PMID- 26696633 OWN - NLM STAT- MEDLINE DCOM- 20160428 LR - 20221109 IS - 1939-327X (Electronic) IS - 0012-1797 (Linking) VI - 65 IP - 1 DP - 2016 Jan TI - Hypomagnesemia in Type 2 Diabetes: A Vicious Circle? PG - 3-13 LID - 10.2337/db15-1028 [doi] AB - Over the past decades, hypomagnesemia (serum Mg(2+) <0.7 mmol/L) has been strongly associated with type 2 diabetes mellitus (T2DM). Patients with hypomagnesemia show a more rapid disease progression and have an increased risk for diabetes complications. Clinical studies demonstrate that T2DM patients with hypomagnesemia have reduced pancreatic beta-cell activity and are more insulin resistant. Moreover, dietary Mg(2+) supplementation for patients with T2DM improves glucose metabolism and insulin sensitivity. Intracellular Mg(2+) regulates glucokinase, KATP channels, and L-type Ca(2+) channels in pancreatic beta-cells, preceding insulin secretion. Moreover, insulin receptor autophosphorylation is dependent on intracellular Mg(2+) concentrations, making Mg(2+) a direct factor in the development of insulin resistance. Conversely, insulin is an important regulator of Mg(2+) homeostasis. In the kidney, insulin activates the renal Mg(2+) channel transient receptor potential melastatin type 6 that determines the final urinary Mg(2+) excretion. Consequently, patients with T2DM and hypomagnesemia enter a vicious circle in which hypomagnesemia causes insulin resistance and insulin resistance reduces serum Mg(2+) concentrations. This Perspective provides a systematic overview of the molecular mechanisms underlying the effects of Mg(2+) on insulin secretion and insulin signaling. In addition to providing a review of current knowledge, we provide novel directions for future research and identify previously neglected contributors to hypomagnesemia in T2DM. CI - (c) 2016 by the American Diabetes Association. Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. FAU - Gommers, Lisanne M M AU - Gommers LM AD - Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands. FAU - Hoenderop, Joost G J AU - Hoenderop JG AD - Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands. FAU - Bindels, Rene J M AU - Bindels RJ AD - Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands. FAU - de Baaij, Jeroen H F AU - de Baaij JH AD - Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, U.K. jeroen.debaaij@radboudumc.nl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Diabetes JT - Diabetes JID - 0372763 RN - 0 (Blood Glucose) RN - 0 (Calcium Channels, L-Type) RN - 0 (Insulin) RN - 0 (KATP Channels) RN - 0 (Kcnj10 (channel)) RN - 0 (Potassium Channels, Inwardly Rectifying) RN - 0 (Sodium Chloride Symporters) RN - 9005-79-2 (Glycogen) RN - EC 2.7.1.2 (Glucokinase) RN - EC 7.2.2.13 (Sodium-Potassium-Exchanging ATPase) RN - I38ZP9992A (Magnesium) SB - IM MH - Blood Glucose/metabolism MH - Calcium Channels, L-Type/metabolism MH - Diabetes Mellitus, Type 2/complications/*metabolism MH - Dietary Supplements MH - Disease Progression MH - Glucokinase/metabolism MH - Glycogen/biosynthesis MH - Glycolysis MH - Humans MH - Inflammation MH - Insulin/metabolism MH - Insulin Resistance MH - Insulin Secretion MH - Insulin-Secreting Cells/metabolism MH - KATP Channels/metabolism MH - Liver/metabolism MH - Magnesium/*metabolism/therapeutic use MH - Magnesium Deficiency/drug therapy/*metabolism MH - Obesity/metabolism MH - Potassium Channels, Inwardly Rectifying/metabolism MH - Sodium Chloride Symporters/metabolism MH - Sodium-Potassium-Exchanging ATPase/metabolism MH - Water-Electrolyte Imbalance/drug therapy/*metabolism EDAT- 2015/12/24 06:00 MHDA- 2016/04/29 06:00 CRDT- 2015/12/24 06:00 PHST- 2015/12/24 06:00 [entrez] PHST- 2015/12/24 06:00 [pubmed] PHST- 2016/04/29 06:00 [medline] AID - 65/1/3 [pii] AID - 10.2337/db15-1028 [doi] PST - ppublish SO - Diabetes. 2016 Jan;65(1):3-13. doi: 10.2337/db15-1028.