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https://www.readbyqxmd.com/read/29034282/differentiation-of-prostate-cancer-lesions-in-the-transition-zone-by-diffusion-weighted-mri
#1
Jie Bao, Ximing Wang, Chunhong Hu, Jianquan Hou, Fenglin Dong, Lingchuan Guo
OBJECTIVE: To differentiate prostate cancer lesions in transition zone by diffusion-weighted-MRI (DW-MRI). METHODS: Data from a total of 63 patients who underwent preoperative DWI (b of 0-1000 s/mm(2)) were prospectively collected and processed by a monoexponential (DWI) model and compared with a biexponential (IVIM) model for quantitation of apparent diffusion coefficients (ADCs), perfusion fraction f, diffusivity D and pseudo-diffusivity D*. Histogram analyses were performed by outlining entire-tumor regions of interest (ROIs)...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/29031300/optimal-preprocessing-of-serum-and-urine-metabolomic-data-fusion-for-staging-prostate-cancer-through-design-of-experiment
#2
Hong Zheng, Aimin Cai, Qi Zhou, Pengtao Xu, Liangcai Zhao, Chen Li, Baijun Dong, Hongchang Gao
Accurate classification of cancer stages will achieve precision treatment for cancer. Metabolomics presents biological phenotypes at the metabolite level and holds a great potential for cancer classification. Since metabolomic data can be obtained from different samples or analytical techniques, data fusion has been applied to improve classification accuracy. Data preprocessing is an essential step during metabolomic data analysis. Therefore, we developed an innovative optimization method to select a proper data preprocessing strategy for metabolomic data fusion using a design of experiment approach for improving the classification of prostate cancer (PCa) stages...
October 23, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29024425/multicentre-evaluation-of-magnetic-resonance-imaging-supported-transperineal-prostate-biopsy-in-biopsy-na%C3%A3-ve-men-with-suspicion-of-prostate-cancer
#3
N L Hansen, T Barrett, C Kesch, L Pepdjonovic, D Bonekamp, R O'Sullivan, F Distler, A Warren, C Samel, B Hadaschik, J Grummet, C Kastner
OBJECTIVES: To analyse the detection rates of primary MRI-fusion transperineal prostate biopsy using combined targeted and systematic core distribution in three tertiary referral centres. PATIENTS AND METHODS: Multicentre, prospective outcome study of 807 consecutive biopsy-naïve patients having undergone MRI-guided transperineal prostate biopsy as the first diagnostic intervention between 10/2012 and 05/2016. MRI was reported following PI-RADS criteria. 236 patients had 18-24 systematic transperineal biopsies only, and 571 patients underwent additional targeted biopsies either by MRI-fusion or cognitive targeting if PI-RADS ≥3 lesions were present...
October 11, 2017: BJU International
https://www.readbyqxmd.com/read/29019021/analysis-of-histological-findings-obtained-combining-us-mp-mri-fusion-guided-biopsies-with-systematic-us-biopsies-mp-mri-role-in-prostate-cancer-detection-and-false-negative
#4
Eliodoro Faiella, Domiziana Santucci, Federico Greco, Giulia Frauenfelder, Viola Giacobbe, Giovanni Muto, Bruno Beomonte Zobel, Rosario Francesco Grasso
AIMS AND OBJECTIVES: To evaluate the diagnostic accuracy of mp-MRI correlating US/mp-MRI fusion-guided biopsy with systematic random US-guided biopsy in prostate cancer diagnosis. MATERIALS AND METHODS: 137 suspected prostatic abnormalities were identified on mp-MRI (1.5T) in 96 patients and classified according to PI-RADS score v2. All target lesions underwent US/mp-MRI fusion biopsy and prostatic sampling was completed by US-guided systematic random 12-core biopsies...
October 10, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28988963/defining-novel-and-practical-metrics-to-assess-the-deliverables-of-multiparametric-magnetic-resonance-imaging-ultrasound-fusion-prostate-biopsy
#5
Benjamin T Ristau, David Y T Chen, Jeffrey Ellis, Aseem Malhotra, Lyudmilla DeMora, Rosaleen B Parsons, Barton Milestone, Marion Brody, Rosalia Viterbo, Richard Greenberg, Marc Smaldone, Robert Uzzo, Jordan Anaokar, Alexander Kutikov
PURPOSE: Multiparametric magnetic resonance (mpMRI)/ultrasound targeted prostate biopsy (TB) is touted as a tool to improve prostate cancer care. Yet, the true clinical utility of TB over transrectal ultrasound-guided prostate biopsy (TRUS-B) has not been systematically analyzed. We introduce two metrics to better quantify and report the deliverables of TB. MATERIALS AND METHODS: We reviewed our prospective database containing patients who underwent simultaneous TB/TRUS-B...
October 5, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28987685/sub-differentiating-equivocal-pi-rads-3-lesions-in-multiparametric-magnetic-resonance-imaging-of-the-prostate-to-improve-cancer-detection
#6
N L Hansen, B C Koo, A Y Warren, C Kastner, T Barrett
PURPOSE: To evaluate sub-differentiation of PI-RADS-3 prostate lesions using pre-defined T2- and diffusion-weighted (DWI) MRI criteria, to aid the biopsy decision process. METHODS: 143 patients with PIRADS-3 index lesions on MRI underwent targeted transperineal-MR/US fusion biopsy. Radiologists with 2 and 7-years experience performed blinded retrospective second-reads using set criteria and assigned biopsy recommendations. Inter-reader agreement, Gleason score (GS), positive (PPV) predictive values (±95% confidence intervals) were calculated and compared by Fisher's exact test with Bonferroni-Hom correction...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28986382/loss-of-foxo1-cooperates-with-tmprss2-erg-overexpression-to-promote-prostate-tumorigenesis-and-cell-invasion
#7
Yinhui Yang, Alexandra M Blee, Dejie Wang, Jian An, Yunqian Pan, Yuqian Yan, Tao Ma, Yundong He, Joseph Dugdale, Xiaonan Hou, Jun Zhang, S John Weroha, Wei-Guo Zhu, Y Alan Wang, Ronald A DePinho, Wanhai Xu, Haojie Huang
E26 transformation-specific (ETS) transcription factor ERG is aberrantly overexpressed in approximately 50% of all human PCa due to TMPRSS2-ERG gene rearrangements. However, mice with prostate-specific transgenic expression of PCa-associated ERG alone fail to develop PCa, highlighting that ERG requires other lesions to drive prostate tumorigenesis. Forkhead box (FOXO) transcription factor FOXO1 is a tumor suppressor that is frequently inactivated in human PCa. Here we demonstrate that FOXO1, but not other FOXO proteins (FOXO3 and FOXO4), binds and inhibits the transcriptional activity of PCa-associated ERG independently of FOXO1 transcriptional activity...
October 6, 2017: Cancer Research
https://www.readbyqxmd.com/read/28984511/interbody-distraction-and-vertebral-body-reconstruction-with-polymethylmethacrylate-for-the-treatment-of-pathological-fractures
#8
Scott L Zuckerman, Ganesh Rao, Laurence D Rhines, Ian E McCutcheon, Richard G Everson, Claudio E Tatsui
OBJECTIVE Treatment of epidural spinal cord compression (ESCC) caused by tumor includes surgical decompression and stabilization followed by postoperative radiation. In the case of severe axial loading impairment, anterior column reconstruction is indicated. The authors describe the use of interbody distraction to restore vertebral body height and correct kyphotic angulation prior to reconstruction with polymethylmethacrylate (PMMA), and report the long-term durability of such reconstruction. METHODS A single institution, prospective series of patients with ESCC undergoing single-stage decompression, anterior column reconstruction, and posterior instrumentation from 2013 to 2016 was retrospectively analyzed...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28978094/dna-repair-deregulation-in-discrete-prostate-cancer-lesions-identified-on-multi-parametric-mri-and-targeted-by-mri-ultrasound-fusion-guided-biopsy
#9
Caleb R Dulaney, Soroush Rais-Bahrami, Debra Della Manna, Jennifer B Gordetsky, Jeffrey W Nix, Eddy S Yang
Prostate cancer is histologically and molecularly heterogeneous. Clinically significant disease is often driven by dominant intra-prostatic lesions (IPLs). Prostate cancers cluster into molecular phenotypes with substantial genetic heterogeneity making pathway-based molecular analysis appealing. MRI/ultrasound fusion biopsy provides a unique opportunity to characterize tumor biology of discrete lesions at diagnosis. This study determined the feasibility of pathway-based gene expression analysis of prostate biopsies and characterized cancer pathway deregulation...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28976544/multi-institutional-nomogram-predicting-benign-prostate-pathology-on-magnetic-resonance-ultrasound-fusion-biopsy-in-men-with-a-prior-negative-12-core-systematic-biopsy
#10
Matthew Truong, Bokai Wang, Jennifer B Gordetsky, Jeffrey W Nix, Thomas P Frye, Edward M Messing, John V Thomas, Changyong Feng, Soroush Rais-Bahrami
BACKGROUND: Prostate multiparametric magnetic resonance imaging (mpMRI) may be recommended for patients with a prior negative systematic biopsy (SB). However, a proportion of these patients will continue to have no prostate cancer (PCa) identified on magnetic resonance/ultrasound fusion biopsy (FB) despite abnormal mpMRI findings. METHODS: In this multi-institutional, retrospective study, clinical and mpMRI parameters were assessed for 285 consecutive patients with at least 1 prior negative biopsy who underwent FB for a Prostate Imaging Reporting and Data System (PI-RADS) score of 3 to 5 at the University of Rochester Medical Center from December 2014 to December 2016, or at the University of Alabama at Birmingham from February 2014 to February 2017...
October 4, 2017: Cancer
https://www.readbyqxmd.com/read/28971310/recombinant-production-and-characterization-of-sac-the-core-domain-of-par-4-by-sumo-fusion-system
#11
Jian Zhang, Aiyou Sun, Yuguo Dong, Dongzhi Wei
Prostate apoptosis response-4 (Par-4), an anticancer protein that interacts with cell surface receptor GRP78, can selectively suppress proliferation and induce apoptosis of cancer cells. The core domain of Par-4 (aa 137-195), designated as SAC, is sufficient to inhibit tumor growth and metastasis without harming normal tissues and organs. Nevertheless, the anticancer effects of SAC have not been determined in ovarian cancer cells. Here, we developed a novel method for producing native SAC in Escherichia coli using a small ubiquitin-related modifier (SUMO) fusion system...
October 2, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28971090/molecular-imaging-and-fusion-targeted-biopsy-of-the-prostate
#12
Baowei Fei, Peter T Nieh, Viraj A Master, Yun Zhang, Adeboye O Osunkoya, David M Schuster
PURPOSE: This paper provides a review on molecular imaging with positron emission tomography (PET) and magnetic resonance imaging (MRI) for prostate cancer detection and its applications in fusion targeted biopsy of the prostate. METHODS: Literature search was performed through the PubMed database using the keywords "prostate cancer", "MRI/ultrasound fusion", "molecular imaging", and "targeted biopsy". Estimates in autopsy studies indicate that 50% of men older than 50 years of age have prostate cancer...
February 2017: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28969413/the-eternal-enigma-in-prostatic-biopsy-access-route
#13
Andrea Fabiani, Emanuele Principi, Alessandra Filosa, Lucilla Servi
Dear Editors,We read with interest the article by Di Franco and co-workers (1). The introduction of prostatic magnetic resonance and the relative fusion-biopsy have not yet allowed the expected improvements in prostate biopsy. To our knowledge, there are no works that demonstrate the superiority of fusion techniques on the remaining ultrasound guided prostate biopsies that are still the widely used in the diagnosis of prostate cancer. Furthemore, these technologies are expensive exams and they are not yet available in all centers, especially in those minors...
October 3, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28968951/estradiol-er%C3%AE-2-signaling-axis-confers-growth-and-migration-of-crpc-cells-through-tmprss2-etv5-gene-fusion
#14
Hogyoung Kim, Amrita Datta, Sudha Talwar, Sarmad N Saleem, Debasis Mondal, Asim B Abdel-Mageed
Estrogen receptor beta (ERβ) splice variants are implicated in prostate cancer (PC) progression; however their underlying mechanisms remain elusive. We report that non-canonical activation of estradiol (E2)-ERβ2 signaling axis primes growth, colony-forming ability and migration of the androgen receptor (AR)-null castration-resistant PC (CRPC) cells under androgen-deprived conditions (ADC). The non-classical E2-ERβ2 mediates phosphorylation and activation of Src-IGF-1R complex, which in turn triggers p65-dependent transcriptional upregulation of the androgen-regulated serine protease TMPRSS2:ETV5a/TMPRSS2:ETV5b gene fusions under ADC...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28962878/targeted-prostate-biopsy-in-the-era-of-active-surveillance
#15
REVIEW
Fuad F Elkhoury, Demetrios N Simopoulos, Leonard S Marks
Targeted prostate biopsy using magnetic resonance imaging (MRI) guidance is improving accuracy of prostate cancer (CaP) diagnosis. This new biopsy technology is especially important for men undergoing active surveillance, improving patient selection for enrollment and enabling precise longitudinal monitoring. MRI/US fusion biopsy allows for three functions not previously possible with US-guided biopsy: targeting of suspicious regions, template-mapping for systematic sampling, and tracking of cancer foci over time...
September 26, 2017: Urology
https://www.readbyqxmd.com/read/28954787/mutational-analysis-of-gene-fusions-predicts-novel-mhc-class-i-restricted-t-cell-epitopes-immune-signatures-in-a-subset-of-prostate-cancer
#16
Jennifer L Kalina, David S Neilson, Yen-Yi Lin, Phineas T Hamilton, Alexandra Paige Comber, Emma M H Loy, S Cenk Sahinalp, Colin C Collins, Faraz Hach, Julian J Lum
PURPOSE: Gene fusions are frequently found in prostate cancer and may result in the formation of unique chimeric amino acid sequences (CASQs) that span the breakpoint of two fused gene products. This study evaluated the potential for fusion-derived CASQs to be a source of tumor neoepitopes, and determined their relationship to patterns of immune signatures in prostate cancer patients Experimental Design: A computational strategy was used to identify CASQs and their corresponding predicted MHC class I epitopes using RNA-Seq data from The Cancer Genome Atlas of prostate tumors...
September 27, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28951749/evaluation-of-intraoperative-magnetic-resonance-imaging-ultrasound-fusion-optimization-for-low-dose-rate-prostate-brachytherapy
#17
Stephen Abel, Paul Renz, Olivier Gayou, Jie Tang, E Day Werts, Mark Trombetta
PURPOSE: Intraoperative planning with transrectal ultrasound (US) is used for accurate seed placement and optimal dosimetry in prostate brachytherapy. However, prostate magnetic resonance imaging (MRI) has shown superiority in delineation of prostate anatomy. Accordingly, MRI/US fusion may be useful for accurate intraoperative planning. We analyzed planning with MRI/US fusion to compare differences in dosimetry and volume to that derived from the postoperative computed tomography (CT)...
August 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28941924/risk-stratification-of-equivocal-pi-rads-lesions-in-mp-mri-of-the-prostate
#18
T Ullrich, M Quentin, C Arsov, A K Schmaltz, A Tschischka, N Laqua, A Hiester, D Blondin, R Rabenalt, P Albers, G Antoch, L Schimmöller
PURPOSE: To systematically analyze patients with PI-RADS-3-lesions (called 'equivocal' according to PI-RADS v2) in multiparametric prostate MRI (mp-MRI) and MR-targeted plus systematic transrectal ultrasound-guided (TRUS-GB) biopsies as reference standard. MATERIAL AND METHODS: One hundred and twenty consecutive patients with a PI-RADS overall score of 3 after mp-MRI (T2WI, DWI, DCE-MRI) at 3T and subsequent targeted MRI/US fusion-guided (FUS-GB) plus systematic 12-core TRUS-GB were retrospectively included in this study...
September 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28941918/impact-of-lesion-visibility-on-transrectal-ultrasound-on-the-prediction-of-clinically-significant-prostate-cancer-gleason-score-%C3%A2-3-4-with-trus-mri-fusion-biopsy
#19
Kirema Garcia-Reyes, Hao G Nguyen, Ronald J Zagoria, Katsuto Shinohara, Peter R Carroll, Spencer C Behr, Antonio C Westphalen
PURPOSE: The purpose of this study was to estimate the impact of lesion visibility with TRUS on the prediction of CS-PCA with TRUS-MRI fusion biopsy. MATERIALS AND METHODS: This HIPAA-compliant, IRB-approved retrospective study included 178 men (age, 64.7 years; PSA, 8.9 ng/ml) who underwent TRUS-MRI fusion biopsy from January/2013 to September/2016. Visible lesions on MRI were those assigned a PI-RADS v2 score ≥ 3. TRUS was positive when a hypoechoic lesion was identified...
September 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28929505/high-level-glyoxalase-1-glo1-expression-is-linked-to-poor-prognosis-in-prostate-cancer
#20
Christoph Burdelski, Rami Shihada, Andrea Hinsch, Alexander Angerer, Cosima Göbel, Emily Friedrich, Claudia Hube-Magg, Susanne Burdak-Rothkamm, Martina Kluth, Ronald Simon, Christina Möller-Koop, Guido Sauter, Franzika Büscheck, Corinna Wittmer, Till S Clauditz, Till Krech, Maria C Tsourlakis, Sarah Minner, Markus Graefen, Thorsten Schlomm, Waldemar Wilczak, Frank Jacobsen
BACKGROUND: Glyoxalase 1 (GLO1) is an enzyme involved in removal of toxic byproducts accumulating during glycolysis from the cell. GLO1 is up regulated in many cancer types but its role in prostate cancer is largely unknown. METHODS: Here, we employed GLO1 immunohistochemistry on a tissue microarray including 11 152 tumors and an attached clinical and molecular database. RESULTS: Normal prostate epithelium was negative for GLO1, whereas 2059 (27...
November 2017: Prostate
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