Objective To explore the effect of thyroid hormone on bone metabolism.Methods The thyroid in the rabbits had been cut off and the physics and histology of the bone in the rabbits were observed.The therapeutic effect of exterofection thyroid hormone was also observed.Results The lacking or reducing of thyroid hormone could lead to osteoporosis.The substitutive treatment of T_4 could partially inhibit the oesteopenia.Conclusion When the T_3 level equals to the level of T_4,the oesteopenia of the rabbits with thyroid being cut off may be caused by the lack of calcitonin.
Result Analysis
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