重叠综合征患者肺动脉压力与血管内皮功能的研究

目的:探讨重叠综合征(OS)患者肺功能、睡眠呼吸参数和肺动脉压力的变化以及肺动脉压力与血管内皮功能的相关性。方法:收集2009年2月至2012年1月我院呼吸科诊断的慢性阻塞性肺疾病(COPD)、阻塞性睡眠呼吸暂停低通气综合征(OSAHS)和OS患者各60例,分别测定患者肺功能、睡眠呼吸参数、平均肺动脉压力(mPAP)、血清内皮素1(ET-1)、一氧化氮(NO)和血管内皮生长因子(VEGF)水平。结果:OS组与单纯COPD组和OSAHS组相比,第1秒用力呼气容积(FEV1)(%预测值)、FEV1/用力肺活量(FVC)和快速眼动相睡眠(REM)占总睡眠时间百分比(%)均明显降低(P<0.05);而睡眠呼吸暂停低通气指数(AHI)、Epworth嗜睡量表(ESS)评分和mPAP明显增高(P<0.05);OS患者血清中ET-1和VEGF浓度明显高于单纯COPD和单纯OSAHS患者(P<0.05),并与其mPAP呈正相关,而NO浓度显著降低,与mPAP呈负相关。结论:OS患者较单纯的COPD和OSAHS患者更易合并肺动脉高压,外周血ET-1、VEGF和NO的浓度与肺动脉压力有一定的相关性。     

The role of low-grade inflammation in the polycystic ovary syndrome

PCOS is not only the most frequent cause of oligomenorrhea in young women, but also a metabolic disorder characterized by insulin resistance, glucose intolerance, dyslipidemia, and obesity, especially the visceral phenotype. PCOS represents a broad spectrum of endocrine and metabolic alterations which change with age and with increasing adiposity. In fact, during adolescence and youth the predominant clinical manifestations of PCOS are menstrual abnormalities, hirsutism and acne, whereas in peri-menopausal and post-menopausal periods metabolic disorders and an increased risk for cardiovascular diseases prevail. The pathogenetic links between PCOS and metabolic or cardiovascular complications are still debated. However, recent evidence has been focused on a condition of low-grade chronic inflammation as a potential cause of the long-term consequence of the syndrome.