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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1987-7-31
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pubmed:abstractText |
Results of experiments performed on rat isolated retina indicate that platelet-activating factor (PAF) is able to inhibit the functional response of the retina electroretinogram (ERG) recorded in response to a brief light flash. In the presence of PAF, the ERG b-wave amplitude decreases according to a dose-dependent (2.10(-11) M; 2.10(-9) M; 2.10(-7) M) process. This effect is partially inhibited by the simultaneous administration of a Ginkgo biloba extract (GBE, 10 mg/l) or Ginkgolide B (BN 52021, 2.10(-5)M). The authors interpret these results with reference to the main mechanism of the membrane signal triggered by PAF, namely the activation of phosphatidylinositol cycle with the formation of inositol-triphosphate, the inhibition of the light-induced response of the retina by administration of inositol-triphosphate, and the antagonistic effect of GBE and BN 52021 on specific PAF-receptors demonstrated on other models. Thus specific PAF-receptors may exist at the level of the retina, which suggests that they are also present in the brain.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Diterpenes,
http://linkedlifedata.com/resource/pubmed/chemical/Ginkgolides,
http://linkedlifedata.com/resource/pubmed/chemical/Lactones,
http://linkedlifedata.com/resource/pubmed/chemical/Plant Extracts,
http://linkedlifedata.com/resource/pubmed/chemical/Platelet Activating Factor,
http://linkedlifedata.com/resource/pubmed/chemical/ginkgolide B
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pubmed:status |
MEDLINE
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pubmed:issn |
0250-0868
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
9
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
33-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3596955-Animals,
pubmed-meshheading:3596955-Calcium,
pubmed-meshheading:3596955-Diterpenes,
pubmed-meshheading:3596955-Dose-Response Relationship, Drug,
pubmed-meshheading:3596955-Electroretinography,
pubmed-meshheading:3596955-Ginkgolides,
pubmed-meshheading:3596955-Lactones,
pubmed-meshheading:3596955-Plant Extracts,
pubmed-meshheading:3596955-Platelet Activating Factor,
pubmed-meshheading:3596955-Rats,
pubmed-meshheading:3596955-Retina
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pubmed:year |
1987
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pubmed:articleTitle |
Effects of PAF-acether on electrophysiological response of isolated retina.
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pubmed:publicationType |
Journal Article,
In Vitro
|