[Neurological involvement in Wegener's granulomatosis]

Kunihiko Asakura, Tatsuro Muto
Brain and Nerve, Shinkei Kenkyū No Shinpo 2013, 65 (11): 1311-7
Abstract Wegener's granulomatosis is a rare autoimmune disease associated with granulomatous inflammation and anti-neutrophil cytoplasmic antibody (ANCA)-associated small vessel vasculitis. Following the discovery of ANCA, ANCA-associated vasculitis is established as a disease entity of Wegener's granulomatosis, microscopic polyangiitis, and Churg-Strauss syndrome. Clinical and experimental studies have provided evidences that myeloperoxidase (MPO) and proteinase 3 (PR3), which are major antigenic targets for ANCA in neutrophils, are not only disease markers but also involved in the pathogenesis. In addition, recent studies have revealed another potential antigen for ANCA, lysosomal-associated membrane protein-2 (LAMP-2). Though nervous system manifestations of Wegener's granulomatosis are less frequent than classical manifestations in the lungs and kidneys, 20-50% of patients demonstrate neurological involvements. Peripheral nervous system involvement (in generalized Wegener's granulomatosis) is more frequent than central nervous system (CNS) involvement. Multiple mononeuropathy and multiple cranial neuropathy are the most prevalent symptoms. CNS manifestations include cerebrovascular events, pachymeningitis, seizures, and reversible posterior leukoencephalopathy syndrome. Here we discuss the pathogenic mechanism of ANCA and review the literature regarding neurological involvement in Wegener's granulomatosis.

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