Milk and blood levels of silicon and selenium status in bovine mastitis |
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| Authors: | J Parantainen E Tenhunen R Kangasniemi S Sankari F Atroshi |
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| Institution: | (1) Research laboratories, Medica Pharmaceutical Co. Ltd, P.O.Box 325, 00101 Helsinki 10, Finland;(2) Research Center, Neste Oy, 06850 Kullo, Finland;(3) Institute of Veterinary Medicine, University of Helsinki, Helsinki 71, Finland;(4) Department of Biochemistry, College of Veterinary Medicine, Helsinki 55, Finland;(5) Department of Pharmacology and Toxicology, College of Veterinary Medicine, P.O.Box 6, 00551 Helsinki, Finland |
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| Abstract: | Milk and blood levels of silicon, selenium and the selenoenzyme glutathione peroxidase (GSH-Px) were measured in 20 healthy and 21 mastitic cows. In milk samples from healthy quarters the mean silicon concentration was 0.81 and in affected ones 0.39 ppm. In serum the mean silicon values were 1.63 and 1.02 ppm respectively. The selenium status was not altered but the level of erythrocyte GSH-Px was lowered in mastitic animals. Silicon is known to have marked effects on free radical formation, lipid peroxidation and macrophage activity. Its possible role in infection and inflammation is evaluated. Some of the functions of silicon may resemble those of selenium. The possibility of lowered levels of silicon and of the selenoenzyme in mastitis calls for experimentation with dietary or pharmaceutical supplementation of these trace elements. |
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