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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2019 ; 9 (ä): ä Nephropedia Template TP
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Diabetes-induced hypomagnesemia is not modulated by metformin treatment in mice #MMPMID30742025
Kurstjens S; Bouras H; Overmars-Bos C; Kebieche M; Bindels RJM; Hoenderop JGJ; de Baaij JHF
Sci Rep 2019[]; 9 (ä): ä PMID30742025show ga
Approximately 30% of patients with type 2 diabetes mellitus (T2D) have hypomagnesemia (blood magnesium (Mg2+) concentration <0.7?mmol/L). In T2D patients, treatment with metformin is associated with reduced blood Mg2+ levels. To investigate how T2D and metformin affect Mg2+ homeostasis db/m and db/db mice were treated with metformin or placebo. Mice were housed in metabolic cages to measure food and water intake, and to collect urine and feces. Serum and urinary Mg2+ concentrations were determined and mRNA expression of magnesiotropic genes was determined in kidney and distal colon using RT-qPCR. Db/db mice had significantly lower serum Mg2+ levels than db/m mice. Mild hypermagnesuria was observed in the db/db mice at two weeks, but not at four weeks. Metformin-treatment had no effect on the serum Mg2+ concentration and on the urinary Mg2+ excretion. Both in kidney and distal colon of db/db mice, there was a compensatory upregulation in the mRNA expression of magnesiotropic genes, such as transient receptor potential melastatin 6 (Trpm6), whereas metformin treatment did not affect gene expression levels. In conclusion, we show that T2D causes hypomagnesemia and that metformin treatment has no effect on Mg2+ homeostasis in mice.