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單核細(xì)胞計(jì)數(shù)/高密度脂蛋白膽固醇及促甲狀腺激素對(duì)絕經(jīng)期女性急性冠脈綜合征患者預(yù)測(cè)價(jià)值及與冠狀動(dòng)脈病變相關(guān)性研究

2024-08-07 00:00:00戴承曄鄧毅凡何勝虎張晶
中國(guó)全科醫(yī)學(xué) 2024年33期

【摘要】 背景 既往研究發(fā)現(xiàn)單核細(xì)胞計(jì)數(shù)、高密度脂蛋白膽固醇(HDL-C)、促甲狀腺激素(TSH)與急性冠脈綜合征(ACS)相關(guān),然而單核細(xì)胞計(jì)數(shù)/高密度脂蛋白膽固醇(MHR)與ACS發(fā)病的相關(guān)性研究較少,絕經(jīng)期女性MHR、TSH與ACS發(fā)病是否存在關(guān)聯(lián)仍不明確。目的 探討MHR、TSH對(duì)絕經(jīng)期女性ACS患者發(fā)病的預(yù)測(cè)價(jià)值,并研究上述指標(biāo)與患者冠狀動(dòng)脈狹窄程度的相關(guān)性。方法 選擇2020—2021年在蘇北人民醫(yī)院心血管內(nèi)科住院診治并行冠狀動(dòng)脈造影的325例絕經(jīng)期女性作為研究對(duì)象。通過(guò)電子病歷系統(tǒng)收集患者一般資料,研究對(duì)象入院后采集靜脈血檢測(cè)單核細(xì)胞計(jì)數(shù)、總膽固醇(TC)、三酰甘油(TG)、HDL-C、低密度脂蛋白膽固醇(LDL-C)、TSH等。以雙平面Simpson法測(cè)量左心室射血分?jǐn)?shù)(LVEF),通過(guò)冠狀動(dòng)脈造影術(shù)觀察冠狀動(dòng)脈病變情況。采用Gensini評(píng)分標(biāo)準(zhǔn)統(tǒng)一衡量冠狀動(dòng)脈病變情況。符合ACS診斷標(biāo)準(zhǔn)的患者為ACS組(n=184),非ACS者為對(duì)照組(n=141)。同時(shí)依據(jù)Gensini評(píng)分三分位數(shù)將ACS組進(jìn)行分組:≤36.5分為低危亞組(n=59),36.6~66.5分為中危亞組(n=64),>66.5分為高危亞組(n=61)。采用單因素及多因素Logistic回歸分析探究ACS的影響因素。繪制受試者工作特征(ROC)曲線評(píng)估TSH、MHR及聯(lián)合檢測(cè)對(duì)ACS的診斷價(jià)值并計(jì)算ROC曲線下面積(AUC)。采用Spearman秩相關(guān)分析探究TSH、MHR及聯(lián)合檢測(cè)指標(biāo)與Gensini積分的相關(guān)性。結(jié)果 ACS組與對(duì)照組患者基線資料結(jié)果示,ACS組BMI、吸煙比例、高血壓、糖尿病、LDL-C、單核細(xì)胞計(jì)數(shù)、TSH、MHR高于對(duì)照組,LVEF、HDL-C低于對(duì)照組(P<0.05)。多因素Logistic回歸分析結(jié)果示,吸煙、高血壓、BMI≥24.0 kg/m2、LDL-C≥3.30 mmol/L、TSH≥2.1 mU/L、MHR≥0.25是絕經(jīng)期女性發(fā)生ACS的危險(xiǎn)因素,HDL-C≥1.2 mmol/L為保護(hù)因素(P<0.05)。ROC曲線結(jié)果顯示,MHR、TSH及聯(lián)合預(yù)測(cè)指標(biāo)診斷絕經(jīng)期女性ACS的AUC分別為0.777(95%CI=0.725~0.830,P<0.001)、0.747(95%CI=0.694~0.800,P<0.001)、0.810(95%CI=0.764~0.857,P<0.001)。中危亞組、高危亞組MHR、TSH均高于低危亞組,高危亞組MHR、TSH高于中危亞組(P<0.05)。Spearman秩相關(guān)分析結(jié)果示,ACS組患者M(jìn)HR(rs=0.497,P<0.01)、TSH(rs=0.498,P<0.01)及聯(lián)合預(yù)測(cè)指標(biāo)與Gensini評(píng)分均呈正相關(guān)(rs=0.600,P<0.001)。結(jié)論 TSH及MHR升高是絕經(jīng)期女性發(fā)生ACS的獨(dú)立危險(xiǎn)因素,兩指標(biāo)及聯(lián)合對(duì)病情預(yù)測(cè)具有較高的靈敏度和特異度,并與患者冠狀動(dòng)脈病變程度相關(guān),對(duì)絕經(jīng)期女性ACS的早期識(shí)別及風(fēng)險(xiǎn)評(píng)估具有一定的臨床應(yīng)用價(jià)值。

【關(guān)鍵詞】 急性冠脈綜合征;絕經(jīng)期;單核細(xì)胞計(jì)數(shù)/高密度脂蛋白膽固醇比值;促甲狀腺激素;風(fēng)險(xiǎn)評(píng)估

【中圖分類號(hào)】 R 542.22 【文獻(xiàn)標(biāo)識(shí)碼】 A DOI:10.12114/j.issn.1007-9572.2024.0094

Clinical Study on the Predictive Value of Monocyte Count to High-Density Lipoprotein Cholesterol Ratio and Thyroid-stimulating Hormone for Acute Coronary Syndrome in Postmenopausal Women and Their Correlation with Coronary Artery Lesions

DAI Chengye1,2,3,DENG Yifan3,4,HE Shenghu3,4,ZHANG Jing3,4*

1.The Yangzhou School of Clinical Medicine of Dalian Medical University,Yangzhou 225001,China

2.Ningbo NO.2 Hospital,Ningbo 315010,China

3.Northern Jiangsu People's Hospital,Yangzhou 225001,China

4.Northern Jiangsu People's Hospital Affiliated to Yangzhou University,Yangzhou 225001,China

*Corresponding author:ZHANG Jing,Chief physician;E-mail:zhangjingyjs@163.com

【Abstract】 Background Previous studies have found associations between monocyte count,high-density lipoprotein cholesterol(HDL-C),and thyroid-stimulating hormone(TSH)with acute coronary syndrome(ACS). However,research on the correlation between the monocyte count to high-density lipoprotein cholesterol ratio(MHR)and the onset of ACS is limited. The association between MHR,TSH,and the onset of ACS in postmenopausal women remains unclear. Objective To explore the predictive value of MHR and TSH for the onset of ACS in postmenopausal women and to investigate the correlation between these indicators and the degree of coronary artery stenosis in patients. Methods A total of 325 postmenopausal women hospitalized in the Department of Cardiology at Northern Jiangsu People's Hospital,from 2020 to 2021 and who underwent coronary angiography were selected as the study subjects. Patient general information was collected through the electronic medical record system. Venous blood was collected upon admission to measure monocyte count,total cholesterol(TC),triglycerides(TG),HDL-C,low-density lipoprotein cholesterol(LDL-C),and TSH. Left ventricular ejection fraction(LVEF)was measured using the biplane Simpson method,and coronary artery lesions were observed through coronary angiography. The Gensini scoring system was used to uniformly measure the extent of coronary artery lesions. Patients meeting the diagnostic criteria for ACS were classified as the ACS group(n=184),and non-ACS patients as the control group(n=141). The ACS group was further divided into subgroups based on the tertiles of the Gensini score:≤36.5 as the low-risk subgroup(n=59),36.6-66.5 as the moderate-risk subgroup(n=64),and &gQl3cvamcgmcUCfFIwKJXXHPZ5TYN+okbZbUCDloxsO8=t;66.5 as the high-risk subgroup(n=61). Univariate and multivariate Logistic regression analyses were used to explore the influencing factors of ACS. The receiver operating characteristic(ROC)curve was plotted to evaluate the diagnostic value of TSH,MHR,and combined detection for ACS and to calculate the area under the curve(AUC). Spearman's rank correlation analysis was used to explore the correlation between TSH,MHR,and combined detection indicators with the Gensini score. Results The baseline data of patients in the ACS and control groups showed that BMI,smoking rate,hypertension,diabetes,LDL-C,monocytes,TSH,and MHR in the ACS group were higher than in the control group,while LVEF and HDL-C were lower(P<0.05). Multivariate Logistic regression analysis showed that smoking,hypertension,BMI≥24.0 kg/m2,LDL-C≥3.30 mmol/L,TSH≥2.1 mU/L,and MHR≥0.25 were risk factors for the occurrence of ACS in postmenopausal elderly women,and HDL-C≥1.2 mmol/L was a protective factor(P<0.05). The ROC curve analysis demonstrated that the AUC for MHR,TSH,and the combined predictive index in diagnosing ACS in postmenopausal women were 0.777(95%CI=0.725-0.830,P<0.001),0.747(95%CI=0.694-0.800,P<0.001),and 0.810(95%CI=0.764-0.857,P<0.001),respectively. In the moderate and high-risk subgroups,MHR and TSH were higher than in the low-risk subgroup,and the high-risk subgroup had higher MHR and TSH than the moderate-risk subgroup(P<0.05). Spearman's rank correlation analysis showed that in the ACS group,MHR(rs=0.497,P<0.01),TSH(rs=0.498,P<0.01),and the combined predictive indicators were positively correlated with the Gensini score(rs=0.600,P<0.001). Conclusion Elevated TSH and MHR are independent risk factors for the occurrence of ACS in postmenopausal women. Both indicators and their combination have certain sensitivity and specificity for disease prediction and are correlated with the extent of coronary artery lesions in patients,which has certain clinical application value for the early identification and risk assessment of ACS in postmenopausal women.

【Key words】 Acute coronary syndrome;Menopause;Monocyte count to high-density lipoprotein cholesterol ratio;Thyroid-stimulating hormone;Risk assessment

由于人口老齡化、飲食質(zhì)量提高、生活壓力增大等多種原因,中國(guó)的急性冠脈綜合征(ACS)發(fā)病率持續(xù)增高,其中絕經(jīng)后女性ACS患者發(fā)病后短期的死亡率比同年齡段男性患者高20%[1],這種死亡率差異可能與絕經(jīng)后激素水平變化有關(guān)[2]。ACS發(fā)病機(jī)制涉及炎癥反應(yīng)和脂質(zhì)代謝等多方面,而絕經(jīng)期女性激素水平改變明顯,易出現(xiàn)以代謝障礙為特征的一系列生理變化,影響了激素的血管保護(hù)作用[3]。在這一過(guò)程中炎癥誘導(dǎo)單核細(xì)胞遷移到炎癥組織[4]、血清促甲狀腺激素(TSH)水平升高、高密度脂蛋白膽固醇(HDL-C)功能失調(diào)誘導(dǎo)膽固醇逆向轉(zhuǎn)運(yùn)能力受損均與ACS發(fā)病密切相關(guān)。考慮用單一種炎癥細(xì)胞或炎癥因子來(lái)評(píng)估其病情,容易受感染、藥物、創(chuàng)傷等因素的影響而有所偏差,綜合性指標(biāo)可更全面地反映機(jī)體炎癥水平及應(yīng)激狀態(tài)[5],如單核細(xì)胞計(jì)數(shù)/高密度脂蛋白膽固醇(MHR)與心血管疾病的發(fā)生、發(fā)展密切相關(guān)[6]。據(jù)此,本研究以絕經(jīng)期女性ACS患者為對(duì)象,通過(guò)觀察其MHR、TSH水平,探討兩者及聯(lián)合對(duì)ACS發(fā)生的預(yù)測(cè)價(jià)值,并探討其與冠狀動(dòng)脈病變的相關(guān)性,為臨床上此類患者早期風(fēng)險(xiǎn)評(píng)估、靶點(diǎn)干預(yù)、改善預(yù)后提供指導(dǎo)。

1 對(duì)象與方法

1.1 研究對(duì)象

選擇2020—2021年在蘇北人民醫(yī)院心血管內(nèi)科住院診治并行冠狀動(dòng)脈造影的325例絕經(jīng)期女性作為研究對(duì)象。納入標(biāo)準(zhǔn):(1)年齡50~88歲,停經(jīng)1年及以上;(2)首次接受冠狀動(dòng)脈造影術(shù)。排除標(biāo)準(zhǔn):(1)嚴(yán)重心肺功能不全者;(2)甲狀腺腫瘤、垂體促甲狀腺激素腺瘤等內(nèi)分泌疾病者;(3)服用可能影響甲狀腺功能的藥物(治療甲狀腺功能亢進(jìn)或甲狀腺功能減退),曾行甲狀腺切除手術(shù)或曾行甲狀腺放射性核素治療;(4)2周內(nèi)有感染、發(fā)熱等疾病者;(5)患周圍血管性疾病者;(6)慢性消耗性疾病、風(fēng)濕免疫性疾病等慢性疾??;(7)嚴(yán)重肝腎功能不全;(8)腫瘤、血液病等影響血細(xì)胞計(jì)數(shù)的疾?。唬?)臨床資料不全者。本研究符合《赫爾辛基宣言》并通過(guò)了蘇北人民醫(yī)院醫(yī)學(xué)倫理委員會(huì)審批(審核批件號(hào):2022ky326),入選患者均自愿參加本研究并簽署知情同意書。

1.2 研究方法

1.2.1 一般資料:通過(guò)電子病歷系統(tǒng)收集患者年齡、身高、體質(zhì)量、吸煙史、飲酒史、糖尿病、高血壓病史等一般資料。患者非同日3次測(cè)量血壓,收縮壓≥140 mmHg(1 mmHg=0.133 kPa)和/或舒張壓≥90 mmHg診斷為高血壓。依據(jù)《中國(guó)2型糖尿病防治指南(2020年版)》[7]診斷糖尿病。吸煙定義為患者吸煙數(shù)量>1支/d,吸煙時(shí)間≥6個(gè)月。飲酒定義為患者飲酒量≥50 mL/次,>3次/周,連續(xù)飲酒6個(gè)月以上[8]。

1.2.2 臨床檢驗(yàn)結(jié)果:研究對(duì)象入院后盡快采集靜脈血,檢測(cè)單核細(xì)胞計(jì)數(shù);空腹12 h后于第2天早晨采集靜脈血,檢測(cè)總膽固醇(TC)、三酰甘油(TG)、HDL-C、低密度脂蛋白膽固醇(LDL-C)、TSH等。以雙平面Simpson法測(cè)量左心室射血分?jǐn)?shù)(left ventricular ejection fractions,LVEF)?;颊吖跔顒?dòng)脈造影術(shù)在右冠狀動(dòng)脈至少投照2個(gè)體位,左冠狀動(dòng)脈至少投照4個(gè)體位,由2名心血管內(nèi)科介入醫(yī)師對(duì)圖像進(jìn)行分析和結(jié)果判讀,判斷冠狀動(dòng)脈狹窄情況,結(jié)合胸痛、胸悶等臨床癥狀,心電圖、心肌壞死標(biāo)志物等輔助檢查,判定血管情況。ACS診斷參照《急性冠脈綜合征急診快速診治指南(2019)》[9],并記錄冠狀動(dòng)脈狹窄1e9671fe32573dcc2c8c48b38820c06f2dfa75a37432d324ee72616b98b83868程度及病變的支數(shù)。

1.2.3 冠狀動(dòng)脈病變程度評(píng)估:采用Gensini評(píng)分標(biāo)準(zhǔn)[10]統(tǒng)一衡量冠狀動(dòng)脈病變情況,血管無(wú)狹窄基本評(píng)分0分,狹窄程度≤25%基本評(píng)分1分,狹窄程度26%~50%基本評(píng)分2分,狹窄程度51%~75%基本評(píng)分4分,狹窄程度76%~90%基本評(píng)分8分,狹窄程度91%~99%基本評(píng)分16分,狹窄程度100%基本評(píng)分32分。不同病變血管對(duì)應(yīng)的權(quán)重系數(shù)如下,左主干系數(shù)為5,左前降支近段和左回旋支近段系數(shù)為2.5,左前降支中段和左回旋支中段系數(shù)為1.5,左前降支遠(yuǎn)段、左回旋支遠(yuǎn)段、左回旋支后降支、第一對(duì)角支及右冠狀動(dòng)脈系數(shù)為1。根據(jù)每一條冠狀動(dòng)脈其狹窄程度所對(duì)應(yīng)的基本評(píng)分值,及該病變血管對(duì)應(yīng)的權(quán)重系數(shù),將二者相乘即為Gensini評(píng)分,對(duì)于多處病變者,將各處病變的Gensini評(píng)分相加,即為該患者Gensini總評(píng)分。

1.2.4 分組:符合ACS診斷標(biāo)準(zhǔn)的患者為ACS組(n=184),非ACS者為對(duì)照組(n=141)。同時(shí)參考文獻(xiàn)[1 1],依據(jù)Gensini評(píng)分三分位數(shù)將ACS組進(jìn)行分組:≤36.5分為低危亞組(n=59),36.6~66.5分為中危亞組(n=64),>66.5分為高危亞組(n=61)。

1.3 統(tǒng)計(jì)學(xué)方法

采用SPSS 20.0統(tǒng)計(jì)學(xué)軟件進(jìn)行數(shù)據(jù)分析。計(jì)數(shù)資料采用例(%)表示,兩組間比較采用χ2檢驗(yàn);采用Kolmogorov-Smirnov檢驗(yàn)計(jì)量資料數(shù)據(jù)是否符合正態(tài)分布,符合正態(tài)分布的計(jì)量資料以(x-±s)表示,兩組間比較用獨(dú)立樣本t檢驗(yàn),多組間比較采用單因素方差分析,組間兩兩比較采用LSD-t檢驗(yàn);不符合正態(tài)分布的計(jì)量資料以M(P25,P75)表示,兩組比較采用Mann-Whitney U檢驗(yàn)。采用單因素及多因素Logistic回歸分析探究ACS的影響因素。繪制受試者工作特征(ROC)曲線評(píng)估TSH、MHR及聯(lián)合檢測(cè)對(duì)ACS的診斷價(jià)值并計(jì)算曲線下面積(AUC)。采用Spearman秩相關(guān)分析探究TSH、MHR及聯(lián)合檢測(cè)指標(biāo)與Gensini積分的相關(guān)性。以P<0.05為差異有統(tǒng)計(jì)學(xué)意義。

2 結(jié)果

2.1 ACS組與對(duì)照組患者基線資料

兩組患者基線資料比較結(jié)果示,ACS組BMI、吸煙比例、高血壓、糖尿病、LDL-C、單核細(xì)胞計(jì)數(shù)、TSH、MHR高于對(duì)照組,LVEF、HDL-C低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);兩組患者年齡、飲酒比例、TG、TC比較,差異無(wú)統(tǒng)計(jì)學(xué)意義(P>0.05),見(jiàn)表1。

2.2 絕經(jīng)期女性發(fā)生ACS影響因素的單因素和多因素Logistic回歸分析

以絕經(jīng)期女性是否發(fā)生ACS(賦值:是=1,否=0)為因變量,以表1中差異有統(tǒng)計(jì)學(xué)意義變量[吸煙(賦值:是=1,否=0)、高血壓(賦值:是=1,否=0)、糖尿?。ㄙx值:是=1,否=0)、LVEF(賦值:≤50%=0,>50%=1)、BMI(賦值:<24.0 kg/m2=0,≥24.0 kg/m2=1)、單核細(xì)胞計(jì)數(shù)(賦值:<0.5×109=0,≥0.5×109=1)、HDL-C(賦值:<1.2 mmol/L=0,≥1.2 mmol/L=1)、LDL-C(賦值:<3.30 mmol/L=0,≥3.30 mmol/L=1)、TSH(賦值:<2.1 mU/L=0,≥2.1 mU/L=1)、MHR(賦值:<0.25=0,≥0.25=1)]為自變量進(jìn)行單因素Logistic回歸分析,結(jié)果顯示吸煙、高血壓、糖尿病、LVEF、BMI、HDL-C、LDL-C、TSH、MHR為絕經(jīng)期女性發(fā)生ACS的影響因素(P<0.05),見(jiàn)表2。

將單因素Logistic回歸分析中P<0.05的指標(biāo)納入多因素Logistic回歸分析(賦值同上),結(jié)果顯示,吸煙、高血壓、BMI≥24.0 kg/m2、LDL-C≥3.30 mmol/L、TSH≥2.1 mU/L、MHR≥0.25是絕經(jīng)期女性發(fā)生ACS的危險(xiǎn)因素,HDL-C≥1.2 mmol/L為保護(hù)因素(P<0.05),見(jiàn)表3。

2.3 MHR、TSH及聯(lián)合預(yù)測(cè)指標(biāo)對(duì)絕經(jīng)期女性ACS的診斷價(jià)值

ROC曲線結(jié)果顯示,MHR、TSH及聯(lián)合預(yù)測(cè)指標(biāo)診斷絕經(jīng)期女性ACS的AUC分別為0.777(95%CI=0.725~0.830)、0.747(95%CI=0.694~0.800)、0.810(95%CI=0.764~0.857),見(jiàn)表4、圖1。

2.4 低危亞組、中危亞組、高危亞組MHR、TSH水平比較

低危亞組、中危亞組、高危亞組MHR、TSH比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。組間兩兩比較結(jié)果示,中危亞組、高危亞組MHR、TSH均高于低危亞組,高危亞組MHR、TSH高于中危亞組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05),見(jiàn)表5。

2.5 MHR、TSH及聯(lián)合預(yù)測(cè)與Gensini評(píng)分相關(guān)性分析

Spearman秩相關(guān)分析結(jié)果示,ACS組患者M(jìn)HR(rs=0.497,P<0.01)、TSH(rs=0.498,P<0.01)及聯(lián)合預(yù)測(cè)指標(biāo)與Gensini評(píng)分均呈正相關(guān)(rs=0.600,P<0.001)。

3 討論

本研究通過(guò)對(duì)比研究絕經(jīng)期女性ACS患者與非ACS患者的基線資料和臨床指標(biāo)資料發(fā)現(xiàn),ACS組伴有高血壓、糖尿病、吸煙的比例及BMI明顯升高,而飲酒對(duì)絕經(jīng)期女性患者有無(wú)ACS影響不大;吸煙、高血壓、糖尿病、BMI升高均為絕經(jīng)期女性發(fā)生ACS的獨(dú)立危險(xiǎn)因素,這與SALTIKI等[12]發(fā)現(xiàn)絕經(jīng)期婦女高脂血癥、糖尿病、冠心病家族史以及胰島素抵抗等多種危險(xiǎn)因素與冠心病嚴(yán)重程度密切相關(guān)的結(jié)果相符。

TSH通過(guò)調(diào)控甲狀腺激素的循環(huán)濃度影響心血管系統(tǒng)[13],如患有亞臨床甲狀腺功能減退心血管疾病患者的全因死亡率增加[14]。同時(shí),TSH參與脂肪生成和分解[15-16],可以影響血清TC和LDL-C水平[17]。DELITALA等[18]發(fā)現(xiàn)女性絕經(jīng)狀態(tài)顯著改變了TSH和血脂之間的相關(guān)性。本研究發(fā)現(xiàn)絕經(jīng)期女性ACS組患者TSH較對(duì)照組明顯升高,且多因素Logistic回歸分析結(jié)果顯示TSH水平升高是此類人群罹患ACS的獨(dú)立危險(xiǎn)因素,相關(guān)性分析結(jié)果示TSH與Gensini評(píng)分呈正相關(guān),表明高TSH與絕經(jīng)期女性發(fā)生ACS及冠狀動(dòng)脈嚴(yán)重病變密切相關(guān)。

HDL-C在延緩動(dòng)脈粥樣硬化進(jìn)展中起到了重要的作用,與抗炎和抗氧化有關(guān),而LDL-C可以在氧自由基的控制下,運(yùn)載膽酸,形成脂質(zhì)和相關(guān)氧化物,導(dǎo)致動(dòng)脈粥樣硬化,控制LDL-C水平是防治心血管疾病有效的策略之一[19]。在絕經(jīng)期女性體內(nèi),隨著雌激素水平的下降,載脂蛋白基因和低密度脂蛋白(LDL)受體的表達(dá)減少[20],對(duì)絕經(jīng)期女性加用雌激素補(bǔ)充治療,可以降低LDL-C和脂蛋白(a)水平,增加HDL-C水平,改善絕經(jīng)期女性的脂質(zhì)分布[21]。本研究發(fā)現(xiàn)HDL-C水平升高是絕經(jīng)期女性發(fā)生ACS的獨(dú)立保護(hù)因素,ACS組LDL-C水平明顯升高,HDL-C水平明顯降低,這與高LDL-C、低HDL-C是總?cè)巳汗谛牟∥kU(xiǎn)因素的認(rèn)識(shí)較為一致。但在達(dá)到目標(biāo)LDL-C水平后,部分患者仍有罹患心血管疾病的風(fēng)險(xiǎn)[22],已有文獻(xiàn)表明,炎癥指標(biāo)在絕經(jīng)期女性冠心病的發(fā)生和發(fā)展中起主導(dǎo)作用,BJ?RNSTR?M等[23]發(fā)現(xiàn)在動(dòng)脈粥樣硬化過(guò)程的早期階段,絕經(jīng)期女性的血管內(nèi)皮更易捕獲LDL分子,觸發(fā)局部炎癥反應(yīng),單核細(xì)胞在活化內(nèi)皮上滾動(dòng),從而讓外周循環(huán)單核細(xì)胞動(dòng)員到病變組織[24]。在進(jìn)入組織后,活化的單核細(xì)胞與受損的內(nèi)皮細(xì)胞相互作用,誘導(dǎo)促炎細(xì)胞因子和黏附分子的分泌[25]。本研究的臨床指標(biāo)比較中可以看出,ACS組單核細(xì)胞水平高于對(duì)照組,考慮可能與不同程度心肌細(xì)胞損傷有關(guān)。因此,控制患者LDL-C水平的同時(shí)降低炎癥水平在ACS的發(fā)生、發(fā)展中起著重要作用。目前研究發(fā)現(xiàn),在胸痛患者中,即使LDL-C<1.8 mmol/L,新型炎癥指標(biāo)MHR以及HDL-C仍然與ACS的發(fā)生和嚴(yán)重程度相關(guān)[26]。其中,MHR代表了炎癥和脂質(zhì)代謝之間的平衡狀態(tài),在一項(xiàng)針對(duì)ACS患者的研究中,其被發(fā)現(xiàn)是冠心病嚴(yán)重程度和未來(lái)心臟事件發(fā)展的獨(dú)立預(yù)測(cè)因子[27]。單核細(xì)胞轉(zhuǎn)變?yōu)檠装Y性巨噬細(xì)胞,通過(guò)攝取氧化LDL顆粒形成泡沫細(xì)胞來(lái)協(xié)調(diào)動(dòng)脈粥樣硬化的進(jìn)展[28]。HDL-C通過(guò)逆轉(zhuǎn)巨噬細(xì)胞膽固醇的轉(zhuǎn)運(yùn),改善內(nèi)皮功能障礙,抑制黏附分子的表達(dá),抑制LDL-C的氧化。HDL-C還可以抑制單核祖細(xì)胞的增殖分化和單核細(xì)胞的活化[29]。本研究中ACS組患者M(jìn)HR水平高于對(duì)照組,將單因素分析中有意義的指標(biāo)納入多因素Logistic回歸分析中,發(fā)現(xiàn)MHR升高是此類人群罹患ACS的獨(dú)立危險(xiǎn)因素,與既往研究是相符的。同時(shí)本研究發(fā)現(xiàn)隨著患者血MHR指標(biāo)的升高,冠狀動(dòng)脈病變程度加重,MHR與Gensini評(píng)分呈正相關(guān)。這與女性絕經(jīng)過(guò)渡期及以后,卵巢分泌激素能力改變,雌激素水平下降,炎癥風(fēng)險(xiǎn)增加,抑制早期動(dòng)脈粥樣硬化能力減弱相關(guān)[30]。

本研究存在以下局限性:本研究作為單中心回顧性研究存在樣本量較少、納入影響因素不足和選擇偏倚等局限性,后續(xù)可進(jìn)一步增加人群,擴(kuò)展試驗(yàn),進(jìn)行更多中心大樣本的前瞻性研究以豐富及完善本研究結(jié)果。

4 小結(jié)

MHR和TSH可協(xié)同傳統(tǒng)心血管危險(xiǎn)因素,一定程度上更精確、全面評(píng)估絕經(jīng)期女性ACS患者的發(fā)病風(fēng)險(xiǎn)。ROC曲線可見(jiàn)TSH、MHR以及兩指標(biāo)聯(lián)合對(duì)絕經(jīng)期女性ACS的發(fā)生均具有較高預(yù)測(cè)價(jià)值,其中兩指標(biāo)聯(lián)合預(yù)測(cè)的靈敏度最高,三者特異度類似。MHR與TSH均是臨床易獲取的生物標(biāo)志物,本研究通過(guò)探究TSH、MHR與冠狀動(dòng)脈病變的相關(guān)性,并探討了TSH、MHR及其聯(lián)合預(yù)測(cè)指標(biāo)在絕經(jīng)期女性冠心病患者中的意義,發(fā)現(xiàn)在絕經(jīng)期女性患者中,ACS組患者血清MHR、TSH水平顯著高于對(duì)照組患者,并且隨著MHR、TSH水平增高,冠狀動(dòng)脈病變逐漸加重,這意味著在絕經(jīng)期女性臨床診療中通過(guò)MHR、TSH指標(biāo)預(yù)測(cè)ACS的風(fēng)險(xiǎn),為擴(kuò)展絕經(jīng)期女性的疾病風(fēng)險(xiǎn)評(píng)估及預(yù)測(cè)指標(biāo),優(yōu)化此類人群冠心病一、二級(jí)預(yù)防具有重大價(jià)值。

作者貢獻(xiàn):戴承曄進(jìn)行研究的構(gòu)思、設(shè)計(jì)以及文章撰寫;鄧毅凡進(jìn)行數(shù)據(jù)的收集、整理與統(tǒng)計(jì)學(xué)分析;何勝虎、張晶負(fù)責(zé)文章的修訂;張晶負(fù)責(zé)文章的質(zhì)量控制及審校,對(duì)文章整體負(fù)責(zé),監(jiān)督管理。

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(收稿日期:2024-04-08;修回日期:2024-06-10)

(本文編輯:鄒琳)

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