Key result
Intracerebroventricular angiotensin II injections in rats produce antidiuresis and osmotic excretion via ADH release, while neurogenic mechanisms primarily mediate the blood pressure responses.
Why the study?
Does central administration of Angiotensin II produce antidiuresis and pressor effects via ADH release or neurogenic mechanisms in rats?
Population
Unanesthetized water-loaded and saline-loaded rats
Comparison
Intracerebroventricular angiotensin II injections vs Median eminence lesions or intravenous infusion…
Design
Preclinical
Authors
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Distinguishes central Ang II pathways in rats; hypothesis-generating and leaves open human translation.
Does central administration of Angiotensin II produce antidiuresis and pressor effects via ADH release or neurogenic mechanisms in rats?
Central administration of Angiotensin II in rats causes antidiuresis primarily through ADH release, whereas its pressor effects are largely mediated by neurogenic mechanisms.
Hoffman et al. (2008) studied this question. Intracerebroventricular (IVT) angiotensin II (AII) injections was evaluated on Pressor effects, antidiuresis, renal plasma flow, glomerular filtration rate, natriuretic and kaliuretic responses. Intracerebroventricular angiotensin II injections in rats produce antidiuresis and osmotic excretion via ADH release, while neurogenic mechanisms primarily mediate the blood pressure responses.
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