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Core Facilities

Advanced Magnetic Resonance Center Imaging Facility

Animal Models Core Facility

BIACORE

Clinical Immunology
Laboratory

Crystallography

Myositis Testing

DNA Sequencing

Flow Cytometry

Imaging Core Facility

Microarray Research
Facility

Signal Transduction
Core Facility

Shared Facilities

Laboratory Animal
Resource Center (LARC)

Institutional Animal
Care and Use
Committee (IACUC)

Another type of autoimmune disease attacks the muscles of the body. The "myositis-specific antibodies" (MSA) can assist in the diagnosis of polymyositis and dermatomyositis in those patients who have the diseases. About 50% of patients with polymyositis or dermatomyositis have specific MSA or myositis associated antibodies (MAA). MSA are almost never found in patients without myositis, even if they have other muscle diseases of autoimmune diseases. This means that when the physician's examination and initial testing suggests the possibility of polymyositis or dermatomyositis, a positive test for an MSA can be strong supporting evidence for the diagnosis.

For a long time the testing for these antibodies was only available in research studies, but it is now possible to obtain this testing clinically. The Myositis Profile, performed at the OMRF Clinical Immunology Laboratory, includes tests for 12 of the MSAs and MAAs. Additional antibodies may be detectable using this profile.  Dr. Ira Targoff is the consultant to the Clinical Immunology Laboratory regarding this testing. As with the Reichlin Profile for lupus, patients with a particular antibody may have distinctive clinical pictures with certain associated problems. Identifying certain antibodies can help characterize the condition more fully. Research continues in our lab, and others around the world, to determine the nature of the relationship between the various MSAs and polymyositis and dermatomyositis.

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For more information regarding the OMRF Clinical Laboratory please call Mary Jones at (405) 271-7395, or the laboratory staff at (405) 271-7771.