Immunopathology of Multiple Sclerosis

Aim: Multiple sclerosis (MS) is an immune- mediated disease of the central nervous system. We will emphasize in this article; very different mechanisms, and complex interactions have important role in immunopathology of multiple sclerosis. Main Findings: The pathogenesis of MS is best viewed as a complex interaction between genetically predetermined susceptibility markers and environmental stimuli. MS is charecterized by inflammation, demyelination, apoptosis in oligodendrocytes, remyelination, and axon loss. Immune reaction against different components of the central nervous system (particularly myelin structures) are thought to play an important role in the initiation of the destructive process. The inflammation in MS appears to be caused by an overactive pro-inflammatory TH1 profile in T cells. Demyelination can result as a consequence of direct damage to myelin by inflammatory cells or indirectly because of the enviroment produced by inflammation. Axon loss occurs in MS lesions starting early in the disease. Conclusion: MS occurs with different immünopathological mechanisms.