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Parathyroid hormone-related peptide: expression in prostate cancer bone metastases

Prostate Cancer and Prostatic Diseases volume 5, pages 59–62 (2002)Cite this article

Abstract

Parathyroid hormone-related peptide (PTHrP) is a regulatory protein associated with cell growth in non-osseous tissues and with osteoclast stimulation in bone. It has been implicated in the pathogenesis of bone metastases, particularly in breast carcinoma. PTHrP is widely expressed in primary prostate cancers, but there are few reports of its expression in prostatic metastases. The aim of this study was to examine the expression of PTHrP in bone metastases from patients with untreated adenocarcinoma of the prostate. Ten bone biopsies containing metastatic deposits of untreated prostatic cancer were identified. These were immunohistochemically stained for PTHrP using a murine monoclonal antibody (PTHLP[Ab1]) and the streptavidin–biotin complex technique. Intensity of staining for PTHrP was graded by two observers. In total, PTHrP expression was positive in 5/10 specimens. This was graded as moderate in four and weak in one. In those specimens with positive staining, the expression varied between cells. There was no obvious association between expression of PTHrP and tumour differentiation. PTHrP is expressed in prostatic bone metastases and may have a role in their pathogenesis and pathophysiology. However, expression is not universal.

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Acknowledgements

This work was supported by the Prostate Research Campaign, UK.

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Authors and Affiliations

  1. Christie and Hope Hospitals, Manchester, UK

    A A G Bryden & N W Clarke

  2. Manchester Royal Infirmary, UK

    S Islam

  3. Osteoarticular Pathology, University of Manchester, UK

    A J Freemont

  4. Christie Hospital, Manchester, UK

    J H Shanks

  5. University Hospital of South Manchester, UK

    N J R George

Authors
  1. A A G Bryden
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  2. S Islam
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  3. A J Freemont
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  4. J H Shanks
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  5. N J R George
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  6. N W Clarke
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Correspondence to A A G Bryden.

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Bryden, A., Islam, S., Freemont, A. et al. Parathyroid hormone-related peptide: expression in prostate cancer bone metastases. Prostate Cancer Prostatic Dis 5, 59–62 (2002). https://doi.org/10.1038/sj.pcan.4500553

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