The association between polymorphisms of ${\beta}$-adrenoceptors and preeclampsia

  • Lim, Ji-Hyae (Laboratory of Medical Genetics, Medical research institute Cheil General Hospital and Women's Healthcare Center) ;
  • Kim, Shin-Young (Laboratory of Medical Genetics, Medical research institute Cheil General Hospital and Women's Healthcare Center) ;
  • Park, So-Yeon (Laboratory of Medical Genetics, Medical research institute Cheil General Hospital and Women's Healthcare Center) ;
  • Yang, Jae-Hyug (Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center KwanDong University college of Medicine) ;
  • Han, Jung-Yeol (Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center KwanDong University college of Medicine) ;
  • Hong, Dal-Soo (Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center KwanDong University college of Medicine) ;
  • Choi, June-Seek (Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center KwanDong University college of Medicine) ;
  • Choi, Kyu-Hong (Department of Obstetrics and Gynecology, Cheil General Hospital and Women's Healthcare Center KwanDong University college of Medicine) ;
  • Ryu, Hyun-Mee (Laboratory of Medical Genetics, Medical research institute Cheil General Hospital and Women's Healthcare Center)
  • Published : 2007.12.01

Abstract

Purpose : The ${\beta}$-adrenoceptors are pharmacologically classified into ${\beta}_1$-, ${\beta}_2$- and ${\beta}_3$-adrenoceptor. The gene of each subtype has polymorphisms related to their function (${\beta}_1$-adrenoceptor: Ser49Gly, ${\beta}_2$-adrenoceptor: Gln27Glu, ${\beta}_3$-adrenoceptor: Trp64Arg). The objectives of this study were to analyse the allelic and genotypic distribution of the representative polymorphism of ${\beta}$-adrenoceptors in preeclampsia and to investigate whether combined genotype of ${\beta}$-adrenoceptors may be associated with preeclampsia. Methods : Blood samples were collected from a Korean population (159 preeclamptic pregnancies and 168 normotensive pregnancies). The ${\beta}_1$-, ${\beta}_2$- and ${\beta}_3$-adrenoceptor genotypes was determined using polymerase chain reaction-restriction fragment length polymorphism. Results : There were no differences in allelic and genotypic distribution of ${\beta}_1$- and ${\beta}_2$-adrenoceptor polymorphisms between the two groups. However, the Arg allele of ${\beta}_3$-adrenoceptor polymorphism were more frequent in preecalmpsia than in controls (P<0.05, OR=1.57, 95% CI=1.01-2.46). Moreover, prevalence of genotype carrying heterozygote of ${\beta}_3$-adrenoceptor polymorphism was increased in preeclampsia compared with controls (P<0.05, OR 1.76, 95% CI 1.06-2.92). When combination of the three polymorphisms were evaluated, pregnancies with the particular combined genotype that is consisted of heterozygote of ${\beta}_1$-, ${\beta}_3$-adrenoceptor and wild homozygote of ${\beta}_2$-adrenoceptor (Ser/Gly, Gln/Gln, Trp/Arg), showed a significant increase in the risk of preeclampsia (P<0.05, OR=3.01, 95% CI 1.12-8.08). Conclusion : A particular combined genotype (Ser/Gly, Gln/Gln, Trp/Arg) of - adrenoceptors was associated with the risk of preeclampsia.

목 적:아드레너직 수용체는 약물학적 분류에 의해 ${\beta}_1$-, ${\beta}_2$-, ${\beta}_3$ 아드레너직 수용체로 구분된다. 각 아류형 수용체의 유전자는 수용체의 기능에 영향을 주는 다형성들을 가진다(1 아드레너직 수용체: Ser49Gly, ${\beta}_2$ 아드레너직 수용체: Gln27Glu,${\beta}_3$ 아드레너직 수용체: Trp64Arg). 이번 연구의 목적은 자간전증에서 아드레너직 수용체 아류형 각각의 대립 유전자와 유전자형의 분포를 연구하고, ${\beta}$ 아드레너직 수용체들의 조합된 유전자형이 자간전증과 관계가 있는지 조사하는 것이다. 방 법:한국인 자간전증 임산부 159명과 정상 임산부 168명으로부터 DNA 추출을 위해 혈액 샘플을 수집하였다. 각 아류형 수용체들의 유전자형은 중합효소 연쇄반응과 제한효소 절단 절편의 길이 다양성에 기초한 유전자 검색법을 사용하여 결정하였다. 결 과:${\beta}_1$${\beta}_2$ 아드레너직 수용체 유전자의 다형성 연구에서, 각 수용체 유전자들의 대립 유전자와 유전자형 분포는 두 군 간에 차이가 없었다. 그러나 ${\beta}_3$ 아드레너직 수용체 유전자의 돌연변이 대립유전자는 정상군보다 자간전증군에서 보다 빈번하게 나타났다(P<0.05, 위험도 1.57, 95% 신뢰구간 1.01-2.46). 더욱이 ${\beta}_3$ 아드레너직 수용체 유전자의 이형접합체는 정상군과 비교했을 때 자간전증군에서 증가하였다(P<0.05, 위험도 1.76, 95% 신뢰구간 1.06-2.92). 아류형 아드레너직 수용체들의 세 가지 다형성들을 조합하여 평가하였을 때, ${\beta}_1$${\beta}_3$ 아드레너직 수용체는 이형접합체이고 ${\beta}_2$ 아드레너직 수용체는 정상 동형접합체로 구성된 특별한 유전자형을 지닌 임산부는 자간전증의 위험이 유의성 있게 증가하였다(P<0.05, 위험도 3.01, 95% 신뢰구간 1.12-8.08). 결 론:아류형 아드레너직 수용체들의 조합된 유전자형(Ser/Gly, Gln/Gln, Trp/Arg)은 자간전증의 위험과 관계가 있었다.

Keywords