Protective effects of probucol against glutamate-induced cytotoxicity in neuronal cell line PC12

The sympathetic nerve cell line PC12 is reportedly destroyed by glutamate in a concentration-dependent manner. In this study, cytotoxicity induced by 10 mM glutamate was blocked in a dose-dependent manner by incubating or pre-incubating cells with the antioxidant probucol (1-50 microM). Probucol also inhibited the increase in cellular thiobarbituric acid-reacting substances induced by glutamate exposure. These results suggest that the propagation of cellular lipid peroxidation may be related to glutamate-induced toxicity in PC12 cells.