Navigation Links
Atrophy in key region of brain associated with multiple sclerosis
Date:4/22/2013

OAK BROOK, Ill. Magnetic resonance imaging (MRI) measurements of atrophy in an important area of the brain are an accurate predictor of multiple sclerosis (MS), according to a new study published online in the journal Radiology. According to the researchers, these atrophy measurements offer an improvement over current methods for evaluating patients at risk for MS.

MS develops as the body's immune system attacks and damages myelin, the protective layer of fatty tissue that surrounds nerve cells within the brain and spinal cord. Symptoms include visual disturbances, muscle weakness and trouble with coordination and balance. People with severe cases can lose the ability to speak or walk.

Approximately 85 percent of people with MS suffer an initial, short-term neurological episode known as clinically isolated syndrome (CIS). A definitive MS diagnosis is based on a combination of factors, including medical history, neurological exams, development of a second clinical attack and detection of new and enlarging lesions with contrast-enhanced or T2-weighted MRI.

"For some time we've been trying to understand MRI biomarkers that predict MS development from the first onset of the disease," said Robert Zivadinov, M.D., Ph.D., FAAN, from the Buffalo Neuroimaging Analysis Center of the University at Buffalo in Buffalo, N.Y. "In the last couple of years, research has become much more focused on the thalamus."

The thalamus is a structure of gray matter deep within the brain that acts as a kind of relay center for nervous impulses. Recent studies found atrophy of the thalamus in all different MS disease types and detected thalamic volume loss in pediatric MS patients.

"Thalamic atrophy may become a hallmark of how we look at the disease and how we develop drugs to treat it," Dr. Zivadinov said.

For this study, Dr. Zivadinov and colleagues investigated the association between the development of thalamic atrophy and conversion to clinically definite MS.

"One of the most important reasons for the study was to understand which regions of the brain are most predictive of a second clinical attack," he said. "No one has really looked at this over the long term in a clinical trial."

The researchers used contrast-enhanced MRI for initial assessment of 216 CIS patients. They performed follow-up scans at six months, one year and two years. Over two years, 92 of 216 patients, or 42.6 percent, converted to clinically definite MS. Decreases in thalamic volume and increase in lateral ventricle volumes were the only MRI measures independently associated with the development of clinically definite MS.

"First, these results show that atrophy of the thalamus is associated with MS," Dr. Zivadinov said. "Second, they show that thalamic atrophy is a better predictor of clinically definite MS than accumulation of T2-weighted and contrast-enhanced lesions."

The findings suggest that measurement of thalamic atrophy and increase in ventricular size may help identify patients at high risk for conversion to clinically definite MS in future clinical trials involving CIS patients.

"Thalamic atrophy is an ideal MRI biomarker because it's detectable at very early stage," Dr. Zivadinov said. "It has very good predictive value, and you will see it used more and more in the future."

The research team continues to follow the study group, with plans to publish results from the four-year follow-up next summer. They are also trying to learn more about the physiology of the thalamic involvement in MS.

"The next step is to look at where the lesions develop over two years with respect to the location of the atrophy," Dr. Zivadinov said. "Thalamic atrophy cannot be explained entirely by accumulation of lesions; there must be an independent component that leads to loss of thalamus."

MS affects more than 2 million people worldwide, according to the Multiple Sclerosis International Foundation. There is no cure, but early diagnosis and treatment can slow development of the disease.


'/>"/>

Contact: Linda Brooks
lbrooks@rsna.org
630-590-7762
Radiological Society of North America
Source:Eurekalert

Related medicine news :

1. Cedars-Sinai researchers, with stem cells, advance understanding of spinal muscular atrophy
2. Study finds genes associated with hippocampal atrophy
3. Maturitas publishes clinical guide on low-dose vaginal estrogens for vaginal atrophy
4. Dr. Farshchian: Muscle Atrophy a Major Problem with Arthritis, is Being Treated with Cell Therapy at the Center for Regenerative Medicine
5. Dr. Farshchian: Muscle Atrophy a Major Problem with Arthritis, is Now Being Treated with Regenerative Medicine
6. Dr. Farshchian: New treatment on Muscle Atrophy, now available at the Center for Regenerative Medicine
7. Researchers Map Brain Regions Linked to Intelligence
8. Certain Genetic Regions May Be Tied to Osteoporosis
9. Is it time for regional cardiovascular emergency care systems across the US?
10. Cedars-Sinai stroke team earns award for improving regions quality of care
11. Program to coordinate regional systems to speed heart attack care
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/5/2016)... High Falls, NY & Salt Lake City, UT (PRWEB) , ... ... ... Frank Davis, Founder of Activz Whole-Food Nutrition , announced that the much-anticipated feature ... 5th on the New Really Cool Humans Amateur TV Network. , Each week, on ...
(Date:2/5/2016)... ... February 05, 2016 , ... The Muscular Dystrophy Association and ... launched the 14th annual “Appetite for a Cure” campaign on Feb. 1 to ... and related diseases that severely limit strength and mobility. , Now through ...
(Date:2/5/2016)... ... February 05, 2016 , ... Freed-Hardeman University President ... have signed a joint enrollment and degree completion agreement. The agreement, which ... baccalaureate degrees at FHU|Dickson. , The agreement allows students to be jointly ...
(Date:2/5/2016)... ... February 05, 2016 , ... US Sports Camps , official operators ... to direct high-performance kids yoga training. ChildLight Yoga Studio is centrally situated in the ... Boston. , ChildLight Yoga Studio founder Lisa Flynn expresses her excitement, “We are thrilled ...
(Date:2/5/2016)... ... February 05, 2016 , ... Regular gym users know the routine: each January, ... to access the treadmills. It’s a predictable trend. After the excesses of November and ... in shape by joining gyms, starting new walking or running routines, or signing up ...
Breaking Medicine News(10 mins):
(Date:2/4/2016)... NEW YORK , Feb. 4, 2016   Bernstein ... has been filed in the United States District Court for ... of a class (the "Class") consisting of all persons or ... or the "Company") (NASDAQ: INSY ) from March 3, ... charges Insys and certain of its officers with violations of ...
(Date:2/4/2016)... , Feb. 4, 2016 Wegener ... Global Markets Direct,s, ,Wegener Polyangiitis - Pipeline ... Wegener Polyangiitis,s therapeutic pipeline. This report provides ... Polyangiitis, complete with comparative analysis at various stages, ... (MoA), route of administration (RoA) and molecule type, ...
(Date:2/4/2016)... , Feb. 4, 2016 Summary ... common cancer and the most common cancer in women ... the disease exceedingly prevalent. The number of women diagnosed ... decades, but the number of deaths has declined due ... cancer treatment has been revolutionized in the past four ...
Breaking Medicine Technology: