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Hypertension. 1990 Feb;15(2 Suppl):I117-20.

Effect of gender in centrally induced angiotensin II hypertension in dogs.

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Department of Anesthesiology, University of Texas Medical School, Houston.


This study was designed to investigate the relation between gender, an endogenous inhibitor of the Na+-K+ pump, and volume-dependent hypertension induced by stimulation of the brain renin-angiotensin system and increased salt intake. Angiotensin II (20 ng/min i.c.v.) was infused for 4 weeks in five dogs of each sex with saline as the drinking fluid. In male dogs, angiotensin II induced parallel pressor (30%) and dipsogenic responses (70%), whereas no hypertension and no increase in fluid intake were observed in females. In contrast, the activity of the Na+-K+ pump as assessed by 86Rb uptake was independent of gender. Our data provide novel evidence that gender plays a determining role in the physiological properties of centrally administered angiotensin II.

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