Abstract
The synthesis, characterization, anti-hyperglycemic activity, oxidative DNA damage capacity, and acute toxicity of chromium(III) malate complex [Cr2(LMA)3] were described. [Cr2(LMA)3] was synthesized in a single-step reaction by chelating chromium(III) with L-malic acid in aqueous solution. Based on elemental analysis, thermodynamic analysis, and spectroscopy studies, the molecular formula of [Cr2(LMA)3] was inferred as Cr2(C4H4O5)3·5H2O. Daily treatment with 2.85–17.10 mg/kg body mass of [Cr2(LMA)3] in alloxan-induced diabetic rats for 2 weeks indicated that low-molecular-weight organic chromium complex [Cr2(LMA)3] had better bioavailability and more beneficial influences on the improvement of controlling blood glucose, serum lipid, and liver glycogen levels compared with CrCl3·6H2O. [Cr2(LMA)3] did not cause oxidative DNA damage under physiologically relevant conditions. Acute toxicity studies revealed no-measurable toxicity of the [Cr2(LMA)3]. Collectively, these results suggest that [Cr2(LMA)3] may represent a novel, proper chromium supplement with potential therapeutic value to control blood glucose and serum lipid in diabetes.
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This work was supported financially by Specialized Research Fund for the Doctoral Program of Higher Education of China (20103227110004) and Graduate innovative projects in Jiangsu University (CX10B_019X).
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Wu, XY., Li, F., Xu, WD. et al. Anti-hyperglycemic Activity of Chromium(III) Malate Complex in Alloxan-Induced Diabetic Rats. Biol Trace Elem Res 143, 1031–1043 (2011). https://doi.org/10.1007/s12011-010-8916-6
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DOI: https://doi.org/10.1007/s12011-010-8916-6