高分子脂联素、富含半胱氨酸的酸性分泌蛋白与冠心病的临床及预后分析
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摘要
[背景]
     对于冠心病潜在危险因素的探讨一直以来都是心血管病学领域研究的热点之一,而对脂肪细胞因子的研究则是热点中的焦点。已有研究表明,总脂联素(total adiponectin TAPN)作为一种脂肪细胞因子,对于冠心病的发生、发展具有一定的保护作用,高分子脂联素(hign molecular weight adiponectin HMWAPN)作为TAPN的一种亚型,是其发挥生物学活性的主要成分。目前对于冠心病的预测和预后,脂联素是最有潜力的脂肪因子,但学术界关于脂联素各亚型,尤其是HMWAPN与冠心病相关性及其预后的研究所得出的结论并非一致。富含半胱氨酸的酸性分泌蛋白(Secreted protein and riched in cysteine SPARC)也新渐被人们认识到与冠心病之间有一定的关系,但国内外均未见较大规模的临床研究。
     [目的]
     探讨血清TAPN、HMWAPN水平及两者之比值(hign molecular weight adiponectin/total adiponectin H/T ratio)和SPARC水平与冠心病患者传统危险因素、冠状动脉病变严重程度以及主要心脑血管不良事件(main adverse cardiovascular cerebral vascular events MACCE)之间的关系。
     [方法]
     研究对象为以2007年7月至2009年5月之间于北京协和医院因临床疑诊冠心病,住院行冠脉造影检查的北京地区患者,共收集503例,其中对明确诊断冠心病的患者(共449例)进行临床随访,随访截止日期2012年12月。住院期间,收集患者的一般情况、包括冠心病危险因素以及既往相关疾病史等;采集空腹静脉血检测血糖、血脂、超敏C反应蛋白(hsCRP)、肌酐清除率(Creatinine clearance Ccr)、 TAPN、HMWAPN及SPARC等有关指标,评估研究对象的左室射血分数(Left ventricular ejection fraction LVEF),每一个研究对象均行冠状动脉造影检查,并进行Gensini积分、改良Gensini积分、弥漫积分等冠脉病变的定量评估:随访冠心病患者MACCE的发生情况,包括心源性死亡、靶血管再血管化(Target Vessel Revascularization TVR)、随访期间发生的急性冠脉综合征(acute coronary syndromeACS)(包括不稳定心绞痛和急性心肌梗死)、脑卒中或者一过性脑缺血、心功能恶化。总结随访结果,分别分析TAPN、HMWAPN. H/T ratio、SPARC与冠心病各危险因素及冠脉病变严重程度之间的关系;并探讨TAPN、HMWAPN. H/T ratio、 SPARC与冠心病患者预后(发生MACCE)之间的关系。
     [结果]
     1、平均随访时间为54.44±5.7个月,随访期间发生MACCE的总人数为178例,发生率为39.6%。与第一次随访(2010年3月)结果相比,心源性死亡、靶血管再血管化、脑卒中增长率较高,分别达到了212.5%、116.7%和120.0%。
     2、脂联素与冠心病:(1)男性冠心病人群中,血脂异常组的HMWAPN、TAPN水平显著低于正常组(p<0.05或0.01),而在女性冠心病人群中,各亚组之间的HMWAPN、TAPN水平及H/T ratio无显著差异(p>0.05)。(2)相关性分析显示在男性冠心病人群中,HMWAPN、TAPN与冠心病危险因素的数目、肌酐清除率、体重指数呈负相关(P<0.05或0.01),而在女性冠心病人群中,HMWAPN、TAPN水平及H/T ratio与各临床指标无明确相关(p>0.05)。(3) COX回归分析发现:在男性冠心病人群中,低水平的HMWAPN (p=0.022, RR=1.656)及H/Tratio (p=0.002,RR=2.048)是发生MACCE的独立危险因素。在女性冠心病人群中,低水平的HMWAPN(p=0.004, RR=2.832)、TAPN(p=0.003, RR=2.802)是发生MACCE的独立危险因素。(各个指标第一个3分位间距为低水平组)
     3. SPARC与冠心病:(1)相关性分析发现:血清SPARC水平与超敏C反应蛋白、Gensini积分、改良的Gensini积分、弥漫积分呈正相关(p<0.05),多重线性回归分析发现,血清SPARC是影响冠脉Gensini积分的独立因素。(2) COX回归分析发现:血清SPARC水平与冠心病人群发生MACCE之间不具有相关性p=.146).(SPARC第3个3分位间距为高水平组)
     [结论]
     1、随着随访时间的延长,心源性死亡、靶血管再血管化及心功能恶化的比例在冠心病病人总MACCE中比例逐渐提高。
     2、男性冠心病人群中MACCE的发生与HMWAPN和]H/T ratio水平降低独立相关,而与TAPN不相关,提示HMWAPN具有保护作用,这种保护作用独立于冠心病传统危险因素的影响。HMWAPN水平的降低可作为男性冠心病患者预后不良的预测指标。
     3、女性冠心病人群中MACCE的发生与TAPN. HMWAPN水平降低独立相关,而与H/T ratio不相关,提示TAPN和HMWAPN都起保护作用,这种保护作用也独立于冠心病传统危险因素影响;TAPN和HMWAPN水平降低是影响女性冠心病病人预后的评价指标。
     4、SPARC水平与冠状动脉狭窄的严重程度相关,提示可能在冠状动脉粥样硬化的形成及进展过程中起一定的作用,对于冠心病以及病变严重程度具有早期预警的作用。冠心病患者总MACCE的发生与SPARC水平无明显相关性,但对于ACS及心功能恶化的发生,可能具有一定的提示作用。
[Background]
     Investigating potential risk factors of coronary artery disease (CAD) has been an emerging hot spot in the filed of cardiology. While focus of which is the study of adipocytokins. As a kind of adipocytokins,numerous researches suggested that total adiponectin play an important protective role in the pathogenesis, development of CAD. High molecular weight adiponectin (HMWAPN), the subtype of adiponectin exerts this biological activity in most of the time. Until now, adiponectin is one of the most potential adipocytokins for the prediction and prognosis of CAD while whether the subtype of which, especially HMWAPN has effect on CAD and its prognosis remains uncertain. In the meanwhile, Secreted protein and riched in cysteine (SPARC) has gradually been recognized that it also has an certain effect on the pathogenesis of CAD while this effect, to our knowledge, was rarely investigated before and not well understood。
     [Objective]
     To explore the relationship between serum TAPN level、HMWAPN level、 HMW/TOTAL-adiponectin(H/T) ratio、SPARC level and CAD risk factors、the severity of coronary artery in the patients with CAD and to investigate the relationship between the above four factors and prognosis of CAD, mainly include main adverse cardiovascular and cerebral vascular events (MACCE)
     [methods]
     A total of503hospitalized patients underwent coronary angiography, who were in Beijing, from July2007to May2009in Peking Union Medical College Hostipal were included. All patients' clinical data, including classic cardiovascular risk factors, past medical history, lab tests(include serum HMWAPN TAPN and SPARC), creatinine clearance, left ventricle ejection fraction were collected after admission. Every subject was calculated gensini score、modified gensini score and diffuse score according to their results of coronary angiography to quantify the severity of coronary artery. Those patients (449cases) with proved CAD by coronary angiography were followed up till December2012. The primary end point was the occurrence of major adverse cardiovascular cerebral vascular events (MACCE), including cardiovascular death, targeted vascular revascularization, acute coronary syndrome and deterioration of cardiac function, transient ischemic attack and stroke. And analysis was conducted to identify the relationship between TAPN level、HMWAPN level、HMW/total-adiponectin ratio、 SPARC level and CAD risk factors、the severity of coronary in the patients with CAD and to investigate the relationship between the above four factors and the prognosis of CAD.
     [Results]
     1,178MACCE occurrenced during the period of follow up (the average follow up month is54.4±5.7), and the incidence of MACCE was39.6%. Compared with the first follow up (March2010) results, cardiac death, target vessel revascularization, stroke had a higher growth rate which reached212.5%,116.7%and120.0%, respectively.
     2, Adiponectin and CAD:(1) Serum HMWAPN、TAPN level of dislipidemia were more lower than of normal in male patients with CAD (p<0.05or0.01). While in female patients with CAD, there is no significant difference of Serum HMWAPN、TAPN level and H/T ratio in every subgroups (p>0.05).(2) Correlation analysis revealed that Serum HMWAPN、TAPN level had a negative association with the number of risk factors、body mass index (BMI)、creatinine clearance in male patients with CAD(p<0.05or0.01). While in female patients with CAD, Serum HMWAPN TAPN level and H/T ratio had no association with various clinical indicators (p>0.05).(2) COX regression analysis found that the low level of HMWAPN (p=0.022, RR=1.656) and H/Tratio (p=0.002, RR=2.048) were independent risk factors for occurrence of MACCE in male patients with CAD and low level of HMWAPN (p=0.004, RR=2.832) and TAPN (p=0.003, RR=2.802) were independent risks factors in female patients with CAD.
     3, SPARC and CAD:(1) Correlation analysis found that:serum SPARC had a positively correlation with hypersensitive c-reactive protein (hsCRP) and Gensini score, modified Gensini score and diffuse score,(p<0.05), the multifactor linear regression analysis revealed that serum SPARC was an independent factor for the the severity of coronary artery(Gensini score)(p=0.023).(2) COX regression analysis found that serum SPARC levels had no effect on the incidence of MACCE for CAD patients (p>0.05).
     [Conclusion]
     1, The proportion of cardiac death, target vessel revascularization and deterioration of cardiac function had been gradually rised in the total MACCE with the extension of follow-up.
     2, The HMWAPN level and H/T ratio were independent protective factors for the incidence of MACCE in male patients with CAD while TAPN level was irrelevant, And this protective effect was not affected by the traditional risk factors of CAD. The decrease level of HMWAPN could be a predictor of a poor prognosis in this group.
     ,3, The TAPN and HMWAPN level were independent protective factors for the incidence of MACCE in female patients with CAD while H/T ratio was irrelevant, And this protective effect was also not affected by the traditional risk factors of CAD. The decrease level of HMWAPN and TAPN could be a predictor of a poor prognosis in this group.
     4, SPARC level was assocated with the severity of coronary artery and may play a certain role in the pathogenesis of coronary atherosclerosis, and also has a role of early warning for the CAD. SPARC had no significant correlation with the incidence of total MACCE in patients with CAD, but may have some tips for occurrence of ACS and heart function deterioration in future.
引文
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