Diabetologia

, Volume 20, Issue 1, pp 72–77 | Cite as

Effect of insulin on glucagon secretion mediated via glucose metabolism of pancreatic a cells in ducks

  • F. Laurent
  • R. Gross
  • M. Lakili
  • P. Mialhe
Originals

Summary

A possible action of insulin via glucose metabolism on the pancreatic A cell response to glucose, was studied in ducks. 2-Deoxyglucose, a non metabolizable analogue of glucose was used. In normal ducks, the hyperglycaemia induced by 2-deoxyglucose (IV: 0.5g/kg) resulted in hyper glucagonaemia, while the same degree of hyper glycaemia, induced by glucose infusion (IV injection 25 mg/kg, and infusion 5 mg/kg/min) immediately suppressed glucagon secretion. In diabetic ducks, two days after subtotal pancreatectomy, glucose responsiveness of the A cell was abolished, but could be restored by insulin treatment before (IM 0.2 U/kg insulin + 8 μg/kg glucagon every 6 h) and during (IV 3.6 mU/kg + infusion 0.9 mU/kg/min) the glucose test (IV: 0.5 g /kg). The normal response of the A cell to glucose was not observed in diabetic insulintreated ducks after the administration of 2-deoxyglucose (IV: 0.5 g/kg). These data suggest an inhibitory effect of the metabolism of glucose on the release of glucagon. In addition, the action of insulin on the A cell may be mediated by its effect on glucose metabolism within the A cell.

Key words

Glucose insulin glucagon glucose metabolism A cell 2-deoxyglucose subtotal pancreatectomy ducks 

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Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • F. Laurent
    • 1
  • R. Gross
    • 1
  • M. Lakili
    • 1
  • P. Mialhe
    • 1
  1. 1.Institut de Physiologie et Chimie BiologiqueStrasbourgFrance

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