β-Galactosidase in mucopolysaccharidoses and mucolipidoses. deficiency of GM1 β-galactosidase in liver and leukocytes
- Resource Type
- Authors
- Handa Shizuo; Suzuki Yoshiyuki; Wey Jau Jinn; Fukuoka Kazuko
- Source
- Clinica Chimica Acta. 75:91-97
- Subject
- Adult
Male
medicine.medical_specialty
Enzyme deficiency
Adolescent
Clinical Biochemistry
Disease
Biochemistry
Glycosaminoglycan
Mucolipidoses
Internal medicine
Leukocytes
medicine
Humans
Child
biology
Biochemistry (medical)
Infant
General Medicine
Mucopolysaccharidoses
Enzyme assay
Galactosidases
Endocrinology
Liver
Child, Preschool
biology.protein
Female
Lysosomes
- Language
- ISSN
- 0009-8981
beta-Galactosidase activities were studied in livers and leukocytes of mucopolysaccharidoses and mucolipidoses (I-cell disease and adult "beta-galactosidase deficiency" with macular cherry-red spots). Marked deficiency of hepatic 4-methylumbelliferyl (4MU) and GM1 beta-galactosidases was demonstrated in these diseases. Leukocyte GM1 beta-galactosidase was also deficient in mucolipidoses. The parents of the patients with I-cell disease and "beta-galactosidase deficiency" had normal beta-galactosidase activity in plasma and leukocytes, compared to the low enzyme activity in heterozygous carriers of GM1-gangliosidosis. The cause of this enzyme deficiency in these diseases is not clear at present. It seems to be affected seondarily by exgenous factors such as unknown stored materials in the cells. Mucopolysaccharides were not increased in the livers of two cases of I-cell disease and a case of "beta-galactosidase deficiency".