冠心病患者血清同型半胱氨酸水平与氧化应激的关系研究

Study on the Relationship between Serum Homocysteine Levels and Oxidative Stress in Patients with Coronary Heart Disease

目的：探讨冠心病（coronary heart disease，CHD）患者血清同型半胱氨酸（homocysteine，HCY）水平与氧化应激的关系。方法按照2010年卫生部CHD诊断标准（WS 319～2010），选取2014年6～12月期间入住西安市中心医院的79例CHD患者作为实验组，并选取同期55例健康体检者作为正常对照组。通过检测血清中氧化应激标志物丙二醛（malon-dialhyde，MDA）水平和抗氧化酶超氧化物歧化酶（superoxide dismutase，SOD）活性，对机体氧化应激状态进行分析，再检测血清中 HCY水平，将 HCY水平与 MDA水平及 SOD活性进行相关性分析。结果 CHD组 MDA水平显著高于对照组，而 SOD活性显著低于对照组，差异具有统计学意义（t＝3.112，2.684，均P＜0.05）。CHD组 HCY水平显著高于对照组，差异具有统计学意义（t＝3.268，P＜0.05）。CHD组 HCY水平与 MDA水平呈正相关（r＝0.236，P＜0.05），与 SOD活性呈负相关（r＝－0.221，P＜0.05）。结论 CHD患者血清 HCY水平升高，氧化应激反应增强。氧化应激与血清 HCY水平升高有关，血清 HCY水平升高和氧化应激在CHD发生发展过程中发挥重要作用。

Objective To investigate the relationship between serum homocysteine （HCY）levels and oxidative stress in pa-tients with coronary heart disease （CHD）.Methods According to the diagnostic criteria of CHD in 2010 （WS 319-2010）is-sued by the Ministry of Health,79 patients with CHD in Xi’an Central Hospital from June 2014 to December 2014 were se-lected as the experimental group,and 5 5 cases of healthy physical examination for the same period were selected as the nor-mal control group.The levels of oxidative stress marker malondialdehyde （MDA）and the activity of antioxidant enzyme su-peroxide dismutase （SOD）in serum were detected to analyze the state of oxidative stress.The levels of serum HCY were de-tected,and the correlation between HCY levels and MDA levels and SOD activity was analyzed.Results The levels of MDA in the CHD group were significantly higher than that in the control group,while SOD activity was significantly lower than that in the control group,the differences were statistically significant （t=3.112,2.684,all P〈0.05）.The levels of HCY in the CHD group were significantly higher than that in the control group,the difference was statistically significant （t=3.268,P〈0.05）.In the CHD group,the levels of HCY were positively correlated with the levels of MDA （r=0.236,P〈0.05）,and negatively correlated with SOD activity （r=-0.221,P〈0.05）.Conclusion Serum HCY levels were increased and oxidative stress reaction was enhanced in patients with CHD.Oxidative stress was associated with elevated serum HCY levels.Serum HCY levels and oxidative stress played an important role in the occurrence and development of CHD.