Navigation Links
New Study Debunks Virus Theory for Chronic Fatigue Syndrome
Date:9/18/2012

By Kathleen Doheny
HealthDay Reporter

TUESDAY, Sept. 18 (HealthDay News) -- Confirming earlier scientific doubts, a new study concludes that chronic fatigue syndrome is not caused by two viruses known as XMRV and pMLV.

Researchers from the U.S. National Institutes of Health, the U.S. Centers for Disease Control and Prevention, Columbia University and other institutions, including some scientists who did the original research, examined 147 patients with chronic fatigue syndrome from sites across the country and compared them to 146 healthy patients.

Bottom line? "This analysis reveals no evidence of either XMRV or pMLV infection," the authors wrote. The study is published in the September/October issue of the journal mBio.

Chronic fatigue syndrome, also called myalgic encephalomyelitis, affects about 1 million people in the United States, according to a Columbia news release, with women more likely to have the diagnosis. The condition is marked by unexplained fatigue that doesn't get better with bed rest.

Patients also report problems with memory or other thinking skills, muscle or joint pain, headache and other symptoms.

In 2009, a paper published in the journal Science connected the syndrome to infection with a mouse virus known as XMRV, for xenotropic murine leukemia virus-related virus.

In 2010, another study found a virus, polytropic murine leukemia virus, called pMLV, in some patients, which lent more support to a viral theory.

However, editors at Science later retracted the 2009 report, saying follow-up findings failed to confirm the original findings.

To lay the matter to rest, researchers launched the new study.

They assessed blood samples from the group affected by chronic fatigue syndrome and those not affected.

None of the samples had evidence of either virus.

The new study should end any concerns about the viruses causing the disease, said K. Kimberly McCleary, president of the CFIDS (Chronic Fatigue Immune Dysfunction Syndrome) Association of America.

"Over the past three years, more than 70 publications have followed the original report linking CFS to XMRV," she said.

The new report addresses weaknesses of past research, she said. It also "provides a conclusive answer and offers closure. The totality of published evidence indicates clearly that there should be no lingering concerns about XMRV/pMLVs infecting individuals with CFS."

"There can no longer be any ambiguity," said Dr. Jonathan Stoye, head of virology at the MRC National Institute for Medical Research, in London. "There is no remaining evidence linking XMRV or pMLV with [chronic fatigue syndrome/myalgic encephalomyelitis]," he said.

Over the years, researchers have looked at many types of infections to see if they might trigger or cause chronic fatigue syndrome, according to the CDC. Among them are the virus that causes Epstein-Barr infection, human herpes virus, the Ross River virus and others.

Studies on whether changes in a person's immune system might lead to CFS have been mixed. There is no evidence that chronic fatigue syndrome is caused by deficiencies in nutrition, although experts recommend a balanced diet for anyone with the condition.

There is no cure for chronic fatigue syndrome. According to the CDC, treatment is tailored to a person's specific symptoms. The CDC recommends addressing the most disruptive symptoms, such as fatigue, sleep problems and depression or anxiety.

More information

To learn more about chronic fatigue syndrome, visit the U.S. Centers for Disease Control and Prevention.

SOURCES: K. Kimberly McCleary, president and CEO, CFIDS Association of America; Jonathan Stoye, Ph.D., head, virology, MRC National Institute for Medical Research, London; September/October 2012 mBio


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Aerobic Exercise Cuts Kids Diabetes Risk: Study
2. Infection data may not be comparable across hospitals, study shows
3. Study provides roadmap for delirium risks, prevention, treatment, prognosis and research
4. Exercise May Prevent Stress and Anxiety, Study Suggests
5. Self-Harm Associated With Premature Death in Study
6. Too Much Salt Might Harm Kids Health: Study
7. Study Assesses Blood Thinner Use After Gastrointestinal Bleeding
8. Study links breast cancer risk to early-life diet and metabolic syndrome
9. Cleveland Clinic study shows vitamin E may decrease cancer risk in Cowden syndrome patients
10. Scientist receives $2.8 Million to study cell signaling mechanism and develop potential therapeutics
11. Shingles Not Linked to Increased Cancer Risk, Study States
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New Study Debunks Virus Theory for Chronic Fatigue Syndrome
(Date:5/5/2016)... ... 05, 2016 , ... Einstein Medical is proud to announce that ... news and commentary at the 2016 ASCRS/ASOA Symposium and Congress, which takes place in ... Cataract and Refractive Surgery and the American Society of Ophthalmic Administrations will be held ...
(Date:5/5/2016)... , ... May 05, 2016 , ... This weekend, from Friday, May 6 - Sunday, ... steep California terrain at the first Team Semper Fi Mountain Bike Camp, hosted in conjunction ... be mountain bike legends Mark Weir and Jason Moeschler, who’ll share pro tips with the ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... for Business Journalists , led by the Wharton School’s most prominent professors, ... This one-day program at the Wharton School’s San Francisco campus will feature ...
(Date:5/5/2016)... ... 2016 , ... Derrin Doty Group has unveiled the latest charity campaign in ... west of Seattle. The insurance provider’s caring team has been so moved by the ... to complications from the flu, that they have decided to extend their original campaign. ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... master charity program created to assist the people of their local community. The ... nonprofit organizations and community leaders. Their hope is to bring awareness to important ...
Breaking Medicine News(10 mins):
(Date:5/5/2016)... -- Progra m m e ... , s mosquito in Cayman Islands ... by 96 %   Oxitec and the Cayman Islands ... Aedes aegypti, the dangerous mosquito that spreads dengue, Zika and chikungunya, ... Grand Cayman .  MRCU, a global leader in mosquito control, is planning ...
(Date:5/5/2016)... , May 5, 2016 /PRNewswire/ ... announced the addition of the  "Europe ... - 2016"  report to their offering.  ... ) , ,The latest research ... Highlights - 2016, provides comprehensive insights ...
(Date:5/4/2016)... 4, 2016  Compass Diversified Holdings (NYSE: ... owner of leading middle market businesses, announced today its ... 31, 2016. First Quarter 2016 Highlights ... ("CAD" or "Cash Flow") of $13.6 million for the ... of $15.0 million for the first quarter of 2016; ...
Breaking Medicine Technology: