Abstract | OBJECTIVE: The first line-screening test for mucopolysaccharidosis is based on measurement of urinary glycosaminoglycans. The most reliable test for measurement of urine glycosaminoglycans is the 1,9-dimethyleneblue colorimetric assay. Biological markers are affected by ethnical factors, for this reason, the World Health Organization recommends that the diagnostic test characteristics should be used to determine results for different populations. This study determines the diagnostic value of 1,9-dimethyleneblue tests for diagnosis of mucopolysaccharidosis type I patients in Iran. MATERIALS & METHODS: In addition to routine urine analysis, the qualitative and quantitative measurements of urine glucosaminoglycans were performed with the Berry spot test and 1,9-dimethyleneblue assay. Diagnostic values of the tests were determined using the ROC curve. RESULTS: Urine total glycosaminoglycans were significantly higher in male subjects than in female subjects. Glycosaminoglycan concentration was markedly decreased in specimens with elevated white blood cell and epithelial cells count. Using a cut-off level of 10.37 mg/g creatinine, sensitivity, and specificity were 100% and 97.22%, respectively, for a 1,9-dimethyleneblue colorimetric assay. CONCLUSION:
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Authors | Mohammad Abdi, Mohammad Said Hakhamaneshi, Mohammad Reza Alaei, Namam-Ali Azadi, Rahim Vakili, Daniel Zamanfar, Mohammad Taghikhani, Shohreh Khatami |
Journal | Iranian journal of child neurology
(Iran J Child Neurol)
Vol. 8
Issue 4
Pg. 39-45
( 2014)
ISSN: 1735-4668 [Print] Iran |
PMID | 25657769
(Publication Type: Journal Article)
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