Effect of hydrogen sulfide on rat cardiac function in vitro / 中国病理生理杂志
Chinese Journal of Pathophysiology
;
(12)1986.
Artigo
em Chinês
| WPRIM
| ID: wpr-524091
ABSTRACT
AIM:
To observe the effect of hydrogen sulfide (H_2S) on the rat cardiac function in vitro, to explorer the physiological regulation of endogenous H_2S on myocardial action.METHODS:
H_2S concentration and production in the rat myocardial tissues were detected. The expression of CSE (a kind of key enzyme of endogenous H_2S production) mRNA in myocardial tissues was screened by RT-PCR. Langendorff apparatus was used to perfuse the rat heart in vitro. After 20 minutes of stabilization, NaHS (10~-6 -10~-3 mol/L) were added cumulatively in order to the perfusive fluid, and another group applied physiological concentration NaHS (4?10~-4 mol/L), continuously perfusion for 20 min, heart rate (HR), difference of left ventricular pressure (△LVP), left ventricular peak rate of contraction (+LV dp/dt_~max ), peak rate of relaxation (-LV dp/dt_~max ) and coronary perfusive flow (CPF) were measured at the times. Finally, glibenclamide was applied to block the K_~ATP channel of heart, to observe the effect of NaHS at physiological concentration on cardiac function.RESULTS:
NaHS concentration-dependently inhibited left ventricular ?dp/dt_~max and △LVP (P
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Journal of Pathophysiology
Ano de publicação:
1986
Tipo de documento:
Artigo
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