Objective To study the effects of parathyroid hormone (PTH) on the expression of membrane-type matrix metalloproteinase-1 (MT1-MMP) in human osteoblast-like cell line MG-63 and to understand the mechanism by which PTH exerts on bone.

• 目的 探讨甲状旁腺激素 (PTH)对人成骨样MG 6 3细胞膜型基质金属蛋白酶 1(MT1 MMP)表达的影响及调节骨代谢作用的机制。