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find Author "ZHAOYongxiong" 1 results
  • Efficacy and aging comparative study of different doses and sources of lamotrigine on cortex convulsive threshold in electrical stimulated rats

    Objective Using cortex convulsions threshold detector and electrical stimulation in rats cortex convulsions threshold model, compare the efficacy and aging of domestic lamotrigine (LTG) and imported LTG. Methods Electrical stimulation convulsions threshold model in rats after stability, 40 rats were randomly divided into A、B、C、D groups,AandBgroup were divided into three different dose groups: domestic LTG low dose (12.5 mg/kg/d), middle dose (25 mg/kg·d), high dose group (37.5 mg/kg·d); imported LTG low doses (12.5 mg/kg·d), middle dose (25 mg/kg·d), high dose group (37.5 mg/kg·d); Carbamazepine middle dose group (72 mg/kg·d); the control group (normal saline 2 ml/time). Recording electrical stimulation in rats cortex convulsions threshold model after administration, compare the differences before and after the administration. Results Three different dose groups of domestic LTG and imported LTG all hadahigher level of electrical stimulation cortex convulsions threshold, and showedadose-response relationship. Onset time of LTG after administration was 1 to 2 hours, peak time was 3 to 4 hours, maintaining time was 8 to 10 hours. Conclusion LTG can improve cortex convulsions threshold in the electrical stimulated rats, there was no significant difference with carbamazepine, and showedadose-response relationship; Repeat dosing for 4 days, both domestic and imported LIG can maintain effective anticonvulsive effect, the efficacy and the aging of two groups of LTG have no significant difference (P>0.05).

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