Effects of misoprostrol on pentylenetetrazol-induced seizures in mice Efeitos de misoprostrol sobre convulsões induzidas por pentilenotetrazol em camundongos
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...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Thieme Revinter Publicações
1997-01-01
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| Series: | Arquivos de Neuro-Psiquiatria |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1997000500001 |
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| Summary: | 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.<br>Os efeitos do misoprostrol, um análogo da prostaglandina E, sobre convulsões induzidas por pentilenotetrazol (PTZ) foram estudados em camundongos. Misoprostrol (200-800 mg/Kg) administrado por via subcutânea 45 minutos antes da dose subconvulsiva de PTZ (30 mg/Kg, i.p.) provocou crises tônico-clônicas (30 a 100%) de maneira dose-dependente e mortalidade em camundongos. Na dose de 300 g/Kg, s.c., o pré-tratamento com misoprostrol diminuiu significativamente (p<0,05) o período de latência da primeira convulsão bem como a mortalidade induzida por uma dose convulsiva de PTZ (60 mg/Kg, i.p.). Nesta dose o misoprostrol diminuiu 21 % e 36% os valores de CD50 e de LD50 do PTZ, respectivamente. |
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| ISSN: | 0004-282X 1678-4227 |