Linked Life Data

44727

Source:http://linkedlifedata.com/resource/pubmed/id/44727

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1980-8-15
pubmed:abstractText
1. Bath-application of L-glutamate to crayfish opener muscle causes depolarization and resistance changes which both increase with falling temperature. At temperatures above 15 degrees C there is usually a resistance increase, at lower temperatures the resistance is decreased. 2. Meso-gamma . gamma'-diaminosuberic acid-dihydrochloride (meso-di-GABA) and dl-diamino-nonanedicarboxylic acid dihydrochloride (C-9) were newly synthesized as potential glutamate blockers. 3. Meso-di-GABA (10(-4) to 10(-3)M) usually caused a significant increase (15 degrees C) or decrease (7 degrees C) of membrane resistance and slight depolarization. Excitatory junction potentials (ejps) were reversibly depressed or blocked while the effects of glutamate were potentiated. The depression or block of neuromuscular transmission was not prevented by picrotoxin or by concanavaline A. 4. C-9 (3 x 10(-4) M) depressed or blocked the effect of applied glutamate with little or no effect on ejps. 5. The results are best explained by assuming that bath-applied glutamate acts mainly on extrasynaptic receptors. Meso-di-GABA is assumed to block synaptic receptors and to activate non-synaptic receptors while C-9 seems to act mainly as a blocker of glutamate action on non-synaptic receptors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0021-7948
pubmed:author
pubmed:issnType
Print
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
629-34
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Is glutamate the transmitter of crustacean motoneurons?
pubmed:publicationType
Journal Article, In Vitro