Protective effects of Diemailing Injection on myocardial ischemia-reperfusion injury in rats / 吉林大学学报(医学版)

Objective To observe the protective effects of Diemailing Injection (DMLI) on myocardial ischemia-reperfusion injury in rats. Methods The myocardial ischemia-reperfusion model was induced by 30 min left anterior descending coronary occulusion and 24 h reperfusion in open-chest anesthetized rats. The changes of aspartate aminotransferase (AST), lactate dehydrogenase (LDH), MB isoenzyme of creatine kinase (CK-MB), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) contents in serum, and prostacycline (PGI2) and thromboxane A2 (TXA2) levels in plasma were determined. Results In rats treated by DMLI (with dose of 2. 5, 5 and 10 mL ? kg-1 i. v. at 30 min after coronary occulusion), the myocardial ischemia size (MIS) was significantly reduced, the AST, LDH and CK-MB activities in serum and the TXA2 level in plasma were declined, while PGI2 level in plasma and PGI2/TXA2 ratio were increased significantly. In addition, the LPO content in serum declined, SOD and GSH-Px activities in serum were increased markedly. Conclusion DMLI has protective effects on myocardial ischemia-reperfusion injury through improving free radicals metabolism, decreasing TXA2 level in plasma, increasing PGI2 level in plasma and PGI2/TXA2 ratio.

Experimental and clinical study on diagnosis of acute intestinal ischemia in early stage / 中国普通外科杂志

ObjectiveTo study the diagnostic value of alteration of serum enzyme in acute intestinal ischemia(AII). MethodsChanges of serum levels of CPK, CKMB, LDH, LA, CRP and CO2CP of venous blood of 40 rabbits and 53 patients in different ischemia conditions at different time before and after operation were measured to determine the relationship between the changes and ischemia degree of intestine. ResultsThe serum levels of CPK, CKMB, LDH, LA and CRP increased gradually with the severity of AII and decreased with the improvement of AII, but CO2CP was the reverse.The 6 assay values mentioned above in animals of AII compared with the control group, and in patients in pretreatment compared with the control group, and in reversible intestinal necrosis compared with irreversible intestinal necrosis, and in nonoperation group 1 h after hospitalization compared with reversible intestinal necrosis group 2 h before operation(except CO2CP)all had remarkable difference(P