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Updated: Aug 17, 2026
Improved Rodent Model of Myocardial Ischemia and Reperfusion Injury
Published on: March 7, 2022
Myocardial ischemia/reperfusion-induced oxidative renal damage in rats: protection by caffeic acid phenethyl ester
Mehmet Kaya Ozer1, Hakan Parlakpinar, Nigar Vardi
1Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey. mkozer1971@yahoo.com
Abstract:
Myocardial ischemia-reperfusion (MI/R) may induce renal damage. A rat model of M/IR injury was established. The left coronary artery was clamped for 30 min, constituting the ischemic period, and was then released for 120 min, thus constituting the reperfusion period. The purpose of this study was to evaluate the effects of caffeic acid phenethyl ester (CAPE), an antioxidant, on renal dysfunction in rats undergoing MI/R. CAPE (50 mumol/kg) was administered by infusion 10 min before ischemia and during occlusion. Hemodynamic changes were recorded during the different periods. At the end of the reperfusion period, rats were sacrificed, and the kidneys were quickly removed for biochemical determination and histopathological analysis. MI/R was accompanied by a significant increase in malondialdehyde (MDA) production and decrease in glutathione (GSH) content in the rat kidney. Administration of CAPE reduced MDA production and prevented depletion of GSH content. These beneficial changes in these biochemical parameters were also associated with parallel changes in histopathological appearance. These findings imply that MI/R plays a causal role in kidney injury through overproduction of oxygen radicals or insufficient antioxidant, and CAPE exerts renal-protective effects probably by its radical scavenging and antioxidant activities.
Insights
Caffeic acid phenethyl ester (CAPE) protects kidneys from damage caused by myocardial ischemia-reperfusion (MI/R) injury. CAPE reduces oxidative stress by scavenging free radicals, preserving kidney function.
Area of Science:
- Cardiovascular Research
- Nephrology
- Pharmacology
Background:
- Myocardial ischemia-reperfusion (MI/R) is a significant clinical event that can lead to secondary kidney damage.
- Oxidative stress, characterized by an imbalance between free radicals and antioxidants, is a key mechanism in MI/R-induced organ injury.
Purpose of the Study:
- To investigate the renoprotective effects of caffeic acid phenethyl ester (CAPE) in a rat model of MI/R injury.
- To elucidate the underlying mechanisms of CAPE's action, focusing on its antioxidant properties.
Main Methods:
- A rat model of myocardial ischemia-reperfusion was established by occluding the left coronary artery for 30 minutes followed by 120 minutes of reperfusion.
- Rats were treated with caffeic acid phenethyl ester (CAPE) prior to and during ischemia.
- Renal function was assessed by measuring biochemical markers of oxidative stress, including malondialdehyde (MDA) and glutathione (GSH), and through histopathological examination.
Main Results:
- MI/R injury significantly increased kidney malondialdehyde (MDA) levels and decreased glutathione (GSH) content, indicating elevated oxidative stress.
- Administration of CAPE markedly reduced MDA production and prevented the depletion of GSH in the kidneys of MI/R rats.
- Histopathological analysis revealed that CAPE treatment mitigated the kidney damage observed in the MI/R group.
Conclusions:
- Myocardial ischemia-reperfusion induces kidney injury, at least in part, through the overproduction of reactive oxygen species or inadequate antioxidant defense.
- Caffeic acid phenethyl ester (CAPE) demonstrates significant renal-protective effects in the context of MI/R injury.
- The renoprotective properties of CAPE are likely attributed to its potent radical scavenging and antioxidant activities.
