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Scand J Clin Lab Invest. 1999 Dec;59(8):607-12.

Metabolic syndrome is associated with changes in D-mannose metabolism.

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Hospital for Children and Adolescents, University Hospital, Helsinki, Finland.


Serum mannose concentration increases in diabetic patients and correlates closely with blood glucose. In patients with glomerulonephritis, serum mannose and mannose/glucose ratio positively correlate with dyslipidemia and the extent of urinary protein excretion. We investigated whether changes in serum mannose mark subjects with features of metabolic syndrome, including obesity, hypertension, glucose intolerance, and dyslipidemia. The study comprised 20 patients with mean age of 68 (SD 11) years, body mass index 27.2 (SD 5.1) kg/m2, blood glucose 6.2 (SD 1.6) mmol/L, serum total cholesterol 6.3 (SD 1.2) mmol/L, triglyceride 2.0 (SD 0.08) mmol/L, uric acid 320 (SD 109) micromol/L, mannose 60.0 (SD 17) micromol/L, and mannose/glucose ratio 9.7 (SD 1.8) micromol/mmol. Serum mannose correlated with blood glucose (r=0.758, p=0.012), triglyceride (r=0.478, p=0.023), and HDL-cholesterol (r = approximately 0.427, p=0.022). Mannose/glucose ratio correlated with BMI (r=0.581, p=0.033), mannose (r=0.491, p=0.035), and uric acid (r=0.608, p=0.027). The rate of VLDL lipoprotein turnover may be instrumental in the regulation of serum mannose concentration. We conclude that an altered mannose metabolism is a novel consideration among the metabolic abnormalities in the metabolic syndrome.

[Indexed for MEDLINE]

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