Document Detail


Renal tubular reabsorption of chloride in Bartter's syndrome and other conditions with hypokalemia.
MedLine Citation:
PMID:  3802593     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fractional distal chloride reabsorption was measured in 8 patients with Bartter's syndrome, 8 patients with comparable degrees of hypokalemia of different etiologies and 7 normal subjects during maximal diuresis induced by an intravenous infusion of 5% dextrose in water. A low fractional distal chloride reabsorption (0.55 +/- 0.01) was found only in patients with Bartter's syndrome, whose serum potassium concentrations ranged between 1.2 and 3.1 mEq/l. Non-Bartter's syndrome hypokalemic patients had serum potassium concentrations between 2.4 and 3.2 mEq/l (p NS when compared to patients with Bartter's syndrome) but their fractional distal chloride reabsorption was 0.88 +/- 0.33, significantly higher (p less than 0.001) than that of patients with Bartter's syndrome. Normokalemic control subjects had a fractional distal chloride reabsorption of 0.86 +/- 0.01, higher than patients with Bartter's syndrome (p less than 0.001) but not significantly different from patients with hypokalemia. These results suggest that there is no effect of serum potassium concentration on fractional distal reabsorption of chloride in man. Hypokalemia of a moderate to severe degree is not accompanied by obligatory renal chloride loss except in Bartter's syndrome. Chloruresis is a specific feature of Bartter's syndrome rather than an effect of hypokalemia.
Authors:
J A Rodriguez Portales; C S Delea
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Clinical nephrology     Volume:  26     ISSN:  0301-0430     ISO Abbreviation:  Clin. Nephrol.     Publication Date:  1986 Dec 
Date Detail:
Created Date:  1987-03-24     Completed Date:  1987-03-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0364441     Medline TA:  Clin Nephrol     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  269-72     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Absorption
Adolescent
Adult
Bartter Syndrome / metabolism*
Child
Child, Preschool
Chlorides / metabolism*
Female
Glomerular Filtration Rate
Humans
Hyperaldosteronism / metabolism*
Hypokalemia / etiology,  metabolism*
Infant
Kidney Tubules / metabolism*
Loop of Henle / metabolism*
Male
Middle Aged
Potassium / blood
Grant Support
ID/Acronym/Agency:
RR 01346/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Chlorides; 7440-09-7/Potassium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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