冠心病患者氧化还原态状态及瑞舒伐他汀对患者氧化还原状态的影响研究
2017-12-20黄彦生李晓娟肖兆良杨媛媛李静宇贺素媛刘煜昊
黄彦生 李晓娟 肖兆良 杨媛媛 李静宇 贺素媛 刘煜昊
(河南省人民医院 河南 郑州 450003)
·论著·
冠心病患者氧化还原态状态及瑞舒伐他汀对患者氧化还原状态的影响研究
黄彦生 李晓娟 肖兆良 杨媛媛 李静宇 贺素媛 刘煜昊
(河南省人民医院 河南 郑州 450003)
目的探讨冠心病患者氧化还原态状态及瑞舒伐他汀对患者氧化还原状态的影响。方法选择2015年12月至2017年3月河南省人民医院心内科收治的冠心病患者496例为冠心病组,选择同期接受冠状动脉造影检查结果正常者498例为对照组,按照随机数表法将冠心病组患者分为两组,各248例,分别在常规治疗基础上接受瑞舒伐他汀和依折麦布治疗12周。测定对照组受试者及冠心病组患者治疗前后血浆还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)与氧化型烟酰胺腺嘌呤二核苷酸磷酸(NADP+)水平,并根据Nernst方程计算NADPH/NADP+的氧化还原电位。结果冠心病组患者血浆NADPH水平低于对照组,NDPN+水平高于对照组,NADPH/NADP+氧化还原电位高于对照组,差异均有统计学意义(P<0.05),且患者氧化还原状态向氧化方向偏移。治疗12周后,瑞舒伐他汀组NADPH高于治疗前,NADP+低于治疗前,NADPH/NADP+氧化还原电位低于治疗前,差异有统计学意意义(P<0.05),且患者氧化还原状态向还原方向偏移;依折麦布组患者治疗后3项指标与治疗前相比,差异无统计学意义(P>0.05)。结论冠心病患者NADPH/NADP+氧化还原电位高,且氧化还原状态向氧化方向偏移,瑞舒伐他汀能够纠正冠心病患者的电位失衡状态。
冠心病;还原型烟酰胺腺嘌呤二核苷酸磷酸;氧化型烟酰胺腺嘌呤二核苷酸磷酸;氧化还原状态;瑞舒伐他汀
氧化还原态平衡是机体内环境稳定的基本内涵之一,近年来受到广泛的研究与关注;研究发现,冠状动脉粥样硬化性心脏病发生、发展与机体氧化还原态密切相关[1]。但目前对冠心病患者氧化还原态的研究甚少。本研究主要通过测定冠心病患者治疗前后及健康受试者体内NADPH及NADP+水平,旨在探讨冠心病患者氧化还原态状态及瑞舒伐他汀对患者氧化还原状态的影响。具体如下。
1 资料与方法
1.1研究对象选择2015年12月至2017年3月河南省人民医院心内科收治的冠心病患者496例为冠心病组,所有患者均已经临床表现、心电图、心肌标志物及介入冠状动脉造影检查确诊,且冠状动脉粥样硬化狭窄程度≥50%,排除急性冠脉综合征患者;选择同期接受冠状动脉造影检查结果正常者498例为对照组[2]。按照随机数表法将冠心病组患者分为瑞舒伐他汀组和依折麦布组,各248例。冠心病组和对照组受试者及瑞舒伐他汀组和依折麦布组患者一般资料比较,差异无统计学意义(P>0.05)。
1.2检测和治疗方法测定对照组受试者及冠心病组患者治疗前后血浆还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)与氧化型烟酰胺腺嘌呤二核苷酸磷酸(NADP+)水平,并根据Nernst方程计算NADPH/NADP+的氧化还原电位。
1.2.1检测方法 采集研究对象清晨空腹静脉血2 ml,放入预冷肝素(125 U/0.2 ml)抗凝管中,试管保存于冰水混合物中待测。采用荧光光度法进行进行还原型烟酰胺腺嘌呤二核苷酸磷酸(nicotinamide adenine dinucleotide phosphate reduced form,NADPH)和氧化型烟酰胺腺嘌呤二核苷酸磷酸(nicotinamide adenine dinucleotide phosphate oxidized form,NADP+)水平的测定[3],并按照Nernst方程计算NADPH和NADP+氧化还原电位,Eh=EO+(RT/2F)×ln[(NADP+)/(NADPH)],其中R为气体常数,T为绝对温度,F为法拉第常数,EO为NADP+/NADPH的标准电位值[4]。
1.2.2药物治疗 两组患者均接受硝酸酯类、β受体阻滞剂、钙离子拮抗剂、阿司匹林、ACEI及ARB等常规药物治疗。瑞舒伐他汀组患者在常规治疗基础上加用瑞舒伐他汀(托妥,南京正大天晴制药股份有限公司)治疗,10 mg/次,1次/d,睡前口服;依折麦布组患者在常规治疗基础上接受依折麦布(益适纯,杭州默沙东公司)治疗,10 mg/次,1次/d,晨起口服。两组患者均连续治疗12周。
2 结果
2.1受试者氧化还原状态冠心病组患者血浆NADPH水平低于对照组,NDPN+水平高于对照组,NADPH/NADP+氧化还原电位高于对照组,差异均有统计学意义(P<0.05),且患者氧化还原状态向氧化方向偏移。见表1。
表1 两组受试者氧化还原状态比较
注:与对照组比较,aP<0.05。
2.2两组患者氧化还原状态治疗12周后,瑞舒伐他汀组NADPH高于治疗前,NADP+低于治疗前,NADPH/NADP+氧化还原电位低于治疗前,差异有统计学意义(P<0.05),且患者氧化还原状态向还原方向偏移;依折麦布组患者3项指标治疗后与治疗前相比,差异无统计学意义(P>0.05)。见表2。
表2 治疗前后患者氧化还原状态变化情况
注:于治疗前相比,bP>0.05;与治疗前相比,cP<0.05。
3 讨论
研究发现,冠状动脉粥样硬化性心脏病的发生、发展与机体氧化还原态密切相关,可能与体内的氧化还原态能够影响基因的转录、酶和生物大分子的活性、细胞和器官的功能,以及细胞的增殖、分化、凋亡等许多生理、病理生理过程有关[5]。还原性的维生素(如维生素C等)在临床已被用于动脉粥样硬化的治疗,但研究结果显示,维生素C对动脉粥样硬化的预防、治疗效果并不理想,推测其原因可能与患者体内的氧化还原态是一个动态平衡,不考虑患者体内氧化还原态而给予患者同一治疗量的维生素C,不能矫正所有动脉粥样硬化患者体内的氧化还原态偏移有关[6]。
烟酰胺腺嘌呤二核苷酸磷酸,又称辅酶Ⅱ,有氧化型(NADP+)和还原型(NADPH)两种形式,是体内一个重要的氧化还原对[7],同时也是体内多种还原酶的重要辅助因子,在许多代谢反应中发挥递氢作用,提供还原当量[8]。机体的氧化还原状态亦受NADPH/NADP+的调节,血浆中NADPH/NADP+电位水平亦是反映机体氧化还原态的一项重要指标[9]。本研究显示冠心病患者血浆中NADPH水平降低,NADP+水平升高,NADPH/NADP+电位升高,且向氧化方向偏移。与上述理论研究一致。
作为冠心病基础治疗药物的瑞舒伐他汀,除具有调脂作用外,还具有更多抗动脉粥样硬化益处[10]。本研究通过观察冠心病患者接受瑞舒伐他汀和降胆固醇药物依折麦布治疗后患者体内氧化还原态的影响,研究结果显示,瑞舒伐他汀组NADPH水平升高、NADP+水平降低,NADPH/NADP+电位降低,向还原方向偏移;而依折麦布治疗12周后NADPH、NADP+、NADPH/NADP+电位均无显著变化,研究结果说明,瑞舒伐他汀能够纠正冠心病患者的电位失衡状态。
综上所述,冠心病患者NADPH/NADP+氧化还原态失衡,且电位方向向氧化方向偏移,瑞舒伐他汀能够纠正冠心病患者的电位失衡状态。
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Studyofoxidation-reductionstateofthepatientswithcoronaryheartdiseaseandtheeffectsofrosuvastatinontheoxidation-reductionstateofpatients
Huang Yansheng, Li Xiaojuan, Xiao Zhaoliang, Yang Yuanyuan, Li Jingyu, He Suyuan, Liu Yuhao
(HenanProvincialPeople’sHospital,Zhengzhou450003,China)
ObjectiveTo investigate the oxidation-reduction state of the patients with coronary heart disease and the effects of treatment with rosuvastatin on the oxidation-reduction state of patients.MethodsFour hundred and ninety-six patients with coronary heart disease who were treated in Henan Provincial People’s Hospital as CHD group and and 496 normal controls from December of 2015 to May of 2017 were enrolled in this study. All patients in CHD group were randomly divided into two groups, 248 cases in each group, and patients in these two groups were treated with rosuvastatin and ezetimibe for 12 weeks respectively. The levels of nicotinamide adenine dinucleotide phosphate reduced form(NADPH) and nicotinamide adenine dinucleotide phosphate oxidized form(NADP+) of all the subjects were tested, and the two indicators of CHD patients were tested before and after treatment. The redox-potential of NADPH/NADP+was calculated based on the Nernst equations.ResultsCompared with control group, the level of NADPH was significantly lower, the level of NADP+and the redox-potential of NADPH/NADP+were significantly higher in CHD group(P<0.05), and the standard potential of patients was shifted in the oxidation direction. Rosuvastatin could evidently enhance the level of NADPH, lower the level of NADP+and the redox-potential of NADPH/NADP+after 12 weeks of treatment(P<0.05), and the standard potential of patients was shifted in the reduction direction. However, the levels of the three indicators in ezetimibe group was unchanged after treatment(P>0.05).ConclusionThe redox-potential of NADPH/NADP+of CHD patients was high. The standard potential of CHD patients was shifted in the oxidation direction, and the imbalance of potential could be corrected by rosuvastatin.
coronary heart disease; nicotinamide adenine dinucleotide phosphate reduced form; nicotinamide adenine dinucleotide phosphate oxidized form; oxidation-reduction state; rosuvastatin
河南省科技攻关计划项目(编号132102310211)。
刘煜昊,E-mail: camsliu@163.com。
R 541
10.3969/j.issn.1004-437X.2017.22.001
2017-09-08)