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Type: Journal article
Title: Characterization of a C57BL/6 congenic mouse strain of mucopolysaccharidosis type IIIA
Author: Crawley, A.
Gliddon, B.
Auclair, D.
Brodie, S.
Hirte, C.
King, B.
Fuller, M.
Hemsley, K.
Hopwood, J.
Citation: Brain Research, 2006; 1104(1):1-17
Publisher: Elsevier Science Bv
Issue Date: 2006
ISSN: 0006-8993
Statement of
Allison C. Crawley, Briony L. Gliddon, Dyane Auclair, Suzanne L. Brodie, Craig Hirte, Barbara M. King, Maria Fuller, Kim M. Hemsley, John J. Hopwood
Abstract: The original mucopolysaccharidosis type IIIA (MPS IIIA) mice were identified in a mixed background with contributions from four different strains. To ensure long-term stability and genetic homogeneity of this lysosomal storage disease (LSD) model, the aim of this study was to develop and characterize a C57BL/6 congenic strain. The B6.Cg-Sgsh(mps3a) strain compares favorably with the original mixed donor strain, exhibiting low liver sulfamidase activity and significant brain heparan sulfate-derived disaccharide elevation from birth. A rapid increase in brain disaccharide levels occurred after birth, with a plateau reached by 13 weeks of age at 110x the levels observed in brains of age-matched unaffected mice. Typical lysosomal inclusions were observed in cerebral cortical and cerebellar neurons and in liver hepatocytes and Kupffer cells. Ubiquitin-positive spheroids and GM(2)-ganglioside were also detected in brain. Using the Morris water maze in male mice, impaired memory and spatial learning was evident at 20 weeks of age in B6.Cg-Sgsh(mps3a) MPS IIIA mice. Other behavioral changes include motor, cognitive and sensory deficits, and aggression. Male B6.Cg-Sgsh(mps3a) MPS IIIA mice exhibited more behavioral abnormalities than B6.Cg-Sgsh(mps3a) MPS IIIA females, as observed previously in the original mixed background strain. Affected mice generally survive to 9 to 12 months of age, before death or euthanasia for humane reasons. Overall, minor differences were apparent between the new congenic and previously described mixed MPS IIIA strains. Availability of an in-bred strain will ensure more reproducible experimental outcomes thereby assisting in our goal of developing effective therapies for LSD with central nervous system disease.
Keywords: animal model
lysosomal storage disease
Sanfilippo syndrome
sulfamidase deficiency
mouse behavior
central nervous system
tandem mass spectrometry
DOI: 10.1016/j.brainres.2006.05.079
Appears in Collections:Aurora harvest 2
Paediatrics publications

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