Vascular endothelial growth factor and its soluble receptor in ovarian pathology
P G Artini1, F Cristello, M Monti
1Department of Reproductive Medicine and Child Development, Division of Obstetrics and Gynecology, S. Chiara Hospital, University of Pisa, Pisa, Italy. g.artini@obgyn.med.unipi.it
Objective:
The soluble form of the vascular endothelial growth factor (VEGF) receptor, s-VEGFR-1, may negatively regulate the action of VEGF. Our purpose was to better understand the regulation of angiogenetic processes in ovarian cysts.
Methods:
Seventy-three women, 36 with serous cystoadenoma, 30 with ovarian endometriosis and seven with cystoadenocarcinoma, were enrolled. We calculated both VEGF and s-VEGFR-1 levels in cystic fluid and a VEGF activity index by means of the ratio VEGF/s-VEGFR-1. Student's t test was used for the statistical analysis.
Results:
We found higher VEGF concentration in both endometriotic and malignant lesions than in serous cystoadenoma (p=0.03 and 0.001, respectively). Also s-VEGFR-1 concentration was higher in endometrioma than in serous cysts (p=0.005); however, there was no statistically significant difference between cystoadenoma and the malignant lesions (p=0.15). VEGF activity index in cystoadenoma, endometriotic and malignant lesions was 0.61, 0.27 and 0.50, respectively.
Conclusions:
VEGF certainly has an important role in both ovarian endometriosis and for cancer progression; however, the activity index may be better to investigate the real role of VEGF in the pathology we have considered.
Insights
Vascular Endothelial Growth Factor (VEGF) plays a role in ovarian endometriosis and cancer. The VEGF activity index, calculated using VEGF and its receptor s-VEGFR-1, may better reflect VEGF
Area of Science:
- Gynecologic Oncology
- Reproductive Endocrinology
- Molecular Biology
Background:
- Angiogenesis, the formation of new blood vessels, is crucial for ovarian cyst development and progression.
- Vascular Endothelial Growth Factor (VEGF) is a key regulator of angiogenesis.
- The soluble form of VEGF receptor 1 (s-VEGFR-1) can inhibit VEGF activity, potentially modulating angiogenesis.
Purpose of the Study:
- To investigate the role of VEGF and its inhibitor s-VEGFR-1 in various ovarian cyst types.
- To understand the regulation of angiogenic processes within ovarian cysts.
- To evaluate the utility of a VEGF activity index in assessing VEGF's role in ovarian pathologies.
Main Methods:
- Analysis of VEGF and s-VEGFR-1 levels in cystic fluid from 73 women with serous cystoadenoma, ovarian endometriosis, or cystoadenocarcinoma.
- Calculation of a VEGF activity index using the ratio of VEGF to s-VEGFR-1.
- Statistical analysis using Student's t test to compare VEGF and s-VEGFR-1 levels and activity index across different cyst types.
Main Results:
- Elevated VEGF concentrations were observed in endometriotic and malignant ovarian lesions compared to serous cystoadenomas.
- s-VEGFR-1 levels were significantly higher in endometriomas than in serous cysts.
- The VEGF activity index varied across lesion types, suggesting differential regulation of VEGF activity.
Conclusions:
- VEGF is implicated in the pathogenesis of ovarian endometriosis and the progression of ovarian cancer.
- The VEGF activity index provides a more nuanced understanding of VEGF's functional role in ovarian cyst pathologies than individual protein levels.
- Further investigation using the VEGF activity index is warranted to elucidate VEGF's precise role in these conditions.
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