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Biomedical subjects

N Shimada

Publications and source records attributed to N Shimada.

At least 415 records · Page 23Linked to original sources
PubMed1977

Properties of the alpha-glucosidase from various human tissues in relation to glycogenosis type II (Pompe's disease).

The physico-chemical and electrophoretical properties of alpha-glucosidases from various human tissues and urine have been studied. There were some differences among Peak I enzymes (neutral alpha-glucosidases) obtained from liver, heart, muscle, kidney and urine. These differences are based on different effects of tris(hydroxymethyl)aminomethane and various thermostabilities of the Peak I enzymes. Electrophoretically, the Peak I enzyme activity at pH 6.5 from control tissues displayed a two-banded pattern except in kidney and urine. In the patient with the adult form of Pompe's disease the faster band of the Peak I enzyme from heart and muscle was not found and the slower band of the Peak I enzyme from liver was more cathodic. The results are discussed in relation to glycogenosis type II (Pompe's disease).

Copper↗
PubMed1977

Urinary alpha-glucosidase analysis for the detection of the adult form of Pompe's disease.

Two alpha-glucosidases from human heart, liver, muscle, kidney and urine have been separated by means of Sephadex G-100 gel filtration. The first peak (Peak I) was neutral alpha-glucosidase and the second peak (Peak II) was lysosomal acid alpha-glucosidase. Peak II was absent in a patient with the adult form of Pompe's disease. KCl stimulated the activity of the Peak II enzyme but it strongly inhibited the activity of the Peak I enzyme measured at pH 4.0. Decreases in the urinary alpha-glucosidase activity measured at pH 4.0 with added KCl and the ratio of the activity at pH 4.0 with added KCl/the activity at pH 6.5 without KCl may aid in the detection of homozygotes or heterozygotes with the adult form of Pompe's disease.

Adolescent↗