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Magnes Res. 2013 Apr-Jun;26(2):74-82. doi: 10.1684/mrh.2013.0342.

Aggravation by vanadium of magnesium deficiency in STZ-induced diabetic rats.

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Biomedical Research Unit, Mexican Social Security Institute, Victoria de Durango, Mexico.


This study examined changes in the metabolism of magnesium (Mg), and related serum parameters, following treatment with vanadium (V) in streptozotocin-diabetic rats. Over a period of five weeks, four groups were examined: control, diabetic, diabetic-treated with 1 mg V/day or 3 mg V/day. The V was supplied in drinking water as bis(maltolato)oxovanadium(IV). The Mg levels were measured in food, faeces, urine, serum, muscle, kidney, liver, spleen, heart and femur. Albumin, uric acid, urea, total-cholesterol, LDL-cholesterol, triglycerides, aspartate-aminotransferase and alkaline-phosphatase were determined in serum. In the diabetic group, Mg retained and Mg content in serum and femur decreased, while levels of uric acid, urea, total-cholesterol, LDL-cholesterol, triglycerides and alkaline-phosphatase and aspartate-aminotransferase activity increased compared with control rats. In the diabetic group treated with 1 mg V/day, Mg retained, serum levels of Mg, urea and triglycerides, and alkaline-phosphatase activity remained unchanged, while levels of uric acid, total-cholesterol and LDL-cholesterol increased and the Mg content in femur and aspartate-aminotransferase activity decreased compared with the diabetic untreated group. In the diabetic rats treated with 3 mg V/day, food intake and glycaemia were normal. In this group, Mg content in serum, kidney and femur, levels of urea and aspartate-aminotransferase and alkaline-phosphatase activity decreased, whereas LDL-cholesterol increased, uric acid and total-cholesterol levels remained unchanged in comparison with untreated diabetic rats. In conclusion, although treatment with 3 mg V/day normalised the glycaemia, the hypomagnesaemia and tissue depletion of Mg seen in the diabetic rats, caused by the treatment with V, could have partially contributed to the fact that V did not normalise other serum parameters altered by the diabetes.


blood parameters; diabetes; interactions; magnesium; vanadium

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