Effects of misoprostrol on pentylenetetrazol-induced seizures in mice

• Autor(a) principal: Medeiros,Francisco das Chagas
• Data de Publicação: 1997
• Outros Autores: Medeiros,Maria Angelina, Rao,Vietla Satyanarayna, Figueiredo,Eberval Gadelha
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivos de neuro-psiquiatria (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1997000500001
• topic: seizures; pentylenetetrazol; misoprostol; mice

The effects of prostaglandin E - analogue misoprostol on the susceptibility to pentilenetetrazol(PTZ) - induced seizures were examined in mice. Misoprostol (200-800 mg/kg), given subcutaneously 45 min before the subconvulsive dose of PTZ (30 mg/kg, i.p) provoked dose-dependent clonic-tonic seizures (30 to 100%) and mortality in mice. At 300 g/kg, s.c, misoprostol pretreatment significantly (p<0.05) lowered the onset latency to first convulsion as well as the latency to mortality induced by a convulsive dose of PTZ (60 mg/kg, i.p.). At this dose misoprostol was found to lower the CD50 and Ld50 values for PTZ by 21 % and 36% respectively. The results suggest that prostaglandins are likely to lower the threshold for convulsions.