Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/7699
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dc.contributor.authorAuclair, D.en
dc.contributor.authorHopwood, J.en
dc.contributor.authorBrooks, D.en
dc.contributor.authorLemontt, J.en
dc.contributor.authorCrawley, A.en
dc.date.issued2003en
dc.identifier.citationMolecular Genetics and Metabolism, 2003; 78(3):163-174en
dc.identifier.issn1096-7192en
dc.identifier.issn1096-7206en
dc.identifier.urihttp://hdl.handle.net/2440/7699-
dc.description.abstractThis study evaluates the immunological response following weekly 2h infusions of recombinant human N-acetylgalactosamine 4-sulfatase (rh4S) in Mucopolysaccharidosis VI (MPS VI) cats. The results of three trials (Trial "A": 9 month duration with onset at 3-5 months of age, n = 5; and Trials "B" and "C": 6 month duration starting at birth, n = 9) were compared. No detrimental effects were noted throughout Trials B and C. Temporary hypersensitivity reactions (e.g., vomiting, diarrhoea) occurred in four cats in Trial A and were alleviated by increasing the dose of antihistamine premedication and the duration of infusion. All cats in Trial A developed antibodies to rh4S (range of final titres: 1041-134,931). All cats treated from birth showed negligible titres (range: < 50-598). In vitro inhibition of rh4S activity (up to 47%) was demonstrated with plasma from four cats with elevated titres. Significant reduction of urinary glycosaminoglycan concentration in all cats indicated the ability of rh4S to metabolize stored substrates regardless of the presence of circulating antibodies. Similarly, lysosomal storage in reticuloendothelial cells and fibroblasts of kidney interstistium, dura and skin was reduced in all cats irrespective of their antibody titre although cats with elevated titre had less beneficial effect on cardiovascular tissues (aorta smooth muscle cells, heart valve fibroblasts). Overall improvement in the disease condition (at physical, neurological, and skeletal levels) was most pronounced for cats treated from birth compared with cats treated at a later age.en
dc.language.isoenen
dc.publisherAcademic Press Inc Elsevier Scienceen
dc.subjectBone and Bones; Lysosomes; Animals; Animals, Newborn; Cats; Humans; Mucopolysaccharidosis VI; Hypersensitivity; Disease Models, Animal; Cyproheptadine; N-Acetylgalactosamine-4-Sulfatase; Glycosaminoglycans; Complement Hemolytic Activity Assay; Treatment Outcome; Autopsy; Age Factors; Organ Specificity; Dose-Response Relationship, Drug; Time Factorsen
dc.titleReplacement therapy in Mucopolysaccharidosis type VI: advantages of early onset of therapyen
dc.typeJournal articleen
dc.identifier.rmid0020031259en
dc.identifier.doi10.1016/S1096-7192(03)00007-6en
dc.identifier.pubid58284-
pubs.library.collectionPaediatrics publicationsen
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidBrooks, D. [0000-0001-9098-3626]en
Appears in Collections:Paediatrics publications

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