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Prostate specific antigen

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https://www.readbyqxmd.com/read/29792198/radioligand-therapy-of-metastatic-castration-resistant-prostate-cancer-current-approaches
#1
REVIEW
Zool Hilmi Awang, Markus Essler, Hojjat Ahmadzadehfar
Prostate Cancer is the forth most common type of cancer. Prostate-specific membrane antigen (PSMA) is anchored in the cell membrane of prostate epithelial cells. PSMA is highly expressed on prostate epithelial cells and strongly up-regulated in prostate cancer. Therefore it is an appropriate target for diagnostic and therapy of prostate cancer and its metastases. This article discusses several articles on radionuclide treatments in prostate cancer and the results on PSMA therapy with either beta or alpha emitters as a salvage therapy...
May 23, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29791696/monocenter-experience-with-532-nm-laser-photoselective-vaporization-of-the-prostate-by-greenlight-xps%C3%A2-laser-is-it-really-an-endourological-joker-card
#2
Jamil Ghahhari, Carlo D'Orta, Ambra Rizzoli, Michele Marchioni, Giulia I Primicer, Piergustavo De Francesco, Angelo Civitella, Mario Di Lecce, Pietro Castellan, Roberto Castellucci, Fabio Neri, Fabiola Raffaella Tamburro, Luca Cindolo, Luigi Schips
INTRODUCTION: In our study, we reported on our monocenter experience with GreenLight (GL) Xcelerated Performance System (XPS)™ /MoXy™ laser fiber (American Medical Systems Inc., Minnetonka, Minnesota), examining its efficacy, safety, and its ability to effectively treat lower urinary tract symptoms (LUTS) in benign prostate obstruction (BPO). We also explored and compared the three different endoscopic approaches used for GL treatment of benign prostatic hyperplasia (BPH), standard photovaporization (PVP), anatomical PVP, and GreenLight XPS™ enucleation of the prostate...
June 1, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29791131/sensitivity-enhancement-of-fret-immunoassays-by-multiple-antibody-conjugation-on-quantum-dots
#3
Giacomo Annio, Travis Jennings, Oya Tagit, Niko Hildebrandt
Quantum dots (QDs) are not only advantageous for color-tuning, improved brightness, and high stability, but their nanoparticle surfaces also allow for the attachment of many biomolecules. Because IgG antibodies (ABs) are in the same size range of biocompatible QDs and the AB orientation after conjugation to the QD is often random, it is difficult to predict if few or many ABs per QD will lead to an efficient AB-QD conjugate. This is particularly true for homogeneous Förster resonance energy transfer (FRET) sandwich immunoassays, for which the ABs on the QD must bind a biomarker that needs to bind a second AB-FRET-conjugate...
May 23, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29790867/fluorine-18-fluorocholine-pet-ct-parameters-predictive-for-hematological-toxicity-to-radium-223-therapy-in-castrate-resistant-prostate-cancer-patients-with-bone-metastases-a-pilot-study
#4
Lavinia Vija Racaru, Mathieu Sinigaglia, Salim Kanoun, Fayçal Ben Bouallègue, Ilan Tal, Sévérine Brillouet, Mathilde Bauriaud-Mallet, Slimane Zerdoud, Lawrence Dierickx, Delphine Vallot, Olivier Caselles, Erwan Gabiache, Pierre Pascal, Frederic Courbon
PURPOSE: This study aims to predict hematological toxicity induced by Ra therapy. We investigated the value of metabolically active bone tumor volume (MBTV) and total bone lesion activity (TLA) calculated on pretreatment fluorine-18-fluorocholine (F-FCH) PET/CT in castrate-resistant prostate cancer (CRPC) patients with bone metastases treated with Ra radionuclide therapy. PATIENTS AND METHODS: F-FCH PET/CT imaging was performed in 15 patients with CRPC before treatment with Ra...
May 21, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29789815/challenging-case-robot-assisted-laparoscopic-prostatectomy-after-prior-suprapubic-open-prostatectomy
#5
Shirin Razdan, Sanjay Razdan
Introduction: Given the ubiquity of robot-assisted laparoscopic prostatectomy (RALP) for treatment of localized prostate cancer, more surgeons are encountering challenging cases, either secondary to difficult anatomy, prior abdominal surgery, or prior radiation therapy. Our case is of RALP in a patient after prior suprapubic prostatectomy. Case Presentation: A 61-year-old otherwise healthy Hispanic gentleman presented for consultation after being found to have Gleason 4 + 4 = 8 prostate cancer on transrectal ultrasound-guided biopsy by an outside provider in July 2017...
2018: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/29789766/salvage-high-dose-rate-brachytherapy-for-prostate-cancer-persistence-after-brachytherapy-repeated-use-of-a-polyethylene-glycol-hydrogel-spacer
#6
Rodrigo Hepp, Thilo Eggert, Georg Schabl, Lars Herberholz, Tim Petry, Razvan Galalae
Purpose: The aim of this study is to determine if a repeated hydrogel injection in a previously irradiated patient prior to salvage high-dose-rate brachytherapy (HDR-BT) is feasible. Material and methods: A 61-year-old man with an organ confined (cT1c cN0 cM0, Gleason score 3 + 3 = 6, initial prostate-specific antigen [PSA] 7.9 ng/ml) prostate cancer was previously treated with HDR-BT (3 fractions of 11.5 Gy every 2nd week) after hydrogel injection to reduce the rectal dose...
April 2018: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29789764/a-single-institution-analysis-of-low-dose-rate-brachytherapy-5-year-reported-survival-and-late-toxicity-outcomes
#7
REVIEW
Michael Chao, Sandra Spencer, Mario Guerrieri, Wei Ding, Mehran Goharian, Huong Ho, Michael Ng, Danielle Healey, Alwin Tan, Chee Cham, Daryl Lim Joon, Nathan Lawrentschuk, Douglas Travis, Shomik Sengupta, Yee Chan, Andrew Troy, Trung Pham, David Clarke, Peter Liodakis, Damien Bolton
Purpose: To report the 5-year biochemical relapse-free survival (BRFS), overall survival (OS), and long-term toxicity outcomes of patients treated with low-dose-rate (LDR) brachytherapy as monotherapy for low- to intermediate-risk prostate cancer. Material and methods: Between 2004 and 2011, 371 patients were treated with LDR brachytherapy as monotherapy. Of these, 102 patients (27%) underwent transurethral resection of the prostate (TURP) prior to implantation...
April 2018: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29786851/annual-report-to-the-nation-on-the-status-of-cancer-part-ii-recent-changes-in-prostate-cancer-trends-and-disease-characteristics
#8
Serban Negoita, Eric J Feuer, Angela Mariotto, Kathleen A Cronin, Valentina I Petkov, Sarah K Hussey, Vicki Benard, S Jane Henley, Robert N Anderson, Stacey Fedewa, Recinda L Sherman, Betsy A Kohler, Barbara J Dearmon, Andrew J Lake, Jiemin Ma, Lisa C Richardson, Ahmedin Jemal, Lynne Penberthy
BACKGROUND: Temporal trends in prostate cancer incidence and death rates have been attributed to changing patterns of screening and improved treatment (mortality only), among other factors. This study evaluated contemporary national-level trends and their relations with prostate-specific antigen (PSA) testing prevalence and explored trends in incidence according to disease characteristics with stage-specific, delay-adjusted rates. METHODS: Joinpoint regression was used to examine changes in delay-adjusted prostate cancer incidence rates from population-based US cancer registries from 2000 to 2014 by age categories, race, and disease characteristics, including stage, PSA, Gleason score, and clinical extension...
May 22, 2018: Cancer
https://www.readbyqxmd.com/read/29786490/gallium-68-psma-11-pet-mr-imaging-in-patients-with-intermediate-or-high-risk-prostate-cancer
#9
Sonya Youngju Park, Claudia Zacharias, Caitlyn Harrison, Richard E Fan, Christian Kunder, Negin Hatami, Frederik Giesel, Pejman Ghanouni, Bruce Daniel, Andreas M Loening, Geoffrey A Sonn, Andrei Iagaru
Purpose To report the results of dual-time-point gallium 68 (68 Ga) prostate-specific membrane antigen (PSMA)-11 positron emission tomography (PET)/magnetic resonance (MR) imaging prior to prostatectomy in patients with intermediate- or high-risk cancer. Materials and Methods Thirty-three men who underwent conventional imaging as clinically indicated and who were scheduled for radical prostatectomy with pelvic lymph node dissection were recruited for this study. A mean dose of 4.1 mCi ± 0.7 (151.7 MBq ± 25...
May 16, 2018: Radiology
https://www.readbyqxmd.com/read/29785515/prostate-specific-antigen-flare-induced-by-223-racl-2-in-patients-with-metastatic-castration-resistant-prostate-cancer
#10
Angelo Castello, H A Macapinlac, E Lopci, E B Santos
PURPOSE: Prostate-specific antigen (PSA) flare is a well-known phenomenon in patients with prostate cancer, but its impact during radium-223 dichloride (223 RaCl2 ) therapy is still unclear. This radioisotope has shown to improve overall survival in metastatic castration-resistant prostate cancer (mCRPC). We sought to evaluate the impact of PSA flare on survival and its relation with metabolic parameters on 18 F-labeled sodium fluoride PET/CT. METHODS: We conducted a retrospective study of 168 patients with mCRPC (median age 69; median PSA 29...
May 21, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29781117/psa-screening-prostate-biopsy-and-treatment-of-prostate-cancer-in-the-years-surrounding-the-uspstf-recommendation-against-prostate-cancer-screening
#11
James T Kearns, Sarah K Holt, Jonathan L Wright, Daniel W Lin, Paul H Lange, John L Gore
BACKGROUND: The 2012 United States Preventive Services Task Force recommendation against screening for prostate cancer has impacted rates of prostate-specific antigen (PSA) screening and appears to be associated with declining prostate cancer incidence. Our objective was to characterize health care utilization that may explain these observed trends. METHODS: MarketScan claims, which capture >30 million privately insured patients in the United States, were queried for all men aged 40-64 years for the years 2008-2014...
May 21, 2018: Cancer
https://www.readbyqxmd.com/read/29779925/the-application-of-p2psa-and-prostate-health-index-in-prostate-cancer-detection-a-prospective-cohort-in-a-tertiary-medical-center
#12
Yung-Ting Cheng, Chih-Hung Chiang, Yeong-Shiau Pu, Shih Ping Liu, Yu-Chuang Lu, Yi-Kai Chang, Hong-Chiang Chang, Kuo-How Huang, Yuan-Ju Lee, Po-Ming Chow, Shih-Chun Hung, Chao-Yuan Huang
BACKGROUND/PURPOSE: Prostate specific antigen (PSA) with low specificity that causes unnecessary prostate biopsies increases clinical morbidities, psychological stress, and medical expenses. We aimed to test the accuracy and cutoff value of Prostate Health Index (PHI) in men for prostate cancer detection. METHODS: We prospectively enrolled 213 men who underwent prostate biopsy with PSA≦10 ng/ml or abnormal findings on digital rectal examination. Total PSA (tPSA), free PSA (fPSA) and p2PSA levels were measured by serum samples before prostate biopsy...
May 17, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29778349/a-contemporary-prostate-biopsy-risk-calculator-based-on-multiple-heterogeneous-cohorts
#13
Donna P Ankerst, Johanna Straubinger, Katharina Selig, Lourdes Guerrios, Amanda De Hoedt, Javier Hernandez, Michael A Liss, Robin J Leach, Stephen J Freedland, Michael W Kattan, Robert Nam, Alexander Haese, Francesco Montorsi, Stephen A Boorjian, Matthew R Cooperberg, Cedric Poyet, Emily Vertosick, Andrew J Vickers
BACKGROUND: Prostate cancer prediction tools provide quantitative guidance for doctor-patient decision-making regarding biopsy. The widely used online Prostate Cancer Prevention Trial Risk Calculator (PCPTRC) utilized data from the 1990s based on six-core biopsies and outdated grading systems. OBJECTIVE: We prospectively gathered data from men undergoing prostate biopsy in multiple diverse North American and European institutions participating in the Prostate Biopsy Collaborative Group (PBCG) in order to build a state-of-the-art risk prediction tool...
May 16, 2018: European Urology
https://www.readbyqxmd.com/read/29777523/application-of-cu-64-nodaga-psma-pet-in-prostate-cancer
#14
Sabina Sevcenco, Hans Christoph Klingler, Klaus Eredics, Alexander Friedl, Jenifer Schneeweiss, Peter Knoll, Thomas Kunit, Lukas Lusuardi, Siroos Mirzaei
INTRODUCTION: The high diagnostic potential of 64 Cu-PSMA PET-CT imaging was clinically investigated in prostate cancer patients with recurrent disease and in the primary staging of selected patients with advanced local disease. The aim of our study is to assess the uptake behavior in the clinical setting of 64Copper Prostate-Specific Membrane Antigen (64 Cu PSMA) Positron Emission Tomography/Computed Tomography (PET/CT) in prostate cancer. METHODS: A retrospective study was performed in 23 patients with intermediate, high risk and progressive disease at primary staging of prostate cancer...
May 17, 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29777228/effects-of-clomiphene-citrate-on-male-obesity-associated-hypogonadism-a-randomized-double-blind-placebo-controlled-study
#15
Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29775158/microrna-expression-in-tumour-tissue-and-plasma-in-patients-with-newly-diagnosed-metastatic-prostate-cancer
#16
Ahmed Hussein Zedan, Torben Frøstrup Hansen, Jannie Assenholt, Mindaugas Pleckaitis, Jonna Skov Madsen, Palle Jörn Sloth Osther
Prostate cancer is the most common cancer among men in the western world. Clinical practice is continuously challenged by the pitfalls of the available diagnostic tools. microRNAs may represent promising biomarkers in many types of human cancers, including prostate cancer. The aim of this study was to investigate microRNA expression in tumour tissue and matched plasma in a cohort of patients with primary metastatic prostate cancer. The relative expression of 12 microRNAs was assessed in diagnostic needle biopsies from the prostate and matched plasma samples in two prospective cohorts (screening cohorts) comprising 21 patients with metastatic prostate cancer and 25 control patients...
May 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29775052/double-photosystems-based-z-scheme-photoelectrochemical-sensing-mode-for-ultrasensitive-detection-of-disease-biomarker-accompanying-3d-dna-walker
#17
Shuzhen Lv, Kangyao Zhang, Yongyi Zeng, Dianping Tang
A new double photosystems-based 'Z-scheme' photoelectrochemical (PEC) sensing platform is designed for ultrasensitive detection of prostate-specific antigen (PSA) by coupling with three-dimensional (3D) DNA walker. Two photosystems consist of CdS quantum dots (photosystem I; PS I) and BiVO4 photoactive materials (photosystem II; PS II), whereas gold nanoparticles (AuNPs) photodeposited on high-active {010} facets of BiVO4 are used as the electron mediators to promote electron transfer from conduction band (CB) of PS II to valence band (VB) of PS I...
May 18, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29773955/survival-outcomes-of-radical-prostatectomy-and-external-beam-radiotherapy-in-clinically-localized-high-risk-prostate-cancer-a-population-based-propensity-score-matched-study
#18
Xiaobin Gu, Xianshu Gao, Ming Cui, Mu Xie, Mingwei Ma, Shangbin Qin, Xiaoying Li, Xin Qi, Yun Bai, Dian Wang
Objective: This study was aimed to compare survival outcomes in high-risk prostate cancer (PCa) patients receiving external beam radiotherapy (EBRT) or radical prostatectomy (RP). Materials and methods: The Surveillance, Epidemiology, and End Results (SEER) database was used to identify PCa patients with high-risk features who received RP alone or EBRT alone from 2004 to 2008. Propensity-score matching (PSM) was performed. Kaplan-Meier survival analysis was used to compare cancer-specific survival (CSS) and overall survival (OS)...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29772622/-delay-in-high-grade-metastatic-prostate-cancer-progression-by-dutasteride-a-case-report
#19
Yuya Yamada, Hiroshi Fujiwara, Shinya Somiya, Shohei Fujikawa, Yuki Kamiyama, Masahiro Tamaki, Toshio Kanaoka
An 84-year-old man was referred to our hospital with swollen right cervical lymph nodes. Computed tomography showed right supraclavicular and mediastinal lymph node enlargement, and fluorodeoxyglucose positronemissiontomography showed multiple areas of abnormally increased radioactivity inthe right supraclavicular and mediastinal lymph nodes, right ninth rib, and left fifth and seventh ribs. Biopsy of the right supraclavicular lymph node revealed metastatic adenocarcinoma with partial immunohistochemical staining for prostate specific antigen (PSA)...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29772620/-development-of-ectopic-adrenocorticotropic-hormone-syndrome-in-a-patient-with-prostate-cancer-during-combined-androgen-blockade-therapy
#20
Yosuke Sekii, Mitsuhiro Yoshinaga, Masahiro Nakagawa, Hidefumi Kishikawa, Kazumasa Oka, Kenji Nishimura
A 74-year old man presented to us with difficulty urinating. The laboratory examinations revealed an elevated prostate-specific antigen (PSA) level. A prostate biopsy revealed prostate adenocarcinoma. The computed tomography scan showed metastasis to lymph nodes in the pelvic cavity and both adrenal glands. Combined androgen blockade therapy was started, and PSA levels began to decrease gradually. However, 2 months later, he was hospitalized for treatment of cellulitis and was found to have hypertension, hyperglycemia, and hypokalemia...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
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