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超敏C反应蛋白水平与血压昼夜波动程度的关系

Association between blood pressure variation and a level of high sensitive C-reactive protein in the elderly

摘要:

目的 探讨血浆C反应蛋白水平与血压昼夜波动程度的关系. 方法入选高血压患者82例,正常血压者79例.采用免疫荧光色谱法检测血浆超敏C反应蛋白水平,同时用24 h动态血压仪监测入选者血压水平和血压变异性.采用多元线性回归,校正年龄、性别、体质指数、血糖、血脂、吸烟史、基线血压等各影响因素,分析C反心蛋白水平与血压昼夜波动的关系. 结果 (1)高血压组白天、夜间和24 h收缩压变异性均高于对照组(P<0.01、P<0.01和P<0.05),舒张压变异性亦高于对照组(均为P<0.05),而夜间收缩压、舒张压和平均动脉压下降率均低于对照组(分别为P<0.01、P<0.05和P<0.05);(2)高血压组血浆C反应蛋白高于对照组分别为(5.44±1.78)mg/L与(3.03±0.72)mg/L,差异有统计学意义(P<0.01);(3)高血压组白天、夜间和24 h 3个时段的舒张压变异性均与C反应蛋白水平呈正相关(分别为r=0.492,P<0.001;r=0.240,P=0.048;r=0.271,P=0.030).多元线性回归分析结果显示,上述3个时段的舒张压变异性对C反应蛋白水平具有预测作用(r=0.660,决定系数R2=0.436;回归模型F=11.597,P<0.001).(4)正常血压组各时段的血压变异性与C反应蛋白水平无相关性. 结论高血压患者血压变异性、血浆C反应蛋白水平均显著高于正常血压患者,而夜间血压下降率低于正常血压者,且高血压患者血浆C反应蛋白水平与昼夜血压的波动程度,特别是舒张压的波动程度密切相关.

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abstracts:

Objective To explore the association between CRP and circadian variation of blood pressure in both hypertensive and normotensive old population.Methods The 82 patients with essential hypertension (EH) and 79 normotensive adults were enrolled in this study. Serum high sensitive CRP (hsCRP) level was tested by fluorescence immunoassay technology. The 24-hour ambulatory monitor of the level and variability of blood pressure was carried out. Multivariable linear regression models were run to adjust the age, gender, body mass index, blood sugar, blood fat,smoking history and baseline blood pressure for analyzing the association between hsCRP and circadian variation of blood pressure.Results ( 1 ) The variability of systolic blood pressure during daytime,nighttime and 24-h our periods were higher in EH group than in control group (P<0.01 or P<0. 05), the variabilities of diastolic blood pressure were also significantly higher than in control group (P<0. 05), the dipping ratios of nocturnal systolic, diastolic and mean artery pressure were all less than in contrast group (all P<0.05). (2) The hsCRP was obviously higher in EH group than in control group [(5.44± 1.78)mg/L vs. (3.03±0. 72) mg/L, P<0. 01]. (3) The hsCRP had positive associations with diastolic blood pressure variability during daytime (r= 0. 492, P<0. 001 ), nighttime (r=0.240, P=0.048), and 24-hour (r=0.271, P=0.030). The variability in diastolic blood pressure predic ted the level of hs CRP(r=0.660, R2=0.436, P<0.001). (4) In control group, no significant association was found between CRP and variation of blood pressure.Conclusions The BP variability and serum CRP in EH patients are obviously higher than in normotensive patients,however, the nocturnal BP dipping ratio is less than in normotensive patients. Furthermore, the level of serum hsCRP in EH patients is positively associated with the variation of blood pressure, especially for variation of diastolic blood pressure.

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作者: 李剑 [1] 孙宝玲 [1] 杨光敏 [2] 谢玉婷 [2] 茅娟 [2] 高敦民 [1]
期刊: 《中华老年医学杂志》2011年30卷1期 27-30页 ISTICPKUCSCD
分类号: R3
DOI: 10.3760/cma.j.issn.0254-9026.2011.01.007
发布时间: 2011-03-07
基金项目:
上海浦东新区医学领先人才培养计划优秀学科带头人培养资助 上海浦东新区科技发展创新基金资助攻关项目
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