目的通过检测中重度阻塞性睡眠呼吸暂停低通气综合征患者应用nCPAP(持续气道正压通气)前后体内晚期氧化蛋白产物(advanced oxidative protein product,AOPP)及VitE水平的变化,来探讨应用nCPAP对血AOPP和VitE水平的影响及体内氧化应激和...目的通过检测中重度阻塞性睡眠呼吸暂停低通气综合征患者应用nCPAP(持续气道正压通气)前后体内晚期氧化蛋白产物(advanced oxidative protein product,AOPP)及VitE水平的变化,来探讨应用nCPAP对血AOPP和VitE水平的影响及体内氧化应激和炎症反应的变化。方法随机选择OSAHS患者40例,随机分为对照组及夜间应用nCPAP无创呼吸机的患者(nCPAP组)各20例,所有入选者在夜间入睡前及晨起抽取空腹肘静脉血,用改良Witko-Sarsat法[3]测定AOPP水平,比色法测定Vit E。结果对照组患者晨起较睡前AOPP水平明显升高,nCPAP组患者晨起较睡前AOPP浓度下降,与对照组相比,晨起AOPP水平明显下降,差异有统计学意义(P<0.05)。VitE组间及组内比较差别均无统计学意义。结论中重度OSAHS患者应用nCPAP可降低血AOPP水平,减轻氧化应激及炎症反应,预防心脑血管疾病发病。展开更多
Advanced oxidation protein products （AOPPs）, as a novel indicator of oxidative stress, are thought to be involved in aging-related diseases. The excessive AOPPs were served as independent risk factor for coronary ar...Advanced oxidation protein products （AOPPs）, as a novel indicator of oxidative stress, are thought to be involved in aging-related diseases. The excessive AOPPs were served as independent risk factor for coronary artery disease （CAD）, atherosclerosis and carotid intima media thickness, which mainly through hypoxia inducible factor- l OL （HIF-Iot） and vascular endothelial growth factor （VEGF） pathway. Paeoniflorin, a monoterpene glycoside, ex- erts well protective effect in vascular as its good antioxidant property. However, there is no research that has reported whether Paeoniflorin has the protective effect on oxidative damage induced by AOPPs in HUVECs, and also it is little known about this underlying mechanism. The protective effect of Paeoniflorin on oxidative damage induced by AOPPs was investigated in HUVECs. The cell viability was assessed by MTT colorimetric assay. The fluorescence intensity of 2＇, 7＇-dichlorofluorescein-diacetate （DCFH-DA） staining was detected for intracellular reactive oxygen species （ROS） production. And mitochondrial membrane potential （MMP） was measured byflow cytometry and confocal mi- croscopy staining with Mito Tracker Deep Red/ MitoTracker Green. The intracellular adenosine triphosphate （ATP） was measured by ATP Determination Kit. Nox2, Nox4, HIF-lα, VEGF and NF-KB p65 protein expressions were detected by western blot. The results showed that AOPPs significantly decreased MMP and ATP in a dose-de- pendent manner. Furthermore, AOPPs increased HW-1α, VEGF protein expression, and also partly increased NF-KB p65 expression may through increase of ROS production by up-regulations of Nox2, Nox4 and RAGE expression in HUVECs. These effects were remarkably reversed by pre-treatment of Paeoniflorin, which indicated that Paeoniflorin inhibited Nox2/Nox4 expression, restored ATP depletion and mitochondria dysfunction via ROS suppression, and down-regulated HIF-lα/VEGF possibly via ROS-NF-KB axis. In conclusion, these results suggesting that Paeoniorin had a protective effect against AOPP-induced oxidative damage in HUVECs and that HIF-lα/VEGF might be inter- vention site in this process.展开更多
文摘目的通过检测中重度阻塞性睡眠呼吸暂停低通气综合征患者应用nCPAP(持续气道正压通气)前后体内晚期氧化蛋白产物(advanced oxidative protein product,AOPP)及VitE水平的变化,来探讨应用nCPAP对血AOPP和VitE水平的影响及体内氧化应激和炎症反应的变化。方法随机选择OSAHS患者40例,随机分为对照组及夜间应用nCPAP无创呼吸机的患者(nCPAP组)各20例,所有入选者在夜间入睡前及晨起抽取空腹肘静脉血,用改良Witko-Sarsat法[3]测定AOPP水平,比色法测定Vit E。结果对照组患者晨起较睡前AOPP水平明显升高,nCPAP组患者晨起较睡前AOPP浓度下降,与对照组相比,晨起AOPP水平明显下降,差异有统计学意义(P<0.05)。VitE组间及组内比较差别均无统计学意义。结论中重度OSAHS患者应用nCPAP可降低血AOPP水平,减轻氧化应激及炎症反应,预防心脑血管疾病发病。
文摘Advanced oxidation protein products （AOPPs）, as a novel indicator of oxidative stress, are thought to be involved in aging-related diseases. The excessive AOPPs were served as independent risk factor for coronary artery disease （CAD）, atherosclerosis and carotid intima media thickness, which mainly through hypoxia inducible factor- l OL （HIF-Iot） and vascular endothelial growth factor （VEGF） pathway. Paeoniflorin, a monoterpene glycoside, ex- erts well protective effect in vascular as its good antioxidant property. However, there is no research that has reported whether Paeoniflorin has the protective effect on oxidative damage induced by AOPPs in HUVECs, and also it is little known about this underlying mechanism. The protective effect of Paeoniflorin on oxidative damage induced by AOPPs was investigated in HUVECs. The cell viability was assessed by MTT colorimetric assay. The fluorescence intensity of 2＇, 7＇-dichlorofluorescein-diacetate （DCFH-DA） staining was detected for intracellular reactive oxygen species （ROS） production. And mitochondrial membrane potential （MMP） was measured byflow cytometry and confocal mi- croscopy staining with Mito Tracker Deep Red/ MitoTracker Green. The intracellular adenosine triphosphate （ATP） was measured by ATP Determination Kit. Nox2, Nox4, HIF-lα, VEGF and NF-KB p65 protein expressions were detected by western blot. The results showed that AOPPs significantly decreased MMP and ATP in a dose-de- pendent manner. Furthermore, AOPPs increased HW-1α, VEGF protein expression, and also partly increased NF-KB p65 expression may through increase of ROS production by up-regulations of Nox2, Nox4 and RAGE expression in HUVECs. These effects were remarkably reversed by pre-treatment of Paeoniflorin, which indicated that Paeoniflorin inhibited Nox2/Nox4 expression, restored ATP depletion and mitochondria dysfunction via ROS suppression, and down-regulated HIF-lα/VEGF possibly via ROS-NF-KB axis. In conclusion, these results suggesting that Paeoniorin had a protective effect against AOPP-induced oxidative damage in HUVECs and that HIF-lα/VEGF might be inter- vention site in this process.
