[Protective effect of trimetazidine on rabbit myocardium during ischemia- reperfusion].

Abstract

OBJECTIVE:

To investigate the protective effects of trimetazidine on rabbit myocardium in ischemia and reperfusion.

METHODS:

Fourty rabbits were divided into five groups randomly: normal control group, ischemia control group, ischemia and drug intervention group, reperfusion control group, reperfusion and drug intervention group. Ischemia lasted for 30 minutes and reperfusion was given for 30 minutes. Serum CPK, SOD activities and MDA concentrations were measured in each group and ischemia tissue ATP concentrations were also measured. Heart tissue was examined with electron microscope in each group.

RESULTS:

(1) Serum concentrations of MDA in ischemia and drug intervention group were significantly different from those in ischemia control group [(4.09+/-0.40 vs 4.79+/-0.92)nmol/ml, P<0.01], serum activities of CPK [(1322+/-1148 vs 1498+/-190) NU/ml], SOD[(324+/-71 vs 288+/-54)NU/ml] were not significantly different between ischemia and drug intervene group and ischemic control group (PP>0.05,respectively). (2) Serum activities of CPK [(1512+/-226 vs 1904+/-203) NU/ml], SOD[(213+/-71 vs 119+/-55) NU/ml], concentrations of MDA [(6.09+/-0.69 vs 7.43+/-0.20)nmol/ml] and concentrations of ATP[(1.401+/-0.248 vs 0.629+/-0.175) micromol/g] in ischemia heart tissue of reperfusion and drug intervention group were significantly different from those in reperfusion control group (P<0.001 - 0.01 respectively). (3) There were significant differences in electron microscopic observation between intervention group and control group.

CONCLUSION:

Trimetazidine can improve cardiac mitochondrial metabolism and scavenge oxygen free radicals. Trimetazidine has cardioprotective function during ischemia and reperfusion.

• Authors: Jian Wang, Yuan-wei Huang, Jing-han Wei, Tai-xing Wei, Jian-zeng Dong, Jin-ying Zhang
• Journal: Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences (Zhejiang Da Xue Xue Bao Yi Xue Ban) Vol. 32 Issue 3 Pg. 219-22 (06 2003) ISSN: 1008-9292 [Print] China
• PMID: 12881867 (Publication Type: English Abstract, Journal Article)

Chemical References

• Protective Agents
• Malondialdehyde
• Adenosine Triphosphate
• Superoxide Dismutase
• Creatine Kinase
• Trimetazidine

Topics

• Adenosine Triphosphate (analysis)
• Animals
• Creatine Kinase (blood)
• Female
• Male
• Malondialdehyde (blood)
• Mitochondria, Heart (drug effects, ultrastructure)
• Myocardial Reperfusion Injury (prevention & control)
• Protective Agents (pharmacology)
• Rabbits
• Superoxide Dismutase (blood)
• Trimetazidine (pharmacology)