Clinical and Experimental Reproductive Medicine

The Korean Society for Reproductive Medicine (대한생식의학회)
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The effect of LH Receptor in the Pregnancy of Poor Responders

황체호르몬 수용체의 발현이 저반응 환자군의 임신에 미치는 영향

  • Lee, Jung-Bok (Department of Medical Research Center, MizMedi Hospital) ;
  • Do, Byung-Rok (Department of Medical Research Center, MizMedi Hospital) ;
  • Kim, Eun-Soo (Department of Medical Research Center, MizMedi Hospital) ;
  • Kim, Myung-Hee (Department of Medical Research Center, MizMedi Hospital) ;
  • Chun, Eun-Kyung (Department of Medical Research Center, MizMedi Hospital) ;
  • Jeong, Hyeon-Jeong (Department of Medical Research Center, MizMedi Hospital) ;
  • Roh, Sung-Il (Department of Medical Research Center, MizMedi Hospital) ;
  • Kim, Moon-Kyoo (Department of Life Science, College of Natural Sciences, Hanyang University) ;
  • Yoon, Hyun-Soo (Department of Medical Research Center, MizMedi Hospital)
  • 이정복 (미즈메디병원 의과학연구소) ;
  • 도병록 (미즈메디병원 의과학연구소) ;
  • 김은수 (미즈메디병원 의과학연구소) ;
  • 김명희 (미즈메디병원 의과학연구소) ;
  • 천은경 (미즈메디병원 의과학연구소) ;
  • 정현정 (미즈메디병원 의과학연구소) ;
  • 노성일 (미즈메디병원 의과학연구소) ;
  • 김문규 (한양대학교 자연과학대학 생명과학과) ;
  • 윤현수 (미즈메디병원 의과학연구소)
  • Published : 2004.06.30
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Abstract

Objectives: To investigate the effect of LH receptor in folliculogenesis, we confirm the expression level of LH receptor (LH-R) mRNA in human granulosa cells (GCs) and its expression levels were analyzed by comparison to embryo developmental rate and pregnancy rate. Materials and Methods: GCs were obtained at the time of oocyte retrieval from the patients undergoing IVF-ET program. The patients were divided into two groups: Group I (n=20) is poor responder (retrieved oocyte(s)$\leq$3ea), Group II (n=80) is normal responder (retrieved oocytes>3ea). After the extraction of total RNA, semiquantitative RT-PCR was performed and the expression level of LH-R mRNA was normalized by $\beta$-actin. Statistical analysis was performed by using $X^2$ test, Student's t-test and Pearson correlation. Results: In Group II, the relative values of LH-R mRNA (0.680 vs. 0.463, p<0.005) and pregnancy rate (54.7% vs. 23.1%, p<0.05) were significantly higher than in Group I. Number of retrieved oocyte(s) was gradually increased when the expression of LH-R mRNA was increased (p<0.05). But the quality of retrieved oocyte and transferred embryo were not related with the expression of LH-R mRNA. When the pregnancy rate was compared with FSH only group and FSH combined with hMG group in the ovarian stimulation protocol, FSH combined with hMG group was significantly higher than FSH only group in Group I (37.5% vs. 0%), and the expression of LH-R mRNA was significantly higher in hMG combined group than FSH only group (p<0.05). Conclusion: Expression level of LH-R mRNA has important role in ovarian function related with the response to gonadotrophin in human folliculogenesis. Furthermore these data might provide the evidence that additional use of hMG is helpful to poor responders.

Keywords

References

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