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VEGFs are produced primarily in ovary and cause increased vascular permeability.(vascular endothelial growth factor as mediator for human chorionic gonadotropin in the development of ovarian hyperstimulation syndrome)
2003 JAN 9 - (NewsRx.com & NewsRx.net) -- According to recent research from Spain, "The existence of a vasoactive molecule released in response to hCG [human chorionic gonadotropic] is believed to be the main feature in the development of ovarian hyperstimulation syndrome (OHSS) in women, and vascular endothelial growth factor (VEGF) is the main candidate as the human chorionic gonadotropin (hCG) mediator."
R. Gomez and colleagues studied "the role of VEGF in increasing vascular permeability (VP) in vivo, a characteristic of OHSS." According to their report in the journal Endocrinology, they "analyzed the source and specific isoforms of VEGF involved and developed strategies to reverse increased VP in hyperstimulated rats targeting the VEGF system."
"Ovarian hyperstimulation was induced with pregnant mare's serum gonadotropin, or pregnant mare's serum gonadotropin plus hCG. Time-course experiments analyzed VP and the expression of whole VEGF mRNA in the mesentery and the ovaries," Gomez and associates said (Vascular endothelial growth factor receptor-2 activation induces vascular permeability in hyperstimulated rats, and this effect is prevented by receptor blockade. Endocrinology, 2002;143(11):4339-4348).
They reported that "VP and ovarian mRNA VEGF expression increased to peak values after 48 hours. No significant change in expression was observed in the mesentery.
"To further prove the ovarian origin of VEGF," they said, ...
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Source: HighBeam Research, VEGFs are produced primarily in ovary and cause increased vascular...