title: Studies on the compatibility of HLA-Class II alleles in patient couples with severe pre-eclampsia using PCR-RFLP methods.
abstract: OBJECTIVE
  In this study, we investigated whether or not significant compatibility of human leukocyte antigen (HLA)-class II alleles exists between spouses with severe pre-eclampsia (PE) (including gestational hypertension, GH).
  
  
  METHODS
  The HLA-class II genotypes were determined using a polymerase chain reaction-restriction fragment length polymorphism method. The number of incompatible alleles in 57 patient couples with severe PE (including GH) were determined, and compared with that in 74 control couples.
  
  
  RESULTS
  The number of patient couples and control couples with each number of mismatched alleles of the HLA-DR, -DQ, and -DP genotypes was as follows. The number of patient couples with zero, one, two, three, and four-allele mismatches was 41 (72.9%), and with five and six-allele mismatches was 16 (27.1%). On the other hand, the number of control couples with zero, one, two, three, and four-allele mismatches was 38 (51.4%), and with five and six-allele mismatches was 36 (48.6%). Thus, the number of patient couples with five and six-allele mismatches was significantly lower compared with that in control couples. The same result was obtained as regards the mismatched alleles of the HLA-DR, -DQ, and -DP phenotypes.
  
  
  CONCLUSIONS
  These findings suggest that significant compatibility of HLA-class II alleles between spouses is implicated in the genesis of PE (including GH).
authors.affiliation: Department of Obstetrics and Gynecology, Niigata University School of Medicine, Niigata, Japan.
authors.forename: Izumi
authors.initials: I
authors.lastname: Ooki
authors.forename: Koichi
authors.initials: K
authors.lastname: Takakuwa
authors.forename: Mami
authors.initials: M
authors.lastname: Akashi
authors.forename: Taro
authors.initials: T
authors.lastname: Nonaka
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Yokoo
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D000328:Adult; D000483:Alleles; D005191:Family Characteristics; D005260:Female; D005838:Genotype; D006648:Histocompatibility; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D011225:Pre-Eclampsia / Q000235:genetics; D011247:Pregnancy; D018454:Spouses
chemical_list: D000949:Histocompatibility Antigens Class II