【摘 要】
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Objective To observe the change of the cardiovascular effect of estrogen replacement therapy in rat after treated with progesterone. Method Thirty female rates
【机 构】
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Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
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Objective To observe the change of the cardiovascular effect of estrogen replacement therapy in rat after treated with progesterone. Method Thirty female rates were randomly divided into three groups: group A: ovarietcomy; group B: ovariectomy with estrogen replacement therapy and group C: ovariectomy with estrogen and progesterone replacement therapy. The estrogen receptors (ER) in the artery of the rat were measured and the serum level of nitric oxide (NO), endothelin 1 (ET 1), prostacyclin (PGF1a) and thromboxane (TXB2) were detected 2 months later. Results (1) There was no apparent difference in ER expression, serum NO and PGF1a level between group C and group B; these index of group B and C were higher than those of group A; (2) there was no significant difference in blood viscosity, the congregate index of red blood cell and platelet adhesiveness rate between group B and C; these index of group B and C were lower than those of group A. Conclusion Estrogen replacement therapy adding progesterone makes no influence on arterial ER expression, hemorheology index and regulation of estrogen to cardiovascular cytokines generation. It suggested that estrogen combined with progesterone replacement therapy could be a safe and effective method to prevent coronary heart disease.
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