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- W1979401064 abstract "Abstract. The dose-response relationships between prestimulatory blood glucose concentration and the plasma C-peptide responses to stimulation with 1 mg of glucagon iv or a standard mixed meal were studied in 8 C-peptide positive patients with insulin-dependent diabetes mellitus. Hyperglycemia was maintained for 90 min before stimulation using a hyperglycemic clamp technique. Each test was performed at the steady state blood glucose levels ~5, ~12, and ~20 mmol/l. The glucose potentiation of the incremental plasma C-peptide area under the curve at the two levels of hyperglycemia in percent of the area at normoglycemia (median and range) was 343% (53-1053) (p<0.05) and 341% (267-1027) (p<0.05) after glucagon and 140% (76-227) (NS) and 251% (95-1700) (p<0.05) after the meal. The corresponding relative glucose potentiation of plasma C-peptide 6 min after stimulation with glucagon was 124% (100-427) (p<0.02) and 144% (100-209) (p<0.05). There was no significant difference in the degree of glucose potentiation at ~12 or ~20 mmol/l. Furthermore, there was no significant difference in the degree of glucose potentiation of the different estimated values of B-cell function. In conclusion, the plasma C-peptide responses to iv glucagon or to a standard test meal were markedly potentiated by acute hyperglycemia in insulin-dependent diabetes mellitus. No further potentiation was, however, obtained when the prestimulatory blood glucose concentration was raised above 12 mmol/l. These findings contrast those reported in non-insulin-dependent diabetes, where endogenous insulin secretion is potentiated further when the blood glucose concentration is raised to ~20 mmol/l." @default.
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- W1979401064 date "1991-05-01" @default.
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- W1979401064 title "The effect of acute hyperglycemia on the plasma C-peptide response to intravenous glucagon or to a mixed meal in insulin-dependent diabetes mellitus" @default.
- W1979401064 doi "https://doi.org/10.1530/acta.0.1240556" @default.
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