Serum cystatin C levels are associated with coronary artery disease and its severity

ObjectivesSerum cystatin C has been established as a predictor of cardiovascular events. The aim of this study was to evaluate the role of cystatin C in determining the presence and the severity of patients with coronary artery disease (CAD).Design and methodsA total of 936 subjects without overt renal disease were included in this cross-sectional study. Among them were 714 patients with CAD and 222 without based on coronary angiography. Subjects were further divided into four groups according to cystatin C quartile. Serum cystatin C was measured using particle-enhanced immunoassay method. The study analyzed the relationship of cystatin C levels with the presence and severity of CAD, including the number of stenotic vessels involved and Gensini score.ResultsSerum cystatin C levels were significantly higher in patients with CAD than those without (P < 0.001), and significantly increased as the involvement of coronary vessels increased (P < 0.001). The prevalence of CAD and its severity assessed by Gensini score were also significantly greater in the highest quartile of cystatin C (P < 0.001). Moreover, cystatin C levels were independently correlated with the presence of CAD in a multivariate logistic regression model (P = 0.023) and were positively correlated with Gensini score by linear regression analysis (standardized β = 0.083, P = 0.010).ConclusionsElevated serum cystatin C levels were significantly associated with the presence and severity of CAD in patients with normal renal function. It is suggested that cystatin C might play a role in CAD diagnosis and serve as a marker of CAD severity.     

血尿酸与冠心病及其严重程度相关性研究

目的探讨血尿酸(SUA)与冠心病发生及其严重程度的关系以及在不同性别和年龄人群中的差异,为人群预防和临床诊治提供依据。方法根据冠状动脉造影结果将研究对象分为冠心病组396例和非冠心病组792例,根据SUA水平按四分位数将患者分为1~4组,分析不同组间冠心病患病率的差异;以发生病变的血管支数反映冠心病严重程度,分析SUA水平与病变严重程度之间的关系;采用Logistic回归分析SUA水平对冠心病的危险性。结果 (1)冠心病组SUA水平高于非冠心病组,性别分层分析后仅女性组差异仍然存在;年龄分层显示,30~70岁人群中冠心病组SUA水平明显高于非冠心病组。(2)总体、女性及30~70岁人群中,SUA浓度最高组(第4组)的冠心病患病率明显高于其余各组。(3)总体、女性及30~70岁人群中SUA水平与冠状动脉病变支数呈正相关。(4)Logistic回归分析表明,总体、女性及30~70岁人群中SUA水平为冠心病的危险因素。结论 SUA水平与冠心病的患病率有关,且与冠状动脉病变严重程度呈正相关,在女性人群和30~70岁人群中SUA对冠心病及其严重程度的预测价值更大。     

血清骨保护素与冠状动脉病变程度的关系研究

目的探讨血清骨保护素与冠状动脉病变严重程度的关系。方法对70例因胸痛入院的患者均行冠状动脉造影检查,按结果分为正常对照组、单支、双支、多支病变四组,用酶联免疫吸附试验(ELISA)法检测血清骨保护素,同时收集患者的一般临床资料及相应生化指标,并进行多因素Logistic回归等分析。结果与对照组相比,冠状动脉有病变患者血清骨保护素水平明显增加,差异有统计学意义(P<0.001);血清骨保护素水平随冠状动脉病变支数增加明显升高,冠状动脉病变支数越多,血清骨保护素水平升高越明显,差异有统计学意义(P<0.001)。多元回归分析示:骨保护素与血管病变支数独立正相关(P<0.001),Logistic分析示:骨保护素与冠心病独立正相关(OR1.011,95%CI1.006～1.016,P<0.001)。骨保护素与Gensini评分正相关(r=0.623,P<0.001)。结论血清骨保护素水平与冠状动脉疾病的发生、进展及严重程度有直接关系。     

血清补体C3水平与冠状动脉病变的严重程度

目的:观察补体C3与冠状动脉病变程度的关系,为冠状动脉粥样硬化性心脏病(简称冠心病)防治提供应用基础、实验依据。方法:选择2003-09/2004-12清华大学第一附属医院心脏中心的胸痛患者178例,男110例,女68例,平均年龄(65±10)岁。纳入标准:均通过冠状动脉造影确定血管狭窄程度,均对检测项目知情同意。排除标准:有严重感染、结缔组织疾病的患者。①通过冠状动脉造影确定冠状动脉病变严重程度,病变血管分为冠状动脉左主干、前降支、回旋支、右冠状动脉4支,同一血管多处病变以狭窄最严重处计算。冠状动脉病变严重程度的分级根据国外文献的标准,冠状动脉内径狭窄程度小于50%视为正常,评分为0分,1支冠状动脉狭窄程度大于或等于50%评为1分,依次如果有2支、3支或4支冠状动脉内径狭窄大于或等于50%则评为2分、3分或4分。②所有患者于住院后3d内清晨空腹采取静脉血,采用免疫沉淀法测定患者血清补体C3浓度,同时调查其他可能的危险因素,根据本院正常值水平补体C3>1.20g/L视为高补体C3。根据血清补体C3的水平分为高C3组和正常C3组,其中高C3组56例,正常C3组122例。③计量资料如果符合正态分布则以x±s表示,采用t检验,如果不符合正态分布则采用M、max、min表示,采用秩和检验。采用Pearson相关分析,将两支以上冠状动脉病变视为严重病变,赋值为1,将无明显冠状动脉病变赋值为0,采用logistic回归分析进行危险度分析,计算比值比和95%可信区间。结果:胸痛患者178例,均进入结果分析,无脱落者。①单因素分析显示高补体C3患者血清C反应蛋白值和冠状动脉病变严重程度均显著低于正常补体C3患者。②相关分析显示:补体C3与冠状动脉病变严重程度呈负相关,具有统计学意义;补体C3与血清总胆固醇、三酰甘油及低密度脂蛋白呈正相关。③Logistic回归分析显示补体C3对于严重冠状动脉病变比值比为0.197,无统计学意义(P>0.05),未能进入回归方程,吸烟、年龄和C反应蛋白对于严重冠状动脉病变的比值比分别为21.301、1.211和1.112,且P<0.05,有统计学意义。结论:补体C3与冠状动脉病变严重程度相关,但可能不是独立危险因素。     

血清胆红素水平与冠状动脉病变程度的关系

目的研究血清胆红素水平与冠状动脉病变程度的关系，为冠心病（CHD）的预防、治疗探索新思路。方法将116例患者按冠状动脉造影结果分为冠心病组（CHD组）和非冠心病组（非CHD组），检测血清胆红素及冠心病一些重要传统危险因素，比较两组血清胆红素水平差异，对血清胆红素水平与冠状动脉病变程度之间的关系进行双因素及多网素分析，对血清胆红素水平与冠心病传统危险因素进行多因素分析。结果（1）CHD组血清总胆红素（TBIL）、直接胆红素（DBIL）水平低于非CHD组（P〈0．01）。（2）双变量分析显示冠状动脉病变积分（LNCCS）与TBIL和DBIL均呈负相关，相关系数分别为r=0．450（P〈0．01）和r=-0．774（P〈0．01）。（3）多元逐步回归分析显示血清DBIL进入回归方程，LNCCS和DBIL呈负相关。DBIL与LDL、性别、年龄相关，间接胆红素（IBIL）与HDL和LDL相关。结论血清胆红素水平与冠状动脉病变程度呈独立负相关，低血清胆红素水平是冠状动脉粥样硬化的独立危险因素。     

Association between elevated plasma microRNA-223 content and severity of coronary heart disease

Abstract

Bioinformatics indicate that miR-223 regulates many genes associated with cholesterol metabolism, and it could also control high-density lipoprotein-cholesterol (HDL-C) uptake. As reported in previous study, miR-223 was found to be upregulated from human subjects with familial hypercholesterolaemia, however, it remains to be determined using a larger group of coronary heart disease (CHD) patients. Moreover, whether it correlates with severity of atherogenesis, has never been elucidated before. We aim to further explore the association between circulating miR-223 content and severity of CHD. Sample was collected from 300 CHD patients and 100 subjects with angiographic exclusion of CHD. MiR-223 content was detected using quantitative real-time PCR. Gensini score was used to evaluate the severity of coronary stenotic lesions. Expression of miR-223 was identified on basis of the quartiles of the Gensini score, and association between the miRNA and CHD was analyzed. Diagnostic potential of miR-223 of CHD was performed by ROC analysis. CHD patients had higher miR-223 level (13.23, 9.29–17.59 vs. 4.05, 3.06–6.11, p?p?p?相似文献   

白细胞介素6基因启动子区多态性与冠状动脉疾病的相关性研究

目的 探讨白细胞介素6(interleukin 6,IL-6)基因启动子区-174G/C、-572C/G和-634C/G多态性对冠状动脉疾病(coronary heart disease,CHD)的发病易感性.方法 严格按照诊断标准,选取无亲缘关系的CHD患者126例(CHD组)及健康对照组150例提取基因组DNA,应用聚合酶链反应-限制性片段长度多态性(PCR-polymorphism,Restriction Fragment,PCR-RFLP)技术检测-174 G/C、-572 C/G和-634 C/G 3个多态性位点的基因型;采用HaploView4.0及SPSS11.5软件分析各位点基因型、等位基因频率及组间差异.结果 -572C/G位点及-634C/G位点的基因型频率分布在CHD组与正常对照组差异均有统计学意义(P＜0.05),CHD组-572C/G位点的等位基因G频率显著高于正常对照组(P＜0.05),-634C/G位点的等位基因G频率显著高于正常对照组(P＜0.05).连锁不平衡检验结果显示,IL-6基因这3个位点处于不连锁状态,D'＜0.5.结论 IL-6基因-174G/C和-572C/G多态性可能与CHD有关,携带有-572C/G和-634C/G多态性位点G等位基因的个体可能更容易患CHD.     

基质金属蛋白酶-2和超敏C反应蛋白水平与冠状动脉病变程度的相关性

目的探讨基质金属蛋白酶-2(MMP-2)和超敏C反应蛋白(hs-CRP)水平与冠状动脉病变程度的相关性。方法 164例冠状动脉粥样硬化冠心病(CHD)患者分为SAP组51例,UAP组59例,AMI组54例;同时选取冠状动脉造影正常的CHD患者50例作为对照组。检测并比较4组患者MMP-2和hs-CRP水平,并分析MMP-2、hs-CRP水平与Gensini评分的相关性。结果单支病变组、双支病变组和三支病变组患者MMP-2、hs-CRP水平与对照组比较有显著差异(P0.05);不同类型CHD患者MMP-2、hs-CRP水平与对照组比较有显著差异(P0.05);Gensini评分随CHD病情加重而增加(P0.05);各组CHD患者Gensini评分与血清MMP-2和hs-CRP水平呈显著正相关(P0.05)。结论 CHD患者MMP-2和hs-CRP血清水平与冠状动脉粥样硬化数量无关,而与冠状动脉病变严重程度呈显著正相关。     

血浆B型脑钠肽与冠心病患者冠状动脉病变程度的相关性

目的探讨冠心病患者血浆B型脑钠肽(BNP)水平与其冠状动脉病变程度的关系。方法 136例行冠状动脉造影(CAG)检查者,CAG正常者30例作为对照组;冠心病患者106例,根据冠状动脉病变支数分1支、2支、3支病变组分别为38例、36例、32例;按冠状动脉病变类型分A型、B型、C型病变组分别为42例、36例、28例。分析BNP水平在冠状动脉病变不同支数组、不同类型冠状动脉病变组间的关系。结果随着冠状动脉病变支数的增加,BNP明显增高,三支病变组较单支、双支差异有统计学意义(P<0.01);随着冠状动脉病变类型严重程度的增加,BNP明显增高,BNP在冠状动脉病变正常组、A型、B型、C型病变组间两两比较差异均有统计学意义(P<0.05),左心室舒张末期压力(LVEDP)在上述组间两两比较差异均有统计学意义(P<0.01),直线相关回归分析表明BNP水平与Gensini积分存在明显正相关关系(r=0.463,P<0.01)。结论 BNP可反映冠状动脉粥样硬化病变的程度,其能较灵敏地反映左心室功能受损的血流动力学变化。     

内皮型一氧化氮合酶基因多态性与冠心病的关联研究

目的对内皮型一氧化氮合酶(eNOS)基因-786T/C、4a4b、894G/T等3个多态性位点与中国汉族人群冠心病(CAD)发病的相关性进行联合研究。方法 148例中国汉族CAD患者和115例正常对照进行以下遗传学分析:应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)和PCR技术分析2个单核苷酸多态性(SNP)位点即-786T/C和894G/T,以及1个可变串联重复序列(VNTR)位点4a4b,检测各位点基因型和等位基因频率,采用HaploView4.0及SPSS13.0软件经χ2检验比较两组间各位点基因型及等位基因频率的差异。结果 CAD组中eNOS基因-786T/C位点CC基因型频率以及4a4b位点4a/4a基因型频率明显高于对照组,差异有统计学意义(P<0.05)。CAD组和对照组在eNOS基因的894G/T位点等位基因和基因型频率分布均无统计学意义(P>0.05)。结论 eNOS基因-786T/C和4a4b多态性与中国汉族人群CAD存在关联,C等位基因和4a等位基因可能是CAD发病的危险因素。eNOS基因894G/T位点与CAD可能无关联。     

microRNA与冠状动脉粥样硬化性心脏病的相关性研究

目的探讨miR-126,miR-130a,miR-222在冠心病患者外周血浆中的表达水平及其临床意义。方法选择冠心病患者79例（45例轻度组、34例重度组）,冠状动脉阴性对照组24例,收集两组样本临床资料;运用Real-timePCR法检测样本血浆miR-126、miR-130a、miR-222表达水平;分析其表达差异及与脂蛋白a相关性,评估血浆miR-126、miR-130a、miR-222在冠心病中的表达水平及其临床意义。结果（1）与对照组相比,冠心病组患者血浆miR-126和miR-222的表达水平降低和升高,分别是对照组的0．08倍和4．23倍,差异有统计学意义（P〈0．05）：miR-130a表达水平降低,是对照组的0．32倍,但差异无统计学意义（P〉0．05）。（2）以改良Gensini评分对冠心病患者进行亚组分析,冠心病轻度组与重度组miR-126的表达水平分别为对照组的0．15倍及0．004倍,miR-222的表达水平分别为对照组的2．77倍及7．38倍,差异均有统计学意义（P〈0．05）,并且miR-126、miR-222表达水平变化与改良Gensini评分相关。（3）冠心病组中患者Lpa与miR-126、miR-130a、miR-222表达水平均无相关性。结论冠心病患者外周血浆中miR-126、miR-222表达水平较冠状动脉阴性对照组有显著差异,且表达水平变化与冠状动脉狭窄程度密切相关。     

Plasma levels of myeloperoxidase are not elevated in patients with stable coronary artery disease

BACKGROUND: Plasma and serum levels of myeloperoxidase (MPO), a redox-active hemoprotein released by polymorphonuclear neutrophils (PMN) upon activation, is now recognized as a powerful prognostic determinant of myocardial infarction in patients suffering acute coronary syndromes. However, there is limited information on whether systemic MPO levels are also elevated and of discriminating value in patients with stable coronary artery disease (CAD) representing different ethnic groups. METHODS: Plasma levels of MPO and traditional CAD risk factors were quantified in African American and Caucasian patients (n=557) undergoing elective coronary angiography. RESULTS: MPO levels did not differ significantly between patients with or without CAD [421 pM (321, 533) vs. 412 pM (326, 500), p>0.05]. MPO levels were similar across ethnicity and gender, and correlated positively with CRP and fibrinogen levels (r=0.132, p=0.002 and r=0.106, p=0.011, respectively). CONCLUSION: In conclusion, plasma MPO levels were not elevated in patients with stable CAD, suggesting that systemic release of MPO is not a characteristic feature of asymptomatic CAD.     

脉压、收缩压与冠状动脉病变程度相关性研究

目的 探讨冠心病患者脉压（PP）、收缩压（SBP）与冠状动脉病变程度相关性。方法选择心内科行冠状动脉造影的患者241例,根据冠状动脉造影结果分为冠状动脉狭窄组（n=135）与非冠状动脉狭窄组（n=106）。比较冠状动脉狭窄组与非冠状动脉狭窄组以及不同病变支数患者的血压参数。分析各血压参数与冠状动脉狭窄发生率的关系,各血压参数与冠状动脉病变程度的相关性。结果 ①冠状动脉狭窄组冠状动脉狭窄评分、年龄、收缩压、脉压显著高于非冠状动脉狭窄组（P〈0．05～0．01）,且年龄、冠状动脉狭窄评分、SBP、PP随着狭窄支数的增加而逐渐增高,尤其以3支病变患者更为显著（P〈0．05）。而DBP低于非冠状动脉狭窄组（P〈0．05）。且随着狭窄支数的增加有逐渐降低趋势,但没有统计学意义（P〉0．05）。②Pearson直线相关分析：年龄、糖尿病史、吸烟、SBP、PP、总胆固醇、低密度脂蛋白胆固醇与冠状动脉病变支数、冠状动脉狭窄记分呈正相关（r分别为：0．325,0．241,0．227,0．385,0．517,0．087,0．053,P〈0．05～0．01）。③多因素Logistic逐步回归分析：SBP、PP、年龄、糖尿病史、吸烟与冠状动脉3支病变的发生有相关性（OR分别为：1、283,1．787,1．535,1、950,1．779,P〈0．05）。④多元线性回归分析显示：年龄、SBP、PP、吸烟、与冠状动脉狭窄记分呈正相关（β=0．301,1．955,0．107,0．240,P〈0．05～0．01）。结论 PP、SBP增高,冠状动脉狭窄性病变的发生率增加,冠状动脉狭窄程度加重。冠状动脉狭窄程度与PP、SBP呈正相关,PP是冠状动脉病变程度的独立预测因子。     

Association of CCR2 polymorphisms with the number of closed coronary artery vessels in coronary artery disease

Coronary artery disease (CAD) is one of the most common forms of heart disease. It has been demonstrated that chemokine-mediated inflammation is associated with the development of CAD. In this study, in order to determine the role of CCR2, a receptor for MCP-1, in the development of CAD, we initially sequenced and identified the genetic variants of CCR2 using 24 unrelated Korean individuals' DNA samples. A total of 13 genetic variants, including 1 deletion and 12 SNPs, were identified in the Korean population. Although we could not detect any association of CCR2 polymorphic markers with CAD, several SNP markers of CCR2 gene showed highly significant signals with the number of arteries with significant coronary artery stenosis in the CAD male patients. The most significant signal was detected at the SNP located at exon 2 (+780T>C, Asn260Asn) CI: 1.19-1.87, P=0.0005 (odds ratio: 1.49, 95% CI: 1.19-1.87, p=0.0005) (Table 3). This result indicates that CCR2 can play a role in the pathogenesis of CAD, especially to the number of vessels in CAD.     

冠心病患者血清游离脂肪酸、氧化脂蛋白(a)与冠状动脉病变程度的关系

目的分析冠心病(CAD)患者血清游离脂肪酸(NEFA)和氧化脂蛋白(a)[ox-Lp(a)]水平,探讨CAD患者该两种指标的关系,并评估其与冠状动脉病变狭窄程度的关系。方法选取急性冠状动脉综合征(ACS)患者56例、稳定性冠心病(SCAD)患者62例和健康对照者71例;测定血清NEFA和ox-Lp(a)水平,同时分析血脂水平、冠状动脉病变支数和Gensini积分。结果与健康人对照组相比,血清ox-Lp(a)(t=4.91,P0.01)和NEFA(t=7.77,P0.01)水平在CAD患者中均升高,且ACS患者ox-Lp(a)(t=2.84,P0.01)、NEFA(t=4.22,P0.01)水平高于SCAD患者。CAD患者中,冠状动脉多支病变组血清ox-Lp(a)(t=2.52,P=0.014)、NEFA(t=3.21,P0.01)水平高于单支病变组。CAD患者血清ox-Lp(a)(r=0.193,P0.05)和NEFA(r=0.322,P0.01)水平均与Gensini积分呈正相关。多元线性回归分析显示,冠状动脉病变支数和血清NEFA水平共同决定了Gensini积分34.6%的变化(β分别为0.497和0.225,P均0.01)。多因素Logistic回归分析显示,在校正了年龄、性别和其他血脂水平的影响后,血清高NEFA、ox-Lp(a)水平与ACS[ox-Lp(a),OR=1.159,95%CI=1.075~1.250,P0.01;NEFA,OR=1 118.185,95%CI=78.979~15 831.200,P0.01]、SCAD[ox-Lp(a),OR=1.082,95%CI=1.010~1.158,P0.05;NEFA,OR=65.007,95%CI=5.628~750.837,P0.01]的发生密切相关,且对ACS、SCAD的鉴别具有显著意义[ox-Lp(a),OR=1.072,95%CI=1.013~1.134,P0.05;NEFA,OR=17.201,95%CI=3.741~79.091,P0.01]。结论 CAD患者血清NEFA、ox-Lp(a)水平升高,且ACS患者NEFA、ox-Lp(a)水平高于SCAD患者;血清NEFA、ox-Lp(a)水平与冠状动脉病变狭窄程度密切相关。     

老年冠心病患者肾功能减低与严重冠状动脉病变的关系

目的:探讨老年冠心病患者肾功能减低与冠状动脉病变严重程度的关系。方法:219例经冠状动脉造影确诊且未合并原发肾脏疾病的老年冠心病患者,以简化MDRD公式计算肾小球滤过率,依据冠状动脉造影结果判断冠状动脉病变严重程度。结果:104例(47.5%)患者肾功能减低,其中慢性肾脏疾病患者37例(16.9%);严重冠状动脉病变患者117例(53.4%)。严重冠状动脉病变患者肾小球滤过率明显减低(P<0.05)。肾小球滤过率<70mL/(min.1.73m2)为严重冠状动脉病变的最强预测因子(P<0.05)。既往高血压病史、合并糖尿病、低密度脂蛋白胆固醇>2.6mmol/L及低高密度脂蛋白胆固醇也是严重冠状动脉病变的独立预测因素。结论:合并肾功能下降是老年冠心病患者发生严重冠状动脉病变的独立危险因素,其预测价值超过传统冠心病危险因素。     

冠状动脉3支病变与颈动脉狭窄程度之间的关系

背景: 以往的研究显示随着冠状动脉严重程度的增加, 颈动脉狭窄的发生率和严重程度也增加。与白种人比较, 中国脑卒中的患者以颅内的小动脉病变居多而颅外颈动脉病变相对少见。目的: 观察存在冠状动脉 3 支病变患者的颈动脉和颅内动脉受累情况。设计: 观察性实验。单位: 首都医科大学附属北京朝阳医院神经内科; 首都医科大学附属北京朝阳医院心脏中心。对象: 选择 2003- 08/2004- 08 于首都医科大学附属北京朝阳医院神经内科门诊就诊和住院的疑诊为冠状动脉硬化性心脏病的患者行冠状动脉造影, 对其中发现 3 支病变的 126 例患者同时进行颈动脉造影检查。其中男 56 例, 女 70 例; 年龄 47～76 岁。纳入对象均对检测项目知情同意。方法: 126 例患者行冠状动脉造影后即刻行动脉数字减影血管造影。常规应用 Seldinger 技术穿刺股动脉插管, 多角度投照, 同时观察双侧颈动脉, 锁骨下动脉和椎动脉。面积狭窄百分比由数字减影血管造影机图像后处理站直接计算获取。根据颈动脉造影结果为判定标准将患者分为正常、轻度狭窄、中度狭窄、重度狭窄和颈动脉闭塞。主要观察指标: 患者颈动脉的狭窄程度。结果: 纳入的 126 例冠状动脉硬化性心脏病患者全部进入结果分析。颈动脉轻度、中度、重度和闭塞的患者比例相当, 分别为 13 (10.32%), 18(14.29%), 12 (9.50%), 和 10 (7.90%)。冠状动脉 3 支病变合并颈动脉异常的比例为 42.06%。结论: 中国人群中冠状动脉 3 支病变同时合并颈动脉狭窄的发生率与西方人同样很高。冠状动脉 3 支病变的人群中, 颈动脉狭窄的发生率高于颅内动脉。冠状动脉 3 支病变的人应该接受颈动脉的造影检查。