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正常高值血压患者血浆血管活性因子和抗氧化酶的变化及其意义 被引量:4

Increased plasma vasoactive substances and antioxidant enzymes levels in prehypertensive patients
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摘要 目的正常高值血压具有较高的发展成为高血压的危险性。本研究的目的是观察正常高值血压患者血浆中血管活性因子和抗氧化酶的变化,以探讨其在高血压治疗和预防方面的意义。方法根据 JNC-7诊断标准筛选病例并分为三组:正常血压组(NT 组)为74例正常血压健康人,男性38例,女性36例,平均年龄(47.15±7.77)岁;正常高值血压组(PH 组)为51例正常高值血压患者,男性29例,女性22例,平均年龄(47.82±5.16)岁;高血压组(EH 组)为71例原发性高血压患者,男性37例,女性34例,平均年龄(48.25±7.97)岁。抽取静脉血,离心后分别采用放免法和酶联免疫法测定血中的血管紧张素Ⅱ(AngⅡ)、内皮素(ET)、血管加压素(AVP)、降钙素基因相关肽(CGRP)、一氧化氮合成酶(NOS)、超氧化物岐化酶(SOD)和谷胱甘肽过氧化物酶(GPX)等含量。结果与 NT组相比,EH 组和 PH 组血中甘油三酯、总胆固醇和低密度脂蛋白胆固醇水平明显升高(P<0.05);高密度脂蛋白胆固醇在 PH 组中降低,EH 组明显降低(P<0.05);AngⅡ、AVP 和 ET 在 EH 组和 PH 组均增高(P<0.05);CGRP 在 PH 组和 EH 组均下降(P<0.05;P>0.05);NOS 在三组之间无明显的差异;SOD 在 PH 和 EH 组明显下降(P<0.05;P<0.01)而 GPX 明显增高(P<0.05;P<0.01)。结论 PH 患者血中脂类物质、血管活性物质、抗氧化酶出现了异常变化,这会增加患高血压的可能性。为尽可能减少和防止其进展为高血压,应该对 PH 患者进行相应的治疗和控制。 Objective This study investigates the plasma vasoactive substances and antioxidant enzymes levels in prehypertensive patients. Methods Patients were scruited according to JNC-7 and divided into three groups: 74 normotensive subjects (NT group, 38 males, mean age 47. 15 ±7. 77 years old) ; 51 prehypertensive patients (PH group, 29 males, mean age 47. 82 ± 5. 16 years old) and 71 essential hypertensive patients (EH group, 37 males, mean age 48. 25 ±7. 97 years old). Serum lipids and plasma angiotensin Ⅱ ( Ang Ⅱ ), endothelin ( ET), vasopressin ( AVP), calcitonin gene-related peptide ( CGRP), nitric oxide synthase ( NOS ), superoxide dismutase ( SOD ) and glutathione peroxidase ( GPX ) by radioimmunoassay and enzyme linked immnosorbent assay. Results Serum Lipids (TG, CHO and LDL) were significantly higher in the PH and EH groups compared to NT group ( all P 〈 0. 05 ). Ang Ⅱ, AVP and ET were significantly increased while CGRP decreased in the EH group than that in NT group ( all P 〈 0. 05). SOD was significantly lower while GPX significantly higher. Further more, in the PH and EH groups than those in the NT group (all P 〈 0. 05 ). Conclusion SOD was reduced and GPX increased in prehypertensive patients.
出处 《中华心血管病杂志》 CAS CSCD 北大核心 2007年第8期719-722,共4页 Chinese Journal of Cardiology
关键词 高血压 血管活性肽 抗氧化药 Hypertension Vasoactive intestinal peptide Antioxidants
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