Chronic estrogen treatment modifies insulin-induced insulin resistance and hypertension in ovariectomized rats

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Abstract

Background: Gender differences have been found in the development of hypertension. The role of estrogen in the association between hyperinsulinemia/insulin resistance and hypertension was investigated in an insulin-induced, insulin-resistant, and hypertensive model. Methods: Ovariectomized or sham operated female Wistar rats were chronically treated with insulin and/or estrogen via subcutaneous implants (insulin, 2 U/day; 17β-estradiol 0.5 mg/pellet, 60-day release). Systolic blood pressure was monitored at weeks 0, 3, and 6. At week 7, an oral glucose tolerance test was performed. Results: Ovariectomy resulted in the development of insulin resistance and blood pressure elevation in chronically insulin-treated female rats. Chronic estrogen treatment prevented the elevation in blood pressure and the development of insulin resistance. Conclusion: The results indicate that chronic estrogen treatment modifies the insulin-induced hypertension by increasing insulin sensitivity in ovariectomized rats. © 2005 American Journal of Hypertension, Ltd.

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APA

Song, D., Arikawa, E., Galipeau, D. M., Yeh, J. N., Battell, M. L., Yuen, V. G., & McNeill, J. H. (2005). Chronic estrogen treatment modifies insulin-induced insulin resistance and hypertension in ovariectomized rats. American Journal of Hypertension, 18(9), 1189–1194. https://doi.org/10.1016/j.amjhyper.2005.04.003

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