자궁내막증 환자의 정상위치 자궁내막 및 이소성 자궁내막에서의 EGF의 전령리보핵산 및 단백질의 발현
Expression of EGF mRNA and protein in eutopic and ectopic endometrial tissues of patients with endometriosis
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목적: 자궁내막증 환자의 정상위치 자궁내막조직과 이소성 자궁내막조직, 자궁내막증 소견을 보이지 않는 양성 부인과 질환 환자의 자궁내막조직에서 상피세포성장인자 전령리보핵산 (epidermal growth factor messenger ribonucleic acid, EGF mRNA) 과 단백질의 발현정도를 각각 비교, 분석하였다. 연구 방법: 2004년 10월부터 2005년 12월까지, 서울아산병원 산부인과에서 수술받고 병리조직학적 검사상 자궁내막증으로 확진된 환자들 중에서 최근 6개월간 자궁내막증에 대한 어떠한 치료도 받은 적이 없는 환자들 34명을 연구군으로 하고, 정상 월경주기를 가진 여성들 중에서 같은 기간 동안에 자궁내막증 이외의 다른 양성 부인과 질환으로 수술받은 환자들 14명을 대조군으로 하였다. 연구군에서 자궁내막종 낭종 내피 일부를 절제하여 이소성 자궁내막조직을 얻었고, 연구군과 대조군의 정상위치의 자궁내막조직은 수술중 생검을 통해 얻었다. 각 자궁내막조직 내의 EGF mRNA의 발현정도는 실시간 역전사 중합효소연쇄반응을 이용하여 정량화하였고 단백질 발현정도는 Western blot으로 확인하였다. 결과: 자궁내막증 환자군의 정상위치 (P<0.01) 및 이소성 (P<0.01) 자궁내막조직 내에서의 EGF mRNA 발현량은 증식기 및 분비기 모두에서 대조군의 자궁내막조직에 비해 유의하게 적었다. 또한 EGF 단백질 발현 정도도 자궁내막증 환자의 정상위치 및 이소성 자궁내막조직에서 대조군에 비해 적은것으로 나타났다. 결론: 자궁내막증의 발생과 자궁내막조직 내에서 EGF의 저발현은 관련이 있으며, 정상위치 자궁내막 자체에서 특정 인자의 변화 또는 결함이 자궁내막증의 생성에 중요한 역할을 할 것으로 생각된다.
Abstract
Objective: This study was performed to investigate the expression of EGF mRNA and protein in eutopic and ectopic endometrial tissues of the patients with endometriosis and in eutopic endometrial tissues of the patients without endometriosis. Methods: Study group was composed of 34 women with endometriosis taking surgical treatment at the Department of Obstetrics and Gynecology, Asan Medical Center, from October 2004 to December 2005. Control group consisted of 14 women who had undergone surgical treatment for cervical intraepithelial neoplasia or benign gynecologic conditions other than endometriosis during the same period. Eutopic endometrial tissues of both groups and ectopic endometrial tissues of study group were collected during the operations. Real time reverse transcriptase-polymerase chain reaction (RT-PCR) was used to quantify EGF mRNA of these tissues. Western blot analysis was performed to ascertain the expression of EGF protein. Results: The expressions of EGF mRNA were significantly lower in both eutopic (P<0.01) and ectopic (P<0.01) endometrial tissues of the women with endometriosis than in eutopic endometrial tissues of control group. The expressions of EGF protein were shown to be lower in both eutopic and ectopic endometrial tissues of the women with endometriosis than in eutopic endometrial tissues of control group. Conclusion: We found some correlations between the lower expression of EGF in endometrial tissues and the development of endometriosis. In addition, the change or defect of some factors in the eutopic endometrium might play an important role in the development of endometriosis.
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