Hormonal regulation of water metabolism in children with nephrotic syndrome

W. Rascher, T. Tulassay

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The roles of the antidiuretic hormone arginine-vasopressin (AVP), atrial natriuretic peptide (ANP), renin, aldosterone and catecholamines in the pathogenesis of impaired water excretion were studied in edematous children with nephrotic syndrome. Compared to non-proteinuric children with nephrotic syndrome in remission, edematous children during relapse had lower serum concentrations of sodium and chloride with lower plasma osmolality, but had higher hematocrit values (P <0.05, each). Plasma concentration of AVP was higher in edematous children (P <0.01). Compared to healthy, normal children, edematous nephrotic children had higher plasma concentrations of AVP, aldosterone, renin, noradrenaline, and adrenaline (P <0.01, each), but had similar levels of plasma ANP. Head out water immersion and infusion of 5 ml/kg 20% human serum albumin solution, both procedures known to increase central blood volume, resulted in a reduction of elevated hormone concentrations to near-normal levels and caused a rise in sodium and water excretion. Following albumin infusion, mean ANP rose fivefold, and plasma concentrations of this hormone correlated positively with urine flow (r = 0.64, N = 18, P <0.01) and with sodium excretion (r = 0.62, N = 18, P <0.01). It is concluded that AVP, renin, aldosterone and catecholamines are stimulated in edematous children with nephrotic syndrome by reduction in effective circulatory blood volume. Central blood volume expansion induced either by water immersion or by infusion of concentrated albumin solution is able to correct elevated hormone levels and to induce salt and water excretion. Plasma ANP appears to trigger the diuretic and natriuretic effects of central volume expansion.

Original languageEnglish
JournalKidney International
Volume32
Issue numberSUPPL. 21
Publication statusPublished - 1987

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Nephrotic Syndrome
Arginine Vasopressin
Atrial Natriuretic Factor
Water
Blood Volume
Aldosterone
Renin
Immersion
Hormones
Catecholamines
Albumins
Sodium
Natriuretic Agents
Vasopressins
Hematocrit
Diuretics
Sodium Chloride
Serum Albumin
Osmolar Concentration
Epinephrine

ASJC Scopus subject areas

  • Nephrology

Cite this

Hormonal regulation of water metabolism in children with nephrotic syndrome. / Rascher, W.; Tulassay, T.

In: Kidney International, Vol. 32, No. SUPPL. 21, 1987.

Research output: Contribution to journalArticle

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