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Apparent allelism of the Hurler, Scheie, and Hurler/Scheie syndromes. 1984

O T Mueller, and T B Shows, and J M Opitz

The Hurler, Scheie, and Hurler/Scheie syndromes are clinically distinct disorders due to inherited deficiencies of lysosomal alpha-iduronidase activity. The genetic relationship of these disorders was investigated by complementation analysis using a heterokaryon enrichment procedure. Fusions between fibroblasts derived from Hurler, Scheie, or Hurler/Scheie subjects in any combination resulted in no detectable correction of alpha-iduronidase activity, indicating that they form a single complementation group. Control fusions between these fibroblasts and mucolipidosis II or III cells, which are also alpha-iduronidase deficient due to an enzyme processing defect, resulted in restoration of up to 57% of normal alpha-iduronidase activity. These results also suggest allelism of the Hurler, Scheie, and Hurler/Scheie syndromes. However, the genetic make-up of the Hurler/Scheie syndrome was not resolved.

UI MeSH Term Description Entries
D007068 Iduronidase An enzyme that hydrolyzes iduronosidic linkages in desulfated dermatan. Deficiency of this enzyme produces Hurler's syndrome. EC 3.2.1.76. alpha-L-Idosiduronase,alpha-L-Iduronidase,alpha L Idosiduronase,alpha L Iduronidase
D008059 Mucopolysaccharidosis I Systemic lysosomal storage disease caused by a deficiency of alpha-L-iduronidase (IDURONIDASE) and characterized by progressive physical deterioration with urinary excretion of DERMATAN SULFATE and HEPARAN SULFATE. There are three recognized phenotypes representing a spectrum of clinical severity from severe to mild: Hurler syndrome, Hurler-Scheie syndrome and Scheie syndrome (formerly mucopolysaccharidosis V). Symptoms may include DWARFISM; hepatosplenomegaly; thick, coarse facial features with low nasal bridge; corneal clouding; cardiac complications; and noisy breathing. Hurler's Syndrome,Hurler-Scheie Syndrome,Lipochondrodystrophy,Mucopolysaccharidosis V,Pfaundler-Hurler Syndrome,Scheie's Syndrome,Gargoylism,Gargoylism, Hurler Syndrome,Hurler Disease,Hurler Syndrome,Hurler's Disease,Mucopolysaccharidosis 1,Mucopolysaccharidosis 5,Mucopolysaccharidosis I-S,Mucopolysaccharidosis Type I,Mucopolysaccharidosis Type Ih,Mucopolysaccharidosis Type Ih S,Mucopolysaccharidosis Type Is,Scheie Syndrome,alpha-L-Iduronidase Deficiency,Disease, Hurler's,Gargoylisms,Hurler Scheie Syndrome,Hurler Syndrome Gargoylism,Lipochondrodystrophies,Mucopolysaccharidosis I S,Mucopolysaccharidosis Is,Mucopolysaccharidosis Type Ihs,Syndrome, Hurler's,Syndrome, Scheie's,Type Ih, Mucopolysaccharidosis,Type Ihs, Mucopolysaccharidosis,alpha L Iduronidase Deficiency,alpha-L-Iduronidase Deficiencies
D008297 Male Males
D009083 Mucopolysaccharidoses Group of lysosomal storage diseases each caused by an inherited deficiency of an enzyme involved in the degradation of glycosaminoglycans (mucopolysaccharides). The diseases are progressive and often display a wide spectrum of clinical severity within one enzyme deficiency. Mucopolysaccharidosis
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D003937 Diagnosis, Differential Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures. Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D005816 Genetic Complementation Test A test used to determine whether or not complementation (compensation in the form of dominance) will occur in a cell with a given mutant phenotype when another mutant genome, encoding the same mutant phenotype, is introduced into that cell. Allelism Test,Cis Test,Cis-Trans Test,Complementation Test,Trans Test,Allelism Tests,Cis Tests,Cis Trans Test,Cis-Trans Tests,Complementation Test, Genetic,Complementation Tests,Complementation Tests, Genetic,Genetic Complementation Tests,Trans Tests
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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