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  • Title: Intravenous insulin decreases urinary albumin excretion in long-term diabetics with nephropathy.
    Author: Christensen NJ, Gundersen HJ, Mogensen CE, Vittinghus E.
    Journal: Diabetologia; 1980 Apr; 18(4):285-8. PubMed ID: 6998798.
    Abstract:
    The effect of intravenous injection of insulin on heart rate, plasma noradrenaline and urinary excretion rates of albumin and beta-2-microglobulin was examined in 10 long-term diabetics, 5 of whom had albuminuria. --In patients without albuminuria intravenous injection of insulin resulted in changes similar to but less pronounced than those previously observed in short-term diabetics: albumin excretion, plasma noradrenaline and heart rate increased, creatinine excretion decreased significantly. --Intravenous injection of insulin increased heart rate but not plasma noradrenaline in long-term diabetics with albuminuria. Arterial blood pressure did not change after insulin. Contrary to expectation insulin decreased urinary albumin excretion (from 418 to 312 micrograms/min, 27 per cent) in these patients. There was a marked decrease in urinary excretion rates of beta-2-microglobulin and creatinine (55 and 17 per cent, respectively) after insulin. --The decrease in albumin excretion after insulin in diabetics with albuminuria is most likely due to renal vasoconstriction. The absence of a rise in albumin excretion after insulin may be due to severe morphological changes in glomeruli in these patients.
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