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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2004-3-22
pubmed:abstractText
Mucopolysaccharidosis IVA (MPS IVA), a progressive lysosomal storage disease, causes skeletal dysplasia through excessive storage of keratan sulfate (KS). We developed an ELISA-sandwich assay that used a MAb specific to KS. Forty-five blood and 59 urine specimens from MPS IVA patients (ages 1-65 y) were analyzed to determine whether KS concentration is a suitable marker for early diagnosis and longitudinal assessment of disease severity. Blood specimens were obtained from patients categorized as phenotypically severe (n = 36) and milder (n = 9). Urine specimens were also analyzed from patients categorized as severe (n = 56) and milder (n = 12), respectively. Blood KS levels (101-1525 ng/mL) in MPS IVA patients were two to eight times higher than those in age-matched controls (15-323 ng/mL). It was found that blood KS level varied with age and clinical severity. Blood KS levels in both MPS IVA and controls peaked between 5 and 10 y of age (mean, 776 versus 234 ng/mL, respectively). Blood levels in severe MPS IVA were 1.5 times higher than in the milder form. In contrast to blood, urine KS levels in both MPS IVA and controls peaked between 1 and 5 y (15.3 versus 0.26 mg/g creatinine), and thereafter declined with age. Urine KS level also varied with age and clinical severity, and the severe MPS IVA phenotype was associated with 6.7 times greater urine KS excretion than the milder one. These findings indicate that the new assay for blood or urine KS may be suitable for early diagnosis and longitudinal assessment of disease severity in MPS IVA.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0031-3998
pubmed:author
pubmed-author:BarreraLuis ALA, pubmed-author:BeckMichaelM, pubmed-author:CooperAlanA, pubmed-author:CreerMichaelM, pubmed-author:EduardPaschkeP, pubmed-author:FachelAbgela AAA, pubmed-author:FrenkingGudrun SchulzeGS, pubmed-author:GiuglianiRobertoR, pubmed-author:GrubbJeffrey HJH, pubmed-author:GutierrezMonica AMA, pubmed-author:IsogaiKojiK, pubmed-author:KircherSusanne GSG, pubmed-author:KondoNaomiN, pubmed-author:NishiokaTatsuoT, pubmed-author:NoguchiAkihikoA, pubmed-author:OkamuraKazuoK, pubmed-author:OriiKoji OKO, pubmed-author:OriiTadaoT, pubmed-author:SchwartzIda VIV, pubmed-author:SuzukiYasuyukiY, pubmed-author:TaketaniTakeshiT, pubmed-author:ThornleyMargaretM, pubmed-author:TomatsuShunjiS, pubmed-author:UllrichKurtK, pubmed-author:Velez-CastrillonSusanaS, pubmed-author:WraithEdE, pubmed-author:YamaguchiSeijiS
pubmed:issnType
Print
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
592-7
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Development and testing of new screening method for keratan sulfate in mucopolysaccharidosis IVA.
pubmed:affiliation
Edward A. Doisy Department of Biochemistry and Molecular Biology, St. Louis University School of Medicine, 1402 S. Grand Blvd., St. Louis, MO 63104, USA. tomatsus@slu.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies