The Effect of Papaverine on L-Type Ca2+ Current in Rat Basilar Smooth Muscle Cells
Journal of Korean Neurosurgical Society
; : 161-165, 2002.
Article
em Ko
| WPRIM
| ID: wpr-93600
Biblioteca responsável:
WPRO
ABSTRACT
OBJECTIVE:
Papaverine has been used to manage vasospasm after subarachnoid hemorrhage. However, its mechanism for cerebrovascular smooth muscle are still not clear. This study was undertaken to investigate the effect of papaverine on L-type Ca2+ channels directly by using patch clamp techniques in freshly isolated single smooth muscle cells from rat basilar artery.METHODS:
Whole-cell patch clamp technique was used for measuring the amplitude of L-type Ca2+ current. Papaverine was added to the bath solution.RESULTS:
Patch clamp studies revealed a whole-cell current which resembles the L-type Ca2+ current reported by others. The amplitude of this current was decreased by nimodipidine and increased by Bay K 8644. Papaverine 100 micro M reduced the amplitude of the L-type Ca2+ channel current.CONCLUSION:
We can conclude that papaverine may relax cerebral vessel through decreasing level of intracellular calcium, [Ca2+]i, by inhibition of L-type Ca2+ channel.Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Papaverina
/
Hemorragia Subaracnóidea
/
Artéria Basilar
/
Banhos
/
Éster Metílico do Ácido 3-Piridinacarboxílico, 1,4-Di-Hidro-2,6-Dimetil-5-Nitro-4-(2-(Trifluormetil)fenil)
/
Cálcio
/
Técnicas de Patch-Clamp
/
Miócitos de Músculo Liso
/
Músculo Liso
Limite:
Animals
Idioma:
Ko
Ano de publicação:
2002
Tipo de documento:
Article