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Post metastasis prostate cancer

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https://www.readbyqxmd.com/read/29123014/positron-emission-tomography-using-a-grpr-antagonist-68-ga-rm26-in-healthy-volunteers-and-prostate-cancer-patients
#1
Jingjing Zhang, Gang Niu, Xingrong Fan, Lixin Lang, Guozhu Hou, Libo Chen, Huanwen Wu, Zhaohui Zhu, Fang Li, Xiaoyuan Chen
This study was designed to study the safety, biodistribution, radiation dosimetry of a gastrin-releasing peptide receptor (GRPR) antagonist positron emission tomography (PET) tracer (68)Ga-RM26, to assess its clinical diagnostic value in prostate cancer patients, and to perform a direct comparison between GRPR antagonist (68)Ga-RM26 and agonist (68)Ga-BBN. Methods: Five healthy volunteers were enrolled to validate the safety of (68)Ga-RM26 and calculate dosimetry. A total of 28 patients with prostate cancer (17 newly diagnosed and 11 post therapy) were recruited with written informed consent...
November 9, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29116393/reconsidering-the-role-of-pelvic-lymph-node-dissection-with-radical-prostatectomy-for-prostate-cancer-in-an-era-of-improving-radiological-staging-techniques
#2
J W Yaxley, J Dagher, B Delahunt, L Egevad, J Srigley, H Samaratunga
BACKGROUND: Performing an extended pelvic lymph node dissection (PLND) on all men with intermediate- and high-risk prostate cancer at the time of a radical prostatectomy (RP) remains controversial. The majority of patients PLND histology is benign, and the long-term cancer-free progression in men with positive lymph node metastasis is low. The objective is to investigate the probability of long-term biochemical freedom from recurrent disease (bNED) in men with lymph node metastasis identified at the time of radical prostatectomy (RP)...
November 7, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29063620/predictive-value-of-epithelial-mesenchymal-transition-emt-signature-and-parp-1-in-prostate-cancer-radioresistance
#3
Timothy W Stark, Patrick J Hensley, Amanda Spear, Hong Pu, Stephen S Strup, Natasha Kyprianou
INTRODUCTION: Epithelial-mesenchymal-transition (EMT) has been previously identified as a contributor to prostate cancer progression to metastasis and therapeutic resistance to antiandrogens and radiotherapy. In this study we conducted a retrospective analysis to investigate the significance of radiation-induced EMT and consequential changes to the tumor microenvironment in biochemical recurrence and response to radiotherapy in prostate cancer patients. METHODS: Expression profiling and localization for EMT effectors, E-Cadherin, N-Cadherin, β-catenin and Vimentin was assessed in human prostate tumor specimens pre- and post-radiotherapy and correlated with biochemical recurrence...
December 2017: Prostate
https://www.readbyqxmd.com/read/29039785/prospective-comparison-of-f-18-choline-pet-ct-scan-versus-axial-mri-for-detecting-bone-metastasis-in-biochemically-relapsed-prostate-cancer-patients
#4
Wouter Huysse, Frédéric Lecouvet, Paolo Castellucci, Piet Ost, Valerie Lambrecht, Carlos Artigas, Marie-Laurence Denis, Kathia De Man, Louke Delrue, Lennart Jans, Aurélie De Bruycker, Filip De Vos, Gert De Meerleer, Karel Decaestecker, Valerie Fonteyne, Bieke Lambert
We compared fluor-18 choline positron emission tomography/computed tomography (PET/CT) and axial skeleton magnetic resonance imaging (MRI) prospectively obtained for the detection of bone metastases in non-castrated patients with biochemically recurrent prostate cancer following primary treatment. PET/CT was performed 45 min post-injection of 3-4 MBq/kg F-18 methyl choline. MRI included T1- and fluid sensitive T2-weighted images of the spine and pelvis. Readers were initially blinded from other results and all scans underwent independent double reading...
October 17, 2017: Diagnostics
https://www.readbyqxmd.com/read/28975570/ra-223-spect-for-semi-quantitative-analysis-in-comparison-with-tc-99m-hmdp-spect-phantom-study-and-initial-clinical-experience
#5
Yoshiki Owaki, Tadaki Nakahara, Takeo Kosaka, Junichi Fukada, Atsuhiro Kumabe, Akira Ichimura, Mikoto Murakami, Kiyotaka Nakajima, Masahiro Fukushi, Kazumasa Inoue, Mototsugu Oya, Masahiro Jinzaki
BACKGROUND: Image-based measurement of absorbed dose of Ra-223 dichloride may be useful in predicting therapeutic outcome in patients with castration-resistant prostate cancer (CRPC). In general, SPECT has been found to be more accurate than planar imaging in terms of lesion-based analysis. The aims of this study were to assess the feasibility and clinical usefulness of Ra-223 SPECT. The energy spectrum of Ra-223 and SPECT images of a cylindrical phantom with a hot rod were obtained to determine the collimator candidates and energy window settings suitable for clinical Ra-223 SPECT (basic study A)...
October 3, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28972962/igf-1r-associates-with-adverse-outcomes-after-radical-radiotherapy-for-prostate-cancer
#6
Tamara Aleksic, Clare Verrill, Richard J Bryant, Cheng Han, Andrew Ross Worrall, Laurent Brureau, Stephane Larré, Geoff S Higgins, Fahad Fazal, Ahmad Sabbagh, Syed Haider, Francesca M Buffa, David Cole, Valentine M Macaulay
BACKGROUND: Activated type 1 insulin-like growth factor receptors (IGF-1Rs) undergo internalisation and nuclear translocation, promoting cell survival. We previously reported that IGF-1R inhibition delays DNA damage repair, sensitising prostate cancer cells to ionising radiation. Here we tested the clinical relevance of these findings. METHODS: We assessed associations between IGF-1R and clinical outcomes by immunohistochemistry in diagnostic biopsies of 136 men treated with 55-70 Gy external beam radiotherapy for prostate cancer, comparing results with publicly available transcriptional data in surgically treated patients...
October 3, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28925397/coactosin-like-protein-clp-cotl1-suppresses-breast-cancer-growth-through-activation-of-il-24-perp-and-inhibition-of-non-canonical-tgf%C3%AE-signaling
#7
L Xia, X Xiao, W L Liu, Y Song, T J J Liu, Y J Li, E Zacksenhaus, X J Hao, Y Ben-David
Coactosin-like protein (CLP, or Cotl1), is an F-actin-binding protein, whose role in cancer is largely unknown. Here we show that CLP/Cotl1 is highly expressed in a rat epithelial breast cancer cell line (FE1.3) compared with its mesenchymal counterpart (FE1.2). Knockdown of CLP/Cotl1 in FE1.3 cells increased cell proliferation, whereas its overexpression in FE1.2 cells inhibited proliferation in culture and reduced tumor growth in xenograft assays in mice. Mechanistically, we identified two major pathways through which CLP/Cotl1 exerts its suppressive effects...
September 18, 2017: Oncogene
https://www.readbyqxmd.com/read/28916273/identification-of-recurrence-sites-following-post-prostatectomy-treatment-for-prostate-cancer-using-11-c-choline-positron-emission-tomography-and-multiparametric-pelvic-mri
#8
Avinash Nehra, William P Parker, Rimki Haloi, Sean S Park, Lance A Mynderse, Val J Lowe, Brian J Davis, J Fernando Quevedo, Geoffrey B Johnson, Eugene D Kwon, R Jeffrey Karnes
PURPOSE: To describe anatomic sites of recurrence among prostate cancer patients with biochemical recurrence following radical prostatectomy (RP) and postoperative radiotherapy (RT) and/or androgen deprivation therapy (ADT) using (11)C-Choline PET/CT and multiparametric-MRI. MATERIALS AND METHODS: RP patients evaluated with (11)C-Choline PET/CT and multiparametric-MRI following RT and/or ADT were evaluated for patterns of recurrence and clinicopathologic features...
September 12, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28900507/targeting-micrornas-in-prostate-cancer-radiotherapy
#9
REVIEW
Jie Ni, Joseph Bucci, Lei Chang, David Malouf, Peter Graham, Yong Li
Radiotherapy is one of the most important treatment options for localized early-stage or advanced-stage prostate cancer (CaP). Radioresistance (relapse after radiotherapy) is a major challenge for the current radiotherapy. There is great interest in investigating mechanisms of radioresistance and developing novel treatment strategies to overcome radioresistance. MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression at the post-transcriptional level, participating in numerous physiological and pathological processes including cancer invasion, progression, metastasis and therapeutic resistance...
2017: Theranostics
https://www.readbyqxmd.com/read/28854948/novel-three-dimensional-bone-mapping-software-can-help-assess-progression-of-osseous-metastases-from-routine-ct
#10
D Thurtle, G M Treece, T Barrett, V J Gnanapragasam
Imaging of bone metastasis response to therapy is a research priority. Stradwin is a new software-tool, with demonstrated sub-voxel accuracy in assessing cortical bone properties from routine CT. We applied this technology to the context of osseous metastases, with particular focus on disease progression using prostate cancer as a model. 3D-rendered 'bone-maps' were produced for 20 men with advanced prostate cancer, including a sub-cohort of 9 who had undergone serial scans. Correlation between baseline interpretation and assessments of progression between modalities was assessed...
August 30, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28761595/case-spontaneous-regression-of-post-radical-prostatectomy-prostate-specific-antigen-elevation-without-adjuvant-therapy-in-a-patient-with-lymph-node-metastasis
#11
Taehyoung Lee, Yanbo Guo, Saahil Vij, Rahul Bansal, Nathan C Wong, Bobby Shayegan
Prostate cancer remains the most frequently diagnosed cancer among men. The combination of clinical stage, serum prostate-specific antigen (PSA), and Gleason score (biopsy) assists in predictive assessment of pathological stage and prognosis. Furthermore, pathological criteria, including Gleason score, surgical margin status, extracapsular extension, seminal vesicle invasion, and lymph node involvement, provide prognostication in patients undergoing radical prostatectomy (RP). In this paper, we present a case of a patient with high-risk prostate cancer with persistent PSA elevation post-RP who experiences a complete regression of PSA without any adjuvant therapy...
July 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28761588/salvage-prostatectomy-for-post-radiation-adenocarcinoma-with-treatment-effect-pathological-and-oncological-outcomes
#12
Michael J Metcalfe, Patricia Troncoso, Charles C Guo, Hsiang-Chun Chen, Yasar Bozkurt, John F Ward, Louis L Pisters
INTRODUCTION: Prostate biopsies following localized radiation therapy for prostate cancer often demonstrate residual prostatic carcinoma with treatment effect (CTE). The final oncological outcome of prostatic CTE is currently uncertain. We studied the pathological and oncological outcomes for a large cohort of patients who had CTE on post-radiation therapy biopsy and subsequently underwent salvage radical prostatectomy (SRP). METHODS: A single-centre retrospective review of all SRPs performed from 1995-2014 was performed...
July 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28760557/testicular-metastasis-from-prostatic-adenocarcinoma-presenting-as-recurrent-epididymo-orchitis
#13
Kyle M Waisanen, Tijani Osumah, Sneha S Vaish
OBJECTIVE: To present a rare case of testicular metastasis from prostatic adenocarcinoma origin and to provide a meaningful discussion of currently available supporting literature. MATERIALS AND METHODS: Pertinent health information was obtained by retrospective analysis of hospital electronic medical records. RESULTS: A 93-year-old man with history of castration-resistant prostatic adenocarcinoma presented with recurrent episodes of epididymo-orchitis with initial symptoms responsive to oral antibiotics...
July 28, 2017: Urology
https://www.readbyqxmd.com/read/28753787/in-men-with-castration-resistant-prostate-cancer-visceral-metastases-predict-shorter-overall-survival-what-predicts-visceral-metastases-results-from-the-search-database
#14
Colette A Whitney, Lauren E Howard, Edwin M Posadas, Christopher L Amling, William J Aronson, Matthew R Cooperberg, Christopher J Kane, Martha K Terris, Stephen J Freedland
BACKGROUND: Although visceral metastases (VMs) are widely recognized to portend worse prognoses compared with bone and lymph metastases in men with metastatic castration-resistant prostate cancer (mCRPC), little is known about what predicts VMs and the extent to which men with VMs do worse. OBJECTIVE: To determine whether men with VMs at initial mCRPC diagnosis have worse overall survival (OS) and identify predictors of VMs. DESIGN, SETTING, AND PARTICIPANTS: We analyzed 494 men diagnosed with castration-resistant prostate cancer post-1999 and no known metastases from five Veterans Affairs hospitals of the Shared Equal Access Regional Cancer Hospital (SEARCH) database who later developed metastases...
August 29, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28736322/clinical-outcomes-of-chemotherapy-na%C3%A3-ve-men-with-metastatic-castration-resistant-prostate-cancer-and-low-baseline-prostate-specific-antigen-treated-with-enzalutamide-vs-placebo
#15
Mary-Ellen Taplin, Andrew J Armstrong, Ping Lin, Andrew Krivoshik, De Phung, Teresa Parli, Bertrand Tombal, Tomasz M Beer
PURPOSE: Metastatic castration resistant prostate cancer with low baseline prostate specific antigen represents an early stage in the natural history of castration resistant prostate cancer progression (low volume disease), low prostate specific antigen producing disease or disease that is less dependent on androgen receptor biology (high volume disease). We analyzed outcomes in men with low prostate specific antigen and a high disease burden who received the oral androgen receptor inhibitor enzalutamide in the PREVAIL (Safety and Efficacy Study of Oral MDV3100 in Chemotherapy-Naive Patients with Progressive Metastatic Prostate Cancer) study...
December 2017: Journal of Urology
https://www.readbyqxmd.com/read/28731148/molecular-genetics-and-targeted-therapy-of-wnt-related-human-diseases-review
#16
Masuko Katoh, Masaru Katoh
Canonical WNT signaling through Frizzled and LRP5/6 receptors is transduced to the WNT/β-catenin and WNT/stabilization of proteins (STOP) signaling cascades to regulate cell fate and proliferation, whereas non-canonical WNT signaling through Frizzled or ROR receptors is transduced to the WNT/planar cell polarity (PCP), WNT/G protein-coupled receptor (GPCR) and WNT/receptor tyrosine kinase (RTK) signaling cascades to regulate cytoskeletal dynamics and directional cell movement. WNT/β-catenin signaling cascade crosstalks with RTK/SRK and GPCR-cAMP-PKA signaling cascades to regulate β-catenin phosphorylation and β-catenin-dependent transcription...
September 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28723518/mid-term-outcomes-following-salvage-lymph-node-dissection-for-prostate-cancer-nodal-recurrence-status-post-radical-prostatectomy
#17
Fabio Zattoni, Avinash Nehra, Christopher R Murphy, Laureano Rangel, Lance Mynderse, Val Lowe, Eugene Kwon, R Jeffrey Karnes
BACKGROUND: Patients with oligometastatic prostate cancer lymph node recurrence can be treated with many options including salvage lymph node dissection (sLND). OBJECTIVE: Evaluation of outcomes of sLND and identification of clinicopathologic features in predicting further biochemical and radiological relapse after sLND for prostate cancer. DESIGN, SETTING, AND PARTICIPANTS: Between November 1, 2009 and March 31, 2015, 117 patients with biochemical recurrence (BCR) after radical prostatectomy (RP) underwent sLND by a single surgeon after a standardized 11C-choline positron emission tomography/computed tomography...
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28693433/prospective-evaluation-of-computer-assisted-analysis-of-skeletal-lesions-for-the-staging-of-prostate-cancer
#18
Lars J Petersen, Jesper C Mortensen, Henrik Bertelsen, Helle D Zacho
BACKGROUND: The purpose of this study was to compare the agreement of the bone scan index (BSI) using EXINI Bone(BSI) versus experts' readings in the initial staging for bone metastasis in prostate cancer. In addition, the diagnostic outcome was assessed in a large subset of patients where a true reference for metastases could be determined based on clinical and biochemical follow-up and/or supplementary imaging. METHODS: A total of 342 patients had a bone scintigraphy as part of routine staging for prostate cancer...
July 10, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28612542/-establishment-of-bone-metastasis-model-of-prostate-cancer-in-mice-with-monitoring-of-18-f-naf-pet-ct
#19
Qiang You, Hua-Wei Cai, Fu-Wen Pang, Zhe-Tao Wang, Yue Chen, Rong Tian, Lin Li, Li-Hong Chen
OBJECTIVES: To establish a mouse model bearing human prostate cancer xenograft with bone metastasis by the monitoring with X-Ray, Micro CT, and ¹⁸F-NaF PET/CT. METHODS: Sixteen male Balb/c nude mice were allocated into control (6 mice) and experimental group (10 mice). In experimental group, the mice were subjected to percutaneous injection of 2×10(5)PC-3 cells into tibial plateau, bone defects were assessed after 21 d by X-ray, Micro-CT and ¹⁸F-NaF PET/CT, and bone damages were evaluated by HE staining...
March 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28528811/ability-of-a-genomic-classifier-to-predict-metastasis-and-prostate-cancer-specific-mortality-after-radiation-or-surgery-based-on-needle-biopsy-specimens
#20
Paul L Nguyen, Zaid Haddad, Ashley E Ross, Neil E Martin, Samineh Deheshi, Lucia L C Lam, Jijumon Chelliserry, Jeffrey J Tosoian, Tamara L Lotan, Daniel E Spratt, Radka S Stoyanova, Sanoj Punnen, Kaye Ong, Christine Buerki, Maria Aranes, Tyler Kolisnik, Jennifer Margrave, Kasra Yousefi, Voleak Choeurng, Elai Davicioni, Bruce J Trock, Christopher J Kane, Alan Pollack, John W Davis, Felix Y Feng, Eric A Klein
BACKGROUND: Decipher is a validated genomic classifier developed to determine the biological potential for metastasis after radical prostatectomy (RP). OBJECTIVE: To evaluate the ability of biopsy Decipher to predict metastasis and Prostate cancer-specific mortality (PCSM) in primarily intermediate- to high-risk patients treated with RP or radiation therapy (RT). DESIGN, SETTING, AND PARTICIPANTS: Two hundred and thirty-five patients treated with either RP (n=105) or RT±androgen deprivation therapy (n=130) with available genomic expression profiles generated from diagnostic biopsy specimens from seven tertiary referral centers...
November 2017: European Urology
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