Abstract
The insulin-like effects of various vanadium compounds (orthovanadate, vanadyl and peroxides of vanadate) on rates of glucose oxidation, lactate formation and glycogen synthesis were measured in isolated incubated epitrochlearis (mainly type 11 fibres) and soleus (mainly type I fibres) muscle preparations. There was a small stimulation of the rate of glucose utilisation in soleus muscle preparations in vitro by orthovanadate (1 mM). Orthovanadate or vanadyl, at 1 mM, had little effect on the rates of lactate formation or glycogen synthesis in isolated incubated epitrochlearis muscle preparations. In contrast, peroxides of vanadate (peroxovanadates, at 1 mM) significantly stimulated glucose utilisation in both soleus and epitrochlearis muscle preparations in vitro. The stimulation of the rate of glycogen synthesis was associated with an increase in the percentage of glycogen synthase in the I (or a) form. Peroxovanadates were administered in the drinking water to rats made insulin deficient by streptozotocin treatment. There was no decrease in the elevated level of blood glucose over an 8 day administration period. (Mol Cell Biochem 109: 157–162, 1992)
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Foot, E., Bliss, T., Fernandes, L.C. et al. The effects of orthovanadate, vanadyl and peroxides of vanadate on glucose metabolism in skeletal muscle preparations in vitro . Mol Cell Biochem 109, 157–162 (1992). https://doi.org/10.1007/BF00229770
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DOI: https://doi.org/10.1007/BF00229770