ORIGINAL ARTICLE: Endometrial Osteopontin mRNA Expression and Plasma Osteopontin Levels are Increased in Patients with Endometriosis
Article first published online: 2 MAR 2009
© 2009 The Authors. Journal compilation © 2009 John Wiley & Sons A/S
American Journal of Reproductive Immunology
Volume 61, Issue 4, pages 286–293, April 2009
How to Cite
Cho, S., Ahn, Y. S., Choi, Y. S., Seo, S. K., Nam, A., Kim, H. Y., Kim, J.-H., Park, K. H., Cho, D. J. and Lee, B. S. (2009), ORIGINAL ARTICLE: Endometrial Osteopontin mRNA Expression and Plasma Osteopontin Levels are Increased in Patients with Endometriosis. American Journal of Reproductive Immunology, 61: 286–293. doi: 10.1111/j.1600-0897.2009.00692.x
- Issue published online: 2 MAR 2009
- Article first published online: 2 MAR 2009
- Submitted October 30, 2008; accepted January 30, 2009.
Problem The aim of this study was to evaluate osteopontin (OPN) mRNA expression in eutopic endometrium and plasma OPN levels in patients with endometriosis.
Method of study A total of 79 patients with histologically confirmed endometriosis and 43 patients without endometriosis participated in this study. OPN mRNA expression in endometrial tissues was measured by real-time quantitative polymerase chain reaction (PCR) and plasma concentrations of OPN were quantified using a specific commercial sandwich enzyme-linked immunosorbent assays (ELISA).
Results Osteopontin mRNA expression in endometrial tissue was significantly higher in women with endometriosis than in controls (P = 0.010). The mean plasma levels of OPN (mean ± S.E.M.) in patients with endometriosis and controls were 407.31 ± 37.80 ng/mL and 165.84 ± 19.29 ng/mL, respectively (P < 0.001). Receiver operating characteristic (ROC) analysis for plasma OPN revealed an area under the curve (AUC) of 0.894, with a sensitivity of 93.0%, specificity of 72.4%, positive likelihood ratio of 3.37, and negative likelihood ratio of 0.1 using a cut-off value of 167.68 ng/mL.
Conclusion Osteopontin may be involved in the pathogenesis of endometriosis and plasma OPN may be a useful non-invasive marker for the diagnosis of endometriosis.