Korean J Obstet Gynecol.  2004 Mar;47(3):515-522.

Expression of Vascular Endothelial Growth Factor Receptor mRNA in Eutopic and Ectopic Endometrial Tissues of Patients with Endometriosis

  • 1Department of Obstetrics and Gynecology, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.


To Investigate the expression of vascular endothelial growth factor receptor-1, -2, and -3 (VEGFR-1, -2, and -3) mRNA in the eutopic and ectopic tissues in women with endometriosis.
At the time of laparoscopy or laparotomy for endometriosis, infertility or other benign gynecologic conditions, a biopsy specimen was taken from the endometrial cavity and a peritoneal endometriotic implant simultaneously whenever appropriate. For control samples, endometrial tissues were obtained from women without visual evidence of endomtriosis. We employed real time quantitative RT-PCR to quantify VEGFR gene expression of these tissues. Comparisions between each group were made using ANOVA (analysis of variance) and Kruskal-Wallis test and statistical significance was defined as p<0.05.
The expression of VEGFR-1, -2, and, -3 mRNA was significantly higher in both eutopic and ectopic endometrial tissues of women with endometriosis than in control endometrial tissues during both proliferative and mid-secretory phase. In ectopic endometrial tissue, VEGFR-1 mRNA expression was significantly increased during the mid-secretory phase compared to the proliferative phase. There was a marked increase especially in VEGFR-3 mRNA expression in ectopic endometriotic lesions during the proliferative phase but its expression decreased during the mid-secretory phase.
mRNA for VEGFR-1, -2, and -3 in an endometriotic lesions might be differentially expressed and their expression appears to be associated with the development of endometriosis.


Endometriosis; Angiogenesis; VEGF; VEGFR
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