Human follicle fluid vascular endothelial growth factor concentrations are correlated with luteinization in spontaneously developing follicles

James N. Anasti, Sophia Kalantaridou, Lorene M. Kimzey, Mark George, Lawrence M. Nelson
In: Human Reproduction · 1998 · vol. 13(5) , pp. 1144–1147 · doi:10.1093/humrep/13.5.1144 · PMID:9647535 · W2002134971
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Follicle fluid vascular endothelial growth factor (VEGF) concentrations were positively correlated with progesterone and luteinizing hormone (LH) levels, indicating a relationship between VEGF production and early follicle luteinization in women.

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Abstract

Vascular endothelial growth factor (VEGF) is a cytokine that induces angiogenesis. Angiogenesis is a prominent histologic component of the luteinization process. Luteinization is also characterized by granulosa cell progesterone secretion in response to the luteinizing hormone (LH) surge. Local VEGF production in human pre-ovulatory follicles, induced by LH, was postulated to be a luteinization mediator in women. To investigate this hypothesis, serum and fluid from the dominant follicle of 31 healthy regularly cycling multiparous women undergoing laparoscopic sterilization were obtained. VEGF was measured by enzyme-linked immunosorbent assay, and LH and progesterone were measured by radioimmunoassay. Follicle aspiration was performed at a median of 13 days from the last menstrual period (range 11-17 days). The median pre-ovulatory follicle diameter was 16 mm (range 11-23 mm). Follicle fluid VEGF concentrations (mean 6900 pg/ml, range 1200-17 100 pg/ml) were correlated positively with follicle fluid progesterone concentrations (mean 10 176 nmol/l, range 636-66780 nmol/l, r=0.62, P=0.002). This correlation was even tighter (r=0.87, P < 0.0001) when only samples from the 22 women in the earliest stages of follicle luteinization were considered. In these women serum LH concentrations were also correlated with follicle fluid VEGF concentrations (r=0.51, P=0.02). Our findings demonstrate the close dynamic relationship between VEGF production and early luteinization in human follicles during normal non-stimulated cycles.

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