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Increased vascular surface density in ovarian endometriosis
S Inan1, N K Kuscu, S Vatansever
1Department of Histology and Embryology, Celal Bayar University, School of Medicine, Manisa, Turkey.
Summary
Endometriosis shows increased blood vessel growth, indicated by higher vascular surface density in endometriotic tissue compared to normal ovaries. This suggests that promoting new blood vessel formation (angiogenesis) is crucial in endometriosis development.
Area of Science:
- Gynecology
- Pathology
- Vascular Biology
Background:
- Endometriosis is a condition characterized by the presence of endometrial-like tissue outside the uterus.
- Angiogenesis, the formation of new blood vessels, is thought to play a role in the growth and maintenance of endometriotic implants.
Purpose of the Study:
- To investigate the presence of angiogenesis-related factors in endometriomas.
- To evaluate vascular surface densities in endometriotic tissues compared to normal ovarian tissues.
Main Methods:
- Histological immunostaining of 30 ovarian samples (10 endometriomas, 10 follicular phase controls, 10 luteal phase controls) for von Willebrand factor (vWF) and CD34.
- Quantification of vascular surface density using an intercept grid at x100 magnification.
Main Results:
- Mean vascular surface density was significantly higher in endometriomas (164.01 ± 21.26 for vWF, 172.97 ± 25.64 for CD34) compared to follicular (125.15 ± 11.28 for vWF, 138.65 ± 32.21 for CD34) and luteal phase controls (117.44 ± 9.27 for vWF, 120.34 ± 18.40 for CD34) (p < 0.001).
- No significant difference in vascular density was observed between normal ovarian samples from the follicular and luteal phases.
Conclusions:
- Endometriotic tissues exhibit significantly elevated vascular surface density, indicating angiogenic properties.
- The activation of angiogenesis is likely a key factor in the pathogenesis of endometriosis.