Abstract
Our previous report indicated that magnesium (Mg) deficiency increased molybdenum (Mo) concentration in the rat liver, suggesting the possibility that Mg deficiency affects Mo metabolism. Growing male rats were given a control diet or a Mg-deficient diet for 4 weeks. Urine and feces were collected during the second and fourth weeks of the feeding trial. The liver, kidney, spleen, skeletal muscle, and blood were collected at the end of the feeding trial. Mg deficiency did not affect the apparent absorption of Mo, but it reduced urinary excretion of Mo. The retention of Mo tended to be higher in the Mg-deficient group than in the control group. Hepatic Mo concentration was higher in the Mg-deficient group than in the control group, but Mg deficiency did not affect Mo concentration in other tissues and plasma. Mg deficiency downregulated the mRNA expression of Mo transporter 2 (MOT2) in the liver, but not in the kidney. These results suggest that Mg deficiency decreases urinary Mo excretion, which is too slight to affect plasma Mo concentration, and that Mg deficiency selectively disturbs the homeostatic mechanism of Mo in the liver, which is not related to the mRNA expression of MOT2 in the liver.
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References
Rajagopalan KV (1988) Molybdenum: an essential trace element in human nutrition. Annu Rev Nutr 8:401–427
Jeter MA, Davis GK (1954) The effect of dietary molybdenum upon growth, hemoglobin, reproduction, and lactation of rats. J Nutr 54:215–220
Cox DH, Davis GK, Shirley RL, Jack FH (1960) Influence of excess dietary molybdenum on rat and calf liver and heart enzymes. J Nutr 70:63–68
Ostrom CA, Reen RV, Miller CW (1961) Changes in the connective tissue of rats fed toxic diets containing molybdenum salts. J Dent Res 40:520–528
Walravens PA, Moureeraso R, Solomons CC, Chapell WR, Bentley G (1979) Biochemical abnormalities in workers exposed to molybdenum dust. Arch Environ Health 34:302–308
Bandyopadhyay SK, Chatterjee K, Tiwari RK, Mitra A, Banerjee A, Ghosh KK, Chatterjee GC (1981) Biochemical studies on molybdenum toxicity in rats: effects of high protein feeding. Int J Vitam Nutr Res 51:401–409
Johnson HL, Miller RF (1963) Possible mechanisms for dietary molybdenum toxicity in the rat. J Nutr 81:271–278
Bibr B, Lener J (1973) Excretion of molybdenum by experimental animals. Physiol Bohemoslov 22:167–178
Neilands JB, Strong FM, Elvehjem CA (1948) Molybdenum in the nutrition of the rat. J Biol Chem 172:431–439
Novotny JA, Turnlund JR (2007) Molybdenum intake influences molybdenum kinetics in men. J Nutr 137:37–42
Turnlund JR, Keyes WR, Peiffer GL, Chiang G (1995) Molybdenum absorption, excretion, and retention studied with stable isotopes in young men at five intakes of dietary molybdenum. Am J Clin Nutr 62:790–796
Wang X, Oberleas D, Yang MT, Yang SP (1992) Molybdenum requirement of female rats. J Nutr 122:1036–1041
Yoshihara K, Fukunaga K, Yoshida M (2007) Effect of dietary molybdenum level on tissue and serum molybdenum concentrations in rats. Trace Nutrients Res 24:120–123
Tejada-Jiménez M, Galván A, Fernández E (2011) Algae and humans share a molybdate transporter. Proc Natl Acad Sci USA 108:6420–6425
Kim KH, Ishizaki N, Iguchi E, Funaba M, Matsui T (2011) Effect of magnesium deficiency on various mineral concentrations in rat liver. Biol Trace Elem Res 144:865–871
Reeves PG (1997) Components of the AIN-93 diets as improvements in the AIN-76A diet. J Nutr 127:838S–841S
Bonsnes RW, Taussky HH (1945) On the colorimetric determination of creatinine by the Jaffé reaction. J Biol Chem 158:581–591
Ishizaki N, Kotani M, Funaba M, Matsui T (2011) Hepcidin expression in the liver of rats fed a magnesium-deficient diet. Br J Nutr 106:1169–1172
Smetana S, Khalef S, Nitsan Z, Hurwitz N, Miskin A, Bar-Khayim Y, Birk Y (1988) Enhanced urinary trypsin inhibitory activity in gentamicin-induced nephrotoxicity in rats. Clin Chim Acta 176:333–342
Kimura M, Itokawa Y (1989) Inefficient utilization of iron and minerals in magnesium deficient rats. In: Itokawa Y, Durlach J (eds) Magnesium in health and disease. John Libbey, London, pp 95–102
Sanchez-Morito N, Planells E, Aranda P, Llopis J (2000) Influence of magnesium deficiency on the bioavailability and tissue distribution of iron in the rat. J Nutr Biochem 11:103–108
Vormann J, Günther T, Höllriegl V, Schümann K (1995) Effect of various degrees and duration of magnesium deficiency on lipid peroxidation and mineral metabolism in rats. J Nutr Biochem 6:681–688
Jimenez A, Planells E, Aranda P, Sanchez-Vinas M, Llopis J (1997) Changes in bioavailability and tissue distribution of copper caused by magnesium deficiency in rats. J Agric Food Chem 45:4023–4037
Ginn HE, Shanbour LL (1966) Phosphaturia in magnesium-deficient rats. Am J Physiol 212:1347–1350
Turnlund JR, Keyes WR (2004) Plasma molybdenum reflects dietary molybdenum intake. J Nutr Biochem 15:90–95
Acknowledgments
The authors thank Emeritus Professor Yoshinori Itokawa and former Associate Professor Mieko Kimura of the Division of Social and Preventive Medicine, Graduate School of Medicine, Kyoto University for giving us a chance to use ICP-MS.
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Kim, K.H., Funaba, M., Yoshida, M. et al. The Effects of Magnesium Deficiency on Molybdenum Metabolism in Rats. Biol Trace Elem Res 151, 100–104 (2013). https://doi.org/10.1007/s12011-012-9541-3
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DOI: https://doi.org/10.1007/s12011-012-9541-3