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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1990-4-26
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pubmed:abstractText |
The broad spectrum excitatory amino acid antagonist, kynurenic acid was evaluated in a transient forebrain ischaemia model in gerbils. When administered i.p., 15 min prior to a 5 min period of ischaemia, a dose-related neuroprotective effect was seen with 800 mg/kg of kynurenic acid showing very good protection. A combination of kynurenic acid (200 or 400 mg/kg) and MK-801 (0.1 mg/kg) gave a synergistic neuroprotective effect. Neither kynurenic acid (200 or 400 mg/kg) nor MK-801 (0.3 mg/kg) was neuroprotective when administered by itself 30 min post-ischaemically, but when co-administered significant protection of the CA1 pyramidal neurones of the hippocampus was seen. In addition, we examined the effect of maintaining core body temperature on the neuroprotective action of MK-801 and kynurenic acid following the suggestion that it was a hypothermic effect of MK-801 which resulted in neuroprotection in gerbils. When the body temperature of the gerbils was maintained at 37 degrees C for a period of 24 h it did not affect the neuroprotective action of MK-801 (0.1 or 10 mg/kg) or kynurenic acid (200 mg/kg).
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0014-2999
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
6
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pubmed:volume |
176
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
143-9
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:2178948-Animals,
pubmed-meshheading:2178948-Body Temperature,
pubmed-meshheading:2178948-Brain,
pubmed-meshheading:2178948-Carotid Arteries,
pubmed-meshheading:2178948-Dibenzocycloheptenes,
pubmed-meshheading:2178948-Dizocilpine Maleate,
pubmed-meshheading:2178948-Drug Synergism,
pubmed-meshheading:2178948-Gerbillinae,
pubmed-meshheading:2178948-Ischemic Attack, Transient,
pubmed-meshheading:2178948-Kynurenic Acid,
pubmed-meshheading:2178948-Neurons,
pubmed-meshheading:2178948-Pyramidal Tracts
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pubmed:year |
1990
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pubmed:articleTitle |
The neuroprotective actions of kynurenic acid and MK-801 in gerbils are synergistic and not related to hypothermia.
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pubmed:affiliation |
Merck Sharp and Dohme Research Laboratories, Neuroscience Research Centre, Harlow, Essex, U.K.
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pubmed:publicationType |
Journal Article
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