Excretion of Sodium and Water by the Denervated Canine Kidney

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Abstract
To investigate any direct influences of renal innervation on tubular handling of Na, urine was collected from the individual ureters of otherwise normal dogs with chronic unilateral sympathetic denervation (T9-L3) and explanted urinary bladder trigones. Collections from resting unanesthetized animals obtained during hydropenia, water diuresis and hypertonic NaCl diuresis failed to reveal any consistent differences between innervated and denervated kidneys with respect to their excretion of inulin, Na and water. Adequate explanation for the differences between these findings and those of others reporting consistently greater Na excretion from the denervated kidney is not apparent.

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