Dataset Information

Association between Beta Adrenergic Receptor Polymorphism and Ischemic Stroke: A Meta-Analysis.

ABSTRACT: BACKGROUND AND PURPOSE:The purpose of this meta-analysis was to determine the precise association between beta-2 adrenergic receptor (?2AR) polymorphism and Ischemic stroke. METHODS:Published case control studies on association between ?2AR and ischemic stroke were searched from electronic databases. Pooled Odds ratio and 95% Confidence interval were calculated by using software RevMan version 5.2. RESULTS:A total of three studies involving 1,642 cases and 1,673 controls, which were published from 2007 to 2014, were subjected to meta-analysis for allelic association and 518 cases and 510 controls for genotypic association. Pooled analysis of two studies for genotypic association suggested that subjects carrying Gln27Glu polymorphism of ?2AR had an increased risk for Ischemic stroke under recessive model (OR 2.09; 95% CI; 1.20 to 3.64) and under dominant model (OR 1.47; 95% CI 1.14 to 1.90). Pooled analysis of three studies for allelic association showed a significantly higher Glu27 allele of ?2AR in the patients with ischemic stroke (OR 1.58; 95% CI; 1.38 to 1.81). CONCLUSIONS:The present meta-analysis suggests that Gln27Glu polymorphism of ?2AR gene is associated with increased risk for ischemic stroke.

SUBMITTER: Kumar A

PROVIDER: S-EPMC4460333 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature

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Association between Beta Adrenergic Receptor Polymorphism and Ischemic Stroke: A Meta-Analysis.

Kumar Amit A Prasad Manya M Kumar Pradeep P Yadav Arun Kumar AK Pandit Awadh Kishor AK Kathuria Prachi P

Journal of stroke 20150529 2

<h4>Background and purpose</h4>The purpose of this meta-analysis was to determine the precise association between beta-2 adrenergic receptor (β2AR) polymorphism and Ischemic stroke.<h4>Methods</h4>Published case control studies on association between β2AR and ischemic stroke were searched from electronic databases. Pooled Odds ratio and 95% Confidence interval were calculated by using software RevMan version 5.2.<h4>Results</h4>A total of three studies involving 1,642 cases and 1,673 controls, w ...[more]

PMID: 26060801

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Project description:ObjectiveTo explore the association between transforming growth factor-beta1 (TGF-?1) T869C polymorphism and risk of ischemic stroke (IS) by performing a meta-analysis based on published articles.MethodsSystematic electronic searches of PubMed, Science Direct, BIOSIS Previews, Chinese Biomedical Database, Chinese National Knowledge Infrastructure, and WANFANG Database were performed. The strength of the association was calculated by pooled odds ratios (ORs) with 95% confidence intervals (95%CIs). Subgroup analysis was conducted to explore potential sources of heterogeneity. Sensitivity analysis was performed to elucidate the stability of the outcomes. Publication bias was evaluated by Begg's funnel plot and Egger's test.ResultsA total of 6 studies involving 1701 cases were included. The overall estimates did not show any significant association between TGF-?1 T869C polymorphism and risk of IS under all genetic models (C vs. T: OR?=?1.08,95%CI?=?0.88-1.32; CC vs. TT:OR?=?1.17,95%CI?=?0.79-1.72; CT vs. TT: OR?=?0.91, 95%CI?=?0.68-1.22; CC+CT vs. TT: OR?=?0.99, 95%CI?=?0.73-1.35; CC vs. CT+TT: OR?=?1.23, 95%CI?=?0.95-1.59). Similar lacking associations were observed in subgroup analysis based on ethnicity and source of controls. When stratified by study design, significant increased association of IS risk was found in cohort studies under genetic models except recessive model(C vs. T: OR?=?1.18, 95%CI?=?1.05-1.32; CC vs. TT: OR?=?1.40, 95%CI?=?1.10-1.77; CT vs. TT: OR?=?1.23, 95%CI?=?1.02-1.49; CC+CT vs. TT: OR?=?1.27, 95%CI?=?1.03-1.57; CC vs. CT+TT, OR?=?1.21, 95%CI?=?0.99-1.47), whereas in case-control studies a significant decreased risk was detected under heterozygote comparison(CT vs. CC: OR?=?0.72, 95%CI?=?0.57-0.92). However, after correction for multiple testing, the associations were observed to be null significant in both cohort and case-control subgroups among all genetic models.ConclusionThis meta-analysis suggested that current epidemiological studies of TGF-?1 T869C polymorphism are too inconsistent to draw a conclusion on the association with IS susceptibility. Given the small sample size and remarkable between-study heterogeneity, further well-designed prospective large-scale studies are warranted.

Project description:BACKGROUND:Endothelin (ET)-1 is a potent vasoconstrictor peptide produced by endothelial cells and associated with vascular dysfunction and cardiovascular disease. Lys198Asn is a single-nucleotide polymorphism (SNP) of gene encoding ET-1 (EDN1). It is hypothesized that it might have a role in altering ET-1 and ultimately leading to vascular dysfunction and ischemic stroke. We therefore conducted a meta-analysis to investigate the association between Lys198Asn polymorphism of EDN1 gene and susceptibility of ischemic stroke. METHODS:This meta-analysis was conducted according to the guidance of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. We searched PubMed, Google Scholar, Embase, Web of Science, J-STAGE, and China National Knowledge Infrastructure (CNKI) for relevant studies. The association between Lys198Asn polymorphism and ischemic stroke susceptibility was evaluated by calculating the pooled ORs and 95% CIs. RESULTS:Our analysis included 1,291 cases and 2,513 controls. Meta-analysis established a significant association between Lys198Asn SNP of EDN1 gene and ischemic stroke when assuming either recessive model (OR: 1.30; 95% CI: 1.02-1.65; p = .03; I2 = 41%) or dominant model (OR: 1.48; 95% CI: 1.24-1.76; p < .001; I2 = 61%). There was no evidence of publication bias in either of the recessive model (Egger test: p = .23; Begg test: p = .85) or dominant model (Egger test: p = .79; Begg test: p = .85). A subgroup analysis based on subtypes of ischemic stroke showed that Lys198Asn SNP was only associated with large vessel infarction but not with lacunar infarction caused by small vessel disease. A subgroup analysis based on ethnicity revealed that the Lys198Asn polymorphism of the EDN1 gene was associated with ischemic stroke only in Caucasians. CONCLUSIONS:The present meta-analysis suggests that Lys198Asn polymorphism of EDN1 gene is associated with an increased risk for ischemic stroke.

Project description:ObjectiveThe results of published studies which examined the association between variable number tandem repeat (VNTR) polymorphism of interleukin-1 receptor antagonist (IL-1RN) and ischemic stroke (IS) are conflicting. Thus, we performed a meta-analysis to examine the potential association between IL-1RN VNTR polymorphism and IS risk.MethodsA systematic literature search of PubMed, Embase, Medline, Web of Science, Cochrane Library, Chinese Biomedical Literature Database, Chinese National Knowledge Infrastructure, CQVIP, and WANFANG Database identified 10 studies with 2331 cases and 3335 controls. The pooled odds ratio (OR) with 95% confidence interval (95% CI) was calculated to evaluate the strength of the association. Subgroup analysis and meta-regression analysis were used to investigate the potential sources of heterogeneity. Begg funnel plots were used to explore the publication bias.ResultsIn this study, no enough proof was found to prove the association between IL-1RN 86-bp VNTR polymorphism and IS risk with random-effects model in the homozygous model (1/1 vs 2/2, OR = 0.97, 95% CI = 0.50-1.87, Pheterogeneity = .00), the heterozygous model (1/2 vs 2/2, OR = 0.64, 95% CI = 0.41-1.01, Pheterogeneity = .10), the dominant model (1/1 + 1/2 vs 2/2, OR = 0.85, 95% CI = 0.51-1.42, Pheterogeneity = .02), the recessive model (1/1 vs 1/2 + 2/2, OR = 0.69, 95% CI = 0.46-1.03, Pheterogeneity = .00), and allelic model (1 vs 2, OR = 1.24, 95% CI = 0.89-1.74, Pheterogeneity = .00). A marginally significant negative association was observed between IL-1RN 86-bp VNTR polymorphism and IS risk in the heterozygous model in the fixed-effects model (1/2 vs 2/2, OR = 0.71, 95% CI = 0.53-0.95, Pheterogeneity = .10). In subgroup analyses, similar association was found in the group whose control size was lower than 300.ConclusionIn conclusion, our results suggested that there was no sufficient evidence to support the association between IL-1RN 86-bp VNTR polymorphism and IS. Further large epidemiologic studies need to be done to confirm these findings.

Dataset Information

Association between Beta Adrenergic Receptor Polymorphism and Ischemic Stroke: A Meta-Analysis.

Publications

Association between Beta Adrenergic Receptor Polymorphism and Ischemic Stroke: A Meta-Analysis.

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