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Effects of isopulegol on pentylenetetrazol-induced convulsions in mice: possible involvement of GABAergic system and antioxidant activity.

Abstract：

:The present study investigated the effects of isopulegol, a monoterpene alcohol, in PTZ-induced convulsions and verified possible involved mechanisms. Saline, isopulegol or diazepam were intraperitonealy injected 30 min before PTZ. The latency for development of convulsions and mortality, as well as the mortality protection percentage was recorded. For investigating the involvement of GABAergic system, flumazenil was utilized. The activity of antioxidant enzyme catalase as well as the levels of reduced glutathione and lipid peroxidation were measured in brain hippocampus. Similarly to diazepam, isopulegol significantly prolonged the latency for convulsions and mortality of mice. All animals were protected against mortality at higher dose of isopulegol. Flumazenil pretreatment decreased the prolongation of seizure latency induced by both diazepam and isopulegol, although it was not able to reverse the latency and protection percent for mortality. Isopulegol also significantly prevented PTZ-induced increase in lipid peroxidation, preserved catalase activity in normal levels, and prevented the PTZ-induced loss of GSH in hippocampus of mice. These results suggest that the anticonvulsant and bioprotective effects of isopulegol against PTZ-induced convulsions are possibly related to positive modulation of benzodiazepine-sensitive GABA(A) receptors and to antioxidant properties.

journal_name

Fitoterapia

journal_title

Fitoterapia

authors

Silva MI,Silva MA,de Aquino Neto MR,Moura BA,de Sousa HL,de Lavor EP,de Vasconcelos PF,Macêdo DS,de Sousa DP,Vasconcelos SM,de Sousa FC

doi

10.1016/j.fitote.2009.06.011

subject

Has Abstract

pub_date

2009-12-01 00:00:00

pages

506-13

issue

8

eissn

0367-326X

issn

1873-6971

pii

S0367-326X(09)00141-5

journal_volume

80

pub_type

杂志文章

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