Behçet's disease pathophysiology

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hamid Qazi, MD, BSc [2], Mahda Alihashemi M.D. [3]


It is understood that Behçet disease is the result of vasculitis. It involves all sizes of blood vessels ( small, medium, and large). Arteries and veins are both involved in Behçet disease. Major mechanisms in pathogenesis of Behçet disease include environmental factors such as bacteria, viruses, and heat shock proteins (present in some bacteria and some of the bacterial HSPs share similaritis with human HSPs). Streptococcus sanguinis, streptococcus pyogenes, and mycobacterium tuberculosis produce HSPs that trigger anti HSP60 and anti HSP65 antibodies and then they target human HSPs and immune response such as uveitis in parenchymal neuro-Behçet disease, CD4+ T cells activation, secretion of cytokines and inflammation. Genes involved in the pathogenesis of Behçet disease include human leukocyte antigens, particularly HLA-B51.




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