Anti-Jo1

Anti-Jo1 is an autoantibody that is often present in the blood of individuals with certain autoimmune diseases, such as polymyositis and dermatomyositis. It is named after the antigen it targets, which is known as Jo-1.

Overview

Anti-Jo1 is the most common autoantibody found in people with idiopathic inflammatory myopathies (IIMs), a group of conditions that cause inflammation and weakness in the muscles. It is present in up to 30% of these cases. The presence of Anti-Jo1 is often associated with a distinct set of clinical features known as the Anti-Synthetase Syndrome.

Anti-Synthetase Syndrome

Anti-Synthetase Syndrome is characterized by muscle inflammation (myositis), joint inflammation (arthritis), fever, Raynaud's phenomenon, and interstitial lung disease. The presence of Anti-Jo1 is used as a marker for this syndrome.

Diagnosis

The presence of Anti-Jo1 is detected through a blood test. It is one of several autoantibodies that can be screened for when diagnosing conditions like polymyositis and dermatomyositis.

Treatment

Treatment for conditions associated with Anti-Jo1 typically involves managing the symptoms and reducing inflammation. This can include the use of corticosteroids, immunosuppressants, and physical therapy.

See Also

• Autoimmune disease
• Polymyositis
• Dermatomyositis
• Anti-Synthetase Syndrome

Anti-Jo1 Resources
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