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Serum albumin and atrial fibrillation: insights from epidemiological and mendelian randomization studies
European Journal of Epidemiology ( IF 7.7 ) Pub Date : 2019-11-18 , DOI: 10.1007/s10654-019-00583-6
Li-zhen Liao , Shao-zhao Zhang , Wei-dong Li , Ying Liu , Jia-ping Li , Xiao-dong Zhuang , Xin-xue Liao

Atrial fibrillation (AF) is the most common arrhythmia in clinical practice. Low serum albumin level is linked to the emergence of many cardiovascular diseases, including AF. In this study, we aim to characterize the nature and magnitude of the prospective association between serum albumin and incident AF in the Atherosclerosis Risk in Communities (ARIC) Study and investigate any causal relevance to the association between them. ARIC Study is a population-based, prospective, cohort study of cardiovascular risk factors in four US communities, initially consisting of 15,792 participants, aged 45–64 years, recruited between 1987 and 1989 (visit 1). The final sample size was 12,833 in this study. Baseline (visit 1) characteristics were compared between groups using one-way ANOVA test, Chi square test, or Kruskal–Wallis test as appropriate. We used multivariable Cox’ hazard regression models to assess the association between albumin and incident AF. Two-sample Mendelian randomization (MR) based on publicly available summary-level data from genome-wide association studies was used to estimate the causal influence of the serum albumin and incident AF. During a median follow-up of 25.1 years, 2259 (17.6%) participants developed incident AF. After multiple adjustment, serum albumin was inversely associated with incidence of AF [HR = 0.90, 95% CI 0.86–0.94, per SD (0.27 g/dL) increase; HR = 0.80, 95% CI 0.71–0.91, Q4 vs. Q1]. In MR analysis, we detected no evidence for a causal relation between serum albumin level and AF in inverse-variance weighted (IVW) method (odds ratio: 0.996, 95% CI 0.980–1.012, per 1 g/dL increase of albumin; P = 0.620) without evidence of heterogeneity between estimates from individual SNPs (Pheterogeneity = 0.981 [MR-Egger] and Pheterogeneity = 0.860 [IVW]) nor pleiotropy effect (Ppleiotropy = 0.193). The serum albumin level is independently inverse associated with incident AF in a linear pattern. However, MR analyses did not support a causal role of serum albumin in the etiology of AF.

中文翻译:

血清白蛋白和心房颤动:流行病学和孟德尔随机研究的见解

心房颤动(AF)是临床上最常见的心律不齐。血清白蛋白水平低与许多心血管疾病(包括房颤)的出现有关。在这项研究中,我们旨在表征社区中的动脉粥样硬化风险(ARIC)研究中血清白蛋白与入射房颤之间前瞻性关联的性质和大小,并调查与它们之间关联的任何因果关系。ARIC研究是一项基于人群的前瞻性队列研究,研究对象是美国四个社区,最初由15792名年龄在45-64岁之间的参与者组成,其研究对象是1987年至1989年(第1次访问)。在这项研究中,最终样本量为12,833。使用单向方差分析,卡方检验或Kruskal-Wallis检验对两组之间的基线(第1次访视)特征进行比较。我们使用多变量Cox风险回归模型评估白蛋白与房颤的相关性。基于来自全基因组关联研究的公开摘要级别数据的两样本孟德尔随机化(MR)用于估计血清白蛋白和入射房颤的因果影响。在25.1年的中位随访中,有2259名(17.6%)参与者发生了房颤事件。经过多次调整后,每SD(0.27 g / dL)升高,血清白蛋白与AF的发生率呈负相关[HR = 0.90,95%CI 0.86-0.94。HR = 0.80,95%CI 0.71-0.91,第4季与第1季相比]。在MR分析中,我们没有发现反方差加权(IVW)方法中血清白蛋白水平与AF之间存在因果关系的证据(赔率:0.996,95%CI 0.980-1.012,每增加1 g / dL白蛋白;基于来自全基因组关联研究的公开摘要级别数据的两样本孟德尔随机化(MR)用于估计血清白蛋白和入射房颤的因果影响。在25.1年的中位随访中,有2259名(17.6%)参与者发生了房颤事件。经过多次调整后,每SD(0.27 g / dL)升高,血清白蛋白与AF的发生率呈负相关[HR = 0.90,95%CI 0.86-0.94。HR = 0.80,95%CI 0.71-0.91,第4季与第1季相比]。在MR分析中,我们没有发现反方差加权(IVW)方法中血清白蛋白水平与AF之间存在因果关系的证据(赔率:0.996,95%CI 0.980-1.012,每增加1 g / dL白蛋白;基于来自全基因组关联研究的公开摘要级别数据的两样本孟德尔随机化(MR)用于估计血清白蛋白和入射房颤的因果影响。在25.1年的中位随访中,有2259名(17.6%)参与者发生了房颤事件。经过多次调整后,每SD(0.27 g / dL)升高,血清白蛋白与AF的发生率呈负相关[HR = 0.90,95%CI 0.86-0.94。HR = 0.80,95%CI 0.71-0.91,第4季与第1季相比]。在MR分析中,我们没有发现以逆方差加权(IVW)方法检测血清白蛋白水平与AF之间存在因果关系的证据(赔率:0.996,95%CI 0.980–1.012,每增加1 g / dL白蛋白;血清白蛋白与房颤发生率呈负相关[HR = 0.90,95%CI 0.86-0.94,每SD(0.27 g / dL)增加;HR = 0.80,95%CI 0.71-0.91,第4季与第1季相比]。在MR分析中,我们没有发现以逆方差加权(IVW)方法检测血清白蛋白水平与AF之间存在因果关系的证据(赔率:0.996,95%CI 0.980–1.012,每增加1 g / dL白蛋白;血清白蛋白与房颤发生率呈负相关[HR = 0.90,95%CI 0.86-0.94,每SD(0.27 g / dL)增加;HR = 0.80,95%CI 0.71-0.91,第4季与第1季相比]。在MR分析中,我们没有发现以逆方差加权(IVW)方法检测血清白蛋白水平与AF之间存在因果关系的证据(赔率:0.996,95%CI 0.980–1.012,每增加1 g / dL白蛋白;P  = 0.620),而没有证据表明各个SNP的估计之间存在异质性(P异质性 = 0.981 [MR-Egger]和P异质性 = 0.860 [IVW]),也没有多效性效应(P 异质= 0.193)。血清白蛋白水平以线性模式独立地与入射AF成反比。然而,MR分析不支持血清白蛋白在AF病因中的因果作用。
更新日期:2019-11-18
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