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Solerte, S.B. et al.

Hyperviscosity and microproteinuria in central obesity: relevance to cardiovascular risk.

OBJECTIVES: To investigate the role of blood rheology changes in the occurrence of glomerular proteinuria in obese patients with central fat distribution. SUBJECTS: Fifty-nine obese out-patients (31 with central and 28 with peripheral body fat distribution) and 24 healthy subjects. MEASUREMENTS: Blood and plasma viscosity (Rotational viscometer CV100 HAAKE), erythrocyte deformability (whole-blood filtration time), fibrinogen (nephelometry), urinary excretion rates of albumin, IgG, transferrin and IgA (nephelometry). RESULTS: Higher blood viscosity (at low and high shear-rates), plasma viscosity, fibrinogen, erythrocyte aggregability and lower erythrocyte deformability were found in patients with central obesity than in patients with peripheral obesity (P < 0.01) and in healthy subjects (P < 0.001). Furthermore an increased urinary excretion rate of albumin (P < 0.001), IgG (P < 0.001), transferrin (P < 0.01) and IgA (P < 0.05) was found in patients with central obesity than in the other two groups. Blood hyperviscosity (at shear-rate 1 s-1 and 1/200 ratio) significantly correlated with the amount of urinary excretion of proteins independently of the other clinical and metabolic variables. CONCLUSIONS: The data demonstrated haemorheologic disorders related to pathologic proteinuria in patients with central obesity. The interaction between these two components may increase the risk of widespread cardiovascular disease.[1]

References

Hyperviscosity and microproteinuria in central obesity: relevance to cardiovascular risk. Solerte, S.B., Fioravanti, M., Pezza, N., Locatelli, M., Schifino, N., Cerutti, N., Severgnini, S., Rondanelli, M., Ferrari, E. Int. J. Obes. Relat. Metab. Disord. (1997) [Pubmed]

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