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Role of Brain Imaging in Creating Personalized Treatment for Fibromyalgia

  [ 7 votes ]   [ 2 Comments ] • November 30, 2013

Role of Brain Imaging in Creating Personalized Treatment for Fibromyalgia

Brain imaging reveals dynamic changes caused by pain medicines

Study suggests role of brain imaging in creating personalized treatment of chronic pain

ANN ARBOR, Mich. – A study in the December issue of Anesthesiology suggests a role for brain imaging in the assessment and potential treatment of chronic pain.

University of Michigan researchers are the first to use brain imaging procedures to track the clinical action of pregabalin, a drug known by the brand name Lyrica® that is prescribed to patients suffering from fibromyalgia and neuropathic pain.

Three different brain imaging procedures were performed – proton magnetic resonance spectroscopy, functional magnetic resonance imaging and functional connectivity magnetic resonance imaging – in 17 patients with fibromyalgia.

Fibromyalgia is a chronic pain disorder thought to result from a disturbance in the way the central nervous system processes pain. It affects an estimated 10 million people in the United States and 3 to 6 percent of the world population.

Patients with fibromyalgia may spontaneously report pain throughout their bodies although there is no inflammatory or anatomical damage. In addition to chronic pain, patients may also suffer from related mood disturbances, such as anxiety and depression.

Previous research has shown that fibromyalgia patients may have heightened neural activity in a region of the brain involved in processing pain and emotion called the insula, and that this excess activity may be related to elevated levels of the excitatory neurotransmitter glutamate.

Brain imaging conducted at the U-M Health System suggests pregabalin works in part by reducing the concentration of glutamate within the insula, which is consistent with animal studies. These reductions in glutamate were also accompanied by decreases in insula connectivity and reductions in clinical pain ratings.

This type of brain activity imaging may help in the development of new pain medicines and personalized chronic pain treatment.

“The significance of this study is that it demonstrates that pharmacologic therapies for chronic pain can be studied with brain imaging,” says lead study author Richard Harris, Ph.D., assistant professor of anesthesiology at the University of Michigan.

“The results could point to a future in which more targeted brain imaging approaches can be used during pharmacological treatment of chronic widespread pain, rather than the current trial-and-error approach.”

The American Society of Anesthesiologists
Founded in 1905, the American Society of Anesthesiologists (ASA) is an educational, research and scientific society with more than 50,000 members organized to raise and maintain the standards of the medical practice of anesthesiology. ASA is committed to ensuring physician anesthesiologists evaluate and supervise the medical care of patients before, during and after surgery to provide the highest quality and safest care every patient deserves.

Reference: “Pregabalin rectifies aberrant brain chemistry, connectivity and functional response in chronic pain patients,” Vol. 119, Issue 6, December 2013, Anesthesiology, the Journal of the American Society of Anesthesiologists.

Additional authors: Vitaly Napadow, Ph.D.; John P. Huggins, Ph.D.; Lynne Pauer, M.S.; Jieun Kim, Ph.D.; Johnson Hampson, M.S.; Pia C. Sundgren, M.D.; Bradley Foerster, M.D.; Myria Petrou, M.D.; Tobias Schmidt-Wilcke, M.D.; and Daniel J. Clauw, M.D.

Funding: Pfizer Incorporated, Groton, CT

Conflicts of interest: Authors REH and DJC have previously consulted for Pfizer Inc., DJC was a consultant for Pfizer at the time of the study, and LP and JPH were employed by Pfizer and were shareholders at the time of this study.

Source: University of Michigan Health System, News Release, November 19, 2013.

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Article Comments Post a Comment

Posted by: jankainvegas
Dec 1, 2013
No inflammation? Please explain how this is even a serious article, anyone suffering with fibromyalgia will note MANY inconsistancies within this very poorly written piece. My inflammation is marked my sedimentation rates and have worried numerous doctors for over 20 years. I didn't even check who wrote this drivel, but they are very sadly mistaken about the average fibro sufferer. Very sadly, and what a disservice this writing is.
Reply Reply

Very good research, very scientific, and good job to the researchers
Posted by: richcarson
Dec 2, 2013
I found this to be a very interesting finding and I am impressed with this very sophisticated approach to determining what is happening in the brains of Fibromyalgia patients and what pharmacological agents might offer the most promise.

As for the person whose comment was so critical about this article, I would ask, are we reading the same article? My guess is that you didn't understand what it was even about.
Reply Reply
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