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Stage 4 prostate cancer

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https://www.readbyqxmd.com/read/28546332/establishing-177-lu-psma-617-radioligand-therapy-in-a-syngeneic-model-of-murine-prostate-cancer
#1
Wolfgang P Fendler, Andreea D Stuparu, Susan Evans-Axelsson, Katharina Lückerath, Liu Wei, Woosuk Kim, Soumya Poddar, Jonathan Said, Caius G Radu, Matthias Eiber, Johannes Czernin, Roger Slavik, Ken Herrmann
Clinical (177)Lu-PSMA-617 radioligand therapy (RLT) is applied in advanced stage prostate cancer. However, to the best of our knowledge murine models to study the biological effects of various activity levels have not been established. AIM: To optimize specific and total activity for (177)Lu-PSMA-617 RLT in a syngeneic model of murine prostate cancer. Methods: 0.1x106 murine reconstituted, oncogene-driven prostate cancer cells (RM1), transduced to express human prostate-specific membrane antigen (PSMA), were injected into the left flank of C57Bl6 immunocompetent mice...
May 25, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28543830/weight-change-obesity-and-risk-of-prostate-cancer-progression-among-men-with-clinically-localized-prostate-cancer
#2
Barbra A Dickerman, Thomas U Ahearn, Edward Giovannucci, Meir J Stampfer, Paul L Nguyen, Lorelei A Mucci, Kathryn M Wilson
Obesity is associated with an increased risk of fatal prostate cancer. We aimed to elucidate the relevant timing and importance of obesity and weight change for prostate cancer progression. We identified 5,158 men diagnosed with localized prostate cancer (clinical stage T1/T2) from 1986-2012 in the Health Professionals Follow-up Study. Men were followed for biochemical recurrence and lethal prostate cancer (development of distant metastasis or prostate cancer-specific mortality) until 2012. Cox regression estimated hazard ratios (HRs) for body mass index (BMI) at age 21, BMI at diagnosis, "long-term" weight change from age 21 to diagnosis, and "short-term" weight change over spans of 4 and 8 years preceding diagnosis...
May 23, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28543179/genetic-ancestry-and-prostate-cancer-susceptibility-snps-in-puerto-rican-and-african-american-men
#3
Margarita Irizarry-Ramírez, Rick A Kittles, Xuemei Wang, Jeannette Salgado-Montilla, Graciela M Nogueras-González, Ricardo Sánchez-Ortiz, Lourdes Guerrios, Keila Rivera, Ebony Shah, Ina Prokhorova, Pamela Roberson, Patricia Troncoso, Curtis A Pettaway
BACKGROUND: The Puerto Rican (PR) population is a racially admixed population that has a high prostate cancer (PCa) mortality rate. We hypothesized in this pilot study that West African Ancestry (WAA) was associated with PCa in this heterogeneous (PR) population. METHODS: A case/case and case/control study was performed. Controls, 207 African American (AA) and 133 PR were defined as men with no PCa, a serum PSA < 2.5 ng/mL and a negative rectal examination...
May 24, 2017: Prostate
https://www.readbyqxmd.com/read/28538811/patient-survival-and-risk-of-death-after-prostate-cancer-treatment-in-the-brazilian-unified-health-system
#4
Sonia Faria Mendes Braga, Mirian Carvalho de Souza, Raphael Romie de Oliveira, Eli Iola Gurgel Andrade, Francisco de Assis Acurcio, Mariangela Leal Cherchiglia
OBJECTIVE: Analyze the probability of specific survival and factors associated with the risk of death of patients with prostate cancer who received outpatient cancer treatment in the Brazilian Unified Health System, Brazil. METHODS: Retrospective cohort study using the National Database of Oncology, developed through the deterministic-probabilistic pairing of health information systems: outpatient (SIA), hospital (SIH) and mortality (SIM). The probability of overall and specific survival was estimated by the time elapsed between the date of the first ambulatory treatment, from 2002 to 2003, until the patient's death or the end of the study...
May 15, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28526604/extramural-perineural-invasion-in-pt3-and-pt4-rectal-adenocarcinoma-as-prognostic-factor-after-preoperative-chemoradiotherapy
#5
Leonardo S Lino-Silva, Rosa A Salcedo-Hernández, Alejandro España-Ferrufino, Erika B Ruiz-García, Miguel Ruiz-Campos, Alberto M León-Takahashi, Abelardo Meneses-García
Perineural invasion (PNI) is widely studied in malignant tumors, and its prognostic significance is well demonstrated in the head and neck and prostate carcinomas, but its significance in rectal cancer is controversial. Most studies have focused on evaluating mural PNI (mPNI); however, extramural PNI (ePNI) may influence the prognosis after rectal cancer resection. We evaluated the prognostic value of ePNI compared with mPNI and with non-PNI, in rectal resections after preoperative chemoradiotherapy in 148 patients with pT3 and pT4 rectal carcinomas...
May 16, 2017: Human Pathology
https://www.readbyqxmd.com/read/28512777/the-australian-laparoscopic-radical-prostatectomy-learning-curve
#6
Marcus Handmer, Charles Chabert, Ronald Cohen, Troy Gianduzzo, Paul Kearns, Daniel Moon, Jason Ooi, Tom Shannon, David Sofield, Andrew Tan, Mark Louie-Johnsun
BACKGROUND: International estimates of the laparoscopic radical prostatectomy (LRP) learning curve extend to as many as 1000 cases, but is unknown for Fellowship-trained Australian surgeons. METHODS: Prospectively collected data from nine Australian surgeons who performed 2943 consecutive LRP cases was retrospectively reviewed. Their combined initial 100 cases (F100, n = 900) were compared to their second 100 cases (S100, n = 782) with two of nine surgeons completing fewer than 200 cases...
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28512731/active-surveillance-for-prostate-cancer-how-to-do-it-right
#7
REVIEW
Juan D Garisto, Laurence Klotz
Prostate cancer is the most common malignancy affecting men. There has been a nearly 70% increase in new prostate cancer cases, mostly classified as low risk, that have been diagnosed in early stages as a consequence of prostate-specific antigen (PSA) screening. Data regarding the natural history of this disease confirm the clinical insignificance of low-grade prostate cancer, which is associated with scant or no metastatic dissemination. Active surveillance is a conservative management approach, conducted for those patients with "low-risk" or "favorable-risk" disease, which avoids long-term adverse effects on the patient's quality of life...
May 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28500489/population-based-study-of-grade-progression-in-patients-who-harboured-gleason-3%C3%A2-%C3%A2-3
#8
Fanny Sampurno, Arul Earnest, Jeremy Millar, Mark Frydenberg, Declan Murphy, Warwick Delprado, Sue Evans
PURPOSE: This study aimed to evaluate (1) the time interval between a decision to commence on active surveillance (AS) and grade progression in community practice; (2) factors predicting grade progression in localised prostate cancer (CaP) patients apparently undergoing AS. METHODS: Data from the Prostate Cancer Outcomes Registry-Victoria were used to analyze men with Gleason 3 + 3 CaP or less who had at least one repeat biopsy. Unadjusted and adjusted 5-year Kaplan-Meier survival curves were used to assess the time to grade progression...
May 12, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28499383/nintedanib-antiangiogenic-inhibitor-effectiveness-in-delaying-adenocarcinoma-progression-in-transgenic-adenocarcinoma-of-the-mouse-prostate-tramp
#9
Raquel Frenedoso da Silva, Ellen Nogueira-Pangrazi, Larissa Akemi Kido, Fabio Montico, Sarah Arana, Dileep Kumar, Komal Raina, Rajesh Agarwal, Valéria Helena Alves Cagnon
BACKGROUND: In recent times, anti-cancer treatments have focused on Fibroblast Growth Factor (FGF) and Vascular-Endothelial Growth Factor (VEGF) pathway inhibitors so as to target tumor angiogenesis and cellular proliferation. One such drug is Nintedanib; the present study evaluated the effectiveness of Nintedanib treatment against in vitro proliferation of human prostate cancer (PCa) cell lines, and growth and progression of different grades of PCa lesions in pre-clinical PCa transgenic adenocarcinoma for the mouse prostate (TRAMP) model...
May 12, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28487115/lncrna-hoxd-as1-regulates-proliferation-and-chemo-resistance-of-castration-resistant-prostate-cancer-via-recruiting-wdr5
#10
Peng Gu, Xu Chen, Ruihui Xie, Jinli Han, Weibin Xie, Bo Wang, Wen Dong, Changhao Chen, Meihua Yang, Junyi Jiang, Ziyue Chen, Jian Huang, Tianxin Lin
Castration-resistant prostate cancer (CRPC) that occurs after the failure of androgen deprivation therapy is the leading cause of deaths in prostate cancer patients. Thus, there is an obvious and urgent need to fully understand the mechanism of CRPC and discover novel therapeutic targets. Long noncoding RNAs (lncRNAs) are crucial regulators in many human cancers, yet their potential roles and molecular mechanisms in CRPC are poorly understood. In this study, we discovered that an lncRNA HOXD-AS1 is highly expressed in CRPC cells and correlated closely with Gleason score, T stage, lymph nodes metastasis, and progression-free survival...
May 6, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28486040/gata2-expression-and-biochemical-recurrence-following-salvage-radiation-therapy-for-relapsing-prostate-cancer
#11
Jessica L Robinson, Katherine S Tzou, Alexander S Parker, Michael G Heckman, Kevin J Wu, Tracy W Hilton, Thomas M Pisansky, Steven E Schild, Jennifer L Peterson, Laura A Vallow, Steven J Buskirk
OBJECTIVES: High GATA2 expression has been associated with an increased risk of poor clinical outcomes after radical prostatectomy (RP), however has not been studied in relation to risk of biochemical recurrence (BCR) after salvage radiation therapy (SRT) for recurrent prostate cancer after RP. Our aim was to evaluate the association between protein expression levels of GATA2 in primary prostate cancer tumor samples and risk of BCR after SRT. METHODS: 109 men who were treated with SRT were included...
May 9, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28485390/the-survival-impact-of-neoadjuvant-hormonal-therapy-before-radical-prostatectomy-for-treatment-of-high-risk-prostate-cancer
#12
L Tosco, A Laenen, A Briganti, P Gontero, R J Karnes, M Albersen, P J Bastian, P Chlosta, F Claessens, F K Chun, W Everaerts, C Gratzke, M Graefen, B Kneitz, G Marchioro, R S Salas, B Tombal, T Van den Broeck, L Moris, A Battaglia, H van der Poel, J Walz, A Bossi, G De Meerleer, K Haustermans, H Van Poppel, M Spahn, S Joniau
BACKGROUND: Several randomized controlled trials assessed the outcomes of patients treated with neoadjuvant hormonal therapy (NHT) before radical prostatectomy (RP). The majority of them included mainly low and intermediate risk prostate cancer (PCa) without specifically assessing PCa-related death (PCRD). Thus, there is a lack of knowledge regarding a possible effect of NHT on PCRD in the high-risk PCa population. We aimed to analyze the effect of NHT on PCRD in a multicenter high-risk PCa population treated with RP, using a propensity-score adjustment...
May 9, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28481787/evaluation-of-practical-interpretation-hurdles-in-68ga-psma-pet-ct-in-55-patients-physiological-tracer-distribution-and-incidental-tracer-uptake
#13
Julian Kirchner, Benedikt Michael Schaarschmidt, Lino Morris Sawicki, Philipp Heusch, Hubertus Hautzel, Johannes Ermert, Robert Rabenalt, Gerald Antoch, Christian Buchbender
PURPOSE: To investigate the physiologic Ga-PSMA distribution and evaluate focal or diffuse radiotracer uptake in nonprostate cancer malignancies and in incidental findings. METHODS: Ga-PSMA PET/CT scans in 55 men performed for prostate cancer (49) or renal cell carcinoma (6) staging were analyzed retrospectively. Two radiologists evaluated the datasets in 2 reading sessions. First, physiological Ga-PSMA uptake was evaluated. Second, scans were analyzed for incidental uptake...
May 6, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28473535/androgen-receptor-variant-ar-v9-is-co-expressed-with-ar-v7-in-prostate-cancer-metastases-and-predicts-abiraterone-resistance
#14
Manish Kohli, Yeung Ho, David W Hillman, Jamie L Van Etten, Christine Henzler, Rendong Yang, Jame M Sperger, Yingming Li, Elizabeth Tseng, Ting Hon, Tyson Clark, Winston Tan, Rachel E Carlson, Liguo Wang, Hugues Sicotte, Ho Thai, Rafael Jimenez, Haojie Huang, Peter T Vedell, Bruce W Eckloff, J Fernando Quevedo, Henry C Pitot, Brian Costello, Jin Jen, Eric D Wieben, Kevin A T Silverstein, Joshua M Lang, Liewei Wang, Scott M Dehm
Purpose: Androgen receptor (AR) variant AR-V7 is a ligand-independent transcription factor that promotes prostate cancer resistance to AR-targeted therapies.  Accordingly, efforts are underway to develop strategies for monitoring and inhibiting AR-V7 in castration-resistant prostate cancer (CRPC).  The purpose of this study was to understand whether other AR variants may be co-expressed with AR-V7 and promote resistance to AR-targeted therapies.<br /><br /> Experimental Design:  We utilized complementary short- and long-read sequencing of intact AR mRNA isoforms to characterize AR expression in CRPC models...
May 4, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28468238/fasting-enhances-the-contrast-of-bone-metastatic-lesions-in-18-f-fluciclovine-pet-preclinical-study-using-a-rat-model-of-mixed-osteolytic-osteoblastic-bone-metastases
#15
Shuntaro Oka, Masaru Kanagawa, Yoshihiro Doi, David M Schuster, Mark M Goodman, Hirokatsu Yoshimura
(18)F-fluciclovine (trans-1-amino-3-(18)F-fluorocyclobutanecarboxylic acid) is an amino acid positron emission tomography (PET) tracer used for cancer staging (e.g., prostate and breast). Patients scheduled to undergo amino acid-PET are usually required to fast before PET tracer administration. However, there have been no reports addressing whether fasting improves fluciclovine-PET imaging. In this study, the authors investigated the influence of fasting on fluciclovine-PET using triple-tracer autoradiography with (14)C-fluciclovine, [5,6-³H]-2-fluoro-2-deoxy-d-glucose (³H-FDG), and (99m)Tc-hydroxymethylene diphosphonate ((99m)Tc-HMDP) in a rat breast cancer model of mixed osteolytic/osteoblastic bone metastases in which the animals fasted overnight...
April 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28467610/apurinic-apyrimidinic-endonuclease-1-ape1-ref-1-overexpression-is-an-independent-prognostic-marker-in-prostate-cancer-without-tmprss2-erg-fusion
#16
Manuela Juhnke, Asmus Heumann, Viktoria Chirico, Doris Höflmayer, Anne Menz, Andrea Hinsch, Claudia Hube-Magg, Martina Kluth, Dagmar S Lang, Christina Möller-Koop, Guido Sauter, Ronald Simon, Burkhard Beyer, Raisa Pompe, Imke Thederan, Thorsten Schlomm, Andreas M Luebke
Polymorphisms of the base excision repair gene APE1 may be associated with an increased risk for developing prostate cancer. In other cancer types, altered APE1 protein expression is a candidate prognostic marker. Using immunohistochemistry, we thus analyzed APE1 expression in 9763 prostate cancers in a tissue microarray (TMA) with attached clinical and molecular data. The comparison with normal prostate tissue revealed an upregulation of APE1 in cancer samples. APE1 immunostaining was considered weak in 20...
May 3, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28461988/endoscopic-extraperitoneal-radical-prostatectomy-an-initial-report-following-the-first-30-cases
#17
Bartłomiej Jakóbczyk, Marek Wrona, Marta Wrona-Lis, Elżbieta Oszukowska, Piotr Lipiński, Mariusz Szewczyk, Marek Lipiński, Waldemar Różański
INTRODUCTION: To present initial observations after the first 30 cases of endoscopic extraperitoneal radical prostatectomy carried out at our department, which so far has had no experience with this surgical procedure. MATERIAL AND METHODS: In the period of 15 months a group of 30 patients with organ confined prostate cancer, underwent endoscopic extraperitoneal radical prostatectomy using Montsouris technique. All procedures were performed by the same team of two urologists and one resident...
2017: Central European Journal of Urology
https://www.readbyqxmd.com/read/28445145/influence-of-serum-cholesterol-level-and-statin-treatment-on-prostate-cancer-aggressiveness
#18
Thomas J Schnoeller, Florian Jentzmik, Andres J Schrader, Julie Steinestel
Both cholesterol levels and the use of statins have been described to influence the development and prognosis of prostate cancer (PC). In this retrospective, cross-sectional analysis of consecutive cases from a tertiary referral center we evaluated an association between hypercholesterolemia (≥5.0mmol/l), the use of statins, and advanced/aggressive PC in 767 men with histologically confirmed, clinically localized PC awaiting radical prostatectomy. We found that patients with HCE (n=287, 37.4%) had a significantly higher incidence of poorly differentiated PC (Gleason score ≥7b, 81...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28443144/modern-day-prostate-cancer-is-not-meaningfully-associated-with-lower-urinary-tract-symptoms-analysis-of-a-propensity-score-matched-cohort
#19
Amar Bhindi, Bimal Bhindi, Girish S Kulkarni, Robert J Hamilton, Ants Toi, Theodorus H van der Kwast, Andrew Evans, Alexandre R Zlotta, Antonio Finelli, Neil E Fleshner
INTRODUCTION: We sought to determine if prostate cancer (PCa) is associated with worse lower urinary tract symptoms (LUTS) than matched benign prostates, with attention to cancer characteristics, in a contemporary cohort. METHODS: Using a single-institution database (January 1, 2009-June 30, 2013), men diagnosed with PCa on biopsy and controls with negative biopsies were matched 1:1 on age, prostate volume, and a propensity score predicting the probability of PCa diagnosis...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28440322/does-mpmri-improve-clinical-criteria-in-selecting-men-with-prostate-cancer-for-active-surveillance
#20
K J Tay, R T Gupta, J Holtz, R K Silverman, E Tsivian, A Schulman, J W Moul, T J Polascik
BACKGROUND: Active surveillance (AS) has excellent short to medium term outcomes in well-selected prostate cancer patients. Traditional biopsy-based selection criteria have been criticized for inaccurate determination of cancer grade and extent. We evaluated the incremental benefit of multiparametric magnetic resonance imaging (mpMRI) in patient selection using various AS criteria. METHODS: We retrospectively evaluated men who received mpMRI before radical prostatectomy between 2011 and 2014...
April 25, 2017: Prostate Cancer and Prostatic Diseases
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