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  • Title: Insulin-induced hypoglycaemia and absorption of injected insulin in diabetic patients.
    Author: Fernqvist-Forbes E, Gunnarsson R, Linde B.
    Journal: Diabet Med; 1989; 6(7):621-6. PubMed ID: 2527704.
    Abstract:
    The effect of insulin-induced hypoglycaemia (soluble insulin 1 mU kg-1 min-1 IV) on the absorption of 125I-labelled soluble insulin (10 U SC) from thigh was studied in 10 insulin-treated Type 1 diabetic patients on a test and a control day. Disappearance of 125I was followed by external gamma counting. Adipose tissue blood flow was measured concomitantly using the 133Xe-clearance technique. Arterial plasma levels of glucose, insulin, adrenaline and noradrenaline were determined intermittently. Hypoglycaemia occurred at a glucose level of 2.2 +/- 0.1 (+/- SE) mmol l-1 after 58 +/- 6 min. Peak levels of adrenaline (6.44 +/- 1.62 nmol l-1) and noradrenaline (2.29 +/- 0.39 nmol l-1) were found 10 min later. During the 30-min period after onset of hypoglycaemia, adipose tissue blood flow increased 132 +/- 45% (p less than 0.05) but the disappearance rate of 125I-insulin was unchanged. Thus, insulin absorption was unaltered in connection with hypoglycaemia in Type 1 diabetic patients, in contrast to the depression previously reported in healthy subjects, despite similar increases in adipose tissue blood flow.
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