Linked Life Data

17512560

Source:http://linkedlifedata.com/resource/pubmed/id/17512560

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2007-6-5
pubmed:abstractText
Mice deficient in the microtubule stabilizing protein STOP (stable tubule only polypeptide) show synaptic plasticity anomalies in hippocampus, dopamine hyper-reactivity in the limbic system and severe behavioral deficits. Some of these disturbances are alleviated by long-term antipsychotic treatment. Therefore, this mouse line represents a pertinent model for some aspects of schizophrenia symptomatology. Numerous data support dysfunction of nicotinic neurotransmission in schizophrenia and epidemiological studies show increased tobacco use in schizophrenic patients, in whom nicotine has been reported to improve cognitive deficits and impairment in sensory gating. In this study, we examined potential alterations in cholinergic (ACh) and nicotinic components and functions in STOP mutant mice. STOP KO mice displayed no variation of the density of ACh esterase and beta2* nicotinic receptors (nAChRs), large reductions in the density of vesicular ACh transporter and alpha6* nAChRs and marked increases in the density of alpha7 nAChRs, in some brain areas. STOP KO mice were hypersensitive to the stimulating locomotor effect of nicotine and, interestingly, their impaired performance in learning the cued version of the water maze were improved by administration of the preferential alpha7 nAChR agonist choline. Altogether, our data show that the deletion of the ubiquitous STOP protein elicited restricted alterations in ACh components. They also suggest that nicotinic neurotransmission can be deficient in STOP KO mice and that mutant mice can represent a meaningful model to study some nicotinic dysfunctions and therapeutic treatments.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0028-3908
pubmed:author
pubmed:issnType
Print
pubmed:volume
52
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1691-700
pubmed:dateRevised
2011-9-22
pubmed:meshHeading
pubmed-meshheading:17512560-Acetylcholinesterase, pubmed-meshheading:17512560-Analysis of Variance, pubmed-meshheading:17512560-Animals, pubmed-meshheading:17512560-Autoradiography, pubmed-meshheading:17512560-Behavior, Animal, pubmed-meshheading:17512560-Choline, pubmed-meshheading:17512560-Dose-Response Relationship, Drug, pubmed-meshheading:17512560-Gene Expression Regulation, pubmed-meshheading:17512560-Learning Disorders, pubmed-meshheading:17512560-Maze Learning, pubmed-meshheading:17512560-Mice, pubmed-meshheading:17512560-Mice, Knockout, pubmed-meshheading:17512560-Microtubule-Associated Proteins, pubmed-meshheading:17512560-Motor Activity, pubmed-meshheading:17512560-Nootropic Agents, pubmed-meshheading:17512560-Reaction Time, pubmed-meshheading:17512560-Receptors, Nicotinic, pubmed-meshheading:17512560-Vesicular Acetylcholine Transport Proteins
pubmed:year
2007
pubmed:articleTitle
Sustained increase of alpha7 nicotinic receptors and choline-induced improvement of learning deficit in STOP knock-out mice.
pubmed:affiliation
Inserm, U513, Laboratoire de Neurobiologie et Psychiatrie, Créteil, F-94000 France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural