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PubMed1995

[Fructosamine].

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Child↗
PubMed1996

Effects of parathyroid hormone and 1,25(OH2)D3 on protein glycation in moderate uraemia.

Glucose intolerance in uraemia may be a consequence of secondary hyperparathyroidism. In this study fructosamine and glycated albumin have been used as markers of long-term glycaemic control in a group of pre-end-stage, non-diabetic uraemic patients with secondary hyperparathyroidism. The serum fructosamine level (mumol/100 g total protein) was significantly higher (p = 0.005) in uraemic patients (364 +/- 42) than in a group of 25 non-uraemic controls (332 +/- 27), but the content of glycated albumin did not differ (p > 0.05; 1.6 +/- 0.5 vs. 1.5 +/- 0.3%). In the uraemic patients, there was a significant relationship between serum 1,25-dihydroxycholecalciferol [1,25(OH2)D] (median 4.2, range 1.0-38 ng/l) and fructosamine (r = -0.66, p < 0.01; fructosamine = -2.76 1,25(OH2)D + 389), but not glycated albumin (r = -0.22, p > 0.1). No relationship existed between serum parathyroid hormone (median 15.4, range 7.0-55 pmol/l) and either glycated albumin or fructosamine (p > 0.1). In patients treated with oral calcitriol (0.25 microgram/day), significant reductions in serum parathyroid hormone after both 4 (p = 0.03) and 8 weeks (p = 0.02) and concomitant increases in serum 1,25(OH2)D (p < 0.02) after 8 weeks of treatment were not accompanied by any change in fructosamine, glycated albumin, total calcium, or ionized calcium (p > 0.05). Elevation of serum fructosamine in these patients is consistent with the impaired glucose tolerance of uraemia. The evidence presented supports a relationship between long-term glycaemic control and 1,25(OH2)D3, but not parathyroid hormone, in moderately uraemic patients with secondary hyperparathyroidism; however, serum fructosamine was not altered by treatment with calcitriol over an 8-week period.

Calcitriol↗
PubMed1990

Glycometabolic control and fibrinolysis in diabetic patients.

We investigated 148 diabetic patients with regard to their relationship between fibrinolysis (D-dimer and plasminogen activator inhibitor; PAI) and glycometabolic control (HbA1c, HbA1 and fructosamine). The percentage of moderately controlled patients as indicated by HbA1c, HbA1 and fructosamine is relatively high (29.7, 41.7 and 30.4%, respectively). Simultaneously, the D-dimer and PAI levels turned out to be enhanced in 30.8 and 22.4% of the patients. There was a positive nonsignificant correlation between D-dimer and HbA1c, a highly significant negative correlation between D-dimer and HbA1 and a nonsignificant negative correlation between D-dimer and fructosamine. According to the upper limits of the distinct reference ranges for HbA1c, HbA1 and fructosamine, we splitted up the D-dimer results and calculated the mean D-dimer values belonging to each category. Comparing the D-dimer means for each parameter, we separately obtained significant differences of the D-dimer means between the lower and higher HbA1 and fructosamine groups, whereas in the case of HbA1c the mean D-dimer values of the categories under and over 9% showed no significant difference. For PAI, we found only weak nonsignificant positive correlations to D-dimer and fructosamine and weak but highly significant correlations to HbA1c. These results are indicative for an increase of PAI with diminished glycometabolic control as measured with the HbA1c and fructosamine level. Both D-dimer and PAI showed positive, highly significant correlations to the age of the diabetic patients, whereas HbA1c and fructosamine were age independent.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1989

A comparison of direct measures of glycaemia and glycated blood proteins in insulin-dependent diabetes mellitus.

We have studied associations between various direct measures of glycaemia and glycated blood proteins in 113 subjects with insulin-dependent diabetes mellitus (IDDM), and examined whether or not the 'fructosamine' assay results were affected by differing patient serum concentrations of lipids, albumin or C peptide. Serum fructosamine correlated less closely with HbA1 (r = 0.44) than did HbA1 with glycated serum albumin (GSA) (r = 0.68). Serum fructosamine and GSA also were poorly correlated (r = 0.48). Although fructosamine, HbA1 and GSA correlated to a similar degree with fasting blood glucose (r range 0.34 to 0.37), GSA was most closely related to mean blood glucose (r = 0.39 vs. 0.30-0.35) and the M value (a marker of diurnal glycaemic instability) (r = 0.42 vs. 0.33-0.35). The serum concentration of fructosamine was not significantly affected by a variation in serum cholesterol, but tended to be lower in subjects with moderate hypertriglyceridaemia (p = 0.05). The fructosamine assay may be altered by moderately lipaemic serum but is not affected by serum albumin concentration in normoalbuminaemic patients with IDDM. Our study indicates, however, that GSA is a more reliable marker of short-term glycaemic control in IDDM than fructosamine.

Adolescent↗