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Publication Detail
Effects of adenosine deaminase on the sensitivity of glucose transport, glycolysis and glycogen synthesis to insulin in muscles of the rat.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Leighton B, Lozeman FJ, Vlachonikolis IG, Challiss RA, Pitcher JA, Newsholme EA
  • Publication date:
  • Pagination:
    23, 27
  • Journal:
    Int J Biochem
  • Volume:
  • Issue:
  • Status:
  • Country:
  • Print ISSN:
  • Language:
  • Keywords:
    3-O-Methylglucose, Adenosine Deaminase, Animals, Biological Transport, Active, Diaphragm, Glucose, Glycogen, Glycolysis, In Vitro Techniques, Insulin, Kinetics, Male, Methylglucosides, Muscles, Nucleoside Deaminases, Rats, Rats, Inbred Strains
1. Soleus, extensor digitorum longus (EDL) or hemi-diaphragm muscles of the rat were incubated in the presence of insulin and rates of the processes of glycolysis and glycogen synthesis were measured. 2. The concentrations of insulin required to cause half-maximal stimulation of glycolysis in both soleus and EDL preparations were significantly decreased by the presence of adenosine deaminase in the medium. 3. Adenosine deaminase increased the sensitivity of the process of hexose transport to insulin (in an identical manner to the change in sensitivity of glycolysis) in the EDL preparation. 4. None of the adenosine mediated effects on insulin-stimulated rates of glycolysis were observed in the hemi-diaphragm preparation or on the rates of glycogen synthesis in any of the three muscle preparations. 5. Therefore, changes in the adenosine system in skeletal muscle influence insulin sensitivity regardless of fibre type composition of the muscle.
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