The expression of aromatase (via CYP19 and the CYP19 PII promoter) and the orphan nuclear receptor family members, liver receptor homologue-1 (LRH-1) and steroidogenic factor-1 (SF-1) in cultured luteinized granulosa cells from women with endometriosis were investigated.Methods:
Luteinized granulosa cells from patients undergoing in vitro fertilization (16 patients with endometriosis and 28 controls) were examined for messenger ribonucleic acid (mRNA) expression of CYP19, CYP19 PII, LRH-1 and SF-1, determined by quantitative reverse transcription-polymerase chain reaction. Student's t-test, the Mann–Whitney U test and Spearman's rank correlation were used for statistical analysis.Results:
The number of high quality embryos in the endometriosis group was significantly lower than in the control group. The mRNA expression levels of CYP19, CYP19 PII, LRH-1 and SF-1 in granulosa-lutein cells were decreased in women with endometriosis compared to the control group. The simultaneous down-regulation expression of LRH-1, SF-1 and CYP19 PII in endometriotic granulosa cells indicated their positive correlation.Conclusion:
Our results demonstrate aberrant expressions of SF-1 and LRH-1 in endometriotic granulosa-lutein cells. This finding may be helpful in understanding infertility associated with endometriosis and reduced P450 aromatase activity in endometriotic granulosa cells.