Neurally mediated renal vasoconstriction during isometric muscle contraction in cats

8 chloralose-anesthetized cats

1-min isometric contraction of the hindlimb triceps surae muscle evoked by stimulating the peripheral ends of the cut L7 and S1 ventral roots, and passive mechanical stretch

Baseline state, renal denervation, cutting L4-S1 dorsal roots, or muscle paralysis

Renal sympathetic nerve activity (RSNA), mean arterial pressure (MAP), mean renal blood flow velocity (MRBV), and calculated renal vascular resistancesurrogate