on some viruses related to MS, such as herpes simplex virus and Epstein-Barr virus.

To explain their findings, the authors suggest that resveratrol's vasodilating effects via endothelial cells might enhance infiltration of inflammatory cells into the central nervous system, which in turn might play a key role in the pathogenesis of MS.

The degree to which resveratrol exacerbated demyelination and inflammation surprised the research team. "Our findings illustrate that caution should be exercised for potential therapeutic application of resveratrol in human inflammatory demyelination diseases, including MS," says Dr. Tsunoda.


Story Source:

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


Cite This Page:

Elsevier Health Sciences. "Resveratrol, found in red wine, worsens MS-like symptoms." ScienceDaily. ScienceDaily, 1 October 2013. <www.sciencedaily.com/releases/2013/10/131001091501.htm>.
Elsevier Health Sciences. (2013, October 1). Resveratrol, found in red wine, worsens MS-like symptoms. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2013/10/131001091501.htm
Elsevier Health Sciences. "Resveratrol, found in red wine, worsens MS-like symptoms." ScienceDaily. www.sciencedaily.com/releases/2013/10/131001091501.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

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
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
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