rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
|
pubmed:dateCreated |
1977-3-21
|
pubmed:abstractText |
Harmaline inhibits both the Na+ -K+ -ATPase activity and the uptake of L-phenylalanine in guinea-pig intestinal mucosa. The latter effect is not a direct consequence of the former, since higher concentrations are needed to inhibit the enzyme than the influx into the mucosa; Furthermore the uptake is still sensitive to harmaline when the Na+ -K+ -ATPase has been fully inhibited by ouabain. Harmaline can inhibit L-phenylalanine influx at a concentration at which it does not affect intracellular ion concentrations. Ouabain, however, inhibits the uptake of L-phenylalanine only after a 30 min preincubation period, when the intracellular sodium concentration reached the extracellular level. Harmaline also interferes with the influx of beta-methyl-D-glucoside in the mucosa of the dog colon. Addition of harmaline at the mucosal face of the tissue suppresses all net transport of sodium and chloride ions and L-phenylalanine across the mucosa. Thus the same mode of action appears to apply in both the guinea-pig ileum and the dog colon.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Dec
|
pubmed:issn |
0028-1298
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
295
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
231-6
|
pubmed:dateRevised |
2010-3-12
|
pubmed:meshHeading |
pubmed-meshheading:138095-Adenosine Triphosphatases,
pubmed-meshheading:138095-Alkaloids,
pubmed-meshheading:138095-Animals,
pubmed-meshheading:138095-Biological Transport, Active,
pubmed-meshheading:138095-Chlorides,
pubmed-meshheading:138095-Colon,
pubmed-meshheading:138095-Dogs,
pubmed-meshheading:138095-Guinea Pigs,
pubmed-meshheading:138095-Harmaline,
pubmed-meshheading:138095-Ileum,
pubmed-meshheading:138095-Intestinal Mucosa,
pubmed-meshheading:138095-Methylglucosides,
pubmed-meshheading:138095-Methylglycosides,
pubmed-meshheading:138095-Ouabain,
pubmed-meshheading:138095-Phenylalanine,
pubmed-meshheading:138095-Potassium,
pubmed-meshheading:138095-Sodium
|
pubmed:year |
1976
|
pubmed:articleTitle |
Differential effects of harmaline and ouabain on intestinal sodium, phenylalanine and beta-methyl-glucoside transport.
|
pubmed:publicationType |
Journal Article,
Comparative Study,
In Vitro
|