Increased capillary permeability induced by human follicular fluid: A hypothesis for an ovarian origin of the hyperstimulation syndrome

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Abstract

Objective: To examine the effect of follicular fluid (FF) and peritoneal fluid (PF) from patients undergoing assisted reproductive technology procedures on endothelial harrier function. This was determined in vitro by measuring the permeability of filter-grown bovine aortic endothelial cell monolayers to a permeability marker. Design: Endothelial cells obtained from bovine thoracic aortas were treated with collagenase solution and plated on millicell filters, on which they formed confluent monolayers. Flux rate was determined at 60 minutes by measuring the radioactive tracer (3H mannitol) permeating from the apical to the basolateral part of the filter. Fifty- eight samples of FF and PF, both from stimulated and natural cycles were analyzed and grouped according to the number of eggs retrieved. Follicular fluid and PF samples from natural cycles were used as controls. Results: There was an augmentation in the permeability rate of both FF and PF from patients undergoing controlled ovarian hyperstimulation (COH) who responded with an increasing number of eggs compared with controls (51% and 39%, respectively). When analyzing samples from patients who responded with a low number of oocytes, no significant increase was observed. Conclusions: It is known that in OHSS, the increase in capillary permeability is related to the administration of gonadotropins, and is believed to be mediated by a vasoactive substance of ovarian origin. In this study, FF and PF from patients undergoing COH showed a significant increase in the permeability rate through endothelial cells in vitro. Based on these findings, it could be hypothesized that if the same events took place in vivo, the isolation of this factor from ovarian source could be of significant importance to elucidate the pathogenesis of OHSS.

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Goldsman, M. P., Pedram, A., Dominguez, C. E., Ciuffardi, I., Levin, E., & Asch, R. H. (1995). Increased capillary permeability induced by human follicular fluid: A hypothesis for an ovarian origin of the hyperstimulation syndrome. Fertility and Sterility, 63(2), 268–272. https://doi.org/10.1016/0020-7292(95)80043-c

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