INCREASED PLASMA ACTIVITIES OF N-ACETYL-β-D-GLUCOSAMINIDASE ISOENZYMES IN HUMAN DIABETES MELLITUS

Abstract
Plasma N-acetyl-β-D-glucosaminidase activities are raised in maturity-onset insulin-dependent diabetic patients. Continuous gradient DEAE-cellulose column chromatography and assay of heat-stable enzyme activity both show that the activities of all isoenzymes are equally increased rather than a previously described increase of specific isoenzymes. Plasma enzyme activities are similarly increased in patients with and without diabetic retinopathy, and correlate with simultaneous plasma glucose concentrations.