九种中药多糖含药血清对小鼠腹腔巨噬细胞释放细胞因子的影响

目的 研究黄芪等中药多糖干预小鼠免疫功能的部分机制.方法 常规提取黄芪、防风、当归、柴胡、枸杞、地黄、板蓝根、蒲公英、香菇等9味中药多糖组分,分别按大、中、小剂量灌胃给药,制备小鼠含药血清;选择浓度为20％的含药血清干预体外培养的小鼠腹腔巨噬细胞(Mφ),并用酶联免疫吸附法(ELISA)检测Mφ释放白细胞介素(IL)-1β、IL-6、IL-8、肿瘤坏死因子(TNF)-α等细胞因子(CK)的水平.结果 除柴胡多糖外,其余8种中药多糖含药血清对IL-1β、IL-6、IL-8、TNF-α中一个或多个CK水平具有明显升高或降低作用(P＜0.05或P＜0.01),且具有浓度差异性(P ＜0.05或P＜0.01).结论 黄芪等8味中药调节机体免疫功能的机制,可能与这些中药的多糖组分在体内干预巨噬细胞释放IL-1β、IL-6、IL-8、TNF-α等CK有关.     

阻塞性睡眠呼吸暂停低通气综合征患者血清维生素D水平的变化及其临床意义

目的观察阻塞性睡眠呼吸暂停低通气综合征（OSAHS）患者血清维生素D的表达水平,探讨维生素D在OSAHS引起2型糖尿病中所起的作用。方法选取单纯OSAHS患者27例,轻度组9例,中度组8例,重度组10例;OSAHS合并2型糖尿病患者14例;单纯2型糖尿病患者14例;单纯肥胖者墙例。均行整夜多导睡眠监测（PSG）及空腹血糖（FPG）、糖化血红蛋白（HbAlc）测定,ELISA法检测外周血血清维生素D水平,了解血清维生素D在OSAHS患者糖代谢紊乱中的作用。结果①与肥胖对照组相比,糖尿病组、OSAHS组、合并组血清维生素D水平明显降低（P〈0．05）;合并组血清维生素D明显低于糖尿病组（P〈0．05）;②维生素D与BMI、AHI、HbAlc、FPG呈负相关（r=-0．309,-0．516,-0．421,-0．458,均P〈0．05）,与最低血氧饱和度（SaO2min）呈正相关（r：0．349,P〈0．05）。结论OSAHS可引起血清维生素D水平降低,其可能在OSAHS致糖代谢异常中起重要作用。     

冠心病患者血尿酸水平与冠状动脉病变程度的相关性分析

目的:探讨血清UA水平与冠状动脉病变严重程度的关系。方法:回顾性分析2011年6月至2012年6月,在我科住院行冠状动脉造影检查者408例。根据造影结果,分为冠状动脉正常组和冠心病组,并根据SYNTAX评分,将冠心病组分为低危组(1～22分)、中危组(23～32分)及高危组(>33分)。测定空腹UA水平、空腹血脂:包括TC、TG、HDL-C及LDL-C。比较各组患者血脂、血UA水平。男性UA以<416μmol/L为正常值,女性以<357μmol/L为正常值,再将患者分为高UA组和正常UA组,比较两组SYNTAX评分,并进行相关性分析。结果:SYNTAX评分高危组、中危组与正常组比较TC、LDL-C显著增高,而正常组、低危组间差异无统计学意义(P>0.05)。SYNTAX评分高危组、中危组与同性别冠状动脉正常组比较,血UA水平显著增高。正常UA组与高UA血症组在年龄、性别、TC、TG、HDL-C及LDL-C的差异无统计学意义(P>0.05)。高UA血症组患者的冠状动脉SYNTAX评分显著高于正常血UA组。多元Logistic回归分析表明血UA水平与冠状动脉病变程度相关。结论:血UA是冠状动脉病变严重程度的相关危险因素,随着血UA水平的增高,冠状动脉病变程度增加。     

2型糖尿病合并非酒精性脂肪性肝病患者血清视黄醇结合蛋白4水平变化及影响因素的研究

目的 研究T2DM合并非酒精性脂肪性肝病（NAFLD）患者血清视黄醇结合蛋白4（RBP4）水平变化.方法 选取单纯T2DM患者（T2DM） 32例,T2DM合并NAFLD者（T2DM＋NAFLD）31例及正常对照（NC）者34名,测定血清RBP4水平,并计算胰岛β细胞功能指数（HOMA-β）及葡萄糖处置指数（DI）.结果 与其他两组比较,T2DM＋ NAFLD组血清RBP4水平最高（P＜0.05或P＜0.01）,而DI最低（P均＜0.01）.且TG、WC、SBP、DI是RBP4的独立影响因素（P均＜0.05）.RBP4是T2DM合并NAFLD独立危险因素（OR=1.142,P=0.057）.结论 血清RBP4在T2DM＋NAFLD组最高,与胰岛β细胞功能密切相关.     

2型糖尿病患者中血尿酸相关基因的基因间相互作用分析

目的 探讨T2DM患者中SUA与相关基因的关联及交互作用.方法 纳入1574例T2DM患者,采用基质辅助激光解吸电离飞行时间质谱技术对56个基因的86个SNP位点进行基因分型,运用PLINK软件进行关联分析及基因型交互作用分析.结果 在T2DM患者中ABCG2（rs2231142）、PKHD1（rs9395706）、PDGFB（rs2285094）、LPHN3 （rs6856526）及MC4R（rs17782313）基因的多态性与SUA水平相关（P＜0.05）.同时,有6组基因存在交互作用（P＜0.001）.结论 ABCG2、PKHD1、PDGFB、LPHN3及MC4R基因的多态性与T2DM患者SUA水平相关.     

The evolving view of coronary artery calcium and cardiovascular disease risk

Calcification of the coronary artery is a complex pathophysiologic process that is intimately associated with atherosclerosis. Extensive investigation has demonstrated the value of identifying and quantifying coronary artery calcium (CAC) in atherosclerotic cardiovascular disease (CVD) prognostication. However, over the last several years, an increasing body of evidence has suggested that CAC has underappreciated aspects that modulate, and at times attenuate, future CVD risk. The most commonly used measure of CAC, the Agatston unit, effectively models both higher density and higher area of CAC as risk factors for future CVD events. Recent findings from the Multi‐Ethnic Study of Atherosclerosis (MESA) have challenged this assumption, demonstrating that higher density of CAC is protective for coronary heart disease and CVD events. Statins may be associated with an increase in CAC, an unexpected finding given their clear benefits in the prevention and treatment of CVD. Studies utilizing intracoronary ultrasound and coronary computed tomography angiography have demonstrated that calcified atherosclerotic plaque—as compared with noncalcified or sparsely calcified plaque—is associated with fewer CVD events. These studies lend support to the often‐asserted (but as yet unvalidated) view that calcification may play a role in plaque stabilization. Furthermore, vascular calcification, though a surrogate for atherosclerotic plaque burden, may also possess identifiable aspects that can refine CVD risk assessment.     

Prognostic value of serial serum KL-6 measurements in patients with idiopathic pulmonary fibrosis

Background

The prognostic significance of serial measurements of serum KL-6 levels in patients with idiopathic pulmonary fibrosis (IPF) is unclear; hence, it was assessed in this study.