Development of skeletal metastases - PubMed (original) (raw)
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- PMID: 7634617
Development of skeletal metastases
S Kitazawa et al. Clin Orthop Relat Res. 1995 Mar.
Abstract
Skeletal metastases result from a series of complex steps including activation of osteoclasts and interaction between adhesion molecules on cancer cells and bone matrices. Researchers of this study used pathologic specimens of breast cancer cells from primary and metastatic sites obtained at surgery or autopsy to demonstrate the expression of parathyroid hormone-related protein by immunohistochemistry and beta 3 integrin by in situ hybridization to clarify the role of tumor-derived osteoclast activating factors and adhesion molecules in the development of skeletal metastases. The results of this retrospective study showed a significant difference of parathyroid hormone-related protein and beta 3 integrin expression in cases with and without skeletal metastases. These expressions were enhanced or clonally selected or both in skeletal metastatic sites. Because activation of osteoclastic bone resorption by parathyroid hormone-related protein could facilitate tumor cells to attach to the eroded bone surface through cell adhesion molecules, these 2 factors could make it easier for tumor cells to grow in bone.
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