[Urinary glycosaminoglycans in patients with non-insulin-dependent diabetes mellitus, collagen diseases and IgA nephropathy].
Urinary levels of glycosaminoglycans (U-GAG) were measured in 72 patients with non-insulin-dependent diabetes mellitus, 12 patients with collagen diseases, 14 patients with IgA nephropathy and 35 healthy subjects as controls to investigate the clinical significance of urinary GAG. The mean urinary GAG levels in diabetics and patients with collagen diseases were 72.4 +/- 36.2 and 147.8 +/- 59.2 mg/g.cr, respectively. These were significantly higher than the level in healthy subjects (46.7 +/- 11.3 mg/g.cr, p < 0.01). The mean urinary GAG level in patients with IgA nephropathy was 56.4 +/- 21.0 mg/g.cr and did not differ from that in healthy subjects. The mean urinary GAG level in 35 normoalbuminuric diabetic patients (U-A1b < 30 mg/g.cr) was 64.4 +/- 25.6 mg/g.cr and was significantly higher than that in healthy subjects (p < 0.01). The mean urinary GAG levels in 24 microalbuminuric patients (30 < U-A1b < or = 300 mg/g.cr) and 13 patients with overt albuminuria (U-Alb > or = 300 mg/g.cr) were 71.4 +/- 30.1 and 95.8 +/- 58.4 mg/g.cr, respectively and were also higher than the level in healthy subjects (both p < 0.01). Urinary GAG levels correlated positively with urinary albumin levels (r = 0.251, p < 0.05) and urinary N-acetyl-beta-D-glucosaminidase activities in diabetics (r = 0.491, p < 0.01). The prevalence of diabetic macroangiopathies in diabetic patients with elevated levels of urinary GAG was significantly higher than that in those with normal levels of urinary GAG (p < 0.05).
PubMed Abstracts
PubMed Abstracts