PMID: 16619575Apr 20, 2006Paper

Enhanced expression of heat shock protein 27 following neoadjuvant hormonal therapy is associated with poor clinical outcome in patients undergoing radical prostatectomy for prostate cancer

Anticancer Research
Hideaki MiyakeMasato Fujisawa

Abstract

The objectives of this study were to characterize changes in the expression of heat shock protein 27 (HSP27) in prostate cancer before and after androgen withdrawal therapy and to assess the prognostic significance of HSP27 expression in patients undergoing radical prostatectomy (RP) following neoadjuvant hormonal therapy (NHT). This study included 97 patients with clinically localized prostate cancer who received NHT followed by RP. Paired needle biopsy and corresponding RP specimens obtained from these patients were analyzed for expression of the HSP27 protein by immunohistochemical staining. These findings were evaluated with respect to several clinicopathological factors. HSP27 expression in the RP specimens following NHT was significantly up-regulated compared with that in the corresponding needle biopsy specimens. The expression level of HSP27 in the biopsy specimens was significantly associated with the biopsy Gleason score, but not with other factors available before RP. HSP27 expression in the RP specimens was significantly correlated with the pre-operative value of serum prostate-specific antigen and pathological stage, but not with other pathological factors. Biochemical recurrence-free survival in patients with stro...Continue Reading

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