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In 672 newly-diagnosed, Type 2 (non-insulin-dependent) diabetic patients without urinary infection, aged 51 (9) years, mean (1 SD), 28% of patients had raised albuminuria, defined as albumin excretion greater than 25 mg/l and 66% raised urinary N-acetylglucosaminidase excretion defined as greater than 300 mumol.h-1.l-1 (both urinary analytes corrected by linear regression on urinary creatinine to 10 mmol/1). In a univariate analysis, urinary N-acetylglucosaminidase and albumin excretion correlated with each other (rs = 0.42, p < 0.001), and with fasting plasma glucose (rs = 0.46 and rs = 0.27, p < 0.001, respectively). The association of urinary albumin and N-acetylglucosaminidase remained significant after taking the fasting plasma glucose levels into account, partial rs = 0.34, p < 0.001. After 3 months of dietary therapy BMI decreased from 29.7 (5.9) kg/m2 to 28.8 (5.8) kg/m2, fasting plasma glucose levels from 12.2 (3.8) mmol/l to 9.8 (3.8) mmol/l, and systolic blood pressure from 143 (21.8) mmHg to 131 (20.3) mmHg, p < 0.001 for each variable. There were concomitant decreases in urinary N-acetylglucosaminidase, geometric mean (1 SD interval), 397 mumol.h-1.l-1 (216 to 728) to 291 mumol.h-1.l-1 (160 to 528), p < 0.001 and in albumin excretion 16 mg/l (5 to 51) to 13 mg/l (4 to 40), p < 0.001. The decrease in urinary N-acetylglucosaminidase, but not the decrease in urinary albumin excretion, was associated with the initial degree of glycaemia and the decrease in glycaemia in response to diet.(ABSTRACT TRUNCATED AT 250 WORDS)

Type

Journal article

Journal

Diabetologia

Publication Date

09/1993

Volume

36

Pages

835 - 842

Keywords

Acetylglucosaminidase, Albuminuria, Biomarkers, Blood Glucose, Blood Pressure, Diabetes Mellitus, Type 2, Diet, Diabetic, Female, Glycated Hemoglobin A, Humans, Hypertension, Male, Middle Aged, Prospective Studies, Regression Analysis, Time Factors, United Kingdom