Linked Life Data

7917298

Source:http://linkedlifedata.com/resource/pubmed/id/7917298

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1994-11-1
pubmed:abstractText
Neurotoxin-induced activation of voltage-dependent Na+ channels provoked rapid (t1/2 = 15-20 min) channel down-regulation in cultured rat brain neurons, resulting in a 50%-70% decrease in [3H]saxitoxin and 125I-alpha-scorpion toxin binding capacities as well as a decrease in Na+ peak current. Experiments using 125I-alpha-scorpion toxin as both a Na+ channel activator and a surface channel probe showed that a fraction of the bound toxin was internalized, since it was not releasable by acidic washing. Internalization was inhibited by tetrodotoxin, abolished in Na(+)-free medium, and induced by amphotericin B, a Na+ ionophore. Moreover, down-regulation occurred only in immature neuronal tissue, either cultured fetal neurons or postnatal hippocampal slices, but was absent in adult brain. These observations indicate that Na+ channel internalization is triggered by Na+ influx into neurons and may be involved in the control of electrical activity during development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0896-6273
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
683-90
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Sodium channel internalization in developing neurons.
pubmed:affiliation
INSERM U 374, Institut Jean Roche, Faculté de Médecine-Secteur Nord, Marseille, France.
pubmed:publicationType
Journal Article