郭春燕 萬(wàn)秀明 譚蘭
[摘要] 目的 探討漢族人群中代謝綜合征(Mets)及其各組分(體質(zhì)量超標(biāo)和(或)肥胖、高糖血癥、高血壓、血脂紊亂)與顱內(nèi)動(dòng)脈粥樣硬化性狹窄(ICAS)的相關(guān)性。
方法 納入2014年1月—2018年6月在青島市市立醫(yī)院神經(jīng)內(nèi)科住院和健康查體中心體檢的漢族人1 009例,應(yīng)用2004年中華醫(yī)學(xué)會(huì)糖尿病學(xué)分會(huì)公布的Mets標(biāo)準(zhǔn)診斷Mets,采用華法林-阿司匹林治療癥狀性顱內(nèi)動(dòng)脈狹窄的隨機(jī)對(duì)照研究(WASID)方法測(cè)定ICAS程度。根據(jù)是否存在ICAS分為ICAS組190例和非狹窄組819例。采用多因素Logistic回歸分析Mets及其組分與ICAS的相關(guān)性;不同Mets組分?jǐn)?shù)量者ICAS發(fā)生率的比較采用Cochran-Armitage趨勢(shì)檢驗(yàn)。
結(jié)果 總?cè)巳褐蠱ets與ICAS顯著相關(guān)(OR=1.59,95%CI=1.15~2.20,P=0.005);隨著Mets組分?jǐn)?shù)量的增多,ICAS發(fā)生率增高(χ2=8.84,P<0.01);Mets組分中的高糖血癥與ICAS顯著相關(guān)(OR=1.43,95%CI=1.03~1.98,P=0.032)。亞組分析提示,女性(OR=2.17,95%CI=1.27~3.70,P=0.005)和老年(OR=1.77,95%CI=1.22~2.57,P=0.002)人群Mets與ICAS顯著相關(guān),且隨著Mets組分?jǐn)?shù)量的增多ICAS發(fā)生率增高(χ2=11.12、12.28,P<0.001)。此外,女性高糖血癥與ICAS顯著相關(guān)(OR=1.86,95%CI=1.06~3.27,P=0.031),老年人高血壓與ICAS顯著相關(guān)(OR=2.41,95%CI=1.17~4.97,P=0.017)。
結(jié)論 Mets與ICAS顯著相關(guān),ICAS的發(fā)生率隨著Mets組分?jǐn)?shù)量增多而增高,Mets組分中的高糖血癥與ICAS顯著相關(guān)。性別和年齡對(duì)Mets與ICAS的關(guān)系有影響。
[關(guān)鍵詞] 代謝綜合征;顱內(nèi)動(dòng)脈硬化;危險(xiǎn)因素;數(shù)據(jù)相關(guān)性
[中圖分類號(hào)] R589;R743.1
[文獻(xiàn)標(biāo)志碼] A
[文章編號(hào)] 2096-5532(2021)05-0712-05
doi:10.11712/jms.2096-5532.2021.57.186
[開(kāi)放科學(xué)(資源服務(wù))標(biāo)識(shí)碼(OSID)]
[網(wǎng)絡(luò)出版] https://kns.cnki.net/kcms/detail/37.1517.R.20211101.1334.006.html;2021-11-02 13:32:02
ASSOCIATION BETWEEN METABOLIC SYNDROME AND INTRACRANIAL ATHEROSCLEROTIC STENOSIS
GUO Chunyan, WAN Xiuming, TAN Lan
(Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266011, China)
[ABSTRACT] Objective To investigate the association of metabolic syndrome (Mets) and its components (overweight and/or obesity, hyperglycemia, hypertension, dyslipidemia) with intracranial arterial stenosis (ICAS) in the Chinese Han population.
Methods A total of 1 009 Chinese Han individuals who were hospitalized in Department of Neurology or underwent physical examination in Health Examination Center, Qingdao Municipal Hospital, from January 2014 to June 2018 were enrolled. Mets was diagnosed based on the diagnostic criteria for Mets published by Chinese Diabetes Society of Chinese Medical Association in 2004, and the severity of ICAS was measured by the method based on the Warfarin-Aspirin Symptomatic Intracranial Disease study. Accor-
ding to the presence or absence of ICAS, the individuals were divided into ICAS group with 190 individuals and non-stenosis group with 819 individuals. A multivariate Logistic regression analysis was used to investigate the association of Mets and its components with ICAS, and the Cochran-Armitage trend test was used to compare the incidence rate of ICAS between individuals with different numbers of Mets components.
Results In the overall population, Mets was significantly associated with ICAS (OR=1.59,95%CI=1.15-2.20,P=0.005), and the incidence rate of ICAS increased with the increase in the number of Mets components (χ2=8.84,P<0.01). Among the Mets components, hyperglycemia was significantly associated with ICAS (OR=1.43,95%CI=1.03-1.98,P=0.032). The subgroup analysis showed that Mets was significantly associated with ICAS in women (OR=2.17,95%CI=1.27-3.70,P=0.005) and the elderly (OR=1.77,95%CI=1.22-2.57,P=0.002), and the incidence rate of ICAS increased with the increase in the number of Mets components in women and the elderly (χ2=11.12, 12.28;P<0.001). In addition, hyperglycemia was significantly associated with ICAS in women (OR=1.86,95%CI=1.06-3.27,P=0.031), and hypertension was significantly associated with ICAS in the elderly (OR=2.41,95%CI=1.17-4.97,P=0.017).
Conclusion Mets is significantly asso-
ciated with ICAS, and the incidence rate of ICAS increases with the increase in the number of Mets components. Among Mets components, hyperglycemia is significantly associated with ICAS. Sex and age have an impact on the association between Mets and ICAS.
[KEY WORDS] metabolic syndrome; intracranial arterio-
sclerosis; risk factor; correlation of data
顱內(nèi)動(dòng)脈粥樣硬化性狹窄(ICAS)是亞洲人缺血性卒中的主要原因[1-2]。代謝綜合征(Mets)是數(shù)種代謝性成分異常集結(jié)的病理狀態(tài),包括肥胖、高血壓、血脂紊亂和糖代謝異常等,它與冠狀動(dòng)脈、頸動(dòng)脈粥樣硬化發(fā)生密切關(guān)聯(lián)[3-5],也是心、腦血管疾病的危險(xiǎn)因素[6-7]。國(guó)外研究顯示,Mets、糖尿病、高血壓、血脂紊亂與ICAS相關(guān)[8-12],但不同研究的結(jié)果不盡相同。本文研究漢族人群中Mets及其各組分(體質(zhì)量超標(biāo)和(或)肥胖、高糖血癥、高血壓、血脂紊亂)與ICAS的關(guān)系,以及性別和年齡對(duì)其關(guān)系的影響,為臨床控制Mets降低ICAS發(fā)生的風(fēng)險(xiǎn)提供理論依據(jù)。
1 資料和方法
1.1 研究對(duì)象
研究對(duì)象為2014年1月—2018年6月在青島市市立醫(yī)院神經(jīng)內(nèi)科住院和在健康查體中心體檢者1 009人。納入標(biāo)準(zhǔn):①年齡40歲及以上;②完成顱腦磁共振成像和腦血管磁共振成像及相關(guān)實(shí)驗(yàn)室檢查。排除標(biāo)準(zhǔn):①非漢族者;②有心房顫動(dòng)、心源性栓塞或血管性疾病并已行冠狀動(dòng)脈旁路移植術(shù)治療者;③有顱內(nèi)外動(dòng)脈夾層、動(dòng)脈炎、煙霧病、肌纖維發(fā)育不良者;④有感染、腫瘤、慢性肝病、腎功能不全者;⑤既往有卒中史者。
1.2 Mets診斷標(biāo)準(zhǔn)
采用2004年中華醫(yī)學(xué)會(huì)糖尿病學(xué)分會(huì)公布的中國(guó)人Mets診斷標(biāo)準(zhǔn)[13],具備以下4個(gè)組分的3個(gè)或全部者可以診斷為Mets:①體質(zhì)量超標(biāo)和(或)肥胖(體質(zhì)量指數(shù)(BMI)≥25 kg/m2);②高糖血癥:空腹血糖≥6.1 mmol/L和(或)餐后2 h血糖≥7.8 mmol/L,和(或)已經(jīng)確診為糖尿病并治療者;③高血壓:收縮壓/舒張壓≥18.7/12 kPa,和(或)已確診高血壓并治療者;④血脂紊亂:空腹血清三酰甘油≥1.7 mmol/L和(或)空腹血清高密度脂蛋白膽固醇<0.9 mmol/L(男)、<1.0 mmol/L(女)者。
1.3 數(shù)據(jù)采集
由經(jīng)驗(yàn)豐富的神經(jīng)內(nèi)科醫(yī)生采集研究對(duì)象的人口統(tǒng)計(jì)學(xué)資料(性別、年齡)、血管危險(xiǎn)因素(高血壓史、糖尿病史、心房顫動(dòng)史、既往卒中史、吸煙飲酒史、腫瘤史等)。采集所有研究對(duì)象空腹靜脈血用于檢驗(yàn)血糖和血脂。身高體質(zhì)量測(cè)量按照標(biāo)準(zhǔn)測(cè)量要求進(jìn)行,計(jì)算BMI(BMI=體質(zhì)量(kg)/身高(m)2)。采用歐姆龍電子血壓計(jì)測(cè)量研究對(duì)象安靜休息狀態(tài)10 min后血壓,測(cè)3次取平均值。
1.4 影像學(xué)評(píng)估
應(yīng)用3.0 T磁共振掃描儀行顱腦和腦血管磁共振成像檢查。磁共振成像參數(shù):重復(fù)時(shí)間/回波時(shí)間(20~25)/(2~3) ms,偏轉(zhuǎn)角度15°,矩陣220 mm×220 mm,層厚1.2 mm,層間距0.6 mm。應(yīng)用時(shí)間飛躍法血管成像技術(shù)評(píng)估顱內(nèi)動(dòng)脈狀態(tài)。應(yīng)用頸動(dòng)脈彩色多普勒超聲檢查排除顱外動(dòng)脈粥樣硬化性狹窄[14]。所有圖像均由兩位經(jīng)驗(yàn)豐富、對(duì)受檢者的臨床信息不知情的放射科醫(yī)生閱讀,出現(xiàn)分歧時(shí)再咨詢第三位閱片者。根據(jù)華法林-阿司匹林治療癥狀性顱內(nèi)動(dòng)脈狹窄隨機(jī)對(duì)照研究(WASID)的方法測(cè)定ICAS程度[15]。ICAS被定義為一條或數(shù)條腦動(dòng)脈直徑狹窄≥50%,包括大腦中動(dòng)脈M1和M2段、大腦前動(dòng)脈A1 和A2段、大腦后動(dòng)脈P1和P2段、椎動(dòng)脈、基底動(dòng)脈、頸內(nèi)動(dòng)脈顱內(nèi)段等。
1.5 統(tǒng)計(jì)學(xué)分析
采用SPSS 23.0軟件進(jìn)行統(tǒng)計(jì)學(xué)處理。符合正態(tài)分布計(jì)量資料數(shù)據(jù)以±s表示,數(shù)據(jù)間比較采用Kruskal-Wallis方法;偏態(tài)分布計(jì)量資料采用M(P25,P75)表示,數(shù)據(jù)間比較采用Kruskal-Wallis方法。計(jì)數(shù)資料以頻數(shù)和百分率表示,數(shù)據(jù)間比較采用卡方檢驗(yàn)。Mets和Mets各組分與ICAS的相關(guān)性分析采用多因素Logistic回歸分析,并計(jì)算優(yōu)勢(shì)比(OR)以及95%可信區(qū)間(CI);Logistic回歸分析校正的因素包括年齡、性別、吸煙史、飲酒史、低密度脂蛋白膽固醇、本次是否新發(fā)腦血栓等。本研究中,年齡、低密度脂蛋白膽固醇為連續(xù)數(shù)值變量,余變量均為二分類變量;回歸分析中二分類變量以男性、無(wú)吸煙史、無(wú)飲酒史、無(wú)新發(fā)腦血栓組、非Mets組為參照。不同Mets組分?jǐn)?shù)量(Mets診斷標(biāo)準(zhǔn)共包括4個(gè)組分,故Mets組分?jǐn)?shù)量為0~4)者ICAS發(fā)生率比較采用Cochran-Armitage趨勢(shì)檢驗(yàn)。雙側(cè)檢驗(yàn)P<0.05為差異有統(tǒng)計(jì)學(xué)意義。
2 結(jié)? 果
2.1 ICAS組與非狹窄組人口統(tǒng)計(jì)學(xué)和臨床資料的比較
本文1 009例研究對(duì)象中,男623例(61.7%),女386例(38.3%),年齡40~97歲,中位數(shù)年齡為66歲;Mets組有416例(41.2%),非Mets組有593例(58.8%);ICAS組190例(18.8%),非狹窄組819例(81.2%)。Mets組ICAS 96例(23.08%),非Mets組ICAS 94例(15.85%),Mets組與非Mets組的ICAS發(fā)生率比較差異有統(tǒng)計(jì)學(xué)意義(χ2=8.35,P<0.01)。ICAS組與非狹窄組年齡、性別、舒張壓、BMI、吸煙史例數(shù)、腦血栓例數(shù)、三酰甘油、高密度脂蛋白膽固醇、低密度脂蛋白膽固醇、Mets體質(zhì)量超標(biāo)和(或)肥胖組分及血脂紊亂組分病人的構(gòu)成比比較差異無(wú)顯著性(P>0.05);ICAS組飲酒史、高血壓史、糖尿病史例數(shù)及收縮壓、空腹血糖、Mets高糖血癥和高血壓組分病人構(gòu)成比均顯著高于非狹窄組(χ2=5.77~11.01,H=4.75、10.68,P<0.05)。見(jiàn)表1。
2.2 總?cè)巳褐蠱ets與ICAS的關(guān)系
多因素Logistic回歸分析顯示,總?cè)巳褐蠱ets(OR=1.59,95%CI=1.15~2.20,P=0.005)和飲酒史(OR=1.88, 95%CI=1.22~2.91,P=0.004)與ICAS發(fā)生顯著相關(guān)。Cochran-Armitage 趨勢(shì)檢驗(yàn)顯示,Mets組分?jǐn)?shù)量越多,ICAS發(fā)生率越高,差異有統(tǒng)計(jì)學(xué)意義(χ2=8.84,P<0.01)。見(jiàn)圖1。Mets各組分與ICAS關(guān)系的多因素Logistic回歸分析顯示,高糖血癥與ICAS顯著相關(guān)(OR=1.43,95%CI=1.03~1.98,P=0.032)。見(jiàn)表2、3。
2.3 不同性別和年齡分組Mets與ICAS的關(guān)系
亞組分析顯示,女性(OR=2.17,95%CI=1.27~3.70,P=0.005)和老年(OR=1.77,95%CI=1.22~2.57,P=0.002)人群Mets與ICAS顯著相關(guān),男性和非老年人群中未發(fā)現(xiàn)此關(guān)聯(lián)。Cochran-Armitage趨勢(shì)檢驗(yàn)顯示,女性(χ2=11.12,P<0.001)和老年(χ2=12.28,P<0.001)人群Mets組分?jǐn)?shù)量越多,ICAS發(fā)生率越高;在男性(χ2=1.18,P>0.05)和非老年(χ2=0.04,P>0.05)人群中未顯示此趨勢(shì)。Mets各組分與ICAS的多因素Logistic回歸分析顯示,女性高糖血癥(OR=1.86,95%CI=1.06~3.27,P=0.031)和老年人高血壓(OR=2.41,95%CI=1.17~4.97,P=0.017)與ICAS顯著相關(guān)。
3 討? 論
ICAS是亞洲人缺血性卒中的主要原因[3],而Mets與ICAS相關(guān),控制Mets可能降低ICAS發(fā)生的風(fēng)險(xiǎn)。有研究結(jié)果表明,Mets和顱內(nèi)動(dòng)脈粥樣硬化的相關(guān)性存在種族差異[16],因此,研究漢族人群Mets與ICAS的關(guān)系是十分必要的。研究已顯示,不同性別人群Mets發(fā)病率[17]及其與ICAS的相關(guān)性[18]可能存在差異;此外,年齡是ICAS的獨(dú)立危險(xiǎn)因素[19]。進(jìn)一步研究性別和年齡對(duì)Mets與ICAS關(guān)系的影響有重要意義。
本研究結(jié)果表明,Mets與ICAS密切相關(guān)。對(duì)缺血性卒中[8]和非缺血性卒中[9]人群的研究表明,Mets個(gè)體發(fā)生ICAS的風(fēng)險(xiǎn)更高。本研究中Mets組分?jǐn)?shù)量越多,ICAS發(fā)生率越高,與WANG等[20]的研究結(jié)果中具有5個(gè)Mets組分的病人發(fā)生無(wú)癥狀I(lǐng)CAS的風(fēng)險(xiǎn)比無(wú)Mets組分者高4倍相一致。WONG等[11]對(duì)至少有一項(xiàng)血管危險(xiǎn)因素的高風(fēng)險(xiǎn)人群研究表明,高血壓、糖尿病、高脂血癥是大腦中動(dòng)脈狹窄的相關(guān)因素。本研究?jī)H顯示高糖血癥與ICAS密切相關(guān),與LPEZ-CANCIO等[10]在居民中隨機(jī)抽樣研究結(jié)果一致。高糖血癥導(dǎo)致ICAS的機(jī)制可能如下。①長(zhǎng)期高糖血癥引發(fā)炎癥反應(yīng)和氧化應(yīng)激導(dǎo)致血管內(nèi)皮細(xì)胞受損[21],胰島素減少使載脂蛋白B和極低密度脂蛋白膽固醇積累[22],促進(jìn)動(dòng)脈粥樣硬化斑塊進(jìn)展。②生理?xiàng)l件下,胰島素通過(guò)PI3K/Akt通路發(fā)揮血管保護(hù)作用,MAPK通路對(duì)血管產(chǎn)生不利影響;胰島素抵抗時(shí),PI3K通路受損,對(duì)血管的不利作用大于保護(hù)作用[23]。③胰島素抵抗、舒張壓、肥胖和Mets組分?jǐn)?shù)量與動(dòng)脈擴(kuò)張性呈負(fù)相關(guān),可能降低動(dòng)脈擴(kuò)張性[24]。但也有研究認(rèn)為高糖血癥與ICAS無(wú)關(guān)[12]。此外,張艷玲等[25]對(duì)中國(guó)人群研究顯示飲酒與ICAS相關(guān)。本文研究結(jié)果
與之相似,可能與乙醇引發(fā)血脂紊亂和炎癥反應(yīng)促進(jìn)動(dòng)脈粥樣硬化有關(guān)[26-27]。但目前飲酒與動(dòng)脈粥樣硬化的關(guān)系國(guó)內(nèi)外無(wú)定論,需進(jìn)一步研究。
本文研究結(jié)果顯示,Mets與ICAS的相關(guān)性受性別影響,僅女性Mets與ICAS相關(guān),其機(jī)制尚不明確,可能與Mets女性雌激素的抗動(dòng)脈粥樣硬化作用受損有關(guān)[28-29]。在不同性別人群中,可能有不同的Mets組分參與了動(dòng)脈粥樣硬化過(guò)程,在男性和女性Mets人群中,高密度脂蛋白降低和血糖升高均與頸動(dòng)脈內(nèi)膜中層厚度增加相關(guān)[30]。而本研究?jī)H在女性中顯示高糖血癥和ICAS相關(guān),可能與Mets組分性狀基因位點(diǎn)在染色體上的分布存在性別差異有關(guān)[31]。尚需要更多的臨床研究探討不同性別人群Mets及其組分與ICAS的關(guān)系。
研究表明,年齡增長(zhǎng)是動(dòng)脈粥樣硬化發(fā)展的獨(dú)立危險(xiǎn)因素[19]。其機(jī)制可能是:衰老促進(jìn)炎癥反應(yīng)并影響細(xì)胞外基質(zhì)的合成使斑塊進(jìn)展[32];顱內(nèi)動(dòng)脈的抗氧化酶可抗動(dòng)脈粥樣硬化,但其酶活性在老年時(shí)顯著下降[33]。上述機(jī)制與高糖血癥導(dǎo)致ICAS的機(jī)制有重疊,這可能是本研究在老年人群中顯示Mets與ICAS相關(guān)的原因。既往研究認(rèn)為,高血壓是顱內(nèi)動(dòng)脈粥樣硬化的獨(dú)立危險(xiǎn)因素[19],但本研究?jī)H在老年人中顯示此關(guān)聯(lián)。
綜上所述,在漢族人群中Mets與ICAS密切相關(guān),通過(guò)飲食、生活習(xí)慣以及藥物等方式來(lái)控制Mets,尤其是控制女性高糖血癥和和老年人高血壓,可能有助于預(yù)防或延緩ICAS發(fā)生。本研究的不足之處在于:首先,這是一個(gè)橫斷面研究,只能探討Mets及其組分與ICAS之間的關(guān)聯(lián)性,結(jié)論尚需縱向研究來(lái)進(jìn)一步證實(shí);其次,本研究對(duì)象均是漢族人,這可能會(huì)限制研究結(jié)果推廣到其他種族。因此,本研究得出的結(jié)論尚需通過(guò)多中心研究、隊(duì)列研究進(jìn)行驗(yàn)證。
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(本文編輯 黃建鄉(xiāng))
青島大學(xué)學(xué)報(bào)(醫(yī)學(xué)版)2021年5期