Linked Life Data

20953553

Source:http://linkedlifedata.com/resource/pubmed/id/20953553

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2010-10-18
pubmed:abstractText
Rolling mouse Nagoya is an ataxic mutant mouse that carries a mutation in a gene encoding for the alpha 1A subunit of the voltage-gated P/Q-type Ca2+ channel (Cav2.1). This report summarizes our studies and others concerning cerebellar abnormalities in rolling mice based on chemical neuroanatomy. While there are no obvious cerebellar deformations in this mutant mouse, the altered functions of Purkinje cells can be revealed as a reduced expression of type 1 ryanodine receptor (RyR1) in all Purkinje cells uniformly throughout the cerebellum, and as an ectopic expression of tyrosine hydroxylase (TH) in the Purkinje cell subsets with the zebrin II-immunopositive phenotype. As the mutated Cav2.1 channel is expressed at uniform levels in all Purkinje cells, its copresence with RyR1 staining suggests that a Cav2.1 channel dysfunction links with the expression of RyR1 in Purkinje cells of rolling mice. However, an ectopic expression of TH in the Purkinje cells is topologically related to the projection of corticotrophin-releasing factor-immunopositive climbing fibers rather than expression of the mutated Cav2.1 channel. On the other hand, increased levels of serotonin (5-HT) in 5-HTergic fibers were revealed immunohistochemically in Purkinje cells of the vermis of rolling cerebellum. Thus, to determine whether or not cerebellar abnormalities are related to Purkinje cell populations revealed by zebrin II expression is essential for enhancing our understanding of the pathogenesis of hereditary cerebellar ataxic mutants such as rolling mice.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1537-744X
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2032-8
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Zebrin II expressing Purkinje cell phenotype-related and -unrelated cerebellar abnormalities in Cav2.1 mutant, rolling mouse Nagoya.
pubmed:affiliation
Laboratory of Anatomy, Department of Physical Therapy, Faculty of Medical and Health Sciences, Tsukuba International University, Tsuchiura, Ibaraki, Japan.
pubmed:publicationType
Journal Article, Review