Activated protein C protects myocardium via activation of anti-apoptotic pathways of survival in ischemia-reperfused rat heart.

Abstract:

:Activated protein C (APC) is known to be beneficial on ischemia reperfusion injury in myocardium. However, the protection mechanism of APC is not fully understood. The purpose of this study was to investigate the effects and possible mechanisms of APC on myocardial ischemic damage. Artificially ventilated anaesthetized Sprague-Dawley rats were subjected to a 30 min of left anterior descending coronary artery occlusion followed by 2 hr of reperfusion. Rats were randomly divided into four groups; Sham, I/R, APC preconditioning and postconditioning group. Myocardial infarct size, apoptosis index, the phosphorylation of ERK1/2, Bcl-2, Bax and cytochrome c genes and proteins were assessed. In APC-administrated rat hearts, regardless of the timing of administration, infarct size was consistently reduced compared to ischemia/reperfusion (I/R) rats. APC improved the expression of ERK1/2 and anti-apoptotic protein Bcl-2 which were significantly reduced in the I/R rats. APC reduced the expression of pro-apoptotic genes, Bax and cytochrome c. These findings suggest that APC produces cardioprotective effect by preserving the expression of proteins and genes involved in anti-apoptotic pathways, regardless of the timing of administration.

journal_name

J Korean Med Sci

authors

Ding JW,Tong XH,Yang J,Liu ZQ,Zhang Y,Yang J,Li S,Li L

doi

10.3346/jkms.2010.25.11.1609

subject

Has Abstract

pub_date

2010-11-01 00:00:00

pages

1609-15

issue

11

eissn

1011-8934

issn

1598-6357

journal_volume

25

pub_type

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