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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1986-12-17
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pubmed:abstractText |
The possible physiological significance of low concentrations of Hg2+ in the guinea-pig ileum has been investigated. Responses to nerve stimulation by single electrical shocks, acetylcholine (ACh), and histamine (Hi) and the response to ACh of a depolarized preparation were examined. A stimulant effect of Hg2+, in the concentration range of 10 nM-1 microM, dominated in intestine accommodated in biological saline solution. This excitatory effect was probably mainly due to stimulation of a depolarization-coupled initiation of the contraction. The inhibitory effect of Hg2+, 10 nM-1 microM, observed in depolarized muscle was presumably due to a decreased Ca2+ availability for the contractile process. In the higher concentration range, 1-100 microM, a probably direct action on the contractile elements causing irreversible deterioration of the preparation seems to be present.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
D
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Acetylcholine,
http://linkedlifedata.com/resource/pubmed/chemical/Histamine,
http://linkedlifedata.com/resource/pubmed/chemical/Mercury,
http://linkedlifedata.com/resource/pubmed/chemical/Nitroprusside,
http://linkedlifedata.com/resource/pubmed/chemical/Verapamil
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pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0001-6357
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
44
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
207-13
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3465192-Acetylcholine,
pubmed-meshheading:3465192-Animals,
pubmed-meshheading:3465192-Electric Stimulation,
pubmed-meshheading:3465192-Female,
pubmed-meshheading:3465192-Guinea Pigs,
pubmed-meshheading:3465192-Histamine,
pubmed-meshheading:3465192-Ileum,
pubmed-meshheading:3465192-Male,
pubmed-meshheading:3465192-Mercury,
pubmed-meshheading:3465192-Models, Biological,
pubmed-meshheading:3465192-Muscle, Smooth,
pubmed-meshheading:3465192-Muscle Contraction,
pubmed-meshheading:3465192-Nitroprusside,
pubmed-meshheading:3465192-Verapamil
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pubmed:year |
1986
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pubmed:articleTitle |
Effects of mercuric ions on isolated guinea-pig ileum.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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