Key result
Intrarenal endothelin-1 significantly reduced cortical and juxtamedullary arteriole lumen diameters (P<0.01) and decreased cortical blood flow by 42%, but did not decrease medullary blood flow.
Why the study?
Does intrarenal endothelin-1 infusion alter regional kidney blood flow and renal arteriole calibre in anaesthetized rabbits?
Population
Anaesthetized rabbits (n=12)
Comparison
Intrarenal endothelin-1 infusion vs Vehicle infusion
Design
Preclinical
Authors
Loading...
Supports differential renal blood flow regulation by endothelin-1 in rabbits; hypothesis-generating and should not yet change clinical practice.
Does intrarenal endothelin-1 infusion alter regional kidney blood flow and renal arteriole calibre in anaesthetized rabbits?
p-value: p=< 0.01
Endothelin-1 constricts juxtamedullary arterioles without decreasing medullary blood flow, suggesting these arterioles are not the primary regulators of medullary blood flow.
Denton et al. (2004) studied Healthy (anaesthetized rabbits) (n=12). Intrarenal endothelin-1 (ET-1) vs. Vehicle was evaluated on Cortical and medullary blood flow and arteriole lumen diameters (p=< 0.01). Intrarenal endothelin-1 significantly reduced cortical and juxtamedullary arteriole lumen diameters (P<0.01) and decreased cortical blood flow by 42%, but did not decrease medullary blood flow.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: