Prostate Cancer and Prostatic Diseases (PROSTATE CANCER P D )

Publisher: Nature Publishing Group


Covers current developments relating to all aspects of prostate cancer research.

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    Prostate cancer and prostatic diseases (Online)
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Nature Publishing Group

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Publications in this journal

  • Prostate Cancer and Prostatic Diseases 11/2014; Accepted for publication.
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    ABSTRACT: BACKGROUND:To assess the relationship between androgen deprivation therapy (ADT) exposure and self-reported bone complications among men in a population-based cohort of prostate cancer survivors followed for 15 years after diagnosis.METHODS:The Prostate Cancer Outcomes Study enrolled 3533 patients diagnosed with prostate cancer between 1994 and 1995. This analysis included participants with non-metastatic disease at the time of diagnosis who completed 15-year follow-up surveys to report development of fracture, and use of bone-related medications. The relationship between ADT duration and bone complications was assessed using multivariable logistic regression models.RESULTS:Among 961 surviving men, 157 (16.3%) received prolonged ADT (>1 year), 120 (12.5%) received short-term ADT (⩽1 year) and 684 (71.2%) did not receive ADT. Men receiving prolonged ADT had higher odds of fracture (OR 2.5; 95% confidence interval (CI): 1.1-5.7), bone mineral density testing (OR 5.9; 95% CI: 3.0-12) and bone medication use (OR 4.3; 95% CI: 2.3-8.0) than untreated men. Men receiving short-term ADT reported rates of fracture similar to untreated men. Half of men treated with prolonged ADT reported bone medication use.CONCLUSIONS:In this population-based cohort study with long-term follow-up, prolonged ADT use was associated with substantial risks of fracture, whereas short-term use was not. This information should be considered when weighing the advantages and disadvantages of ADT in men with prostate cancer.Prostate Cancer and Prostatic Disease advance online publication, 19 August 2014; doi:10.1038/pcan.2014.31.
    Prostate Cancer and Prostatic Diseases 08/2014;
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    ABSTRACT: Background:Understanding the mechanisms driving disease progression is fundamental to identifying new therapeutic targets for the treatment of men with metastatic castration-resistant prostate cancer (mCRPC). Owing to the prevalence of bone metastases in mCRPC, obtaining sufficient tumor tissue for analysis has historically been a challenge. In this exploratory analysis, we evaluated imaging, procedural and clinical variables associated with tumor yield on image-guided bone biopsy in men with mCRPC.Methods:Clinical data were collected prospectively from men with mCRPC enrolled on a phase II trial with serial metastasis biopsies performed according to standard clinical protocol. Imaging was retrospectively reviewed. We evaluated the percent positive biopsy cores (PPC), calculated as the number of positive cores divided by the total number of cores collected per biopsy.Results:Twenty-nine men had 39 bone biopsies. Seventy-seven percent of bone biopsies had at least one positive biopsy core. We determined that lesion size and distance from the skin to the lesion edge correlated with tumor yield on biopsy (median PPC 75% versus 42% for lesions >8.8 cm(3) versus ⩽8.8 cm(3), respectively, P=0.05; median PPC 33% versus 71% for distance ⩾6.1 versus <6.1 cm, respectively, P=0.02). There was a trend towards increased tumor yield in patients with increased uptake on radionuclide bone scan, higher calcium levels and shorter duration of osteoclast-targeting therapy, although this was not statistically significant. Ten men had 14 soft tissue biopsies. All soft tissue biopsies had at least one positive biopsy core.Conclusions:This exploratory analysis suggests that there are imaging, procedural and clinical variables that have an impact on image-guided bone biopsy yield. In order to maximize harvest of prostate cancer tissue, we have incorporated a prospective analysis of the metrics described here as part of a multi-institutional project aiming to use the molecular characterization of mCRPC tumors to direct individual therapy.Prostate Cancer and Prostatic Disease advance online publication, 5 August 2014; doi:10.1038/pcan.2014.28.
    Prostate Cancer and Prostatic Diseases 08/2014;
  • Article: Belhocine T
    Prostate Cancer and Prostatic Diseases 03/2012; 15(1-PMID: 21844889):45-55.
  • Prostate Cancer and Prostatic Diseases 01/2010; 13:228.
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    ABSTRACT: Syndecans are a four-member family of transmembrane heparan sulphate proteoglycans that have different functions in cell signalling, adhesion, cytoskeleton organization, migration, proliferation, and angiogenesis. Several studies investigated the role of syndecan-2 (SDC2) in different carcinomas; however, only one being focused on SDC2 in prostate cancer. SDC2 expression and relationship with established prognostic features were assessed in a cohort of 86 patients treated with radical prostatectomy for clinically localized prostate adenocarcinoma. SDC2 expression was present in the majority of prostate cancers and absent in only 11.6% of cases. SDC2 expression was also recorded in cells of prostatic intraepithelial neoplasia, whereas normal prostatic epithelial tissue and stroma did not express SDC2. SDC2 overexpression in prostate cancer was significantly associated with established features indicative of worse prognosis such as higher preoperative PSA (P=0.011), higher Gleason score (P<0.001), positive surgical margins (P<0.003), and extraprostatic extension of disease (P<0.003). Moreover, expression of SDC2 was also associated with biochemical disease progression on univariate analysis (P<0.001). Study results supported the potential role of SDC2 in prostatic carcinogenesis and cancer progression. Moreover, SDC2 could serve as an additional prognostic marker that might help in further stratifying the risk of disease progression in patients with prostate cancer.Keywords: syndecan-2; prognosis
    Prostate Cancer and Prostatic Diseases 09/2009; 13(1):78-82.
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    ABSTRACT: Anterior gradient-2 (AGR2) expression was examined in a series of prostate cell lines and in an archival set of prostate tissues. The relative levels of AGR2 expression in the malignant cell lines PC-3 and PC-3M were, respectively, 5.3+/-0.1 and 3.8+/-0.2 times that detected in the benign cell line PNT-2. Immunohistochemical staining in 106 cases showed that amongst seven normal cases, one (14.3%) was unstained, five (71.4%) stained weakly positive and one (14.3%) stained moderately positive. Amongst 34 benign prostate hyperplastic (BPH) cases, 12 (35.3%) were unstained, 18 (52.9%) stained weakly positive and four (11.8%) stained moderately positive. Amongst 65 carcinomas, three (4.6%) were unstained, 14 (21.5%) stained weakly positive, 19 (29.2%) stained moderately positive and 29 (44.9%) stained strongly positive. AGR2 expression in carcinomas was significantly higher than that in BPH (chi(2)-test, P<0.001). Kaplan-Meier survival analysis showed that increased AGR2 expression was significantly (log rank test, P=0.007) associated with reduced patient-survival time. Increased joint Gleason score (GS) was significantly (log rank test, P=0.001) associated with poor patient survival. However, neither prostate specific antigen (PSA) level, nor androgen receptor (AR) index, was significantly associated with patient-survival time. Increased AGR2 expression was significantly correlated with high GS (two-sided Fisher's exact test, P<0.001) and PSA levels (Mann-Whitney U-test, P=0.047), but not significantly related to the level of AR (Mann-Whitney U-test, P=0.286). These results suggest that increased AGR2 expression is a valuable prognostic factor to predict the clinical outcome of the prostate cancer patients.
    Prostate Cancer and Prostatic Diseases 04/2007; 10(3):293-300.
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    ABSTRACT: Effective treatment of benign prostatic hyperplasia (BPH) involves not only a reduction of symptom scores and the prevention of serious complications, but also an improvement in overall patient's quality of life and cost effectiveness. There is a paucity of data regarding cost effectiveness when the pharmacologic, the minimally invasive and the surgical treatments of BPH are compared. The potassium-titanyl-phosphate laser prostatectomy seems to be a safe and effective treatment option both in the short and in the long-term run. Preliminary results indicate that photoselective vaporization of the prostate is also a cost-effective method when compared to different minimally invasive treatments and to the transurethral prostatectomy.Keywords: BPH, KTP laser prostatectomy, cost, PVP
    Prostate Cancer and Prostatic Diseases 02/2007;
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    Prostate Cancer and Prostatic Diseases 02/2007;
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    ABSTRACT: Prostatic crystalloids are intraluminal eosinophilic structures with variable size and shape. Their presence has been described in conjunction with the occurrence of prostatic adenocarcinoma (pCA). We herein report the association of crystalloids and pCA in a prospective trial utilizing an extended multi-site transrectal ultrasound-guided (TRUS) prostate biopsy protocol. Three hundred and forty-four consecutive patients were prospectively enrolled at the Dallas Veterans Administration Hospital from November 2002 to September 2003. Indications for biopsy included a prostate-specific antigen (PSA) > or =4 ng/ml and/or abnormal digital rectal exam. A single pathologist evaluated all biopsy cores and documented the presence or absence of significant histopathologic features. Univariate and multivariate logistic regression analysis were applied to test the association of these features with the presence of pCA on concurrent biopsy. Median number of core biopsies per patient was 12 (range 3-36). Overall cancer detection rate was 42.7%. pCA was diagnosed in 66 (81.5%) of 81 patients with crystalloids, 70 (69.3%) of 101 patients with high-grade prostatic intraepithelial neoplasia (HGPIN), and 32 (84.2%) of 38 patients with both HGPIN and crystalloids on biopsy. Multivariate analysis identified crystalloids (RR 4.53, 95% CI 2.30-8.88) and HGPIN (RR 3.20, 95% CI 1.84-5.57) as independent predictors of the presence of cancer on concurrent biopsy (P<0.001). In this prospective analysis, crystalloids were significantly associated with pCA on concurrent biopsy and more predictive of the presence of pCA than HGPIN. These findings suggest that the presence of crystalloids alone or in combination with HGPIN in prostate biopsies may be a more compelling indication for repeat biopsy than HGPIN alone.
    Prostate Cancer and Prostatic Diseases 02/2007; 10(3):279-82.