A variant form of metachromatic leukodystrophy without arylsulfatase deficiency. 1982

A F Hahn, and B A Gordon, and G G Hinton, and J J Gilbert

The clinical, pathological, and biochemical findings in a young woman with a new variant of metachromatic leukodystrophy (MLD) are reported. The patient showed slow early development and deteriorated further during her first two decades. Nerve conductions were slow, and a sural nerve biopsy showed features of a sulfatide lipidosis. Urinary sulfatide excretion was comparable to that of patients with classic MLD, yet in vitro activity of arylsulfatase A and B and cerebroside sulfatase activity were normal. Skin fibroblasts cultured in medium supplemented with 3H-labeled sulfatide showed accumulation of labeled sulfatide in large amounts, implying a defect in sulfatide hydrolysis in vivo in spite of intact enzyme activity in vitro.

UI MeSH Term Description Entries
D007527 Isoenzymes Structurally related forms of an enzyme. Each isoenzyme has the same mechanism and classification, but differs in its chemical, physical, or immunological characteristics. Alloenzyme,Allozyme,Isoenzyme,Isozyme,Isozymes,Alloenzymes,Allozymes
D007966 Leukodystrophy, Metachromatic An autosomal recessive metabolic disease caused by a deficiency of CEREBROSIDE-SULFATASE leading to intralysosomal accumulation of cerebroside sulfate (SULFOGLYCOSPHINGOLIPIDS) in the nervous system and other organs. Pathological features include diffuse demyelination, and metachromatically-staining granules in many cell types such as the GLIAL CELLS. There are several allelic and nonallelic forms with a variety of neurological symptoms. Arylsulfatase A Deficiency Disease,Cerebroside Sulphatase Deficiency Disease,ARSA Deficiency,Arylsulfatase A Deficiency,Cerebral sclerosis, Diffuse, Metachromatic Form,Cerebroside Sulfatase Deficiency,Greenfield Disease,Greenfield's Disease,Leukodystrophy, Metachromatic, Adult,Leukodystrophy, Metachromatic, Juvenile,Metachromatic Leukodystrophy,Metachromatic Leukodystrophy, Adult,Metachromatic Leukodystrophy, Adult-Type,Metachromatic Leukodystrophy, Infant,Metachromatic Leukodystrophy, Infant-Type,Metachromatic Leukodystrophy, Juvenile,Metachromatic Leukodystrophy, Juvenile-Type,Metachromatic Leukodystrophy, Late Infantile,Metachromatic Leukoencephalopathy,Sulfatide Lipidosis,ARSA Deficiencies,Adult Metachromatic Leukodystrophies,Adult Metachromatic Leukodystrophy,Adult-Type Metachromatic Leukodystrophies,Adult-Type Metachromatic Leukodystrophy,Arylsulfatase A Deficiencies,Cerebroside Sulfatase Deficiencies,Deficiencies, ARSA,Deficiencies, Arylsulfatase A,Deficiencies, Cerebroside Sulfatase,Deficiency, ARSA,Deficiency, Arylsulfatase A,Deficiency, Cerebroside Sulfatase,Infant Metachromatic Leukodystrophies,Infant Metachromatic Leukodystrophy,Infant-Type Metachromatic Leukodystrophies,Infant-Type Metachromatic Leukodystrophy,Juvenile Metachromatic Leukodystrophies,Juvenile Metachromatic Leukodystrophy,Juvenile-Type Metachromatic Leukodystrophies,Juvenile-Type Metachromatic Leukodystrophy,Leukodystrophies, Adult Metachromatic,Leukodystrophies, Adult-Type Metachromatic,Leukodystrophies, Juvenile Metachromatic,Leukodystrophies, Juvenile-Type Metachromatic,Leukodystrophies, Metachromatic,Leukodystrophy, Adult Metachromatic,Leukodystrophy, Adult-Type Metachromatic,Leukodystrophy, Juvenile Metachromatic,Leukodystrophy, Juvenile-Type Metachromatic,Leukoencephalopathies, Metachromatic,Leukoencephalopathy, Metachromatic,Lipidosis, Sulfatide,Metachromatic Leukodystrophies,Metachromatic Leukodystrophies, Adult,Metachromatic Leukodystrophies, Adult-Type,Metachromatic Leukodystrophies, Infant,Metachromatic Leukodystrophies, Infant-Type,Metachromatic Leukodystrophies, Juvenile,Metachromatic Leukodystrophies, Juvenile-Type,Metachromatic Leukodystrophy, Adult Type,Metachromatic Leukodystrophy, Infant Type,Metachromatic Leukodystrophy, Juvenile Type,Metachromatic Leukoencephalopathies,Sulfatase Deficiencies, Cerebroside,Sulfatase Deficiency, Cerebroside
D009413 Nerve Fibers, Myelinated A class of nerve fibers as defined by their structure, specifically the nerve sheath arrangement. The AXONS of the myelinated nerve fibers are completely encased in a MYELIN SHEATH. They are fibers of relatively large and varied diameters. Their NEURAL CONDUCTION rates are faster than those of the unmyelinated nerve fibers (NERVE FIBERS, UNMYELINATED). Myelinated nerve fibers are present in somatic and autonomic nerves. A Fibers,B Fibers,Fiber, Myelinated Nerve,Fibers, Myelinated Nerve,Myelinated Nerve Fiber,Myelinated Nerve Fibers,Nerve Fiber, Myelinated
D009431 Neural Conduction The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus. Nerve Conduction,Conduction, Nerve,Conduction, Neural,Conductions, Nerve,Conductions, Neural,Nerve Conductions,Neural Conductions
D002553 Cerebroside-Sulfatase An enzyme that catalyzes the hydrolysis of cerebroside 3-sulfate (sulfatide) to yield a cerebroside and inorganic sulfate. A marked deficiency of arylsulfatase A, which is considered the heat-labile component of cerebroside sulfatase, has been demonstrated in all forms of metachromatic leukodystrophy (LEUKODYSTROPHY, METACHROMATIC). EC 3.1.6.8. Arylsulfatase A,Sulfatidate Sulfatase,Cerebroside Sulfatase,Sulfatase, Sulfatidate
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D005260 Female Females
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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