摘要目的:系統(tǒng)評(píng)價(jià)不同抗炎藥物治療冠心病的有效性和安全性,以進(jìn)一步明確冠心病抗炎治療的理想靶點(diǎn)。方法:計(jì)算機(jī)檢索MedLine、the Cochrane Library、EMbase、Web of Science等數(shù)據(jù)庫(kù),檢索抗炎藥物治療冠心病的隨機(jī)對(duì)照試驗(yàn)。使用RevMan 5.3軟件對(duì)納入文獻(xiàn)進(jìn)行Meta分析。結(jié)果:納入18篇文獻(xiàn),涉及65 892例病人,Meta分析結(jié)果顯示,接受抗炎治療的病人發(fā)生主要不良心血管事件(MACE)的風(fēng)險(xiǎn)較低[RR=0.87,95% CI(0.79,0.96),P=0.005],亞組分析提示,白細(xì)胞介素(IL)-1拮抗劑[RR=0.87,95%CI(0.79,0.95),P=0.002]及秋水仙堿[RR=0.61,95%CI(0.48,0.79),P=0.000 1]降低了病人MACE發(fā)生風(fēng)險(xiǎn),差異有統(tǒng)計(jì)學(xué)意義??寡姿幬飳?duì)病人全因死亡率沒(méi)有影響。兩組因心力衰竭再住院發(fā)生率比較,差異無(wú)統(tǒng)計(jì)學(xué)意義[RR=0.95,95% CI(0.83,1.10),P>0.05],亞組分析提示,IL-1拮抗劑降低了冠心病病人因心力衰竭再住院發(fā)生率[RR=0.12,95% CI(0.02,0.94),P=0.04]。不良反應(yīng)方面,甲氨蝶呤增加了病人感染的風(fēng)險(xiǎn)[RR=1.13,95% CI(1.03,1.24),P=0.01]以及胃腸道不良反應(yīng)的發(fā)生風(fēng)險(xiǎn)[RR=1.23,95%CI(1.07,1.43),P<0.05]。結(jié)論:現(xiàn)有證據(jù)表明,抗炎治療能夠減少冠心病病人MACE的發(fā)生,而核苷酸結(jié)合寡聚化結(jié)構(gòu)域樣受體蛋白3(NLRP3)/IL-1/IL-6炎癥通路可作為理想的治療靶點(diǎn)之一。
關(guān)鍵詞冠心?。豢寡姿幬?;主要不良心血管事件;Meta分析;系統(tǒng)評(píng)價(jià)
doi:10.12102/j.issn.1672-1349.2024.15.019
The Efficacy and Safety of Different Anti-inflammatory Drugs for the Treatment of Coronary Heart Disease:a Systematic Review
LIU Xueqian, FAN Lihua, CHEN Yunhu, CHEN Daopeng, REN Xiang
Taicang Affiliated Hospital of Nanjing University of Chinese Medicine/Taicang Hospital of Traditional Chinese Medicine, Taicang 215400, Jiangsu, China
Corresponding AuthorREN Xiang, E-mail: 59582926@qq.com
AbstractObjective:To systematically evaluate the efficacy and safety of different anti-inflammatory drugs for the treatment of coronary heart disease,in order to further clarify the optimal targets of anti-inflammatory treatment of coronary heart disease.Methods:Randomized controlled trials of anti-inflammatory drugs for coronary heart disease were searched from MedLine,the Cochrane Library,EMbase,Web of Science and other databases.RevMan 5.3 software were used for Meta-analysis.Results:A total of 18 literatures were included,including 65 892 patients.The results of Meta-analysis showed that anti-inflammatory therapy patients occurred a low risk of major adverse cardiovascular events(MACE)(RR=0.87,95%CI 0.79-0.96,P=0.005),the subgroup analysis showed that interleukin(IL) 1 antagonist(RR=0.87,95%CI 0.79-0.95,P=0.002) and colchicine reduced the risk of MACE(RR=0.61,95%CI 0.48-0.79,P=0.000 1).Anti-inflammatory drugs showed no effect on all-cause mortality.There was no statistically significant difference in the incidence of hospitalization due to heart failure between the two groups(RR=0.95,95%CI 0.83-1.10,P>0.05).Subgroup analysis showed that IL-1 antagonists reduced the incidence of hospitalization due to heart failure in coronary heart disease patients(RR=0.12,95%CI 0.02-0.94,P=0.04).In terms of adverse reactions,methotrexate increased the risk of infection(RR=1.13,95%CI 1.03-1.24,P=0.01) and gastrointestinal adverse reactions(RR=1.23,95%CI 1.07-1.43,P<0.05).Conclusion:The current evidence showed that anti-inflammatory therapy could reduce the incidence of MACE in patients with coronary heart disease,and the nucleotide-binding oligomeric domain-like receptor protein 3(NLRP3)/IL-1/IL-6 inflammatory pathway might be one of the ideal therapeutic targets.
Keywordscoronary heart disease; anti-inflammatory drugs;" major adverse cardiovascular events; Meta-analysis; systematic review
據(jù)《中國(guó)心血管健康與疾病報(bào)告2021》,我國(guó)每5例死亡病人中有2例死于心血管疾?。╟ardiovascular disease,CVD),CVD已成為我國(guó)城鄉(xiāng)居民死亡的首要因素[1]。冠狀動(dòng)脈粥樣硬化性心臟?。ü谛牟。┦且鹦难芩劳龅闹饕膊≈?,其逐年增長(zhǎng)的發(fā)病率,給個(gè)人及社會(huì)均帶來(lái)了沉重的經(jīng)濟(jì)負(fù)擔(dān)。
冠心病的發(fā)病與動(dòng)脈粥樣硬化(atherosclerosis,AS)密切相關(guān),炎癥反應(yīng)被認(rèn)為是重要的驅(qū)動(dòng)因素。炎癥不僅會(huì)引起AS斑塊的不穩(wěn)定而誘發(fā)急性冠脈綜合征(acute coronary syndrome,ACS),同時(shí)在心肌梗死過(guò)程中進(jìn)一步損傷心肌并參與梗死后心室重塑[2]。因此,抗炎治療也逐漸成為近些年的研究熱點(diǎn)。2017年公布的CANTOS研究表明,卡納單抗[白細(xì)胞介素-1β(IL-1β)阻斷性抗體]在不影響血脂及血糖的情況下,能夠降低心肌梗死病人的不良心血管事件發(fā)生率[3],然而,隨后的CIRT研究卻得出了相反的結(jié)論,即甲氨蝶呤未能降低包括心血管死亡及非致死性心肌梗死或中風(fēng)在內(nèi)的主要終點(diǎn)事件發(fā)生風(fēng)險(xiǎn)[4]。此外,針對(duì)抗炎藥物秋水仙堿在冠心病病人中的運(yùn)用也進(jìn)行了多項(xiàng)薈萃分析,結(jié)果不一致[5-7]。由于AS炎癥調(diào)控網(wǎng)絡(luò)復(fù)雜且靶點(diǎn)眾多[8],冠心病的抗炎治療仍在探索當(dāng)中。因此,本研究檢索抗炎藥物應(yīng)用于冠心病病人的相關(guān)臨床研究,并進(jìn)行Meta分析和系統(tǒng)評(píng)價(jià),旨在評(píng)價(jià)作用于不同通路的抗炎藥物在冠心病病人中的有效性和安全性,以期進(jìn)一步明確冠心病抗炎治療的理想靶點(diǎn)。
1資料與方法
1.1文獻(xiàn)檢索
計(jì)算機(jī)檢索中英文數(shù)據(jù)庫(kù),包括MedLine、EMbase、Web of Science、the Cochrane Library、知網(wǎng)、萬(wàn)方等。中文檢索詞為:(冠狀動(dòng)脈粥樣硬化性心臟病OR冠心病OR心肌梗死OR心絞痛OR急性冠脈綜合征)AND(抗炎OR白介素OR秋水仙堿OR甲氨蝶呤),英文檢索詞為:(coronary heart disease OR myocardial infarction OR angina OR acute coronary syndrome)AND(anti-inflammatory OR interleukin OR colchicine OR methotrexate)。檢索時(shí)限為建庫(kù)至2022年6月,語(yǔ)言不限。同時(shí)審查相關(guān)綜述中的參考文獻(xiàn),以免漏掉可能的研究。
1.2納入與排除標(biāo)準(zhǔn)
納入標(biāo)準(zhǔn):1)隨機(jī)對(duì)照試驗(yàn)(randomized controlled trials,RCT);2)冠心病病人;3)對(duì)照組病人給予安慰劑,治療組病人給予抗炎藥物;4)結(jié)局指標(biāo)為主要不良心血管事件(MACE,包括心血管死亡、非致死性心肌梗死或中風(fēng)以及因缺血導(dǎo)致的緊急血運(yùn)重建)、全因死亡率、因心力衰竭再住院、不良反應(yīng)。
排除標(biāo)準(zhǔn):1)觀察指標(biāo)不符或數(shù)據(jù)缺損無(wú)法納入定量分析的研究;2)重復(fù)發(fā)表的文獻(xiàn)。
1.3數(shù)據(jù)提取及質(zhì)量評(píng)價(jià)
2名研究者獨(dú)立完成文獻(xiàn)篩選,并對(duì)符合要求的研究進(jìn)行數(shù)據(jù)提取及質(zhì)量評(píng)價(jià)。如有分歧,2名研究者討論協(xié)商或請(qǐng)第3位研究者裁定。質(zhì)量評(píng)價(jià)采用Cochrane協(xié)作網(wǎng)推薦的偏倚風(fēng)險(xiǎn)評(píng)估法,包括隨機(jī)方法、分配隱藏、干預(yù)盲法、結(jié)果盲法、數(shù)據(jù)完整性、選擇性報(bào)告、其他偏倚7項(xiàng)指標(biāo)。
1.4統(tǒng)計(jì)學(xué)處理
所有統(tǒng)計(jì)分析使用RevMan 5.3軟件完成。相對(duì)危險(xiǎn)度(relative risk,RR)及95%置信區(qū)間(95%CI)作為效應(yīng)量;采用I2檢驗(yàn)進(jìn)行異質(zhì)性分析,異質(zhì)性較小時(shí)(I2<50%)采用固定效應(yīng)模型,否則,采用隨機(jī)效應(yīng)模型;使用漏斗圖評(píng)價(jià)發(fā)表偏倚。
2結(jié)果
2.1文獻(xiàn)檢索結(jié)果
檢索中英文數(shù)據(jù)庫(kù)后共獲得文獻(xiàn)780篇,剔除重復(fù)文獻(xiàn)、閱讀標(biāo)題、摘要及全文后,最終納入18項(xiàng)RCT[3-4,9-24]。具體文獻(xiàn)檢索及篩選流程見(jiàn)圖1。
2.2納入文獻(xiàn)的基本特征
共納入18項(xiàng)RCTs[3-4,9-24],涉及65 892例冠心病病人,其中試驗(yàn)組34 770例,對(duì)照組31 122例。試驗(yàn)組病人予抗炎藥物治療,包括白細(xì)胞介素(IL)-1拮抗劑[卡那單抗(canakinumab)和阿那白滯素(anakinra)]、IL-6拮抗劑[托珠單抗(tocilizumab)]、脂蛋白相關(guān)磷脂酶A2 (Lp-PLA2)抑制劑[伐瑞拉迪(varespladib)和達(dá)普拉締(darapladib)]、p38絲裂原活化蛋白激酶(MAPK)抑制劑[洛批莫德(losmapimod)]、秋水仙堿及甲氨蝶呤,對(duì)照組病人給予安慰劑治療。隨訪時(shí)間為8周至3.7年。詳見(jiàn)表1。
2.3納入文獻(xiàn)質(zhì)量評(píng)價(jià)
在干預(yù)盲法方面,1項(xiàng)研究[15]未施盲,1項(xiàng)研究[23]僅對(duì)研究者施盲,評(píng)為高風(fēng)險(xiǎn),1項(xiàng)研究[18]未提及盲法,評(píng)為不清楚;數(shù)據(jù)完整性方面,1項(xiàng)研究[4]由于未達(dá)到終點(diǎn)指標(biāo)被中止,評(píng)為高風(fēng)險(xiǎn)。其余偏倚評(píng)估均為低風(fēng)險(xiǎn)。詳見(jiàn)圖2、圖3。 圖2納入研究的偏倚風(fēng)險(xiǎn)比例圖
2.4Meta分析結(jié)果
2.4.1MACE
18項(xiàng)研究[3,4,9-24]報(bào)道了MACE,各研究間異質(zhì)性較大(I2 =67%),采用隨機(jī)效應(yīng)模型,Meta分析結(jié)果顯示,試驗(yàn)組發(fā)生MACE的風(fēng)險(xiǎn)低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義[RR=0.87,95%CI(0.79,0.96),P<0.000 1]。亞組分析提示,IL-1拮抗劑[RR=0.87,95% CI(0.79,0.95),P=0.002]及秋水仙堿降低了病人MACE發(fā)生風(fēng)險(xiǎn),差異有統(tǒng)計(jì)學(xué)意義[RR=0.57,95%CI(0.43,0.76),P=0.000 1]。IL-6拮抗劑、Lp-PLA2抑制劑、p38 MAPK抑制劑、甲氨蝶呤對(duì)冠心病病人發(fā)生MACE風(fēng)險(xiǎn)無(wú)明顯影響。詳見(jiàn)圖4。
2.4.2全因死亡率
14項(xiàng)研究[3-4,10-14,16-21,24]報(bào)道了全因死亡率,各研究間異質(zhì)性較?。↖2 =8%),采用固定效應(yīng)模型,Meta分析結(jié)果顯示,兩組全因死亡率比較,差異無(wú)統(tǒng)計(jì)學(xué)意義[RR=0.99,95%CI(0.93,1.06),P>0.05]。亞組分析顯示,IL-1拮抗劑、Lp-PLA2抑制劑、p38 MAPK抑制劑、秋水仙堿及甲氨蝶呤均對(duì)病人全因死亡率無(wú)明顯影響。詳見(jiàn)圖5。 圖5兩組全因死亡率比較的Meta分析森林圖
2.4.3因心力衰竭再住院
8項(xiàng)研究[4,10,13-16,18,20]報(bào)道了因心力衰竭住院事件,各研究間異質(zhì)性較?。↖2=0%),采用固定效應(yīng)模型,Meta分析結(jié)果顯示,兩組因心力衰竭再住院發(fā)生率比較,差異無(wú)統(tǒng)計(jì)學(xué)意義[RR=0.95,95% CI(0.83,1.10),P>0.05]。亞組分析提示,IL-1拮抗劑降低了冠心病病人因心力衰竭再住院發(fā)生率,差異有統(tǒng)計(jì)學(xué)意義[RR=0.12,95%CI(0.02,0.94),P=0.04],而Lp-PLA2抑制劑、p38 MAPK抑制劑、秋水仙堿及甲氨蝶呤對(duì)冠心病病人因心力衰竭再住院發(fā)生率無(wú)明顯影響。詳見(jiàn)圖6。
2.4.4不良反應(yīng)
10項(xiàng)研究[3-4,9,12-14,16-18,24]報(bào)道了相關(guān)不良反應(yīng),各研究間異質(zhì)性較?。↖2=0%),采用固定效應(yīng)模型,Meta分析結(jié)果顯示,試驗(yàn)組繼發(fā)感染的風(fēng)險(xiǎn)高于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義[RR=1.10,95%CI(1.03,1.18),P=0.005]。亞組分析表明,甲氨蝶呤增加了病人感染的風(fēng)險(xiǎn)[RR=1.13,95%CI(1.03,1.24),P=0.01],而IL-1拮抗劑、IL-6拮抗劑、Lp-PLA2抑制劑、p38 MAPK抑制劑、秋水仙堿均未增加感染風(fēng)險(xiǎn)。詳見(jiàn)圖7。6項(xiàng)研究[4,11-12,14,19-20]報(bào)道了胃腸道相關(guān)不良反應(yīng),各研究間異質(zhì)性較大(I2=89%),采用隨機(jī)效應(yīng)模型,Meta分析結(jié)果顯示,抗炎治療整體上增加了胃腸道相關(guān)不良事件的發(fā)生率[RR=1.42,95%CI(1.14,1.78),P<0.001]。亞組分析顯示,接受甲氨蝶呤治療病人發(fā)生胃腸道不良反應(yīng)的風(fēng)險(xiǎn)明顯增加[RR=1.23,95%CI(1.07,1.43),P<0.05],而Lp-PLA2抑制劑、秋水仙堿未增加胃腸道不良反應(yīng)的風(fēng)險(xiǎn)。詳見(jiàn)圖8。
2.5發(fā)表偏倚
針對(duì)不良心血管事件這一結(jié)局指標(biāo)繪制漏斗圖(見(jiàn)圖9),漏斗圖中各研究點(diǎn)左右分布不對(duì)稱,提示可能存在發(fā)表偏倚。
3討論
據(jù)統(tǒng)計(jì),2019年我國(guó)冠心病病人約有1 139萬(wàn)人[1],即便是嚴(yán)格遵循冠心病二級(jí)預(yù)防治療方案,MACE的年發(fā)生率仍可高達(dá)3%[25],因此亟須新的干預(yù)措施來(lái)改善這一臨床現(xiàn)狀。由于炎癥反應(yīng)在動(dòng)脈粥樣硬化斑塊的形成過(guò)程中起著重要作用,抗炎則成了重要突破口之一。
本研究共納入18項(xiàng)RCTs,比較了6類抗炎藥物的療效差異,Meta分析結(jié)果顯示,抗炎治療整體上降低了冠心病病人發(fā)生MACE的風(fēng)險(xiǎn)。在此之前,Wudexi等[26]和Wang等[27]也分別進(jìn)行了薈萃分析,然而,結(jié)果均未發(fā)現(xiàn)抗炎治療能降低再發(fā)心血管事件的風(fēng)險(xiǎn)。與之不同的是,一方面,本研究選擇了心血管死亡而非全因死亡作為復(fù)合終點(diǎn)事件之一,全因死亡事件受到多因素影響,這容易混淆抗炎治療對(duì)冠心病的真實(shí)效應(yīng);另一方面,在先前的Meta分析中,血運(yùn)重建事件未被計(jì)算在內(nèi),抗炎的療效可能會(huì)因此被低估?;A(chǔ)研究表明,動(dòng)脈粥樣硬化的發(fā)病機(jī)制與核苷酸結(jié)合寡聚化結(jié)構(gòu)域樣受體蛋白3(NLRP3)炎癥小體和IL-1促炎因子家族密切相關(guān)[28],而本研究亞組分析提示IL-1拮抗劑及秋水仙堿能減少M(fèi)ACE的發(fā)生,這兩類藥物正是作用于NLRP3/IL-1/IL-6炎癥通路,IL-1拮抗劑可直接阻斷IL-1β與IL-1受體結(jié)合,秋水仙堿則是與微管蛋白二聚體結(jié)合,進(jìn)而抑制NLRP3組裝及IL-1β活化[29-30],同時(shí),秋水仙堿還可以抑制中性粒細(xì)胞脫顆粒發(fā)揮抗炎作用[31]。
本研究還發(fā)現(xiàn),所有抗炎藥物均對(duì)冠心病病人全因死亡沒(méi)有影響,整體上試驗(yàn)組全因死亡率也未有改善,這與先前薈萃分析的結(jié)果一致[26-27]?;蛟S是抗炎治療所致的感染增加了死亡的風(fēng)險(xiǎn),故在一定程度上抵消了其對(duì)心腦血管的保護(hù)作用。但是,亞組分析提示,僅接受甲氨蝶呤治療的病人感染風(fēng)險(xiǎn)增加,而其余抗炎藥物均有較好的耐受性。因此,該結(jié)果仍需謹(jǐn)慎地解讀。
心力衰竭是心肌梗死后常見(jiàn)并發(fā)癥之一,也是心肌梗死病人不良預(yù)后的重要危險(xiǎn)因素之一[32-33]。據(jù)統(tǒng)計(jì),心肌梗死后心力衰竭1年發(fā)生率為20%~30%,而5年發(fā)生率則高達(dá)75%[34]。心肌梗死后免疫系統(tǒng)被激活,會(huì)產(chǎn)生大量炎性因子如IL-1β、TNF-α等,進(jìn)而導(dǎo)致線粒體損傷、細(xì)胞凋亡,引起心肌順應(yīng)性的下降及心室重塑[35]。本研究也評(píng)估了抗炎藥物在心肌梗死后病人中的療效,雖然整體上試驗(yàn)組因心力衰竭住院事件未有明顯減少,但是IL-1拮抗劑降低了心肌梗死病人心力衰竭再住院率,這再次表明NLRP3/IL-1/IL-6通路是冠心病抗炎治療的潛在靶點(diǎn),可成為未來(lái)研究方向之一。
本研究仍有一些不足之處:1)納入人群具有較大臨床異質(zhì)性,異質(zhì)性可能與多種原因有關(guān),如冠心病類型(既有穩(wěn)定型心絞痛也有ACS)以及隨訪時(shí)間的差異。此外,既往研究表明炎癥反應(yīng)存在于部分冠心病病人中[36],因此,抗炎治療對(duì)于存在殘余炎癥風(fēng)險(xiǎn)的病人或許更為合適,然而多數(shù)研究未檢測(cè)納入病人基線時(shí)的炎癥指標(biāo),故未能對(duì)此進(jìn)行亞組分析,這也可能是異質(zhì)性來(lái)源之一。2)漏斗圖提示納入研究存在一定發(fā)表偏倚,這在一定程度上影響了結(jié)果的準(zhǔn)確性。3)雖然本研究表明IL-1拮抗劑能夠降低心肌梗死病人再發(fā)心力衰竭住院事件發(fā)生率,但仍需更多臨床試驗(yàn)來(lái)證實(shí)。
4結(jié)論
抗炎治療能夠改善冠心病病人的預(yù)后,減少心血管事件的發(fā)生,而NLRP3/IL-1/IL-6炎癥通路可作為理想的治療靶點(diǎn)之一。此外,由于冠心病的炎癥反應(yīng)存在個(gè)體差異性,篩選出潛在獲益人群或許是抗炎治療成功的另一重要條件。
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(收稿日期:2023-01-06)
(本文編輯郭懷印)