Linked Life Data

18511192

Source:http://linkedlifedata.com/resource/pubmed/id/18511192

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2008-6-9
pubmed:abstractText
Following brain trauma, chondroitin sulphate proteoglycans (CSPGs) are enriched at injury sites and in denervated areas. At injury sites, CSPGs are regarded as inhibitors of axonal regeneration because of their growth inhibitory properties. In areas of denervation their role is less clear, since they are enriched in zones of sprouting, i.e. zones of axonal growth. To identify CSPGs expressed in a denervated brain area and to quantify changes in their mRNA expression, neurocan, brevican, NG2, phosphacan and aggrecan mRNA were analyzed in the rat fascia dentata following entorhinal denervation. Laser microdissection was combined with quantitative RT-PCR to measure mRNA changes specifically within the denervated portion of the molecular layer (1h, 6h, 10h, 12h, 1d, 2d, 3d, 4d, 7d and 14d post-lesion). Changes in glial fibrillary protein mRNA were measured at the same time points and used as lesion control. This approach revealed a differential regulation of CSPG mRNAs in the denervated zone: neurocan, brevican and NG2 mRNA were upregulated with a maximum around 2 days post-lesion. In contrast, aggrecan mRNA levels reached a maximum 7 days post-lesion and phosphacan mRNA levels were not significantly altered. Taken together, our data reveal a temporal pattern in CSPG mRNA expression in the denervated fascia dentata. This suggests specific biological functions for CSPGs during the denervation-induced reorganization process: whereas the early increase in CSPGs in the denervated zone could influence the pattern of sprouting, the late increase of aggrecan mRNA suggests a different role during the late phase of reorganization.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
439
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
61-5
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Differential regulation of chondroitin sulfate proteoglycan mRNAs in the denervated rat fascia dentata after unilateral entorhinal cortex lesion.
pubmed:affiliation
Institute of Clinical Neuroanatomy, Johann Wolfgang Goethe-University, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't