Ischemic preconditioning triggers phospholipase D signaling in rat heart.
Ischemic preconditioning triggers phospholipase D signaling in rat heart.
复制标题
缺血预处理触发大鼠心脏中的磷脂酶 D 信号传导。
DOI:
10.1152/ajpheart.1997.273.4.h1860
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Das,DK
中科院分区:
文献类型:
--
作者:
Tosaki,A;Maulik,N;Cordis,G;Trifan,OC;Popescu,LM;Das,DK
Recent studies have indicated that repeated brief episodes of ischemia and reperfusion render the myocardium more tolerant to subsequent lethal ischemic injury. In view of the previous observations that ischemia-reperfusion potentiates phospholipase D signaling and that such signaling is beneficial for the heart, we investigated whether a similar phospholipase D signaling is responsible for the beneficial effects associated with repeated ischemia and reperfusion. Using an isolated perfused working rat heart model, we demonstrated that four brief episodes of 5 min of ischemia and 10 min of reperfusion reduced the incidence of ventricular arrhythmias, enhanced the postischemic ventricular performance, and decreased the release of creatine kinase from the reperfused heart, with simultaneous activation of phospholipase D generating the second messengers diacylglycerol and phosphatidic acid and leading to the translocation and activation of protein kinase C. The specific antiphospholipase D antibody blocked the activation of phospholipase D and attenuated the generation of diacylglycerol and phosphatidic acid and activation of protein kinase C. In concert, phospholipase D inhibition increased the incidence of ventricular arrhythmias, blocked the beneficial effects of preconditioning on the ventricular performance, and increased the amount of creatine kinase release from the coronary effluent. The results of this study indicate that repeated brief episodes of ischemia and reperfusion exert beneficial effects on the intact rat heart by triggering the activation of a phospholipase D signaling mechanism.
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影响因子:
10.8
作者:
R. Sandhu;R. J. Diaz;G. Wilson
通讯作者:
G. Wilson
影响因子:
3
作者:
Tosaki,A;Cordis,GA;Szerdahelyi,P;Engelman,RM;Das,DK
通讯作者:
Das,DK
DOI:
10.1152/ajpheart.1991.260.3.h877
发表时间:
1991
期刊:
The American journal of physiology
影响因子:
--
作者:
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通讯作者:
Das,DK
影响因子:
20.1
作者:
Zhou,X;Zhai,X;Ashraf,M
通讯作者:
Ashraf,M
影响因子:
37.8
作者:
M. Kitakaze;K. Node;T. Minamino;K. Komamura;H. Funaya;Y. Shinozaki;M. Chujo;H. Mori;M. Inoue;M. Hori;T. Kamada
通讯作者:
T. Kamada