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Hum. Reprod. Advance Access originally published online on March 13, 2007
Human Reproduction 2007 22(6):1647-1651; doi:10.1093/humrep/dem042
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© The Author 2007. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Vascular endothelial growth factor production by circulating immune cells is elevated in ovarian hyperstimulation syndrome

Kenzo Kosaka, Hiroshi Fujiwara1, Shinya Yoshioka and Shingo Fujii

Department of Gynecology and Obstetrics, Faculty of Medicine, Kyoto University, Kyoto 606-8507, Japan

1 Correspondence address. Department of Gynecology and Obstetrics, Faculty of Medicine, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan. Tel: +81-75-751-3269; Fax: +81-75-761-3967; E-mail: fuji{at}kuhp.kyoto-u.ac.jp

BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic disease manifesting itself by ovarian enlargement and massive ascites with increased peritoneal capillary permeability. Although vascular endothelial growth factor (VEGF) is considered to play the main role in developing OHSS, its precise mechanism remains unclear. In this study, we examined possible roles of circulating immune cells in the pathogenesis of OHSS.

METHODS: Peripheral blood mononuclear cells (PBMC) and plasma were collected from healthy non-pregnant volunteers and from patients receiving ovulation induction for IVF. PBMC were cultured for 48 h. Plasma and/or medium concentrations of VEGF, estradiol and progesterone were measured using enzyme-linked immunosorbent assay and radioimmunoassay kits.

RESULTS: VEGF production by cultured PBMC and plasma concentrations of VEGF taken from patients with early onset OHSS (n = 12) were significantly higher than those in non-pregnant volunteers and patients without OHSS whose oocyte retrieval rates were similar to that of OHSS patients. OHSS patients were further classified into a high plasma VEGF concentration group and a high culture medium VEGF group. There was no significant correlation among VEGF production by PBMC and plasma concentration of VEGF, estradiol or progesterone.

CONCLUSION: Although mechanistic evidence has not been provided, our study does provide new evidence to suggest that circulating immune cells are involved in the pathogenesis of OHSS via VEGF production.

Key words: HCG/OHSS/PBMC/VEGF

Submitted on June 29, 2006; resubmitted on December 14, 2006; resubmitted on January 10, 2007; accepted on January 16, 2007.


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This article has been cited by other articles:


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 Hum ReprodHome page
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Vascular endothelial growth factor production by circulating immune cells is elevated in ovarian hyperstimulation syndrome
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 Hum ReprodHome page
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Reply: Vascular endothelial growth factor production by circulating immune cells is elevated in ovarian hyperstimulation syndrome
Hum. Reprod., November 1, 2007; 22(11): 3042 - 3043.
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