Clinical and molecular heterogeneity in hereditary beta-galactosidase deficiency. 1991

Y Suzuki, and H Sakuraba, and A Oshima, and K Yoshida, and M Shimmoto, and T Takano, and Y Fukuhara
Department of Clinical Genetics, Tokyo Metropolitan Institute of Medical Science, Japan.

Results of a molecular analysis of GM1-gangliosidosis and galactosialidosis in our laboratory are briefly reviewed. A common single base substitution was found in adult/chronic form of GM1-gangliosidosis among heterogeneous beta-galactosidase gene mutations, and restriction site analysis was successfully performed for diagnosis of homozygotes and heterozygotes. All adult galactosialidosis patients had a common mutation at a splice junction which caused skipping of an exon of the protective protein/carboxypeptidase gene. An artificial restriction site was introduced in this case and applied to diagnosis of this disease. The heterogeneous gene mutations were compared and correlated with phenotypic manifestations in these two diseases.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008247 Lysosomes A class of morphologically heterogeneous cytoplasmic particles in animal and plant tissues characterized by their content of hydrolytic enzymes and the structure-linked latency of these enzymes. The intracellular functions of lysosomes depend on their lytic potential. The single unit membrane of the lysosome acts as a barrier between the enzymes enclosed in the lysosome and the external substrate. The activity of the enzymes contained in lysosomes is limited or nil unless the vesicle in which they are enclosed is ruptured or undergoes MEMBRANE FUSION. (From Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed). Autolysosome,Autolysosomes,Lysosome
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D002239 Carbohydrate Metabolism, Inborn Errors Dysfunctions of CARBOHYDRATE METABOLISM resulting from inborn genetic mutations that are inherited or acquired in utero. Carbohydrate Metabolism, Inborn Error
D002268 Carboxypeptidases Enzymes that act at a free C-terminus of a polypeptide to liberate a single amino acid residue. Carboxypeptidase
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
D004252 DNA Mutational Analysis Biochemical identification of mutational changes in a nucleotide sequence. Mutational Analysis, DNA,Analysis, DNA Mutational,Analyses, DNA Mutational,DNA Mutational Analyses,Mutational Analyses, DNA
D005796 Genes A category of nucleic acid sequences that function as units of heredity and which code for the basic instructions for the development, reproduction, and maintenance of organisms. Cistron,Gene,Genetic Materials,Cistrons,Genetic Material,Material, Genetic,Materials, Genetic

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