Abstract
Tumor necrosis factor α (TNF-α) and other cytokines have been implicated in the pathogenesis of ovarian hyperstimulation syndrome (OHSS). Pentoxifylline, a methylxanthine derivative, was foundto inhibit TNF-α synthesis. The aim of this study was to evaluate whether the use of petoxifylline would prevent the occurrence of OHSS in a rabbit model. Thirteen rabbits were divided into two groups.The first group (n = 6) were given pentoxifylline 15 mg/kg intravenously and the second group (n = 7) were given physiological serum 15 mg/kg before ovulation induction. Ovarian hyperstimulationwas induced in rabbits by 200 IU equine chorionic gonadotropin on day 1 and 100 IU human chorionic gonadotropin on day 3. Blood samples were analyzed for TNF-α on days 1, 3 and 5. All animals wereautopsied on day 6 to evaluate the ovarian weight, ascites formation and histopathological changes. There was no difference between groups regarding weight gain, ascites formation and plasma TNF-αlevels (p > 0.05). Ovarian weight and number of ovulations were significantly lower in the pentoxifylline group than the control group (p < 0.05). Pentoxifylline did not prevent ascitesformation despite the observed decrease in ovarian weight and number of ovulations in OHSS in a rabbit model.
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