Effects of U50,488H on L-type calcium current in the normal and hypoxic rat ventricular myocytes / 解放军医学杂志
Article
en Zh
| WPRIM
| ID: wpr-555296
Biblioteca responsable:
WPRO
ABSTRACT
Objective To explore the nechanism of the interaction between K-opioid receptor and ? adrenal receptor. Method The effects of u50 488H on L-type calcium currents in the normal and hypoxic rat ventricular myocytes were studied by using whole-cell patch clamp technique. Results The basal as well as Isoproterenol-stimulated I_ Ca,L were inhibited by U50,488H in a dose-dependent manner in normal rat ventricular myocytes. In the hypoxic rat ventricular myocytes,the inhibitory effect of U50,488H was decreased. U50,488H had no significant effect on Forkolin-stimulated I_ Ca,L . Conclusion The results indicated that the negative modulation of ?-opioid receptor on ?-adrenoceptor was attenuated in the hypoxic ventricular myocytes,and the target of U50,488H on ?-adrenergic system might be situated between ?-adrenoceptor and adenylate cyclase.
Texto completo:
1
Base de datos:
WPRIM
Idioma:
Zh
Revista:
Medical Journal of Chinese People's Liberation Army
Año:
2001
Tipo del documento:
Article