董 軍姜 華陳樹濤△
白細(xì)胞介素-6、白細(xì)胞介素-10、腫瘤壞死因子-α與冠心病關(guān)系的初步研究
董 軍1姜 華2陳樹濤1△
目的 研究炎癥細(xì)胞因子白細(xì)胞介素(IL)-6、腫瘤壞死因子(TNF)-α、IL-10等與冠心?。–HD)發(fā)病的關(guān)系。方法選取冠心病患者628例,同期經(jīng)冠脈造影證實(shí)冠脈無狹窄的非冠心病患者540例為對(duì)照組,記錄患者的資料,包括年齡、體質(zhì)指數(shù)(BMI)、血糖(Glu)、總膽固醇(TC)、三酰甘油(TG)、高密度脂蛋白膽固醇(HDL-C)、低密度脂蛋白膽固醇(LDL-C)等指標(biāo),同時(shí)用酶聯(lián)免疫吸附試驗(yàn)法檢測血清IL-6、IL-10、TNF-α等炎癥因子水平。結(jié)果CHD組BMI、LDL-C、TG水平均高于對(duì)照組,而HDL-C水平低于對(duì)照組(均P<0.05)。CHD組血清IL-6、TNF-α水平均高于對(duì)照組,而IL-10低于對(duì)照組(均P<0.05)。結(jié)論血清IL-6、TNF-α參與了CHD的發(fā)生。血清IL-10有抑制炎癥作用,可能對(duì)血管有保護(hù)作用。
冠心?。话准?xì)胞介素6;白細(xì)胞介素10;腫瘤壞死因子α
隨著人們生活水平的提高,壽命的延長,冠心?。–HD)已經(jīng)成為人類健康的一大威脅。隨著對(duì)CHD研究的深入,人們逐漸認(rèn)識(shí)到炎癥反應(yīng)及炎癥介質(zhì)與血管生理的相關(guān)性。近年來研究已證實(shí),CHD發(fā)病與炎癥過程密切相關(guān)[1]。某些炎癥細(xì)胞因子如白細(xì)胞介素(IL)-6、腫瘤壞死因子(TNF)-α、抗炎因子IL-10等與CHD的發(fā)病相關(guān)。本文從血清水平對(duì)炎癥反應(yīng)與CHD的關(guān)系進(jìn)行初步研究。
1.1 研究對(duì)象 建立冠心病患者數(shù)據(jù)庫,選取我院2012年 1月—2014年3月期間住院患者中經(jīng)冠脈造影明確為冠心病者628例(不含急性心肌梗死患者),為CHD組;選取同期經(jīng)冠脈造影證實(shí)冠脈無狹窄的非冠心病患者540例為對(duì)照組。所有研究對(duì)象均排除糖尿病、腦血管疾病和肝臟疾病等,且無明確高血壓病史。入選者年齡35~75歲。
1.2 研究方法 住院期間每例患者均行冠脈造影檢查,受試對(duì)象入院后,于冠脈造影手術(shù)前,均抽取空腹12 h后的肘正中靜脈血,測定血糖(Glu)、總膽固醇(TC)、三酰甘油(TG)、高密度脂蛋白膽固醇(HDL-C)、低密度脂蛋白膽固醇(LDLC)等一般指標(biāo)。同時(shí)收集患者生化檢測后非抗凝管中的血清,于-20℃冰柜保存,用酶聯(lián)免疫吸附試驗(yàn)法檢測血清IL-6、IL-10、TNF-α等炎癥因子水平。同時(shí)收集其年齡、性別、體質(zhì)指數(shù)(BMI)等一般資料。
1.3 統(tǒng)計(jì)學(xué)方法 使用SPSS 17.0軟件進(jìn)行統(tǒng)計(jì)學(xué)分析,計(jì)量資料數(shù)據(jù)以均數(shù)±標(biāo)準(zhǔn)差(±s)表示,2組均數(shù)間比較采用獨(dú)立樣本t檢驗(yàn),計(jì)數(shù)資料采用χ2檢驗(yàn),P<0.05為差異有統(tǒng)計(jì)學(xué)意義。
2.1 2組基線資料比較 2組間年齡、性別比較差異無統(tǒng)計(jì)學(xué)意義,CHD組BMI、Glu、TG、LDL-C水平高于對(duì)照組,而HDL-C水平低于對(duì)照組(P<0.05),見表1、2。
Tab.1 Comparison of general data between two groups表1 2組患者一般情況比較
Tab.2 Comparison of biochemical index between two groups表2 2組患者生化指標(biāo)比較 (mmol/L,±s)
Tab.2 Comparison of biochemical index between two groups表2 2組患者生化指標(biāo)比較 (mmol/L,±s)
組別對(duì)照組CHD組t n 540 628 Glu 5.02±0.36 5.11±1.35 3.333**TC 5.00±0.12 5.00±1.67 0 TG 1.13±0.78 1.51±1.12 2.955**HDL-C 1.45±0.32 1.32±0.26 4.391**LDL-C 2.97±1.65 3.34±2.71 5.740**
2.2 血清IL-6、IL-10、TNF-α水平比較 CHD組血清IL-6、TNF-α高于對(duì)照組,IL-10低于對(duì)照組(P<0.05),見表3。
Tab.3 Comparison of serum levels of IL-6, IL-10 and TNF-α between two groups表3 2組患者血清IL-6、IL-10、TNF-α水平比較 (μg/L,±s)
Tab.3 Comparison of serum levels of IL-6, IL-10 and TNF-α between two groups表3 2組患者血清IL-6、IL-10、TNF-α水平比較 (μg/L,±s)
組別對(duì)照組CHD組t n 540 628 IL-6 103.22±9.01 126.38±22.91 2.068*IL-10 158.65±61.90 86.71±37.76 3.154**TNF-α 90.01±20.18 134.13±38.06 2.706**
IL-6是活化的T淋巴細(xì)胞和成纖維細(xì)胞產(chǎn)生的淋巴因子,它參與機(jī)體的損傷修復(fù)及炎癥反應(yīng)。IL-6可以刺激血管平滑肌細(xì)胞增生,使動(dòng)脈粥樣硬化斑塊增長并趨于不穩(wěn)定[2]。目前認(rèn)為IL-6分泌異常在CHD發(fā)病中起重要作用。本研究也顯示冠心病組血清IL-6水平高于對(duì)照組,提示CHD患者存在全身炎癥反應(yīng)。IL-6對(duì)CHD的影響可能機(jī)制為:(1)IL-6使平滑肌細(xì)胞和成纖維細(xì)胞增殖,產(chǎn)生血小板源生長因子(PDGF),使血循環(huán)中的血小板數(shù)量增加,并升高血漿纖維蛋白原,促進(jìn)冠心病的形成。(2)IL-6誘導(dǎo)中性粒細(xì)胞在毛細(xì)血管中黏附、聚集、停留,加重炎癥反應(yīng);使中性粒細(xì)胞和溶酶體釋放彈性蛋白酶,加強(qiáng)了對(duì)血管的破壞作用。(3)IL-6還可使白細(xì)胞流變學(xué)特性發(fā)生改變,使其易于黏附血管壁增加血管阻力,并造成血管損傷。(4)IL-6可通過多種途徑促進(jìn)血管平滑肌細(xì)胞增生、增殖導(dǎo)致血管重構(gòu)。王衛(wèi)定等[3]曾對(duì)經(jīng)冠脈造影明確冠心病的患者,測其血IL-6,發(fā)現(xiàn)IL-6為冠心病危險(xiǎn)因素,但并不能作為反映冠狀動(dòng)脈狹窄程度和病變支數(shù)的指標(biāo)。IL-10是體內(nèi)重要的抗炎因子,它通過抑制TNF-α、IL-1、IL-6、IL-8等炎癥因子的產(chǎn)生,下調(diào)炎癥反應(yīng),減輕炎癥對(duì)血管的損傷。有研究顯示,心肌缺血再灌注損傷后,IL-10明顯增多,可以調(diào)節(jié)金屬蛋白酶組織抑制因子的表達(dá)與釋放,抑制心肌重構(gòu),促進(jìn)心肌修復(fù)[4-5]。TNF-α主要由活化的巨噬細(xì)胞產(chǎn)生,是多功能的致炎因子。TNF-α通過加強(qiáng)血纖維蛋白酶原抑制物-1的作用及抑制抗凝血蛋白-C來促進(jìn)血栓前期形成[6]。CHD患者血清TNF-α水平明顯高于正常人,而且隨病情的加重而升高;本研究結(jié)果CHD組血清TNF-α明顯高于對(duì)照組。
本研究初步探討了IL-6、TNF-α、抗炎因子IL-10等與CHD的關(guān)系,涉及的炎癥標(biāo)志物有限,更深一步揭示炎癥反應(yīng)與冠心病的關(guān)系,還需更多的研究。
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(2014-03-16收稿 2014-06-17修回)
(本文編輯 李國琪)
The Preliminary Study of the Relationship between IL-6,IL-10,TNF-α and Coronary Artery Disease
DONG Jun1,JIANG Hua2,CHEN Shutao1△
1 Department of CICU of Tianjin Chest Hospital,Tianjin 300222,China;2 Department Cardiology,Tianjin Chese Hospital
△
E-mail:shutaochen2099@126.com
ObjectiveTo study the relationship between coronary artery disease(CHD)and interleukin-6(IL-6), TNF-α and IL-10.MethodsPatients with CHD were included in CHD group(n=628)and patients without CHD confirmed by coronary angiography were selected in control group(n=540).The recorded data included age,body mass index (BMI)and serum levels of glucose(GLU),total cholesterol(TC),triglyceride(TG),high density lipoprotein-cholesterol(HDLC)and low density lipoprotein-cholesterol(LDL-C).Meanwhile serum levels of IL-6,TNF-α,IL-10 were determined by ELISA.ResultsSerum levels of BMI,LDL-C,TG were higher in CHD group than those in control group(P<0.01).The serum level of HDL-C was significantly lower in CHD group than that in control group(P<0.01).Serum levels of IL-6(P<0.05)and TNF-α(P<0.01)were higher in CHD group than those in control group.The serum level of IL-10 was significantly lower in CHD group than that in control group(P<0.01).ConclusionIL-6 and TNF-α are involved in the development of CHD.IL-10 can inhibit inflammation and protect vessel integrity.
coronary disease;interleukin-6;interleukin-10;tumor necrosis factor-alpha
R541.4
A
10.3969/j.issn.0253-9896.2014.11.017
1天津市胸科醫(yī)院CICU科(郵編300222);2天津市胸科醫(yī)院心內(nèi)一科
△通訊作者 E-mail:shutaochen2099@126.com