循证用药
不同他汀类药物对肝功能影响的网状Meta分析
中国全科医学, 2021,24(18) : 2331-2341. DOI: 10.12114/j.issn.1007-9572.2021.00.488
摘要
背景

他汀类药物(简称他汀)是目前最为常用的药物之一,而他汀的不良反应尤其是肝毒性也越来越引起人们的关注,但目前关于不同他汀对肝功能影响的评价不一。

目的

系统评价不同他汀对肝功能的影响。

方法

计算机检索Cochrane Library、PubMed、EMBase、Medline,检索干预措施为他汀、不良反应涉及肝功能异常的随机对照试验(RCTs),检索时限为建库至2020-09-10。由2位研究者进行筛选文献、提取资料、评价纳入文献的偏倚风险,采用Stata 14软件进行网状Meta分析。

结果

共纳入46篇RCTs,54 499例患者,包含6种药物:阿托伐他汀(21篇)、瑞舒伐他汀(10篇)、辛伐他汀(10篇)、普伐他汀(7篇)、洛伐他汀(4篇)、匹伐他汀(3篇)。网状Meta分析结果显示,阿托伐他汀肝功能异常发生率高于瑞舒伐他汀、普伐他汀,阿托伐他汀、瑞舒伐他汀肝功能异常发生率高于安慰剂(P<0.05)。累积排序曲线(SUCRA)对不同他汀的排序结果为安慰剂(77.2%)>匹伐他汀(70.9%)>普伐他汀(64.1%)>辛伐他汀(60.7%)>瑞舒伐他汀(40.4%)>洛伐他汀(31.6%)>阿托伐他汀(5.1%)。通过细胞色素P450氧化酶(CYP450酶)进行代谢的他汀肝功能异常发生率高于安慰剂(P<0.05)。SUCRA对不同代谢途径他汀的排序结果为安慰剂(95.6%)>不通过CYP450酶进行代谢的他汀(51.9%)>通过CYP450酶进行代谢的他汀(2.6%)。脂溶性他汀肝功能异常发生率高于安慰剂(P<0.05)。SUCRA对不同性质他汀的排序结果为安慰剂(97.4%)>水溶性他汀(48.7%)>脂溶性他汀(3.9%)。高强度阿托伐他汀肝功能异常发生率高于中强度匹伐他汀、中强度普伐他汀、中强度辛伐他汀、高强度瑞舒伐他汀、中强度瑞舒伐他汀,高强度阿托伐他汀、高强度瑞舒伐他汀肝功能异常发生率高于安慰剂(P<0.05)。SUCRA对不同剂量他汀的排序结果为中强度瑞舒伐他汀(76.4%)>中强度匹伐他汀(71.6%)>安慰剂(69.1%)>中强度辛伐他汀(67.5%)>中强度普伐他汀(55.1%)>低强度普伐他汀(41.7%)>高强度瑞舒伐他汀(40.9%)>中强度阿托伐他汀(37.9%)>低强度洛伐他汀(31.0%)>高强度阿托伐他汀(8.8%)。

结论

脂溶性他汀、通过CYP450酶进行代谢的他汀、高剂量他汀肝功能异常发生率较高。本研究纳入文献较多且总体质量尚可,对临床用药具有一定的指导意义,但部分文献质量不高,仍需开展更多高质量的RCTs对本研究结果进行验证。

引用本文: 邸钰蓉, 冯英娜, 杨大鸿, 等.  不同他汀类药物对肝功能影响的网状Meta分析 [J] . 中国全科医学, 2021, 24(18) : 2331-2341. DOI: 10.12114/j.issn.1007-9572.2021.00.488.
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他汀类药物(简称他汀)是目前最为常用的药物之一[1,2],具有降脂、改善内皮功能、抗炎、免疫调节、抗血栓等多种作用[3],可以有效地降低心脑血管疾病发病率及死亡率[4,5,6,7,8,9,10]。但许多患者因他汀不良反应对其依从性较差[11,12],且随着他汀使用者增加及其常与不同药物联用,引起潜在不良反应增加,限制了他汀的使用。其中药物性肝损伤占他汀所致不良反应的57%,在服用他汀的总人群中发病率为1.2/10万人[13,14]。因此美国食品药品监督管理局(FDA)建议,应在服用他汀之前在基线评估肝功能[15],同时,临床医生应了解不同他汀对肝功能的影响,了解不同类型(如不同代谢途径、亲脂性)他汀和不同剂量他汀对肝功能的影响,才能尽可能在获得他汀最大治疗效果的同时避免对肝功能的损害。

目前多数随机对照试验(randomized clinical trial,RCTs)为双臂安慰剂对照试验,普通Meta分析仅能实现药物两两之间的比较[16],不能简单明了的显示出各种他汀之间的比较结果,不利于他汀的选择。既往也没有网状Meta分析评价不同代谢途径、不同亲脂性、不同剂量他汀对肝功能的影响。本研究计划收集他汀治疗且不良反应涉及肝功能异常的RCTs,采用网状Meta分析对这些RCTs进行分析,以期获得不同他汀对肝功能影响的比较结果。本研究遵照《NMA优先报告条目-The PRISMA扩展申明》进行报告[17]

1 资料与方法
1.1 纳入标准
1.1.1 研究类型

RCTs。

本研究价值:

(1)本研究为首次多方面比较和评价不同他汀类药物(简称他汀)对肝功能影响的网络Meta分析,且纳入研究及例数较多。(2)本研究纳入的随机对照试验(RCTs)为随机分组,且排除了开放性标签的研究,可减少选择偏倚并提高结果的可靠性。(3)使用累积排序曲线(SUCRA)检测7种干预措施之间的细微差异。(4)不一致性检验没有显示实质性的不一致。

本研究局限性:

(1)纳入人群包括全部使用他汀的患者,患者自身病情、联合用药等混杂因素较多,可能影响研究结果。(2)纳入的一些RCTs的随访时间较短,可能不能很好地体现他汀对肝功能的长期影响。(3)查找文献时找到一篇关于氟伐他汀合格的文献,但因纳入后95%CI较大,故舍弃,未能进行氟伐他汀与安慰剂及其他他汀的比较。

1.1.2 研究对象

使用他汀的患者及其对照组,不限制患者所患疾病。

1.1.3 干预措施

他汀与安慰剂或另一种他汀进行比较。他汀包括:辛伐他汀、洛伐他汀、氟伐他汀、阿托伐他汀、匹伐他汀、普伐他汀和瑞舒伐他汀。

1.1.4 结局指标

肝功能异常:血清丙氨酸氨基转移酶(ALT)和/或血清天冬氨酸氨基转移酶(AST)≥2倍正常上线值(ULN)、总胆红素(Bilirubin)和/或碱性磷酸酶(ALP)≥2ULN[18]

1.2 排除标准

(1)会议摘要、信件、病例报告及综述;(2)重复发表文献;(3)动物实验;(4)开放性标签RCTs;(5)试验过程中使用非他汀类降脂药物或影响肝功能的药物。

1.3 检索策略

计算机检索Cochrane Library、PubMed、EMBase、Medline,检索干预措施为他汀、不良反应涉及肝功能异常的RCTs,检索时限为建库至2020-09-10;手工检索相关参考文献以补充文献。英文检索词为:statin、atorvastatin、rosuvastatin、simvastatin、pravastatin、lovastatin、fluvastatin、pitavastatin、bilirubin、aspartate aminotransferase(AST)、alanine aminotransferase(ALT)、alkaline phosphatase(ALP)、cholinesterase(ChE)、lactate dehydrogenase(LD/LDH)、hepatotoxicity、liver function、liver injury、liver damage、liver toxicity、random等。

1.4 文献筛选及资料提取

由2名研究者进行文献筛选及资料提取,排除重复文献后首先阅读题目及摘要排除明显不符合要求的文献,对剩余文献进行全文阅读,明确是否符合纳入标准,如有必要,通过各种联系方式(电话、邮箱)联系原作者获取所需信息,对需要纳入的文献由2名研究者交叉核对是否符合标准,对不确定是否纳入的文献由第3名研究者仔细阅读后决定。

纳入的文献资料包括:(1)基本信息:文章题目、第一作者、发表时间、国家/地区等;(2)研究特征:试验组及对照组的干预措施、研究对象例数、年龄、随访时间;(3)文献偏倚风险评价所需的关键信息;(4)所需的结局指标:试验组及对照组肝功能异常人数。

1.5 偏倚风险评价

RCTs的研究质量由2位研究者使用Cochrane系统评价员手册5.1推荐的评估偏倚风险的工具进行评估[19,20],使用RevMan 5.3绘制偏倚风险相关图表。该工具包括随机方法、分配隐藏、盲法(研究者和受试者)、盲法(结局测量者)、结局数据完整、选择性报告结果和其他偏倚来源。每个方面可进一步归类为低风险、高风险或不明确风险。

1.6 统计学方法

本研究采用Stata 14软件进行数据的分析比较,选用相对危险度(RR)及95%可信区间(95%CI)作为二分类变量分析统计量。使用不一致性检验检测直接证据和间接证据之间是否存在不一致,若P>0.05,则认为不存在总体不一致性,反之则存在总体不一致性;若假设检验比值比(ROR)的95%CI包含1,则认为不存在局部不一致性,反之则存在局部不一致性[21]。通过预测区间图判断异质性,若95%CI和95%预测区间(95%PrI)均包含1或均不包含1则认为无统计学异质性,反之则存在统计学异质性。通过计算累积排序曲线(SUCRA)下的面积评价不同他汀对肝功能的影响,SUCRA值越高,则他汀对肝功能的影响越小,成为最优的可能性越大[22]。以P<0.05为差异有统计学意义。

2 结果
2.1 文献筛选及结果

经检索,共纳入46篇文献[23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68],54 499例患者,其中包含6种药物:阿托伐他汀(21篇文献[23,25,30,32,34,37,39,40,44,45,46,47,49,51,56,58,59,60,61,62,65])、瑞舒伐他汀(10篇文献[35,36,38,41,42,43,49,56,57,60])、辛伐他汀(10篇文献[24,28,29,50,52,54,55,58,59,66])、普伐他汀(7篇文献[27,30,33,48,51,67,68])、洛伐他汀(4篇文献[26,53,63,64])、匹伐他汀(3篇文献[31,33,39])。文献筛选流程见图1,文献基线特征见表1,文献偏倚风险评价见图2图3

点击查看大图
图1
文献筛选流程图
Figure 1
Literature screening process
点击查看大图

注:RCTs=随机对照试验

图1
文献筛选流程图
Figure 1
Literature screening process
点击查看大图
图2
纳入研究的偏倚风险评价总体结果
Figure 2
Bias risk assessment results of included RCTs
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图2
纳入研究的偏倚风险评价总体结果
Figure 2
Bias risk assessment results of included RCTs
点击查看大图
图3
纳入研究的偏倚风险评价结果
Figure 3
Bias risk assessment results of included RCTs
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图3
纳入研究的偏倚风险评价结果
Figure 3
Bias risk assessment results of included RCTs
点击查看表格
表1

纳入文献的基本特征

Table 1

Basic information of included RCTs

表1

纳入文献的基本特征

Table 1

Basic information of included RCTs

第一作者发表时间(年)国家/地区研究对象干预措施研究对象例数(例)年龄(岁)随访时间结局指标肝功能异常人数(例)
试验组对照组试验组对照组试验组对照组试验组对照组
种类剂量种类剂量
XUE[23]2020中国脑白质疏松患者阿托伐他汀10 mg/20 mg /40 mg常规治疗-20120157.1658.338周00
SAPEY[24]2019英国肺炎患者辛伐他汀80 mg安慰剂-171078.183.87 d①③00
HARI[25]2018印度类固醇抵抗性肾病综合征患者阿托伐他汀10 mg安慰剂-1414121212个月10
WANG[26]2017中国携带有HBV的老年冠心病者洛伐他汀20 mg常规治疗-404067.368.13个月20
COSTANTINE[27]2016美国先兆子痫高危孕妇普伐他汀10 mg安慰剂-111027306.5~8.5个月00
ABRALDES[28]2016西班牙静脉曲张破裂出血中恢复的肝硬化患者辛伐他汀初始剂量20 mg,目标剂量40 mg安慰剂-707957.4257.6224个月10
VIASUS[29]2015西班牙社区获得性肺炎患者辛伐他汀20 mg安慰剂-191563764 d23
DEEDWANIA[30]2015美国老年冠心病患者伴或不伴慢性肾病(CKD)阿托伐他汀80 mg普伐他汀40 mg43342572.472.612个月191
BRAAMSKAMP[31]2015多中心6~17岁的高脂血症患者匹伐他汀1 mg /2 mg /4 mg安慰剂-792710.610.412周10
TERAMOTO[32]2014日本高低密度脂蛋白胆固醇患者阿托伐他汀10 mg安慰剂-2728495012周10
SPONSELLER[33]2014美国患有原发性高脂血症或混合性(合并)血脂异常的老年患者匹伐他汀4 mg普伐他汀40 mg16416458.857.012周46
MANDAL[34]2014英国支气管扩张症并有2次或2次以上胸部感染患者阿托伐他汀80 mg安慰剂-242960.259.16个月10
EL GENDY[35]2014埃及脓毒症患者瑞舒伐他汀20 mg标准治疗-5454353714 d117
KUMAR[36]2012苏格兰类风湿关节炎患者瑞舒伐他汀10 mg安慰剂-232562.2261.726个月10
MUSCARI[37]2011意大利缺血性脑卒中患者阿托伐他汀80 mg安慰剂-313174.975.67 d00
HSIA[38]2011美国超敏C反应蛋白≥2 mg/L且LDL-C<130 mg/dl的健康人瑞舒伐他汀20 mg安慰剂-8 1548 15066662~5年12284
GUMPRECHT[39]2011跨国2型糖尿病合并混合型血脂异常患者匹伐他汀初始计量2 mg,目标剂量4 mg阿托伐他汀初始计量10 mg,目标剂量20 mg27513759.159.812周10
BAYS[40]2011美国超重伴有混合血脂异常患者阿托伐他汀20 mg安慰剂-313154.354.98周00
CHAN[41]2010加拿大主动脉狭窄患者瑞舒伐他汀40 mg安慰剂-13413558.057.93~5年23
AVIS[42]2010北美及欧洲多中心患有家族性高胆固醇血症的青少年瑞舒伐他汀5 mg /10 mg /20 mg安慰剂-1304614.3514.3212周30
RIDKER[43]2008美国LCL-C<130 mg/dl、CRP≥2.0 mg/L的看似健康的人瑞舒伐他汀20 mg安慰剂-8 9018 9016666平均1.9年,最多5年2317
NEWMAN[44]2008英国和爱尔兰无冠心病病史的2型糖尿病患者阿托伐他汀10 mg安慰剂-1 4281 41061.561.83.9年118
LEWANDOWSKI[45]2008波兰急性冠脉综合征患者阿托伐他汀20 mg不使用阿托伐他汀-393954556周00
CRISOSTOMO[46]2008巴西轻度高血压、高胆固醇血症老年患者阿托伐他汀20 mg安慰剂-24237275.830 d00
CHUNG[47]2008美国健康受试者阿托伐他汀40 mg安慰剂-131351.853.68周10
LEWIS[48]2007多中心慢性、代偿性肝病伴高胆固醇血症患者普伐他汀80 mg安慰剂-16016049.849.937周55
KYEONG[49]2007韩国急性冠脉综合征或缺血性脑卒中患者瑞舒伐他汀10 mg阿托伐他汀20 mg777863.563.440周11
DUMAN[50]2007美国亚临床甲状腺功能减退症患者辛伐他汀20 mg不治疗-201937358个月00
NISSEN[51]2005美国多中心需要冠状动脉造影的患者阿托伐他汀80 mg普伐他汀40 mg25324955.856.618个月75
LYNCH[52]2005美国动脉瘤性蛛网膜下腔出血患者辛伐他汀80 mg安慰剂-1920654714 d21
CLAUSS[53]2005多中心杂合子家族性高胆固醇血症少女洛伐他汀初始剂量20 mg,目标剂量40 mg安慰剂-3519151524周00
MELANI[54]2003美国多中心高胆固醇血症患者辛伐他汀10 mg /20 mg /40 mg /80 mg安慰剂-34592--12周00
BAYS[55]2004多中心高胆固醇血症患者辛伐他汀10 mg /20 mg /40 mg /80 mg安慰剂-61114654.95612周71
SCHNECK[56]2003美国及加拿大多中心高胆固醇血症患者瑞舒伐他汀5 mg /10 mg /20 mg /40 mg /80 mg阿托伐他汀10 mg /20 mg /40 mg /80 mg20916556.9356.466周12
SAITO[57]2003日本空腹160 mg/dl<LDL-C<220 mg/dl、三酰甘油<300 mg/dl患者瑞舒伐他汀1 mg /2.5 mg /5 mg /10 mg /20 mg /40 mg安慰剂-971554.7558.506周00
KADIKOYLU[58]2003土耳其无冠心病的原发性高胆固醇血症患者阿托伐他汀初始剂量10 mg,未达目标者增为20 mg辛伐他汀初始剂量10 mg,未达目标者增为20 mg3526535424周00
WU[59]2002亚洲多中心160 mg/dl<LDL-C<250 mg/dl、三酰甘油<400 mg/dl患者阿托伐他汀初始剂量10 mg,目标剂量20 mg辛伐他汀初始剂量10 mg,目标剂量20 mg767554.755.716周01
OLSSON[60]2002多中心高胆固醇血症患者瑞舒伐他汀5 mg /10 mg阿托伐他汀10 mg26814057.0558.2052周02
WANG[61]2001中国台湾160 mg/dl<LDL-C<250 mg/dl患者阿托伐他汀10 mg安慰剂-262866.865.48周00
SCHWARTZ[62]2001多国多中心18岁及以上不稳定型心绞痛或非q波急性心肌梗死患者阿托伐他汀80 mg安慰剂-1 5381 548656516周389
DOWNS[63]2001美国一般健康的中老年人洛伐他汀初始剂量20 mg,目标剂量20~40 mg安慰剂-3 2423 24858585.2年1811
FONG[64]1997美国原发性高胆固醇血症的非裔美国人洛伐他汀20 mg安慰剂-221953.351.310周00
NAWROCKI[65]1995加拿大美国多中心原发性高胆固醇血症患者阿托伐他汀2.5 mg/5 mg/10 mg/20 mg/40 mg/80 mg安慰剂-671256546周10
KEECH[66]1994英国冠心病风险增加的人辛伐他汀20 mg/40 mg安慰剂-41420763.463.7中位3~4年178
BEHOUNEK[67]1994多国非胰岛素依赖型糖尿病和高胆固醇血症患者普伐他汀10 mg安慰剂-16715858.358.316周10
CONTACOS[68]1993澳大利亚混合性高脂血症患者普伐他汀40 mg安慰剂-101152646周00

注:①=ALT和/或AST≥3ULN,②=ALT和/或AST≥2ULN,③=总胆红素≥2ULN,④=ALT和/或AST≥5ULN,⑤=ALT和/或AST均正常;-为无此数值;ALT=丙氨酸氨基转移酶,AST=天冬氨酸氨基转移酶,ULN=正常上限值,LDL-C=低密度脂蛋白胆固醇,CRP=C反应蛋白

2.2 网络证据图

各比较结果的干预措施的网络关系见图4

点击查看大图
图4
纳入研究的网络证据图
Figure 4
Network diagram of included studies
点击查看大图

注:Placebo=安慰剂,Atorvastatin=阿托伐他汀,Rosuvastatin=瑞舒伐他汀,Simvastatin=辛伐他汀,Pravastatin=普伐他汀,Pitavastatin=匹伐他汀,Lovastatin=洛伐他汀,A为不同他汀类药物(简称他汀)之间的网络证据图,B为不同代谢途径他汀之间的网络证据图,C为不同亲脂性他汀之间的网络证据图,D为不同剂量他汀之间的网络证据图

图4
纳入研究的网络证据图
Figure 4
Network diagram of included studies
2.3 网状Meta分析结果
2.3.1 不同他汀之间肝功能异常发生率比较

不一致性检验结果提示,不存在总体不一致性(χ2=2.82,P=0.727)和局部不一致性(见图5)。直接比较可见各研究间无统计学异质性(见图6)。网状Meta分析结果显示,阿托伐他汀肝功能异常发生率高于瑞舒伐他汀〔RR=1.70,95%CI(1.04,2.78)〕、普伐他汀〔RR=2.19,95%CI(1.06,4.52)〕,阿托伐他汀〔RR=2.40,95%CI(1.54,3.73)〕、瑞舒伐他汀〔RR=1.41,95%CI(1.11,1.79)〕肝功能异常发生率高于安慰剂,差异均有统计学意义(P<0.05,见图6)。SUCRA对不同他汀的排序结果为安慰剂(77.2%)>匹伐他汀(70.9%)>普伐他汀(64.1%)>辛伐他汀(60.7%)>瑞舒伐他汀(40.4%)>洛伐他汀(31.6%)>阿托伐他汀(5.1%)。

点击查看大图
图5
不同他汀类药物之间不一致性检验
Figure 5
Inconsistency plot for the effect of different statins on liver function
点击查看大图

注:Pl=安慰剂,A=阿托伐他汀,R=瑞舒伐他汀,S=辛伐他汀,Pr=普伐他汀,Pi=匹伐他汀,L=洛伐他汀

图5
不同他汀类药物之间不一致性检验
Figure 5
Inconsistency plot for the effect of different statins on liver function
点击查看大图
图6
不同他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 6
Predictive intervals plot of the effect of different statins on liver function
点击查看大图
图6
不同他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 6
Predictive intervals plot of the effect of different statins on liver function
2.3.2 不同代谢途径他汀之间比较

按照他汀代谢途径对其进行分类[69]:通过细胞色素P450氧化酶(CYP450酶)进行代谢的他汀(CYP450):洛伐他汀[26,53,63,64]、辛伐他汀[24,28,29,50,52,54,55,66]、阿托伐他汀[23,25,30,32,34,37,39,40,44,45,46,47,49,51,56,60,61,62,65];不通过CYP450酶进行代谢的他汀(非CYP450):普伐他汀[27,30,48,51,67,68]、匹伐他汀[31,39]、瑞舒伐他汀[35,36,38,41,42,43,49,56,57,60]。不一致性检验结果提示,不存在总体不一致性(χ2=2.01,P=0.156)和局部不一致性〔ROR=1.96,95%CI(1.00,4.83)〕。直接比较可见各研究间无统计学异质性(见图7)。网状Meta分析结果显示,CYP450肝功能异常发生率高于安慰剂,差异有统计学意义〔RR=1.87,95%CI(1.34,2.63),P<0.05,见图7〕。SUCRA对不同他汀的排序结果为安慰剂(95.6%)>非CYP450(51.9%)>CYP450(2.6%)。

点击查看大图
图7
不同代谢途径他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 7
Predictive intervals plot of the effects of statins with different metabolic pathways on liver function
点击查看大图

注:CYP450=通过细胞色素P450氧化酶进行代谢的他汀,non-CYP450=不通过细胞色素P450氧化酶进行代谢的他汀

图7
不同代谢途径他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 7
Predictive intervals plot of the effects of statins with different metabolic pathways on liver function
2.3.3 不同性质他汀之间比较

按照他汀不同性质对其进行分类[69]:水溶性他汀:普伐他汀[27,30,33,48,51,67,68]、瑞舒伐他汀[35,36,38,41,42,43,49,56,57,60];脂溶性他汀:阿托伐他汀[23,25,30,32,34,37,40,44,45,46,47,49,51,56,60,61,62,65]、洛伐他汀[26,53,63,64]、辛伐他汀[24,28,29,50,52,54,55,66]、匹伐他汀[31,33]。不一致性检验结果提示,不存在总体不一致性(χ2=0.66,P=0.417)和局部不一致性〔ROR=1.41,95%CI(1.00,3.15)〕。直接比较可见各研究间无统计学异质性(见图8)。网状Meta分析结果显示,脂溶性他汀肝功能异常发生率高于安慰剂,差异有统计学意义〔RR=1.81,95%CI(1.30,2.51),P<0.05,见图8〕。SUCRA对不同他汀的排序结果为安慰剂(97.4%)>水溶性(48.7%)>脂溶性(3.9%)。

点击查看大图
图8
不同亲脂性他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 8
Predictive intervals plot of the effect of different lipophilic statins on liver function
点击查看大图

注:Hysrophilic=水溶性他汀,Lipophilic=脂溶性他汀

图8
不同亲脂性他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 8
Predictive intervals plot of the effect of different lipophilic statins on liver function
2.3.4 不同剂量他汀之间比较

按照他汀治疗时LDL-C降低程度分为高强度他汀(LDL-C降低≥50%)、中强度他汀(LDL-C降低30%~49%)和低强度他汀(LDL-C降低<30%)[70]。高强度他汀:阿托伐他汀-H 40~80 mg[23,30,34,37,47,51,56,62,65]、瑞舒伐他汀-H 20~80 mg[35,38,41,42,43,56,57];中强度他汀:阿托伐他汀-M 10~20 mg[23,25,32,40,44,45,46,49,56,60,61,65]、瑞舒伐他汀-M 5~10 mg[36,42,49,56,57,60]、辛伐他汀-M 20~80 mg[24,29,50,52,66]、普伐他汀-M 40~80 mg[30,33,48,51,68]、匹伐他汀-M 1~4 mg[31,33];低强度他汀:普伐他汀-L 10 mg[27,67]、洛伐他汀-L 20 mg[26,64]。不一致性检验结果提示,不存在总体不一致性(χ2=2.13,P=0.995)和局部不一致性(见图9)。直接比较可见各研究间无统计学异质性(见图10)。阿托伐他汀-H肝功能异常发生率高于匹伐他汀-M〔RR=4.15,95%CI(1.07,16.08)〕、普伐他汀-M〔RR=2.87,95%CI(1.32,6.24)〕、辛伐他汀-M〔RR=3.50,95%CI(1.45,8.49)〕、瑞舒伐他汀-H〔RR=2.39,95%CI(1.30,4.39)〕、瑞舒伐他汀-M〔RR=4.49,95%CI(1.29,15.60)〕,阿托伐他汀-H〔RR=3.44,95%CI(1.95,6.04)〕、瑞舒伐他汀-H〔RR=1.44,95%CI(1.13,1.82)〕肝功能异常发生率高于安慰剂,差异均有统计学意义(P<0.05,见图10)。SUCRA对不同他汀的排序结果为瑞舒伐他汀-M(76.4%)>匹伐他汀-M(71.6%)>安慰剂(69.1%)>辛伐他汀-M(67.5%)>普伐他汀-M(55.1%)>普伐他汀-L(41.7%)>瑞舒伐他汀-H(40.9%)>阿托伐他汀-M(37.9%)>洛伐他汀-L(31%)>阿托伐他汀-H(8.8%)。

点击查看大图
图9
不同剂量他汀类药物之间不一致性检验
Figure 9
Inconsistency plot for effect of different doses of statins on liver function
点击查看大图

注:Pl=安慰剂,A-M=阿托伐他汀-M,A-H=阿托伐他汀-H,R-M=瑞舒伐他汀-M,R-H=瑞舒伐他汀-H,S-M=辛伐他汀-M,Pr-L=普伐他汀-L,Pr-M=普伐他汀-M,Pi-M=匹伐他汀-M,L-L=洛伐他汀-L

图9
不同剂量他汀类药物之间不一致性检验
Figure 9
Inconsistency plot for effect of different doses of statins on liver function
点击查看大图
图10
不同剂量他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 10
Predictive intervals plot of the effect of different doses of statins on liver function
点击查看大图

注:Atorva-M=阿托伐他汀-M,Atorva-H=阿托伐他汀-H,Rosuva-M=瑞舒伐他汀-M,Rosuva-H=瑞舒伐他汀-H,Simva-M=辛伐他汀-M,Prava-L=普伐他汀-L,Prava-M=普伐他汀-M,Pitava-M=匹伐他汀-M,Lova-L=洛伐他汀-L

图10
不同剂量他汀类药物之间肝功能异常发生率比较的预测区间图
Figure 10
Predictive intervals plot of the effect of different doses of statins on liver function
3 讨论

他汀是目前应用最广泛的降脂药物,是治疗患者血脂异常、心脑血管疾病一级和二级预防最有效的方案。多项研究显示他汀每降低1 mmol/L低密度脂蛋白胆固醇(LDL-C),每年心脑血管事件发生率可降低20%,全因死亡率降低10%,卒中的相对风险降低近20%[10,15,71,72]。美国心脏病学会(ACC)/美国心脏学会(AHA)指南以及其他国际指南确立了他汀在降低动脉粥样硬化心脑血管病风险方面的首要地位[71,73]。但是他汀使用后出现的不良反应尤其是肝功能异常使其依从性受到一定程度限制。研究显示在心脑血管疾病一级和二级预防中停用他汀会明显增加心脑血管发病率及全因死亡率。HO等[74]对15 767名非致死性冠状动脉疾病患者随访4.1年,发现与坚持他汀治疗患者相比,不坚持治疗患者(服用他汀天数覆盖比例<80%)心血管住院率〔HR=1.35,95%CI(1.21,1.50)〕、心血管死亡率〔HR=1.62,95%CI(1.24,2.13)〕、冠状动脉血运重建〔HR=1.11,95%CI(1.01,1.22)〕、全因死亡率〔HR=1.85,95%CI(1.63,2.09)〕均明显升高。因此明确不同他汀对肝功能的影响很大程度影响其在临床的应用。但既往的研究中没有系统的多方面比较和评价不同他汀对肝功能的影响,因此本研究使用网状Meta分析,通过对RCTs进行直接和间接比较,旨在了解不同他汀对肝功能的影响,希望对临床使用他汀类药物提供帮助。

本研究通过对不同他汀行网状Meta分析显示,阿托伐他汀肝功能异常发生率高于瑞舒伐他汀、普伐他汀,阿托伐他汀、瑞舒伐他汀高于安慰剂,验证了NACI等[75]结果。他汀诱导的肝毒性可能源于广泛的肝脏代谢和亲脂性,剂量增高也可能导致肝损伤的风险增加[76],故本研究按照代谢途径、亲脂性、剂量对他汀分类进一步行网状Meta分析。

CYP450与CYP450酶抑制剂联用时,后者可抑制他汀的代谢,引起患者体内他汀浓度偏高,导致出现肝功能异常等不良反应,这一药物之间的相互作用已被充分认识[77,78],所以CYP450肝功能异常发生率较高。本研究结果证实了这一观点。因此在使用他汀时应慎重联用CYP450酶抑制剂。

脂溶性他汀主要通过被动扩散进入肝细胞,其亲脂性导致了有效的肝分流,同时也可导致其容易进入非肝细胞;水溶性他汀主要是由载体介导的广泛摄取进入肝细胞,故该类药物具有较高的肝选择性[69],因此脂溶性他汀出现不良反应尤其是肌肉疾病的概率高于水溶性他汀[15,79]。但是很少有研究探讨不同亲脂性他汀对肝功能的影响是否不同,本研究对此进行网状Meta分析,显示脂溶性他汀肝功能异常发生率较高。

对26个RCTs中17万名参与者的数据进行研究的Meta分析表明,使用强化他汀进一步降低LDL-C,可进一步减少心脑血管病的发生[4]。但是使用大剂量他汀强化治疗取得更好的治疗效果的同时肝功能障碍等不良反应也将显著增加[80],剂量-反应效应明显[81]。本研究对不同剂量的他汀进行比较,探讨不同剂量他汀对肝功能的影响,结果显示高强度他汀强化治疗(阿托伐他汀40~80 mg、瑞舒伐他汀20~80 mg)肝功能异常发生率高于低剂量他汀常规治疗(阿托伐他汀10~20 mg、瑞舒伐他汀5~10 mg),验证了以上观点。建议高心血管病风险患者根据2016年欧洲血脂异常治疗指南应用强化他汀治疗将LDL-C降至1.8 mmol/L以下,同时在用药初期对肝功能进行监测[82]

为更好地实现心脑血管病一、二级预防,需要在取得他汀良好的治疗效果的同时尽可能避免出现肝功能异常,应结合患者种族、血脂情况、共病、目前使用药物等选择不同他汀治疗,尽可能选择水溶性他汀治疗,同时注意联合用药,避免使用CYP450酶抑制剂。在治疗前、治疗初3个月、增加剂量或更改用药时监测肝酶指标,不建议长期常规监测肝功能,但需要对有症状患者进行持续监测。对于ALT升高≥3ULN的患者,减少他汀的剂量或考虑替代药物治疗[15,83],尽量避免使用更易造成肝损害的他汀。本研究纳入文献较多且总体质量尚可,可以为临床选择他汀类药物及综合治疗提供帮助,但部分文献质量不高、一些干预措施纳入研究人数较少,仍需开展更多高质量的RCTs对本研究结果进行验证。

利益冲突
利益冲突

本文无利益冲突。

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