Objective:To explore the protective effect of ischemic postconditioning on myocardium during emergency percutaneous coronary intervention (PCI) in patients with ST segment elevation myocardial infarction (STEMI) . Methods:According to different treatment method ,a total of 82 STEMI patients ,who hospitalized in the depart-ment of Cardiology of Affiliated Hospital of Guangxi Medical University from Jan 2011 to Dec 2012 and received PCI within 12h ,were divided into ischemic postconditioning group (n= 42) and pure reperfusion group (n= 40) . Heart function etc .were evaluated in both groups .Results:Compared with pure reperfusion group ,there were sig-nificant rise in complete ST segment resolution rate (55.0% vs .81.0% ) and left ventricular ejection fraction [ (0.5 ± 0.1) vs .(0.7 ± 0.1)] ,significant reductions in arrhythmia rate (60.0% vs .21.4% ) ,wall motion score index [WMSI ,(2.0 ± 0.7) scores vs .(1.3 ± 0.6) scores] ,myocardial infarction size [MIS ,(15.1 ± 7.1)% vs .(9.9 ± 5.3)% ] ,radionuclide myocardial perfusion defect extent score [ES ,(0.4 ± 0.1)% vs .(0.2 ± 0.1)% ] and severity score [SS ,(2.3 ± 1.1)% vs .(1.8 ± 1.2)% ] in ischemic postconditioning group ,P<0.05~ <0.01 .Conclusion:Is-chemic postconditioning can significantly improve extent of myocardial ischemia reperfusion injury and protect myo-cardial tissues in STEMI patients .

Objective To study the correlation between the cytochrome P450 3A5 gene polymorphism and essential hypertension (EH) in Chinese population .Methods The real-time PCR genotyping at CYP3A5*3(6986A>G) position was established using Taqman minor groove binding (MGB) probes .Total 170 EH patients and 193 matched controls of Chinese Han population were genotyped at CYP3A5*3(6986A>G) position using this method .Results The GG ,GA ,AA genotyped frequencies were 51 .2% , 42 .4% and 6 .5% for the EH patients and 39 .9% ,50 .8% and 9 .3% for the control group respectively .The risk of EH for person carrying GG genotype was 1 .579 fold of the persons carrying at least one A allele(95% CI:1 .041-2 .395) .Conclusion CYP3A5*3(6986A>G) polymorphism may be associated with EH in Chinese population .The risk of EH is decreased in the persons carrying allele A ,slightly lower levels of systolic blood pressure exists .