Abstract
The expression of E-, N- and P-cadherin, α-, β- and γ-catenin, and actin was studied by immunohistochemistry, ELISA, and Western blot analysis in normal prostates, and in the prostates of men with benign prostatic hyperplasia and men with prostatic carcinoma, in order to evaluate their possible role in the pathogenesis of these diseases. Present results reveal that the immunophenotype of hyperplastic prostates differs from those of both normal and carcinomatous prostates in the intracellular distribution (observed by immunohistochemistry) and the intensity (measured by ELISA) of immunoreactions to cadherins, catenins, and actin. Hyperplastic prostates differ form normal prostates in the weaker immunoreaction to the three cadherin types, the two catenins, and actin, as well as in the intracellular distribution of P-cadherin, β- and γ-catenin, and actin. Differences between benign prostatic hyperplasia and prostatic carcinoma are less marked because hyperplastic prostates differ from carcinomatous prostates only in the weaker immunoreactions to P-cadherin, and α-catenin. The most remarkable findings in this study were: (1) α-catenin production was elevated in prostatic carcinoma in comparison with benign prostatic hyperplasia and normal prostate; and (2) P-cadherin expression in benign prostatic hyperplasia is reduced with regard to those of normal and carcinomatous prostates. It may be concluded that a decreased immunoreaction to cadherins, catenins, and actin, as well as changes in the intracellular distribution of actin in prostatic cells are not necessarily suggestive of malignancy, because these alterations are also present in BPH, and thus, the loss of cadherin–catenin-mediated adhesion alone is not sufficient to establish an invasive phenotype.
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Arenas, M.I., Romo, E., Royuela, M. et al. E-, N- And P-cadherin, and α-, β- and γ-catenin Protein Expression in Normal, Hyperplastic and Carcinomatous Human Prostate. Histochem J 32, 659–667 (2000). https://doi.org/10.1023/A:1004111331752
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DOI: https://doi.org/10.1023/A:1004111331752