Effects of Cadmium on BMP Induced Bone Formation

To demonstrate the direct effects of cadmium on activities of bone morphogenetic protein (BMP).a complex containing BMP and cadmium chloride(CdCl2)was implanted beneath the abdominal skin of young male Wistar rats.The activity of BMP was wtudied by observing the histological changes,and measuring the activity of alkaline phosphatase(ALP) and acid posphatase(ACP) and calcium content of the implants at different time points.Our results showed that during bone formation induced by BMP.cadmium inhibited the activities of osteoblasts and osteoclasts,and slowed the deposition of calcium.It is concluded that cadmium can directly affect biological activities of BMP directly.