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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Improved renal function and inhibition of renin and aldosterone secretion following peritoneovenous (LeVeen) shunt.

Twelve patients with cirrhosis, refractory ascites, and varying degrees of renal failure (creatinine clearance, 5 to 44 ml/min) were studied before and up to 2 weeks following peritoneovenous shunt. Creatinine clearance increased 60% or more in seven patients (group I) and 22% or less in five patients (group II). There were no significant differences in maximum urine output or sodium excretion between groups (group I, 4,272 ml/14 hr, 372 mEq/24 hr; group II, 3,722 ml/24 hr, 255 mEq/24 hr). Aldosterone and renin concentrations were higher in group I and showed a greater decrease after shunting. Renin substrate levels also were higher in group I and rose following shunt insertion, while group II remained low. Ascitic fluid was found to contain renin substrate in concentrations of approximately 25% to 50% of plasma concentrations. Patients with the greatest increase in creatinine clearance showed the largest rise in substrate concentration and fall in renin and aldosterone secretion, suggesting a dynamic relationship between these factors. That a diuresis could occur without significant change in these parameters in five of 12 patients suggests independent control mechanisms for renal salt and water excretion and glomerular filtration in the ascitic patient.[1]


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