Protective Effects of Long Term Administration of Zinc on Bone Metabolism Parameters in Male Wistar Rats Treated with Cadmium

Background: violent poisoning by cadmium in human is created through drinks or meals which have packed in the metallic tins withcadmiumplating. thesymptomsof variation in the mineral metabolism of bones are observed and different conditionsmaybe appeared. the toxic (poisonous) effect due to cadmium can be neutralized by intervening zinc. this study has been designed to investigate the protective effects of zinc for reducing the poisonous effects due to cadmium on the metabolism in the parameters related to the bone in rat. methods: in this experimental study, 48 male rats of wistar species were distributed in eight experimental groups and tested in the investigative lab of falavarjan university. these groups were received 0.5 cc physiological serum, 0.5 mg/kg zinc, 0.5, 1, 2 mg/kg cadmium respectively and some groups were included in those were taken all there cadmium and zinc concentrations synchronously. blood samples were taken in a 60 days period and those factors related to the bone metabolism were measured. the data were analyzed by 2-anovaways, complementary tests through software spss 16. results: the results showed that 0.5, 1, 2 mg/kg doses cadmium chloride caused to increase alkaline phosphatase, calcium, phosphorus, magnesium and decrease albumin as compared with control group. also, synchronous usage of all threecadmiumchloride concentrations with zinc cause to decrease alkaline phosphatase, calcium, phosphorus, magnesium and increase albumin concentration. in a word, the other bone parameters have been significant in different cadmium and zinc doses (p < 0.05). conclusions: findings showed that zinc can play a protective role on the metabolism parameters related to bone against to poisoning caused by cadmium.