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Atrial natriuretic factor in mild to moderate chronic renal failure #MMPMID2966770
Suda S; Weidmann P; Saxenhofer H; Cottier C; Shaw SG; Ferrier C
Hypertension 1988[May]; 11 (5): 483-90 PMID2966770show ga
The relationship between kidney function and plasma immunoreactive atrial natriuretic factor (irANF) levels as well as the effects of synthetic human ANF-(99-126) were investigated in 13 patients with mild to moderate chronic renal failure. Under basal conditions, glomerular filtration rate averaged 39 +/- 5 (SEM) ml/min/1.73 m2 and blood pressure (BP) averaged 166/107 +/- 7/2 mm Hg; 12 patients were hypertensive. Plasma irANF levels were significantly increased (98 +/- 16 vs 42 +/- 4 pg/ml in healthy control subjects; p less than 0.001) and correlated (p less than 0.05-0.005) inversely with hematocrit (r = -0.65) and positively with systolic BP (r = 0.75) or fractional sodium excretion (r = 0.75). Human ANF-(99-126) infusion for 45 minutes at 0.034 microgram/kg/min augmented (p less than 0.05-0.01) diuresis and urinary sodium, chloride, calcium, phosphate, and magnesium excretion. During the subsequent 45 minutes of human ANF-(99-126) infusion at a rate of 0.077 microgram/kg/min, diuresis and electrolyte excretion remained elevated (p less than 0.05-0.01). Glomerular filtration rate and effective renal plasma flow were not significantly modified, but filtration fraction rose progressively (p less than 0.01). Human ANF-(99-126) infusion decreased BP (p less than 0.05-0.01), produced hemoconcentration (hematocrit + 7%; p less than 0.01) without negative body fluid balance, and increased (p less than 0.01-0.001) plasma norepinephrine, insulin, and serum free fatty acids; plasma aldosterone and renin activity were unaltered during but rose after cessation of human ANF-(99-126) infusion.(ABSTRACT TRUNCATED AT 250 WORDS)
Hypertension 1988 ; 11 (5): 483-90
