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Granulomatosis with polyangiitis; Other names: Wegener's granulomatosis (WG) (formerly) Micrograph showing features characteristic of granulomatosis with polyangiitis – a vasculitis and granulomas with multi-nucleated giant cells. H&E stain. Specialty: Immunology, rheumatology Causes: Autoimmune disease
In the setting of systemic vasculitis as described above, proliferative nephritis is associated with antineutrophil cytoplasmic antibodies (ANCA). [3] Because of this, an ANCA test should always follow a negative immunofluorescence result to have the highest accuracy for confirming pauci-immune vasculitis-driven proliferative nephritis. [1]
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a necrotizing vasculitis linked to MPO-ANCA or PR3-ANCA that primarily affects small vessels and has few or no immune deposits. AAV is further classified as eosinophilic granulomatosis with polyangiitis, granulomatosis with polyangiitis, and microscopic polyangiitis. [4]
Friedrich Wegener (7 April 1907, Varel – 9 July 1990, Lübeck, [veːɡɐnəɐ̯]) was a German pathologist who is notable for being a high-ranking Nazi physician and for his description of a rare disease originally referred to Wegener disease and now referred to as granulomatosis with polyangiitis. Although this disease was known before ...
ANCA will less commonly form against alternative antigens that may also result in a p-ANCA pattern. These include lactoferrin, elastase, and cathepsin G. [citation needed] When the condition is a vasculitis, the target is usually MPO. [1] However, the proportion of p-ANCA sera with anti-MPO antibodies has been reported to be as low as 12%. [2]
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The disease granulomatosis with polyangiitis (GPA) which used to be called Wegener’s granulomatosis, is one of these small vessel vasculitides. The B-cells release an autoantibody called cytoplasmic antineutrophil cytoplasmic antibody or c-ANCA.
Last month's mid-air collision near Washington, D.C., was the first fatal American commercial air disaster since shortly after 10 p.m. on February 12, 2009, when Colgan Air Flight 3407 fell out of ...