Possible Mechanism of Rottlerin Induced Modulation of Ischemia Reperfusion Injury in Isolated Rat Hearts
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- Kaur Kamalpreet
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University
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- Singh Manjeet
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University
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- Singh Nirmal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University
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- Jaggi Amteshwar Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University
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The present study was designed to investigate the modulatory effects of rottlerin on ischemia reperfusion induced myocardial injury. Isolated rat hearts were exposed to 30 min of global ischemia followed by 120 min of reperfusion using Langendorff apparatus. Myocardial injury was assessed in the terms of infarct size, release of lactate dehydrogenase (LDH), creatine kinase (CK) enzymes. Rottlerin, a selective PKCδ inhibitor, did not modulate ischemia-reperfusion (I/R) induced myocardial injury at low dose (3 μM). However, at moderate dose (6 μM) it significantly produced cardioprotective effects. On the contrary, rottlerin at high dose (12 μM) significantly enhanced I/R induced myocardial injury. However, administration of FR-167653 (1.1 μM, 2.2 μM), a selective p-38 mitogen activated protein kinase (p-38 MAPK) inhibitor, attenuated rottlerin (12 μM) mediated enhancement in I/R induced myocardial injury in a dose dependent manner. Per se administration of FR-167653 (1.1 μM, 2.2 μM) also attenuated I/R induced myocardial injury in a dose dependent manner. Pretreatment with rottlerin (6 μM) did not enhance the cardioprotective effects of FR-167653 (2.2 μM). It may be concluded that rottlerin mediated cardioprotective effects at moderate dose, possible due to inhibition of PKCδ; while at high dose it enhanced I/R induced myocardial injury which may be attributed to activation of p-38 MAPK.
収録刊行物
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- Biological & Pharmaceutical Bulletin
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Biological & Pharmaceutical Bulletin 31 (9), 1745-1748, 2008
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390282679600935424
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- NII論文ID
- 110006878962
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- NII書誌ID
- AA10885497
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- ISSN
- 13475215
- 09186158
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- NDL書誌ID
- 9622335
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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