title: [Association of genetic polymorphisms in human leukocyte antigen-DQA1 with intrahepatic cholestasis of pregnancy in Chengdu district].
abstract: OBJECTIVE
  To explore the relationship between human leukocyte antigen-DQA1 (HLA-DQA1) allele gene polymorphism and intrahepatic cholestasis of pregnancy (ICP).
  
  
  METHODS
  Forty-five patients with ICP, eighteen ICP families, forty-five normal pregnant women and eighteen normal control families were tested for HLA-DQA1 allele gene polymorphism by polymerase chain reaction with sequence-specific primer (PCR-SSP) method.
  
  
  RESULTS
  The frequency of HLA-DQA1*0301 in normal pregnant women was markedly higher than that in the ICP group (P>0.05). No significant differences were observed between the frequencies of other detected HLA-DQA1 alleles in both groups. The analysis of feto-maternal or couples sharing of the HLA-DQA1 alleles showed that no significant differences were observed between the two groups.
  
  
  CONCLUSIONS
  The above findings suggest that there is no significant association between the genetic polymorphisms in HLA-DQA1 and ICP in Chengdu district; HLA-DQA1*0301 may be a protective gene against ICP. It may prevent the development of ICP.
authors.affiliation: Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, Sichuan, 610041 PR China.
authors.forename: Bing
authors.initials: B
authors.lastname: Peng
authors.forename: Qiang
authors.initials: Q
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Hai
authors.initials: H
authors.lastname: Zou
authors.forename: Shu-yun
authors.initials: SY
authors.lastname: Liu
mesh_terms: D000328:Adult; D000483:Alleles; D002780:Cholestasis, Intrahepatic / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000235:genetics; D006683:HLA-DQ Antigens / Q000235:genetics*; D006801:Humans; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic / Q000235:genetics*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000235:genetics
chemical_list: D006683:HLA-DQ Antigens