Dataset Information

Circulating interleukins in relation to coronary artery disease, atrial fibrillation and ischemic stroke and its subtypes: A two-sample Mendelian randomization study.

ABSTRACT:

Background

The causal role of interleukins (ILs) for cardiovascular disease has not been fully elucidated. We conducted a Mendelian randomization study to investigate the associations of circulating ILs with coronary artery disease (CAD), atrial fibrillation (AF), and ischemic stroke.

Methods and results

Single-nucleotide polymorphisms associated with IL-1β, IL-1 receptor antagonist (IL-1ra), IL-2 receptor subunit alpha, IL-6, IL-16, IL-17 and IL-18 were identified from genome-wide association studies. Summary-level data of the outcomes were obtained from three large consortia. Genetic predisposition to higher IL-1ra levels were significantly associated with CAD. The odds ratio was 1.36 (95% confidence interval (CI), 1.14-1.63; P = 5.37 × 10^-4) per one standard deviation increase in IL-1ra levels. Genetically higher IL-6 levels, predicted by a variant in the IL6R gene and corresponding to reduced IL-6 bio-function, were significantly inversely associated with CAD and AF. The odds ratios per one standard deviation increase in IL-6 levels were 0.64 (95%CI, 0.54-0.76; P = 2.22 × 10^-7) for CAD and 0.70 (95%CI, 0.62-0.80; P = 1.34 × 10^-7) for AF. There was a suggestive positive association of IL-1ra with cardioembolic stroke and suggestive inverse associations of IL-6 with any ischemic stroke, cardioembolic stroke, and small vessel stroke, and of IL-16 with CAD. The other ILs were not associated with any outcome.

Conclusions

These results strengthen the evidence that IL-6 inhibition may offer a therapeutic approach for prevention of CAD, AF, and ischemic stroke. In contrast, IL-1 inhibition through raised IL-1ra levels may confer increased risk of CAD and cardioembolic stroke. The role of IL-16 for CAD warrants further investigation.

SUBMITTER: Yuan S

PROVIDER: S-EPMC7611848 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Publications

Circulating interleukins in relation to coronary artery disease, atrial fibrillation and ischemic stroke and its subtypes: A two-sample Mendelian randomization study.

Yuan Shuai S Lin Ang A He Qi-Qiang QQ Burgess Stephen S Larsson Susanna C SC

International journal of cardiology 20200321

<h4>Background</h4>The causal role of interleukins (ILs) for cardiovascular disease has not been fully elucidated. We conducted a Mendelian randomization study to investigate the associations of circulating ILs with coronary artery disease (CAD), atrial fibrillation (AF), and ischemic stroke.<h4>Methods and results</h4>Single-nucleotide polymorphisms associated with IL-1β, IL-1 receptor antagonist (IL-1ra), IL-2 receptor subunit alpha, IL-6, IL-16, IL-17 and IL-18 were identified from genome-wid ...[more]

PMID: 32223966

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Project description:Background and purposePrevious studies have found ischemic stroke is associated with atrial fibrillation. However, the causal association between ischemic stroke and atrial fibrillation is not clear. Furthermore, the network relationship among ischemic stroke, atrial fibrillation and its risk factors need further attention. This study aims to examine the potential causal association between ischemic stroke and atrial fibrillation and further to explore potential mediators in the causal pathway from ischemic stroke to atrial fibrillation.MethodsSummary statistics from the ISGC (case = 10,307 and control = 19,326) were used as ischemic stroke genetic instruments, AFGen Consortium data (case = 65,446 and control = 522,744) were used for atrial fibrillation, and other consortia data were used for potential mediators (fasting insulin, white blood cell count, procalcitonin, systolic and diastolic blood pressure, body mass index, waist circumference, and height). Under the framework of network Mendelian randomization, two-sample Mendelian randomization study was performed using summary statistics from several genome-wide association studies. Inverse-variance weighted method was performed to estimate causal effect.ResultsBlood pressure mediates the causal pathways from ischemic stroke to atrial fibrillation. The total odds ratio of ischemic stroke on atrial fibrillation was 1.05 (95% confidence interval [CI], 1.02 to 1.07; P = 1.3 × 10-5). One-unit increase of genetically determined ischemic stroke was associated with 0.02 (DBP: 95% CI, 0.001 to 0.034, P = 0.029; SBP: 95% CI, 0.006 to 0.034, P = 0.003) upper systolic and diastolic blood pressure levels. Higher genetically determined systolic and diastolic blood pressure levels were associated with higher atrial fibrillation risk (DBP: RR, 1.18; 95% CI, 1.03 to 1.35; P = 0.012. SBP: RR, 1.18; 95% CI, 1.01 to 1.38; P = 0.04). Specially, we also found the bidirectional causality between blood pressure and ischemic stroke.ConclusionsOur study provided a strong evidence that raised blood pressure in stroke patients increases the risk of atrial fibrillation and active acute blood pressure lowering can improve the outcome in ischemic stroke patients.

Dataset Information

Circulating interleukins in relation to coronary artery disease, atrial fibrillation and ischemic stroke and its subtypes: A two-sample Mendelian randomization study.

Background

Methods and results

Conclusions

Publications

Circulating interleukins in relation to coronary artery disease, atrial fibrillation and ischemic stroke and its subtypes: A two-sample Mendelian randomization study.

Similar Datasets

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