Human parathyroid hormone‐related protein in ovarian small cell carcinoma. An immunohistochemical study

Xavier Matias‐Guiu, Jaime Prat, Robert H. Young, Charles C. Capen, Thomas J. Rosol, Ronald A. Delellis, Robert E. Scully

Research output: Contribution to journalArticleResearchpeer-review

69 Citations (Scopus)


Background. Small cell carcinomas (SCC) are the most common ovarian tumors associated with hypercalcemia. Parathyroid hormone‐related protein (PTHrp) is the most frequent cause of hypercalcemia of malignancy. Methods. The presence of PTHrp in SCC has been studied by immunohistochemistry in formalin fixed, paraffin embedded tissues. A polyclonal antibody against a synthetic peptide corresponding to the first 36‐N terminal amino acid residues of PTHrp was used. Normal dog skin, which is rich in PTHrp, was used as a positive control. Absorption tests using the synthetic peptide as antigen were done in all the cases. Results. Immunoreactivity for PTHrp was found in five of seven cases of SCC. The serum calcium levels were elevated in two of these cases, normal in two, and unknown in one. The two negative cases were associated with high serum calcium levels. Conclusion. The lack of correlation between immunoreactivity and serum calcium levels can be explained on the basis that immunohistochemistry is dependent on the peptide content of cells rather than on the capability for hormone production and/or release. The results suggest that PTHrp plays a role in the development of hypercalcemia in patients with SCC of the ovary. Copyright © 1994 American Cancer Society
Original languageEnglish
Pages (from-to)1878-1881
Issue number7
Publication statusPublished - 1 Jan 1994


  • hypercalcemia
  • immunohisto‐chemistry
  • ovary
  • parathyroid hormone‐related protein
  • small cell carcinoma


Dive into the research topics of 'Human parathyroid hormone‐related protein in ovarian small cell carcinoma. An immunohistochemical study'. Together they form a unique fingerprint.

Cite this