Rasmussen Syndrome and Other Inflammatory Epilepsies

TL;DRAbstract

An underlying immune basis is emerging in an increasing number of epileptic and encephalopathic syndromes. The immunopathological mechanisms may be categorized into antibody-mediated, T-cell cytotoxicity, and microglia-induced degeneration. The immune basis in Rasmussen syndrome is thought to be T-cell mediated. Antibodies to extracellular and intracellular epitopes are implicated in limbic and other encephalitides, characterized by seizures, movement disorder, sleep disorder, obtundation, psychosis, mutism, and other psychiatric symptoms. Extracellular antibodies are directed at cell-surface-expressed neuronal or glial proteins: glutamate receptors (N-methyl-D-aspartate and α-amino-3-hydroxy-5-methyl-4-isoxazol-propionic acid), voltage-gated potassium channel complex (contactin-associated-protein 2 [CASPR2], contactin-2 and leucin-rich, glioma-inactivated 1 [LGI1]), and γ-aminobutyric acid (GABA) receptors (GABABR and GABAAR). Antibodies to intracellular antigens are less commonly see

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