Anti-Jo-1 antibody (antisynthetase or overlap myositis)
Автор: Muhannad Muhammad
Загружено: 31 окт. 2023 г.
Просмотров: 278 просмотров
Anti-Jo-1 antibody is a myositis specific autoantibody most commonly found in patients with idiopathic inflammatory myopathies (IIM). This antibody is directed against the histidyl-tRNA synthetase which catalyses the binding of the histidine to its cognate tRNA during protein synthesis. It can be considered a specific marker of IIM, predominantly found in 20-30% of patients with PM and in the 60-70% of those with interstitial pulmonary fibrosis. These antibodies are also found in DM, although less frequently than in PM, and are rare in children with PM or DM and in other connective tissue diseases.

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