rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
1996-6-13
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pubmed:abstractText |
A potent inhibitor of the Na-K-Cl cotransport system was purified from urines of salt-loaded rats. Mass spectroscopy revealed a molecular mass of 242 Da. Nuclear magnetic resonance showed a spectrum identical to that of 3,4-dihydro-3-(4-hydroxyphenyl)-2H-1-benzopyran-7-ol (an "estrogen-like" isoflavonoid: equol). This compound inhibited cotransport fluxes at similar concentrations (IC50=16-24 microM) as furosemide (IC50 approximately 10 microM). Cotransport inhibitory activity of urines from rats drinking tap water was fully explained by urinary equol concentrations (approximately 27 microM, measured by high-performance liquid chromatography). Slat-loading increased urinary equol excretion, but not sufficiently high to fully explain the very important increase in cotransport inhibitory potency. We conclude that: (i) under basal conditions urinary equol can regulate Na-K-Cl cotransport activity in the kidney and (ii) salt-loading should evoke the appearance of other cotransport inhibitors.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/4',7-dihydroxy-3,4-dihydroisoflavone,
http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Chlorides,
http://linkedlifedata.com/resource/pubmed/chemical/Chromans,
http://linkedlifedata.com/resource/pubmed/chemical/Equol,
http://linkedlifedata.com/resource/pubmed/chemical/Isoflavones,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium,
http://linkedlifedata.com/resource/pubmed/chemical/Sodium,
http://linkedlifedata.com/resource/pubmed/chemical/Sodium-Potassium-Chloride Symporters
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0006-291X
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
16
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pubmed:volume |
221
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
279-85
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pubmed:dateRevised |
2011-11-17
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pubmed:meshHeading |
pubmed-meshheading:8619846-Animals,
pubmed-meshheading:8619846-Carrier Proteins,
pubmed-meshheading:8619846-Chlorides,
pubmed-meshheading:8619846-Chromans,
pubmed-meshheading:8619846-Equol,
pubmed-meshheading:8619846-Isoflavones,
pubmed-meshheading:8619846-Magnetic Resonance Spectroscopy,
pubmed-meshheading:8619846-Mass Spectrometry,
pubmed-meshheading:8619846-Potassium,
pubmed-meshheading:8619846-Rats,
pubmed-meshheading:8619846-Rats, Wistar,
pubmed-meshheading:8619846-Sodium,
pubmed-meshheading:8619846-Sodium-Potassium-Chloride Symporters
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pubmed:year |
1996
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pubmed:articleTitle |
Purification and chemical characterization of a potent inhibitor of the Na-K-Cl cotransport system in rat urine.
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pubmed:affiliation |
Physiology and Pharmacology, School of Medicine, University of Zaragoza, Spain.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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