The AS/AGU rat: a spontaneous model of disruption and degeneration in the nigrostriatal dopaminergic system
Identifieur interne : 000013 ( Ncbi/Merge ); précédent : 000012; suivant : 000014The AS/AGU rat: a spontaneous model of disruption and degeneration in the nigrostriatal dopaminergic system
Auteurs : A Payne [Royaume-Uni] ; J Campbell [Royaume-Uni] ; D Russell [Royaume-Uni] ; G Favor [Royaume-Uni] ; R Sutcliffe [Royaume-Uni] ; N Bennett [Royaume-Uni] ; R Davies [Royaume-Uni] ; T Stone [Royaume-Uni]Source :
- Journal of Anatomy [ 0021-8782 ] ; 2000.
Abstract
The AS/AGU rat provides an alternative to experimentally produced laboratory models of basal ganglia disorders. This mutant is characterised by disturbances of movement including clumsy gait, whole body tremor, rigidity and difficulty in initiating movement. From an early age, there is a profound depletion of extracellular dopamine in the dorsal caudate-putamen as measured via in vivo microdialysis; levels are only 10–20% of those found in the parent Albino Swiss (AS) strain. Subsequently a depletion of whole tissue dopamine levels occurs and, later still, loss of dopaminergic cells in the substantia nigra pars compacta. The dysfunction in movement and the nigrostriatal dopaminergic system are clearly linked, since movement can be ameliorated by
Url:
DOI: 10.1046/j.1469-7580.2000.19640629.x
PubMed: 10923993
PubMed Central: 1468103
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<front><div type="abstract" xml:lang="en"><p>The AS/AGU rat provides an alternative to experimentally produced laboratory models of basal ganglia disorders. This mutant is characterised by disturbances of movement including clumsy gait, whole body tremor, rigidity and difficulty in initiating movement. From an early age, there is a profound depletion of extracellular dopamine in the dorsal caudate-putamen as measured via in vivo microdialysis; levels are only 10–20% of those found in the parent Albino Swiss (AS) strain. Subsequently a depletion of whole tissue dopamine levels occurs and, later still, loss of dopaminergic cells in the substantia nigra pars compacta. The dysfunction in movement and the nigrostriatal dopaminergic system are clearly linked, since movement can be ameliorated by
<sc>L</sc>
-DOPA administration. Furthermore, there are depletions in glucose utilisation in several regions of the basal ganglia circuitry, including the substantia nigra pars compacta, the subthalamic nucleus and the ventrolateral thalamus. The AS/AGU rat represents a unique opportunity to investigate the intrinsic factors controlling the integrity of dopaminergic systems and the recent successful positional cloning of the agu gene will allow the molecular mechanisms underlying this interesting phenotype to be analysed.
</p>
</div>
</front>
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<pmc article-type="review-article" xml:lang="en"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Anat</journal-id>
<journal-title>Journal of Anatomy</journal-title>
<issn pub-type="ppub">0021-8782</issn>
<issn pub-type="epub">1469-7580</issn>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">10923993</article-id>
<article-id pub-id-type="pmc">1468103</article-id>
<article-id pub-id-type="other">joa1964_0629</article-id>
<article-id pub-id-type="doi">10.1046/j.1469-7580.2000.19640629.x</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>The AS/AGU rat: a spontaneous model of disruption and degeneration in the nigrostriatal dopaminergic system</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>PAYNE</surname>
<given-names>A. P.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
<xref rid="c1" ref-type="corresp"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>CAMPBELL</surname>
<given-names>J. M.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
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<contrib contrib-type="author"><name><surname>RUSSELL</surname>
<given-names>D.
</given-names>
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<contrib contrib-type="author"><name><surname>FAVOR</surname>
<given-names>G.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>SUTCLIFFE</surname>
<given-names>R. G.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>BENNETT</surname>
<given-names>N. K.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>DAVIES</surname>
<given-names>R. W.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>STONE</surname>
<given-names>T. W.
</given-names>
</name>
<xref rid="a1" ref-type="aff"></xref>
</contrib>
<aff id="a1">Institute of Biomedical and Life Sciences, Glasgow University, Glasgow, UK</aff>
</contrib-group>
<author-notes><corresp id="c1"><bold>Correspondence to</bold>
Professor A. P. Payne, Laboratory of Human Anatomy, Glasgow University, Glasgow G12 8QQ. E-mail:
<email>A.Payne@bio.gla.ac.uk</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><month>05</month>
<year>2000</year>
</pub-date>
<volume>196</volume>
<issue>Pt 4</issue>
<fpage>629</fpage>
<lpage>633</lpage>
<copyright-statement>© 2000 Anatomical Society of Great Britain and Ireland</copyright-statement>
<abstract><p>The AS/AGU rat provides an alternative to experimentally produced laboratory models of basal ganglia disorders. This mutant is characterised by disturbances of movement including clumsy gait, whole body tremor, rigidity and difficulty in initiating movement. From an early age, there is a profound depletion of extracellular dopamine in the dorsal caudate-putamen as measured via in vivo microdialysis; levels are only 10–20% of those found in the parent Albino Swiss (AS) strain. Subsequently a depletion of whole tissue dopamine levels occurs and, later still, loss of dopaminergic cells in the substantia nigra pars compacta. The dysfunction in movement and the nigrostriatal dopaminergic system are clearly linked, since movement can be ameliorated by
<sc>L</sc>
-DOPA administration. Furthermore, there are depletions in glucose utilisation in several regions of the basal ganglia circuitry, including the substantia nigra pars compacta, the subthalamic nucleus and the ventrolateral thalamus. The AS/AGU rat represents a unique opportunity to investigate the intrinsic factors controlling the integrity of dopaminergic systems and the recent successful positional cloning of the agu gene will allow the molecular mechanisms underlying this interesting phenotype to be analysed.
</p>
</abstract>
<kwd-group><kwd>AS/AGU rat</kwd>
<kwd>nigrostriatal dopaminergic system</kwd>
</kwd-group>
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