Association of PON1 gene polymorphisms with polycystic ovarian syndrome risk: a meta-analysis of case–control studies

2018 ◽  
Vol 41 (11) ◽  
pp. 1289-1300 ◽  
Author(s):  
D. Liao ◽  
H. Yu ◽  
L. Han ◽  
C. Zhong ◽  
X. Ran ◽  
...  
Keyword(s):  
Gene Polymorphisms ◽  
Polycystic Ovarian Syndrome ◽  
Meta Analysis ◽  
Case Control ◽  
Case Control Studies ◽  
Pon1 Gene ◽  
Ovarian Syndrome

scholarly journals DHEA and polycystic ovarian syndrome: Meta-analysis of case-control studies

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261552
Author(s):  
Jiby Jolly Benjamin ◽  
MaheshKumar K. ◽  
Teena Koshy ◽  
Maruthy K. N. ◽  
Padmavathi R.
Keyword(s):  
Polycystic Ovarian Syndrome ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Case Control ◽  
Healthy Controls ◽  
Polycystic Ovaries ◽  
Case Control Studies ◽  
Mesh Terms ◽  
Ovarian Syndrome

Background Polycystic ovarian syndrome is a heterogenous endocrine disorder characterized by irregular menstrual cycles, hirsuitism and polycystic ovaries. It is further complicated by metabolic syndrome, infertility and psychological stress. Although the etiopathogenesis is unclear, many studies have pointed out the role of stress in this syndrome. DHEA, being a stress marker is being used by scientists to compare the stress levels between polycystic ovarian cases and healthy controls. However, the results obtained from previous studies are equivocal. Objective To perform meta-analysis and find the association between stress and the syndrome. Data sources Relevant data till January 2021 were retrieved from PubMed, Scopus, Embase and Web of Science using MeSH terms. Study selection Case-control studies having PCOS subjects as cases and healthy women as controls were selected provided; their basal DHEA levels were mentioned in the published articles. Data extraction Two authors independently extracted the articles and qualified the final studies. Data synthesi Pooled meta-analysis was done using random effect model and showed level of DHEA statistically significant in PCOS compared to healthy controls (SMD = 1.15, 95% CI = 0.59–1.71).Heterogeneity was statistically significant as well (I2 = 95%). Conclusion Thismeta-analysis on DHEA and PCOS has helped in generating evidence regarding the involvement of stress in the pathogenesis of PCOS.

scholarly journals Association between the polymorphism of IL-17A and IL-17F gene with knee osteoarthritis risk: a meta-analysis based on case-control studies

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Feifan Lu ◽  
Pei Liu ◽  
Qidong Zhang ◽  
Weiguo Wang ◽  
Wanshou Guo
Keyword(s):  
Knee Osteoarthritis ◽  
Gene Polymorphisms ◽  
Meta Analysis ◽  
Case Control ◽  
Joint Disease ◽  
Cochrane Library ◽  
Case Control Studies ◽  
Knee Oa ◽  
Statistical Heterogeneity ◽  
Bone Changes

Abstract Background Knee osteoarthritis is a joint disease which is characterized by degeneration of articular cartilage and subsequent subchondral bone changes. Polymorphisms of IL-17A/F gene were the recognized candidate genes associated with knee osteoarthritis risk although the results were conflicting. The aim of this study was to determine whether IL-17A(rs2275913) and IL-17F(rs763780) polymorphisms confer susceptibility to knee osteoarthritis. Method Literature search was performed in PubMed, Medline, Cochrane Library, Web of science, Embase, and Google Scholar (last search was updated on June 20, 2019), and assessing this association was performed by calculating odds ratios with 95% confidence intervals. Statistical heterogeneity was quantitatively evaluated by using the Q statistic with its p value and I2 statistic. Result Six case-control based studies were included involving IL-17A(rs2275913) (2134 cases and 2306 controls) and IL-17F(rs763780) (2134 cases and 2426 controls). The overall analysis suggested that the A allele of the rs2275913 polymorphism, and the C allele of the rs763780 polymorphism in the IL-17 gene may increase the risk of OA. However, subgroup analysis revealed that no association between IL-17A(rs2275913) gene and knee OA risk was found in Caucasian population. Conclusions This meta-analysis revealed that the IL-17A(rs2275913) gene polymorphisms may increase the risk of knee OA in Asians, and the IL-17F(rs763780) gene polymorphisms may increase the risk of knee OA both in Asians and Caucasians. However, because of the limitations of the present study, additional larger studies are needed to confirm our findings in the future.

XRCC1 gene polymorphisms and lung cancer susceptibility: a meta-analysis of 44 case–control studies

2012 ◽  
Vol 39 (10) ◽  
pp. 9535-9547 ◽  
Author(s):  
Liping Dai ◽  
Fujiao Duan ◽  
Peng Wang ◽  
Chunhua Song ◽  
Kaijuan Wang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Gene Polymorphisms ◽  
Cancer Susceptibility ◽  
Meta Analysis ◽  
Case Control ◽  
Case Control Studies ◽  
Xrcc1 Gene ◽  
Lung Cancer Susceptibility

scholarly journals Associations between EGFR gene polymorphisms and susceptibility to glioma: a systematic review and meta-analysis from GWAS and case-control studies

Oncotarget ◽  
2017 ◽  
Vol 8 (49) ◽  
pp. 86877-86885 ◽  
Author(s):  
Xiao Yu ◽  
Nian Rong Sun ◽  
Hai Tao Jang ◽  
Shi Wen Guo ◽  
Min Xue Lian
Keyword(s):  
Systematic Review ◽  
Gene Polymorphisms ◽  
Meta Analysis ◽  
Case Control ◽  
Case Control Studies ◽  
Egfr Gene

scholarly journals Association of TLR-2 Gene Polymorphisms with the Risk of Periodontitis: A Meta-Analysis

2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Chao Shan ◽  
Abasijiang Aisaiti ◽  
Zhong Peng Wu ◽  
Ting Ting Wang ◽  
Jin Zhao
Keyword(s):  
Gene Polymorphisms ◽  
Large Scale ◽  
Meta Analysis ◽  
Critical Role ◽  
Case Control ◽  
Recessive Model ◽  
Immune Gene ◽  
Case Control Studies ◽  
Codominant Model ◽  
Allelic Model

Background. Periodontitis is a kind of chronic infectious disease, affecting the health of billions of people. In recent years, a number of studies have shown that multiple immune gene polymorphisms are associated with the susceptibility to periodontitis, among which TLR-2 plays a critical role in periodontitis. But most of the studies reported TLR-2 gene polymorphism and susceptibility to periodontitis are not consistent. Therefore, we included all eligible studies in our study for further meta-analysis. Methods. We used electronic databases, including CNKI, PubMed, EMBASE, and Web of Science databases, and relevant research published through June, 2020. Selecting studies involved case-control trials. For all eligibility studies, odds ratios (ORs) and 95% confidence intervals (95% CI) are provided or can be calculated from the study data. The size of the combined effect was calculated using STATA 15.0. Results. Our meta-analysis included 14 articles representing 18 case-control studies with a total of 3873 cases and 3438 control subjects. Significant association was found between periodontitis and TLR-2 rs1898830 polymorphism under the allelic model (A allele vs. G allele: p=0.014, OR=1.208, 95% CI: 1.039-1.406), recessive model (GG vs. GA+AA: p=0.028, OR=0.755, 95% CI: 0.588-0.970), and codominant model (GG VS. AA: p=0.014, OR=0.681, 95% CI: 0.501-0.925). In subgroup analysis, TLR-2 rs5743708 polymorphism was associated with periodontitis risk in Asians under an allelic model (G allele vs. A allele: p=0.017, OR=12.064, 95% CI: 1.570-92.688), dominant model (GA+AA vs.GG: p=0.016, OR=0.08, 95% CI: 0.010-0.620), and codominant model (GA VS. GG: p=0.016, OR=1.026, 95% CI: 0.821-1.282). Conclusion. The TLR-2 rs1898830, rs5743708 polymorphism may be associated with susceptibility to periodontitis. In the future, genome-wide approaches and large-scale, multiethnic case-control trials are still needed.

scholarly journals Association between vitamin D receptor (VDR) polymorphisms and the risk of multiple sclerosis (MS): an updated meta-analysis

BMC Neurology ◽  
2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Danyal Imani ◽  
Bahman Razi ◽  
Morteza Motallebnezhad ◽  
Ramazan Rezaei
Keyword(s):  
Multiple Sclerosis ◽  
Vitamin D ◽  
Gene Polymorphisms ◽  
Genetic Model ◽  
Meta Analysis ◽  
Case Control ◽  
Case Control Studies ◽  
Asian Populations ◽  
Increased Risk ◽  
Apai Polymorphism

Abstract Background The association between the Vitamin D Receptor (VDR) gene polymorphism and the risk of Multiple sclerosis (MS) has been evaluated in several researches. However, the findings were inconsistent and inconclusive. Therefore, we set out a meta-analysis of all eligible published case-control studies to obtain an exact evaluation of the association between VDR gene polymorphisms and MS. Method All relevant studies reporting the association between the VDR gene FokI (rs2228570), or/and TaqI (rs731236) or/and BsmI (rs1544410) or/and ApaI (rs7975232) polymorphisms and susceptibility to MS published up to May, 2019 were identified by comprehensive systematic search in the electronic database of web of science, Scopus, and PubMed. After that, the strength of association between VDR gene polymorphisms and susceptibility to MS was evaluated by odds ratio (OR) and 95% confidence interval (CI). Results A total of 30 case–control studies were included in the meta-analysis. The overall results suggested a significant association between TaqI polymorphism and MS risk under heterozygote genetic model (OR = 1.27, 95%CI = 1.01–1.59, random effect). Moreover, the pooled results of subgroup analysis declined presence of significant association under all defined genetic model. In subgroup analysis, BsmI polymorphisms was associated with increased risk of MS under recessive model in Asian populations. On the other hand, ApaI polymorphism was associated with decreased risk of MS under recessive and aa vs. AA model in Asian populations. Conclusion This meta-analysis suggested a significant association between TaqI polymorphism and MS susceptibility. Furthermore, BsmI polymorphism was associated with increased risk of MS in Asian populations. In contrast, ApaI polymorphism was associated with decreased risk of MS in Asian populations. Future large-scale studies on gene–environment and gene–gene interactions are required to estimate risk factors and assist early diagnosis of patients at high risk for MS.

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