Abstract
To evaluate the effects of pretreatment, midazolam (M), propofol (P), ziprasidone (Z), and two combinations of [(midazolam plus propofol (MP); midazolam plus ziprasidone (MZ)] in mice models in the prevention of seizures, and death due to acute cocaine toxicity. 180 male CF-1 mice were randomized to 6 groups (30/group) in this experimental study. The animals were administered intraperitoneal injections of M (2mg/kg), P (25mg/kg), Z (4mg/kg), MP (2mg/kg and 25mg/kg) and MZ (2mg/kg and 4mg/kg) or saline (S) as a pretreatment. 10min later, the mice were administered intraperitoneal injections of 105mg/kg cocaine. The groups were observed for cocaine-induced seizure and lethality. The MP and MZ combinations showed the highest protective effect in terms of seizure and lethality relative to P and S (p<0.001). M and Z were found effective compared to P and S (p<0.001). There were no significant differences among MP and MZ, however there were significant differences between MP and Z in terms of lethality (p=0.05). There were no significant differences among MP, MZ, M and Z groups in terms of seizure (p>0.05). No death was observed in the MP combination group. Seizure rate was observed o be least in the MZ group with respect to the other groups. According to our particular mouse model, this study suggests that MP and MZ combinations may be more effective than M or Z only for the prevention of cocaine-induced seizure and lethality. However, P alone does not prevent cocaine-induced seizure and lethality.
Published Version
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