SOD1 and retinitis pigmentosa 1: The role of SOD (Superoxide dismutase)s in RP (Retinitis pigmentosa) has been extensively studied, with previous studies showing induction of cell death by increased expression of SOD (Superoxide dismutase)2 [67], as well as data showing downregulation of SOD (Superoxide dismutase)1 in the rd10 mouse model [68].