Key result
Partial aortic clamping increased plasma renin activity in proportion to the reduction in renal perfusion pressure, suggesting a hemodynamic control mechanism for renin secretion.
Why the study?
Does altering renal perfusion pressure via aortic clamping affect plasma renin activity in anesthetized dogs?
Population
13 pentobarbital-anesthetized dogs
Comparison
Acute saline loading followed by partial aortic… vs Baseline (control level)
Design
Preclinical
Authors
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Hypothesis-generating in dogs; leaves open hemodynamic renin control in human disease.
Does altering renal perfusion pressure via aortic clamping affect plasma renin activity in anesthetized dogs?
Renin secretion is controlled by a mechanism sensitive to hemodynamic parameters like renal perfusion pressure, independent of sodium filtration and excretion.
Churchill et al. (2008) studied this question. Partial aortic clamping vs. Baseline/control level was evaluated on Arterial plasma renin activity (PRA). Partial aortic clamping increased plasma renin activity in proportion to the reduction in renal perfusion pressure, suggesting a hemodynamic control mechanism for renin secretion.
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