Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-10-21
pubmed:abstractText
We report a series of experiments designed to determine if agents and conditions that have been reported to alter sodium reabsorption, Na-K-ATPase activity or cellular structure in the rat distal nephron might also regulate the density or affinity of binding of 3H-metolazone to the putative thiazide receptor in the distal nephron. Experimental conditions selected for study were acute (60-min) and chronic hydrochlorothiazide (HCTZ), acute acetazolamide, acute and chronic furosemide, and 14 days of varied intake of dietary sodium. The density of the binding of 3H-metolazone was increased 47% by acute HCTZ (P less than 0.001) and 39% (P less than 0.001) by acute furosemide. In contrast, acute acetazolamide produced no change in binding despite eliciting a dramatic diuresis. Chronic HCTZ (5 days) and chronic furosemide (7 days) increased binding of 3H-metolazone by 46% (P less than 0.001) and by 101% (P less than 0.001), respectively. Variation of dietary sodium intake over a range that allowed normal growth of the animal and that produced urinary excretion of Na varying from 0.28 to 2.62 mEq/100 g/day failed to alter the density of binding of 3H-metolazone. These studies are the first indication that the density of the thiazide receptor is regulated by a variety of both acute and chronic conditions that have previously been associated with changes in transport, ultrastructure or Na-K-ATPase activity in the distal nephron.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Acetazolamide, http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Diuretics, http://linkedlifedata.com/resource/pubmed/chemical/Furosemide, http://linkedlifedata.com/resource/pubmed/chemical/Hydrochlorothiazide, http://linkedlifedata.com/resource/pubmed/chemical/Metolazone, http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Drug, http://linkedlifedata.com/resource/pubmed/chemical/Slc12a3 protein, rat, http://linkedlifedata.com/resource/pubmed/chemical/Sodium, Dietary, http://linkedlifedata.com/resource/pubmed/chemical/Sodium Chloride Symporters, http://linkedlifedata.com/resource/pubmed/chemical/Sodium-Potassium-Exchanging ATPase, http://linkedlifedata.com/resource/pubmed/chemical/Symporters, http://linkedlifedata.com/resource/pubmed/chemical/thiazide receptor
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1046-6673
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
91-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Effects of diuretic treatment and of dietary sodium on renal binding of 3H-metolazone.
pubmed:affiliation
Department of Medicine, University of California, San Diego, La Jolla 92093-0623.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't