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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1979-3-13
pubmed:abstractText
Specific binding of 14C-amiloride to the mucosal surface of frog skin epithelium (Rana temporaria) has been used as a measure of the number of sodium entry sites. All binding measurements were made with the mucosal surface bathed in a solution containing 1.1 mM sodium. When manipulations were used which increased the intracellular concentration of sodium the amount of amiloride bound was reduced. The manipulations included flushing the mucosal surface with solutions containing 111 mM sodium after serosal efflux was inhibited with ouabain or potassium removal. Similar results were obtained when cells were loaded with lithium. These effects on amiloride binding did not appear to depend on changes in membrane potential or upon changes in affinity of amiloride for its binding site. It appears that inhibition of serosal sodium efflux from the epithelium causes a reduction of mucosal sodium influx by making entry sites unavailable. This latter may be a result, directly or indirectly, of the sodium concentration in the sodium transport pool.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0022-2631
pubmed:author
pubmed:issnType
Print
pubmed:volume
40 Spec No
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
221-45
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Interdependence of the two borders in a sodium transporting epithelium. Possible regulation by the transport pool.
pubmed:publicationType
Journal Article, In Vitro