Abstract
The effects of acute manganese (Mn) toxicity on tissue manganese concentrations and on plasma glucose levels were investigated in adult male Sprague-Dawley rats. Manganese injection in all tissues analyzed was reflected by a significant increase in Mn concentration that was transitory. Changes in the molecular localization of Mn in liver following injection include both increases in protein-bound Mn and low molecular weight Mn complexes. A rapid, dose-responsive rise in blood glucose followed Mn injection, whereas circulating insulin levels decreased after injection. These data show that acute changes in tissue Mn levels can have a pronounced effect on carbohydrate metabolism.
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Keen, C.L., Baly, D.L. & Lönnerdal, B. Metabolic effects of high doses of manganese in rats. Biol Trace Elem Res 6, 309–315 (1984). https://doi.org/10.1007/BF02989238
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DOI: https://doi.org/10.1007/BF02989238