Controlling diabetes by chromium complexes: The role of the ligands

• The roles of different chromium complexes on biological activities are discussed;
• Chromium complex promotes insulin activity via activating Akt and/or AMPK pathways.
• Toxicities of these chromium complexes are analyzed.
• Their potential clinical applications are summarized.

Diabetes, particularly type II diabetes, is a severe disease condition which affects human health worldwide, with a dramatically increasing trend in Asian countries including China. Currently, no efficient drugs other than those with observable side effects are available. Chromium complexes, with the most known representative chromium picolinate, have been listed as one of most attractive health supplements to attenuate this disease condition in western countries. Recent efforts have been made to develop new chromium complexes with novel ligands. Although fair amounts of reviews have been published to emphasize the biological activity, preclinical and clinical information of chromium picolinate, this mini-review is trying to cover the entire picture of updated research efforts on various chromium complexes highlighting the role of ligands. Chromium phenylalanine sensitizes insulin cell signaling pathway via the activation of phosphorylation of Akt (protein kinase B (PKB)) and/or AMPK (AMP-activated protein kinase). The biological activities, toxicity, pharmacological features and clinical implications, including the effect of anti-oxidative capacities, protective effect on obese-induced heart dysfunction, and efficacy and safety of chromium supplementation in diabetes are discussed as well.

Chromium complex sensitizes insulin cell signaling pathway via activation of phosphorylation of Akt, promoting glucose uptake and increasing the efficiency of insulin.Figure optionsDownload as PowerPoint slide