PMID- 25729992 OWN - NLM STAT- MEDLINE DCOM- 20160120 LR - 20220321 IS - 1676-5680 (Electronic) IS - 1676-5680 (Linking) VI - 14 IP - 1 DP - 2015 Jan 26 TI - TNF-alphaG-308A polymorphism is associated with insulin resistance: a meta-analysis. PG - 563-73 LID - 10.4238/2015.January.26.11 [doi] AB - Tumor necrosis factor-alpha (TNF-alpha) promoter polymorphisms has been reported to be associated with obesity and insulin resistance and gained widespread attention. However, results obtained so far are quite conf‍‍licting. We therefore performed a meta-analysis to address this issue, basing on 17 studies from electronic databases (MEDLINE and EMBASE). No evidence of significant effect of TNF-alphaG-308A polymorphism on body mass index (BMI) or obesity risk was detected (BMI: WMDRE = 0.05, 95%CI: -0.62 to 0.73; risk of obesity: ORFE = 1.09, 95%CI: 0.87 to 1.35). G-308A variant was significantly associated with increased insulin levels in the overall (SMDFE = 0.12, 95%CI: 0.03 to 0.20) and obese subgroup analysis (SMDFE = 0.16, 95%CI: 0.03 to 0.29). In total, no significant result was observed for the association between TNF-alpha G-308A variant and HOMA-IR index. Nevertheless, subgroup analysis showed G-308A polymorphism was significantly associated with increased HOMA-IR in Caucasians (WMDFE = 0.49, 95%CI: 0.03 to 0.94). Our results indicate that TNF-alphaG-308A polymorphism has a significant effect on insulin resistance. However, it is unlikely that G-308A variant contributes to obesity. FAU - Wang, H G AU - Wang HG AD - Institute of Immunopharmacology and Immunotherapy, School of Pharmacy, Shandong University, Jinan, China. FAU - Yang, J AU - Yang J AD - Department of Pediatric, Qilu Hospital, Shandong University, Jinan, China. FAU - Han, H AU - Han H AD - Department of Emergency, Qilu Hospital, Shandong University, Jinan, China. FAU - Xu, F AU - Xu F AD - Department of Emergency, Qilu Hospital, Shandong University, Jinan, China. FAU - Bian, Y AU - Bian Y AD - Department of Emergency, Qilu Hospital, Shandong University, Jinan, China. FAU - Zhang, H AU - Zhang H AD - Department of Emergency, Qilu Hospital, Shandong University, Jinan, China. FAU - Wang, J L AU - Wang JL AD - Department of Emergency, Qilu Hospital, Shandong University, Jinan, China wangjiali_2000@126.com. LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't DEP - 20150126 PL - Brazil TA - Genet Mol Res JT - Genetics and molecular research : GMR JID - 101169387 RN - 0 (Insulin) RN - 0 (TNF protein, human) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adult MH - Aged MH - Body Mass Index MH - Female MH - *Genetic Association Studies MH - *Genetic Predisposition to Disease MH - Humans MH - Insulin/blood MH - Insulin Resistance/*genetics MH - Male MH - Middle Aged MH - Obesity/blood/genetics MH - Polymorphism, Single Nucleotide/*genetics MH - Publication Bias MH - Risk Factors MH - Tumor Necrosis Factor-alpha/*genetics MH - Young Adult EDAT- 2015/03/03 06:00 MHDA- 2016/01/21 06:00 CRDT- 2015/03/03 06:00 PHST- 2015/03/03 06:00 [entrez] PHST- 2015/03/03 06:00 [pubmed] PHST- 2016/01/21 06:00 [medline] AID - gmr4467 [pii] AID - 10.4238/2015.January.26.11 [doi] PST - epublish SO - Genet Mol Res. 2015 Jan 26;14(1):563-73. doi: 10.4238/2015.January.26.11.