Plasma N-acetyl-?,D-glucosaminidase activities and glycaemia in diabetes mellitus

Abstract
The plasma activity of the lysosomal enzyme N-acetyl-β, D-glucosaminidase (NAGase) has been shown to correlate with hyperglycaemia; their temporal relationships have been investigated. In 12 insulin-treated male diabetic patients, NAGase showed a slight diurnal variation with a nadir at 07.00 h (F=9.54, ps=0.88, pβ-D-glucosamide released.h−1.ml−1; ppr = 0.48, p<0.05, respectively). Plasma NAGase activity may be influenced by glycaemia in diabetes.