title: Interleukin-10 gene promoter polymorphisms and their protein production in peritoneal fluid in patients with endometriosis.
abstract: Although associations of interleukin-10 (IL-10) gene promoter polymorphisms and their protein production with endometriosis risk have been reported, the correlations remain controversial. The objective of this study was to determine IL-10 gene promoter polymorphisms at -1082, -819 and -592 sites and their protein production in peritoneal fluid (PF) in patients with and without endometriosis. IL-10 gene promoter polymorphisms at -1082 site were detected by amplification refractory mutation system (ARMS)-PCR and that at -819 and -592 sites was genotyped by restriction fragment length polymorphism (RFLP)-PCR. Protein levels of IL-10 in PF were measured by enzyme-linked immunosorbent assay (ELISA). There were no significant differences in the genotype and allele frequencies of IL-10 gene promoter polymorphisms at position -1082 between the endometriosis and the control groups. However, the frequency of -819 or -592 C alleles was significantly increased in patients with endometriosis compared with controls. The protein levels of IL-10 in PF were statistically higher in the endometriosis group than in the control group. Moreover, the polymorphisms at -1082, -819 and -592 sites were associated with protein levels of IL-10 in PF in the endometriosis group while in the control group only the polymorphisms at position -1082 correlated with protein levels. Increased frequency of -819 or -592 C allele and increased protein production of IL-10 in PF in patients with endometriosis compared with controls and correlations of polymorphisms at -819 and -592 sites with protein levels of IL-10 in PF in patients with endometriosis may suggest that polymorphisms at -819 and -592 sites and their protein production are associated with endometriosis risk.
authors.affiliation: Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou Zhejiang, PR China.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: P
authors.initials: P
authors.lastname: Hei
authors.forename: L
authors.initials: L
authors.lastname: Deng
authors.forename: J
authors.initials: J
authors.lastname: Lin
mesh_terms: D001202:Ascitic Fluid / Q000378:metabolism* / Q000473:pathology; D018450:Disease Progression; D004715:Endometriosis / Q000235:genetics* / Q000378:metabolism* / Q000473:pathology; D005260:Female; D005787:Gene Frequency; D006239:Haplotypes; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics* / Q000378:metabolism*; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic
chemical_list: C508609:IL10 protein, human; D016753:Interleukin-10