ABSTRACT
Objectives To assess the effect of nicorandil and trimetazidine on myocardial microcirculation reperfusion in patients with NSTEMI after elective PCI. Methods 80 patients with NSTEMI were randomly assigned to four groups: normal medicine group (CON), nicorandil group (NIC), trimetazidine group (TMZ) and Combination group (NIC+TMZ). The coronary angiography and PCI were performed after 10 days. MCE was taken since 72 hours after operation. Results There were no significant differences in baseline characteristics between the four groups (P > 0.05). The A, β and A ·β of group NIC were significantly higher than group CON (P 0.05). The A,βand A·βof group NIC+TMZ were significantly higher than group NIC or TMZ (P<0.05). Conclusions Nicorandil can improve the situation of myocardial reperfusion after elective PCI in patients with NSTEMI, and it has some synergetic effect when combined with trimetazidine.
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Objective To discuss the changes of plasma TXA2 and PGI2 levels in the rabbit model of pulmonary hypertension (PHA)induced by monocrotaline (MCT)when transplanted with endothelial progenitor cells (EPCs). Methods The rabbit pulmonary hypertension model was constructed by MCT induction. Rabbit endothelial progenitor cells were induced,separated and identified in vitro.50 New Zealand white rabbits were randomly divided into 3 groups,normal control group and model group were given M199 culture medium by tail vein injection,EPCs treatment group were given EPCs marked with fluorescent though tail vein injection. The levels of plasma TXB2 and 6-keto-PGF1αwere detected and their ratio were calculated after three weeks. Results Compared with model group,the content of 6-keto-PGFlαin plasma in EPCs group was (130.67 ±17.54)u mol/L,which was increased sinnificantly. The content of TXB2 was (402.89 ±27.98 )u mol/L,which was decreased significantly.The ratio of TXB2 to 6-keto-PGF1 alpha between two groups was statistically significant(P<0.01 ). Conclusion EPCs transplantation can reduce the content of TXA2 and increase the content of PGI2 in the pulmonary hypertension rabbits induced by monocrotaline,then reverse the damage of pulmonary hypertension.
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Objective To investigate the relationship between serum homocysteine(Hcy)level and endothelial function in patients with coronary heart disease(CHD).Methods A total of 209 patients having undertaken coronary angiography were enrolled in this study.The serum concentrations of homocysteine were investigated for all subjects using fluorescence polarization immunoassay.B-mode ultrasound was used to scan brachial arteries for all subjects at rest and during reactive hyperemia,and then the rates of endothelium-dependent and independent flow-mediated vasodilatation(FMD% and NTG%)of the brachial artery were calculated.Results The values of Hcy in the CHD group were higher than that in the control group(P