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Effects of estrogen on vein grafts
1Georgetown University Medical Center, Washington, DC.
Abstract:
The effect of estrogen on veins was evaluated in vitro and in vivo in three species. 17 beta-estradiol did not significantly alter 3H-thymidine uptake in vitro in segments from either canine femoral or human saphenous veins. In vivo in a rabbit carotid vein graft model, 17 beta-estradiol administration did not affect the development of intimal hyperplasia but was associated with a higher rate of graft thrombosis. These data suggest that the effects of estrogen on veins differs from the effects reported in arteries. These differences were seen both in vitro in veins taken from their normal location and in vivo in veins placed in the arterial circulation.
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