Linked Life Data

12111813

Source:http://linkedlifedata.com/resource/pubmed/id/12111813

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-7-11
pubmed:abstractText
Sanfilippo syndrome type B (MPS III B) is a neurodegenerative disorder characterized by profound mental retardation and early death. It is caused by deficiency of a lysosomal enzyme involved in heparan sulfate (HS) degradation. Because HS accumulation can be a major feature of this disease, we have examined crucial molecular systems associated with HS function. Using a knockout mouse with disruption of the gene responsible for HS degradation, we evaluated the effects of possible HS accumulation on neuroplasticity that are within the spectrum of action of fibroblast growth factors (FGFs) and their receptor (FGFR). We found that levels of mRNA for the FGFR-1 were attenuated in the mutant mice by the age of 6 months, whereas the mRNAs for FGF-1 and FGF-2 were reduced or unchanged in the brain regions tested. Neurogenesis, in which FGF-2 is involved, was inhibited in the MPS III B mouse brain at both young and adult ages. We also examined the expression of the glial fibrillary acidic protein (GFAP) gene and GFAP-positive cell density in both normal and injured conditions to study the functional response of astrocytes to insult. We found that, although the mutation alone caused drastic induction of reactive astrocytes, acute injury to the mutant brains failed to induce additional reactive astrocytes. Our results showed important alterations in the expression of several genes involved in the maintenance of neuroplasticity in the MPS III B. This in turn may result in reduction of neuronal health and brain function.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0360-4012
pubmed:author
pubmed:copyrightInfo
Copyright 2002 Wiley-Liss, Inc.
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
30-8
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:12111813-Acetylglucosaminidase, pubmed-meshheading:12111813-Animals, pubmed-meshheading:12111813-Astrocytes, pubmed-meshheading:12111813-Cell Division, pubmed-meshheading:12111813-Cell Survival, pubmed-meshheading:12111813-Disease Models, Animal, pubmed-meshheading:12111813-Fibroblast Growth Factors, pubmed-meshheading:12111813-Glial Fibrillary Acidic Protein, pubmed-meshheading:12111813-Heparitin Sulfate, pubmed-meshheading:12111813-Male, pubmed-meshheading:12111813-Mice, pubmed-meshheading:12111813-Mice, Knockout, pubmed-meshheading:12111813-Mucopolysaccharidosis III, pubmed-meshheading:12111813-Neuronal Plasticity, pubmed-meshheading:12111813-Neurons, pubmed-meshheading:12111813-Receptor, Fibroblast Growth Factor, Type 1, pubmed-meshheading:12111813-Receptor Protein-Tyrosine Kinases, pubmed-meshheading:12111813-Receptors, Fibroblast Growth Factor, pubmed-meshheading:12111813-Stem Cells
pubmed:year
2002
pubmed:articleTitle
Attenuated plasticity in neurons and astrocytes in the mouse model of Sanfilippo syndrome type B.
pubmed:affiliation
Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, California, USA. hli@mednet.ucla.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't