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Objectives: The involvement of oxidative stress in the pathophysiology of preeclampsia (PE) has been already suggested. In this present study, we aimed to investigate the association of the genetic frequency of heme oxygense-1 (HMOX1) polymorphism with PE in Chinese Han women. Methods: We researched the genetic distribution of rs2071746 polymorphism in HMOX1 by the TaqMan allelic discrimination real-time PCR between 1235 PE patients and 1720 healthy women. Results: We found there were′t significant differences in the distribution of HMOX1 rs2071746 polymorphism in PE compared to the control group (rs2071746, genotype χ2 = 0.282, P = 0.869 and allele χ2 = 0.027, P = 0.869, OR = 1.009, 95% = 0.909–1.120). Conclusion: The rs2071746 polymorphism in HMOX1 might not be related to PE in Chinese women, although further investigations should be conducted to confirm our findings. [ABSTRACT FROM AUTHOR]

Objective: We investigated whether the CXCL12-801G/A polymorphism was associated with preeclampsia (PE) susceptibility in a Chinese Han population.Methods: We examined 912 PE women and 1025 controls for the CXCL12-801G/A polymorphism by polymerase chain reaction (PCR) and correlations with clinical characteristics were examined.Results: No significant differences in genotypic and allelic frequencies of CXCL12-G801A were found between cases and controls (genotype:χ2= 2.095,p= 0.351; allele:χ2= 1.713,p= 0.191). There were also no significant differences between early/late-onset or mild/severe PE and control groups.Conclusion: The results indicate that 801G/A inCXCL12may not play a major role in pathogenesis of PE in a Chinese Han population. [ABSTRACT FROM PUBLISHER]

Objective: Previous studies have been indicated that catechol-O-methyltransferase gene (COMT) might play a significant role in the development of preeclampsia (PE). Our study aims to investigate the association between polymorphism in COMT with the susceptibility to PE in Chinese Han women.Method: A total of 1028 PE patients and 1399 normal pregnant women were enrolled. We detected the genotyping of COMT Val158Met loci by the TaqMan allelic discrimination real-time PCR .Results: No significant difference in the genotypic and allelic distribution was found between the two groups (genotype: X2 = 0.583, p = 0.747; allele:X2 = 0.526, p = 0.468).Conclusion: The COMT Val158Met polymorphism might not be associated with PE in Chinese women. [ABSTRACT FROM AUTHOR]

Background/Aims: Several lines of evidence have been reported that oxidative stress plays an important role in the pathogenesis of Preeclampsia (PE). Therefore, this research is aimed to investigate whether polymorphisms of CYBA are related to susceptibility to PE in Chinese Han women. Methods: We studied the genetic frequency of the rs9932581 and 1049255 polymorphisms in CYBA in 1029 PE patients and 1400 controls of later pregnant women by the TaqMan allelic discrimination real-time PCR and a case-control model. Results: Our research indicated that no significant differences were found for the genotypic or allelic frequencies at the two polymorphic sites in CYBA between PE patients and controls. To further study the relationship between the polymorphic sites and PE, we also found that there is no significant difference in the genetic distributions identified between the mild or severe PE and early or the late-onset PE and controls. Conclusion: The study demonstrated that the genetic variants of rs9932581 and rs1049255 in CYBA might not be associated with PE. However, investigations of genetic variability that influence on the disease outcome are needed in other large prospective populations or regions, so the complicated interconnection of genetic and environmental elements can be emulated for better understanding. [ABSTRACT FROM AUTHOR]

Background/Aims: Accumulating evidence suggests that an excessive maternal systemic inflammatory response to pregnancy with exaggerated activation of the innate immune system plays a critical role in the development of preeclampsia (PE). In this study, we investigated whether polymorphisms in the Toll-like receptor 3 (TLR3) gene are associated with susceptibility to PE in the Chinese Han population. Methods: We recruited 987 PE patients and 1227 healthy pregnant women. Two polymorphisms (rs3775291 and rs3775296) located in TLR3 were genotyped by TaqMan allelic discrimination real-time PCR. The association between the genotype or allele frequencies and PE was examined using chi-square tests. Clinical data were compared between cases and controls using Student's t test. Results: No significant difference was determined in the genetic distribution of rs3775291 and rs3775296 between cases and controls. There were also no significant differences in the genotype and allele frequencies of either SNP between healthy pregnant women and patients with late or early onset PE, or with mild or severe PE. Conclusion: Although this is the first study of the association between TLR3 polymorphisms and preeclampsia, we found that TLR3 polymorphisms are unlikely to play a significant role in the development of preeclampsia in the Chinese Han population. © 2015 The Author(s) Published by S. Karger AG, Basel [ABSTRACT FROM AUTHOR]