Meta-analysis of the relationship between apolipoprotein E gene polymorphism and susceptibility of childhood obesity / 临床儿科杂志

ABSTRACT

Objective To investigate the relationship of apolipoprotein E (ApoE) gene polymorphism and the suscepti-bility of childhood obesity Methods The database of PubMed, OVID, Science online, BMJ, Springer Link, Medlink, China Journal Full-text and Wanfang were systematically searched. The studies regarding ApoE polymorphism associated with child-hood obesity from March 1996 to March 2013 were included in the research. The data were extracted, evaluated and hetero-geneity tested using software Rev Man 5.0. Results A total of 84 related literature were retrieved, and 9 of them were eligible with 767 obese children and 867 normal children included. According to the heterogeneity test results, the relationship between ApoE gene allele,ε2,ε3,ε4 and childhood obesity occurs was analyzed by means of ifxed or random effect model. The results indicated that, comparing to children with normal body mass, the OR value and 95%CI of ApoE allele geneε2,ε3,ε4 in obese children were 1.10 (0.85, 1.43), 0.66 (0.55, 0.80), and 1.82 (1.31, 2.52) respectively. The differences ofε3 andε4 between normal and obese children were signiifcant (P<0.001) but notε2 (P=0.45). The sensitivity analysis in each study was stable and the funnel graphics were basically symmetric. Conclusions ApoE gene polymorphism is closely related to childhood obesity withε3 allele as a protective factor whileε4 allele as a risk factor.