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Prostate cancer radiotherapy

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https://www.readbyqxmd.com/read/28624784/mitochondrial-pyruvate-carrier-function-determines-cell-stemness-and-metabolic-reprogramming-in-cancer-cells
#1
Xiaoli Li, Gaoyang Han, Xiaoran Li, Quancheng Kan, Zhirui Fan, Yaqing Li, Yasai Ji, Jing Zhao, Mingzhi Zhang, Mantas Grigalavicius, Viktor Berge, Mariusz Adam Goscinski, Jahn M Nesland, Zhenhe Suo
One of the remarkable features of cancer cells is aerobic glycolysis, a phenomenon known as the "Warburg Effect", in which cells rely preferentially on glycolysis instead of oxidative phosphorylation (OXPHOS) as the main energy source even in the presence of high oxygen tension. Cells with dysfunctional mitochondria are unable to generate sufficient ATP from mitochondrial OXPHOS, and then are forced to rely on glycolysis for ATP generation. Here we report our results in a prostate cancer cell line in which the mitochondrial pyruvate carrier 1 (MPC1) gene was knockout...
May 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28623436/high-dose-rate-brachytherapy-as-salvage-modality-for-locally-recurrent-prostate-cancer-after-definitive-radiotherapy-a%C3%A2-systematic-review
#2
REVIEW
Georgios Chatzikonstantinou, Nikolaos Zamboglou, Claus Rödel, Eleni Zoga, Iosif Strouthos, Saeed Ahmed Butt, Nikolaos Tselis
PURPOSE: To review the current status of interstitial high-dose-rate brachytherapy as a salvage modality (sHDR BRT) for locally recurrent prostate cancer after definitive radiotherapy (RT). MATERIALS AND METHODS: A literature search was performed in PubMed using "high-dose-rate, brachytherapy, prostate cancer, salvage" as search terms. In all, 51 search results published between 2000 and 2016 were identified. Data tables were generated and summary descriptions created...
June 16, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28622831/impact-of-postoperative-radiotherapy-in-men-with-persistently-elevated-prostate-specific-antigen-after-radical-prostatectomy-for-prostate-cancer-a-long-term-survival-analysis
#3
Giorgio Gandaglia, Stephen A Boorjian, William P Parker, Emanuele Zaffuto, Nicola Fossati, Marco Bandini, Paolo Dell'Oglio, Nazareno Suardi, Francesco Montorsi, R Jeffrey Karnes, Alberto Briganti
BACKGROUND: Prostate cancer (PCa) patients with prostate-specific antigen (PSA) persistence after radical prostatectomy (RP) are at increased risk of mortality, although the natural history of these men is heterogeneous and the optimal management has not been established. OBJECTIVE: To develop a model to predict cancer-specific mortality (CSM) and to test the impact of radiotherapy (RT) on survival in this setting. DESIGN, SETTING, AND PARTICIPANTS: We identified 496 patients treated with RP and lymph node dissection at two referral centers between 1994 and 2014 who had PSA persistence, defined as a PSA level between 0...
June 13, 2017: European Urology
https://www.readbyqxmd.com/read/28622770/intensity-modulated-radiation-therapy-from-70gy-to-80gy-in-prostate-cancer-six-year-outcomes-and-predictors-of-late-toxicity
#4
Maria Jolnerovski, Julia Salleron, Véronique Beckendorf, Didier Peiffert, Anne-Sophie Baumann, Valérie Bernier, Sandrine Huger, Vincent Marchesi, Ciprian Chira
OBJECTIVE: To report grade ≥2 overall late rectal and urinary toxicities in patients (pts) with prostate cancer treated by intensity-modulated radiotherapy (IMRT) at 3 dose-levels. Identify predictors of radiation toxicity and report biochemical progression free survival (bPFS). METHODS: A total of 277 pts were treated with 70Gy (10.8%), 74Gy (63.9%) and 80 Gy (25.3%) using IMRT without pelvic irradiation were analyzed. Short or long-course androgen deprivation therapy (ADT) was allowed in 46...
June 16, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28620751/impact-of-a-rectal-and-bladder-preparation-protocol-on-prostate-cancer-outcome-in-patients-treated-with-external-beam-radiotherapy
#5
A Maggio, D Gabriele, E Garibaldi, S Bresciani, E Delmastro, A Di Dia, A Miranti, M Poli, T Varetto, M Stasi, P Gabriele
PURPOSE AND OBJECTIVE: To test the hypothesis that a rectal and bladder preparation protocol is associated with an increase in prostate cancer specific survival (PCSS), clinical disease free survival (CDFS) and biochemical disease free survival (BDFS). PATIENTS AND METHODS: From 1999 to 2012, 1080 prostate cancer (PCa) patients were treated with three-dimensional conformal radiotherapy (3DCRT). Of these patients, 761 were treated with an empty rectum and comfortably full bladder (RBP) preparation protocol, while for 319 patients no rectal/bladder preparation (NRBP) protocol was adopted...
June 15, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28620579/delineation-of-the-prostate-bed-the-invisible-target-is-still-an-issue
#6
Igor Latorzeff, Paul Sargos, Geneviève Loos, Stéphane Supiot, Stéphane Guerif, Christian Carrie
For pathological high-risk prostate cancer, adjuvant irradiation has shown a survival benefit. Phase III studies have highlighted that half men would face biochemical relapse and would be candidate for radiotherapy at adjuvant or salvage times. Despite at least four published international contouring guidelines from different collaborative groups, discrepancies remain for volumes, delineation, and margins to be considered in order to optimize radiotherapy planning. This article from "Groupe d'Etude des Tumeurs UroGénitales (GETUG)" members will focus on controversies to help clinicians to create best volume delineation for adjuvant or salvage post prostatectomy radiotherapy...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28618843/risk-of-cardiac-death-among-cancer-survivors-in-the-united-states-a-seer-database-analysis
#7
Omar Abdel-Rahman
 Background: Population-based data on the risk of cardiac death among cancer survivors are needed. This scenario was evaluated in cancer survivors (>5 years) registered within the Surveillance, Epidemiology and End Results (SEER) database. METHODS: The SEER database was queried using SEER*Stat to determine the frequency of cardiac death compared to other causes of death; and to determine heart disease-specific and cancer-specific survival rates in survivors of each of the 10 most common cancers in men and women in the SEER database...
June 21, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28615058/long-term-prognostic-significance-of-rising-psa-levels-following-radiotherapy-for-localized-prostate-cancer-focus-on-overall-survival
#8
Carla Freiberger, Vanessa Berneking, Thomas-Alexander Vögeli, Ruth Kirschner-Hermanns, Michael J Eble, Michael Pinkawa
BACKGROUND: The aim of this study was to evaluate the long-term prognostic significance of rising PSA levels, particularly focussing on overall survival. METHODS: Two hundred ninety-five patients with localized prostate cancer were either treated with low-dose-rate (LDR) brachytherapy with I-125 seeds as monotherapy (n = 94; 145Gy), high-dose-rate (HDR) brachytherapy with Ir-192 as a boost to external beam RT (n = 66; 50.4Gy in 1.8Gy fractions EBRT + 18Gy in 9Gy fractions HDR) or EBRT alone (70...
June 14, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28614527/brachytherapy-guideline-in-prostate-cancer-high-and-low-dose-rate
#9
Samir Abdallah Hanna, Leonardo Pimentel
No abstract text is available yet for this article.
April 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28612468/decision-making-processes-among-men-with-low-risk-prostate-cancer-a-survey-study
#10
Richard M Hoffman, Stephen K Van Den Eeden, Kimberly M Davis, Tania Lobo, George Luta, Jun Shan, David Aaronson, David F Penson, Amethyst D Leimpeter, Kathryn Taylor
OBJECTIVE: To characterize decision-making processes and outcomes among men expressing early treatment preferences for low-risk prostate cancer. METHODS: We conducted telephone surveys of men newly diagnosed with low-risk prostate cancer in 2012-14. We analyzed subject who had discussed prostate cancer treatment with a clinician and expressed a treatment preference. We asked about decision-making processes, including physician discussions, prostate-cancer knowledge, decision-making styles, treatment preference, and decisional conflict...
June 13, 2017: Psycho-oncology
https://www.readbyqxmd.com/read/28610779/survival-and-complications-following-surgery-and-radiation-for-localized-prostate-cancer-an-international-collaborative-review
#11
REVIEW
Christopher J D Wallis, Adam Glaser, Jim C Hu, Hartwig Huland, Nathan Lawrentschuk, Daniel Moon, Declan G Murphy, Paul L Nguyen, Matthew J Resnick, Robert K Nam
BACKGROUND: Evaluation of treatment options for localized prostate cancer (PCa) remains among the highest priorities for comparative effectiveness research. Surgery and radiotherapy (RT) are the two interventions most commonly used. OBJECTIVE: To provide a critical narrative review of evidence of the comparative effectiveness and harms of surgery and RT in the treatment of localized PCa. EVIDENCE ACQUISITION: A collaborative critical narrative review of the literature was conducted...
June 10, 2017: European Urology
https://www.readbyqxmd.com/read/28602202/re-10-year-outcomes-after-monitoring-surgery-or-radiotherapy-for-localized-prostate-cancer
#12
Peter C Albertsen
No abstract text is available yet for this article.
June 8, 2017: European Urology
https://www.readbyqxmd.com/read/28599663/salvage-robotic-sbrt-for-local-prostate-cancer-recurrence-after-radiotherapy-preliminary-results-of-the-oscar-lambret-center
#13
Thomas Leroy, Thomas Lacornerie, Emilie Bogart, Philippe Nickers, Eric Lartigau, David Pasquier
BACKGROUND: Currently, there is no standard option for local salvage treatment for local prostate cancer recurrence after radiotherapy. Our objective was to investigate the feasibility and efficiency of Robotic Stereotactic Body Radiation Therapy (SBRT) in this clinical setting. METHODS/MATERIALS: We retrospectively reviewed patients who were treated at our institution with SBRT for local prostate cancer recurrence after External Beam Radiation Therapy (EBRT) or brachytherapy...
June 9, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28595442/quality-of-life-in-responders-after-palliative-radiation-therapy-for-painful-bone-metastases-using-eortc-qlq-c30-and-eortc-qlq-bm22-results-of-a-brazilian-cohort
#14
Lucas C Mendez, Srinivas Raman, Bo Angela Wan, José Luiz Padilha da Silva, Fábio Y Moraes, Kennya M L B Lima, Maurício F Silva, Maria Del Pilar Estevez Diz, Edward Chow, Gustavo Nader Marta
BACKGROUND: Bone metastases cause pain, suffering and impaired quality of life (QoL). Palliative radiotherapy (RT) and/or chemotherapy are effective methods in controlling pain, reducing analgesics use and improving QoL. This study goal was to investigate the changes in QoL scores among patients who responded to palliative treatment. METHODS: A prospective study evaluating the role of radiation therapy in a public academic hospital in São Paulo-Brazil recorded patients' opioid use, pain score, Portuguese version of QLQ-BM22 and QLQ-C30 before and 2 months after radiotherapy...
May 17, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28594087/adult-prostatic-sarcoma-a-contemporary-multicenter-rare-cancer-network-study
#15
Berardino De Bari, Bradley Stish, Mark Wayne Ball, Yacob Habboush, Paul Sargos, Marco Krengli, Alberto Bossi, Armando Stabile, Claudio Sole Pesutic, Laëtitia Lestrade, Robert Jan Smeenk, Barbara Alicja Jereczek-Fossa, Zilli Thomas, Gilles Créhange, Filippo Alongi, Nicholas Zaorsky, Mahmut Ozsahin
INTRODUCTION: Adult prostatic sarcoma (PS) is a rare disease. While surgery is considered the standard approach, the role of other therapies is not completely established. We report results of the largest multicentric contemporary cohort of PS patients. MATERIALS AND METHODS: This study included 61 adult PS patients treated in 16 American and European Institutions. Median age was 64.4 years (range: 22-87). Curative surgery was delivered in 48 patients (prostatectomy = 26, cystoprostatectomy = 22), usually with lymphadenectomy (n = 40)...
June 8, 2017: Prostate
https://www.readbyqxmd.com/read/28592379/comprehensive-geriatric-assessment-in-men-aged-70-years-or-older-with-localised-prostate-cancer-undergoing-radical-radiotherapy
#16
G E C Osborne, S A Appleyard, D C Gilbert, C I Jones, C Lorimer, M Villanueva, E Peasgood, A Robinson, A Nikapota, A Ring
AIMS: Treatment decisions for men aged 70 years or over with localised prostate cancer need to take into account the risk of death from competing causes and fitness for the proposed treatment. Objective assessments such as those included in a comprehensive geriatric assessment (CGA) might help to inform the decision-making process. The aim of this study was to describe the CGA scores of a cohort of older men with prostate cancer, evaluate potential screening tools in this population and assess whether any CGA component predicts significant acute radiotherapy toxicity...
June 4, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28583748/development-of-parp-inhibitors-in-gynecological-malignancies
#17
REVIEW
Yvonne L E Ang, David S P Tan
PARP inhibitors demonstrate synthetic lethality in tumors with BRCA1/2 mutations and other homologous recombination repair deficiencies by interfering with DNA repair and causing direct toxicity to DNA through PARP trapping. PARP inhibitors have been shown to be beneficial in the treatment of BRCA1/2-mutated ovarian cancers, which has led to a shift in the treatment paradigm of this disease. Further studies to establish the role of PARP inhibitors during earlier stages of treatment are ongoing. The use of PARP inhibitors in other cancers with homologous recombination repair deficiencies, such as breast cancer and prostate cancer, is gradually evolving as well, including their use in the neoadjuvant and adjuvant settings...
March 14, 2017: Current Problems in Cancer
https://www.readbyqxmd.com/read/28582898/dosimetric-comparisons-of-imrt-planning-using-mco-and-dmpo-techniques
#18
Xiongfei Liao, Jinyi Lang, Ningshan Li, Pei Wang, Jie Li, Jack Yang, Yazheng Chen
The goal of this study was to evaluate the use of multi-criteria optimization (MCO) in the planning and optimization of intensity-modulated radiotherapy (IMRT). Twenty (20) IMRT patients (ten (10) with prostate cancer and ten (10) with lung cancer) were randomly selected. The treatment plans for these patients were designed using direct machine parameter optimization (DMPO). Based on these plans, new plans were designed using multi-criteria optimization (MCO), keeping the optimization objectives and constraints unchanged...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28581200/natural-history-of-second-biochemical-failure-following-salvage-radiation-therapy-for-prostate-cancer-a-multi-institution-study
#19
Vasu Tumati, William C Jackson, Ahmed E Abugharib, Ganesh Raj, Claus Roehrborn, Yair Lotan, Kevin Courtney, Aditya Bagrodia, Jeffrey C Gahan, Zachary S Zumsteg, Michael R Folkert, Aaron M Laine, Raquibul Hannan, Daniel E Spratt, Neil B Desai
OBJECTIVES: To describe the natural history of prostate cancer in men who experience a second biochemical recurrence (BCR) after salvage radiotherapy (SRT) following prostatectomy. SUBJECTS/PATIENTS AND METHODS: Following SRT at two institutions from 1986-2013, 286 patients developed second BCR, defined as two rises in PSA of ≥0.2 ng/mL above nadir. Event rates for distant metastasis (DM) or freedom from DM (FFDM), castration-resistant prostate cancer (CRPC), prostate cancer-specific survival (PCSS), and overall survival (OS) were estimated using the Kaplan-Meier method...
June 5, 2017: BJU International
https://www.readbyqxmd.com/read/28580312/the-role-of-radiofrequency-hyperthermia-in-the-radiosensitization-of-a-human-prostate-cancer-cell-line
#20
Azam Janati Esfahani, Seied Rabi Mahdavi, Mohammad Bagher Shiran, Samideh Khoei
OBJECTIVE: This study evaluated enhanced induced DNA damages and apoptosis of a spheroid culture of DU145 prostate cancer cells treated by a combination of radiofrequency hyperthermia (RF HT) with radiation treatment (RT) from an external radiotherapy machine compared to RT alone. MATERIALS AND METHODS: In this experimental study, DU145 cells were cultured as spheroids until they reached 300 µm in diameter. We exposed these cultures to either: RF HT for 90 minutes at 43˚C originated from a Celsius TCS system, RF HT followed by RT at doses of 2 Gy or 4 Gy (15 MV energy) with 15-minute interval, or RT alone at the above mentioned doses...
2017: Cell Journal
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