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  • Title: Water immersion-induced alterations of plasma atrial natriuretic peptide level and its relationship to the renin-angiotensin-aldosterone system and vasopressin secretion in acute and chronic renal failure.
    Author: Kokot F, Grzeszczak W, Zukowska-Szczechowska E, Wiecek A.
    Journal: Clin Nephrol; 1989 May; 31(5):247-52. PubMed ID: 2525441.
    Abstract:
    Water immersion (WI)-induced alterations of circulating plasma volume (PV), plasma renin activity (PRA), plasma levels of aldosterone (Ald), vasopressin (AVP) and atrial natriuretic peptide (ANP) were examined in 12 patients with noninflammatory acute renal failure (ARF) at the anuric/oliguric phase, in 20 hemodialyzed patients with chronic renal failure and in 15 healthy subjects. Patients with acute and chronic renal failure showed significantly elevated basal ANP concentrations (138.67 +/- 12.88 and 295.8 +/- 21.87 pg/ml, respectively) as compared with normals (74.54 +/- 4.1 pg/ml) and significantly elevated PRA (20.85 +/- 3.24 and 6.60 +/- 0.94 ng/ml/h, respectively versus 2.33 +/- 0.31 ng/ml/h), plasma levels of Ald (16.11 +/- 1.26 and 18.11 +/- 1.58 ng/dl, respectively versus 12.71 +/- 1.03 ng/dl) and AVP (6.95 +/- 0.62 and 6.08 +/- 0.54 pg/ml, respectively versus 2.68 +/- 0.48 pg/ml). After 2 hrs of WI a significant decline of PRA, Ald and AVP but an increase of ANP was noted in all examined groups. The absolute WI-induced increase in plasma ANP was significantly less marked in uremic patients than in normals. The endocrine profile of patients with ARF differed only quantitatively from that of patients with CRF both under basal and WI conditions. WI was followed by a significant increase of PV which was significantly more marked in patients with ARF (+ 16.42 +/- 1.73%) than in CRF (10.57 +/- 0.37%) and in normals (+11.3 +/- 1.6%). Only in healthy subjects a significant correlation was found between WI-induced changes of PV and ANP, PRA and Ald, and between PRA and AVP.(ABSTRACT TRUNCATED AT 250 WORDS)
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