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https://www.readbyqxmd.com/read/28640871/nomogram-to-predict-rectal-toxicity-following-prostate-cancer-radiotherapy
#1
Jean-Bernard Delobel, Khemara Gnep, Juan David Ospina, Véronique Beckendorf, Ciprian Chira, Jian Zhu, Alberto Bossi, Taha Messai, Oscar Acosta, Joël Castelli, Renaud de Crevoisier
BACKGROUND: To identify predictors of acute and late rectal toxicity following prostate cancer radiotherapy (RT), while integrating the potential impact of RT technique, dose escalation, and moderate hypofractionation, thus enabling us to generate a nomogram for individual prediction. METHODS: In total, 972 patients underwent RT for localized prostate cancer, to a total dose of 70 Gy or 80 Gy, using two different fractionations (2 Gy or 2.5 Gy/day), by means of several RT techniques (3D conformal RT [3DCRT], intensity-modulated RT [IMRT], or image-guided RT [IGRT])...
2017: PloS One
https://www.readbyqxmd.com/read/28635637/a-short-term-biological-indicator-for-long-term-kidney-damage-after-radionuclide-therapy-in-mice
#2
Giovanni Pellegrini, Klaudia Siwowska, Stephanie Haller, Daniel J Antoine, Roger Schibli, Anja Kipar, Cristina Müller
Folate receptor (FR)-targeted radionuclide therapy using folate radioconjugates is of interest due to the expression of the FR in a variety of tumor types. The high renal accumulation of radiofolates presents, however, a risk of radionephropathy. A potential option to address this challenge would be to use radioprotectants, such as amifostine. Methods for early detection of kidney damage that-in this case-cannot be predicted based on dose estimations, would facilitate the development of novel therapies. The aim of this study was, therefore, to assess potentially changing levels of plasma and urine biomarkers and to determine DNA damage at an early stage after radiofolate application...
June 21, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28634669/yttrium-90-y-90-resin-microsphere-therapy-for-patients-with-unresectable-hepatocellular-carcinoma-a-single-center-experience
#3
Semra İnce, Bülent Karaman, Engin Alagoz, Nuri Karadurmuş, Hüseyin Şan, Cemal Nuri Erçin, Nuri Arslan
BACKGROUND/AIM: Selective intraarterial radionuclide therapy (SIRT) with yttrium-90 (Y-90) resin microspheres presently has successful results in primary or metastatic inoperable liver tumors. This procedure, which is also known as radioembolisation, delivers high doses of radiation selectively to hepatic tumors while minimum healthy liver exposure. The aim of this study was to present our clinical experience of radiomicrosphere therapy for the treatment of patients with unresectable hepatocellular carcinoma (HCC)...
June 20, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/28632432/serum-micrornas-as-early-indicators-for-estimation-of-exposure-degree-in-response-to-ionizing-irradiation
#4
Wenjun Wei, Jinpeng He, Jufang Wang, Nan Ding, Bing Wang, Sulan Lin, Xurui Zhang, Junrui Hua, He Li, Burong Hu
Exposure to ionizing radiation from nuclear devices, spaceflights or terrorist attacks represents a major threat to human health and public security. After a radiological incident, noninvasive biomarkers that can facilitate rapid assessment of exposure risk in the early stages are urgently needed for optimal medical treatment. Serum microRNAs (miRNAs) are ideal biomarkers because they are stable in response to environmental changes, they are common among different species and are easily collected. Here, we performed miRNA PCR arrays to analyze miRNA expression profiles at 24 h postirradiation...
June 20, 2017: Radiation Research
https://www.readbyqxmd.com/read/28631740/radiotherapy-for-renal-cell-carcinoma-renaissance-of-an-overlooked-approach
#5
REVIEW
Shankar Siva, Gargi Kothari, Alexander Muacevic, Alexander V Louie, Ben J Slotman, Bin S Teh, Simon S Lo
Conventional radiotherapy previously had a limited role in the definitive treatment of renal cell carcinoma (RCC), owing to the disappointing outcomes of several trials and the perceived radioresistance of this type of cancer. In this context, radiotherapy has been relegated largely to the palliation of symptoms in patients with metastatic disease, with variable rates of response. Following the availability of newer technologies that enable safe delivery of high-dose radiotherapy, stereotactic ablative radiotherapy (SABR) has become increasingly used in patients with RCC...
June 20, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28631284/the-role-of-radiotherapy-in-bone-metastases-a-critical-review-of-current-literature
#6
REVIEW
A Kougioumtzopoulou, A Zygogianni, Z Liakouli, E Kypraiou, V Kouloulias
Radiotherapy is considered the treatment of choice for painful bone metastases. However, novel modalities of radiotherapy have emerged in the concept of oligometastasic disease. In addition, the increase of overall survival of patients with bone metastatic disease in the last decades due to systemic treatments has issued the silent topic of re-irradiation. The aim of this manuscript was to present a current thorough search of relevant literature. Originally, 6,087 articles revealed from PubMed database related to radiotherapy and bone metastases...
June 20, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28630876/a-dosimetric-comparison-of-dose-escalation-with-simultaneous-integrated-boost-for-locally-advanced-non-small-cell-lung-cancer
#7
Wenjuan Yang, Biao Zeng, Yanfang Qiu, Jianfeng Tan, Shilei Xu, Yilong Cai, Yujuan Zhou, Zhigang Liu, Junming Luo, Hui Wang
BACKGROUND: Many studies have demonstrated that a higher radiotherapy dose is associated with improved outcomes in non-small-cell lung cancer (NSCLC). We performed a dosimetric planning study to assess the dosimetric feasibility of intensity-modulated radiation therapy (IMRT) with a simultaneous integrated boost (SIB) in locally advanced NSCLC. METHODS: We enrolled twenty patients. Five different dose plans were generated for each patient. All plans were prescribed a dose of 60 Gy to the planning tumor volume (PTV)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28630212/a-pilot-study-of-stereotactic-body-radiation-therapy-combined-with-cytoreductive-nephrectomy-for-metastatic-renal-cell-carcinoma
#8
Anurag K Singh, Timothy B Winslow, Mohammad Habiby Kermany, Vincent Goritz, Lilia Heit, Austin Miller, Nicholas C Hoffend, Leighton C Stein, Lalith Kumaraswamy, Graham W Warren, Wiam Bshara, Kunle Odunsi, Junko Matsuzaki, Scott I Abrams, Thomas Schwaab, Jason B Muhitch
<p>While stereotactic body radiation therapy (SBRT) can reduce tumor volumes in metastatic renal cell carcinoma (mRCC) patients, little is known regarding the immunomodulatory effects of high-dose radiation in the tumor microenvironment. The main objectives of this pilot study were to assess the safety and feasibility of nephrectomy following SBRT treatment of mRCC patients and analyze the immunological impact of high-dose radiation.</p> <br /><br />Experimental Design: Human RCC cell lines were irradiated and evaluated for immunomodulation...
June 19, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28629952/analysis-of-outcomes-using-hypofractionated-tumor-bed-boost-combined-with-hypofractionated-whole-breast-irradiation-for-early-stage-breast-cancer
#9
Esther Yu, David Huang, Kara Leonard, Thomas Dipetrillo, David Wazer, Jaroslaw Hepel
INTRODUCTION: Tumor bed boost improves local control and is an important part of breast-conserving therapy. Data on the use of a hypofractioned tumor bed boost are needed. We performed a retrospective analysis of patients treated with hypofractionated whole breast irradiation (WBI) and hypofractionated boost to examine acute and delayed outcomes. MATERIALS AND METHODS: We examined the records of patients treated with hypofractionated WBI and tumor bed boost after lumpectomy for Stage 0 to II breast cancer...
May 25, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28629896/randomized-phase-ii-study-of-preoperative-chemoradiotherapy-panitumumab-followed-by-consolidation-chemotherapy-in-potentially-operable-locally-advanced-stage-iiia-n2-non-small-cell-lung-cancer-nrg-oncology-rtog-0839
#10
Martin J Edelman, Chen Hu, Quynh-Thu Le, Jessica S Donington, Warren D D'Souza, Adam P Dicker, Billy W Loo, Elizabeth M Gore, Gregory M M Videtic, Nathaniel R Evans, Joseph W Leach, Maximilian Diehn, Steven J Feigenberg, Yuhchyau Chen, Rebecca Paulus, Jeffrey D Bradley
INTRODUCTION: Multimodality therapy has curative potential in locally advanced non-small cell lung cancer (LASCLC). Mediastinal nodal sterilization (MNS) after induction chemoradiotherapy (CRT) can serve as an intermediate marker for efficacy. NRG Oncology RTOG 0229 demonstrated the feasibility and efficacy of combining full dose radiation (61.2Gy) with chemotherapy followed by resection and chemotherapy. Based upon that experience and evidence that epidermal growth factor receptor (EGFR) antibodies are radiosensitizing, we explored adding panitumumab to CRT followed by resection and consolidation chemotherapy in LANSCLC with a primary endpoint of MNS...
June 16, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28628155/-3d-printed-template-assisted-and-computed-tomography-image-guided-125-iodine-seed-implantation-for-supraclavicular-metastatic-tumor-a-dosimetric-study
#11
(no author information available yet)
OBJECTIVE: To compare the dosimetric data between the preoperative plans and postoperative verification in personalized 3D printed template-assisted and computed tomography (CT) image-guided 125-iodine seed implantation for supraclavicular metastatic tumor, and to evaluate the accuracy and feasibility at the dosimetry level. METHODS: A total of 14 patients with supraclavicular metastatic tumor (including 15 lesions) who received 3D printed template assisted and CT image-guided 125-iodine seed implantation in Department of Radiation Oncology of Peking University Third Hospital from January to September 2016 were enrolled...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627706/the-wnt-inhibitor-lgk-974-enhances-radiosensitivity-of-hepg2-cells-by-modulating-nrf2-signaling
#12
Dan Tian, Ying Shi, Dexi Chen, Qiang Liu, Feiyue Fan
Nuclear factor (erythroid-derived 2)-like 2 (NRF2) is a master regulator of antioxidant and detoxification activities that can eliminate reactive oxygen species (ROS) produced via irradiation. However, Nrf2 overexpression in liver cancer cells may cause both radioresistance and chemoresistance. Reducing Nrf2 levels can enhance the radiosensitivity of HepG2 cells. Wingless/int-3A (Wnt3A) is a Wnt family protein that mainly activates the canonical Wnt signaling pathway. Recent studies showed that the Axin1-GSK-3β protein complex, a component of the canonical Wnt signaling pathway, can capture Nrf2 and facilitate its ubiquitination and proteasomal degradation in the cytoplasm...
June 14, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28627000/pencil-beam-scanned-protons-for-the-treatment-of-patients-with-ewing-sarcoma
#13
Damien C Weber, Fritz R Murray, Dora Correia, Alessandra Bolsi, Martina Frei-Welte, Alessia Pica, Antony J Lomax, Ralf Schneider, Barbara Bachtiary
BACKGROUND: Few data exist regarding the clinical outcome of patients with Ewing sarcoma (EWS) treated with pencil beam scanning proton therapy (PT). We report the outcome of children, adolescents and young adults (AYA) treated with PT at the Paul Scherrer Institute. MATERIALS: Thirty-eight patients (median age, 9.9 years) received a median dose of 54.9 Gy(RBE) (where RBE is relative biologic effectiveness). Size of the tumor ranged from 1.7 to 24 cm. Most common primary site was axial/pelvic (n = 27; 71%)...
June 19, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28626600/distant-brain-recurrence-in-patients-with-five-or-more-newly-diagnosed-brain-metastases-treated-with-focal-stereotactic-radiotherapy-alone
#14
Olivia Claire Barrett, Andrew M McDonald, Jonathan W Thompson, Markus Bredel, Gerald McGwin, Kristen O Riley, John B Fiveash
BACKGROUND: To assess the clinical outcomes in patients with greater than 4 newly diagnosed brain metastases treated with focal stereotactic radiotherapy alone. METHODS: All patients with five or more brain metastases who received focal radiotherapy without whole brain radiation or resection were included in this retrospective analysis. Distant brain failure (DBF), overall survival (OS) and toxicity were reported. RESULTS: Thirty-six patients met inclusion with median clinical follow-up of 6...
2017: Journal of Radiosurgery and SBRT
https://www.readbyqxmd.com/read/28625640/association-between-intensity-modulated-radiotherapy-and-survival-in-patients-with-stage-iii-non-small-cell-lung-cancer-treated-with-chemoradiotherapy
#15
Matthew Koshy, Renuka Malik, Michael Spiotto, Usama Mahmood, Chad G Rusthoven, David J Sher
PURPOSE: To determine the effect of radiotherapy (RT) technique on treatment compliance and overall survival (OS) in patients with stage III non-small lung cancer (NSCLC) treated with definitive chemoradiotherapy (CRT). METHODS AND MATERIALS: This study included patients with stage III NSCLC in the National Cancer Database treated between 2003 and 2011 with definitive CRT to 60-63 Gray (Gy). Radiation treatment interruption (RTI) was defined as a break of ≥4 days...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28625534/predictors-of-urinary-and-rectal-toxicity-after-external-conformed-radiation-therapy-in-prostate-cancer-correlation-between-clinical-tumour-and-dosimetric-parameters-and-radical-and-postoperative-radiation-therapy
#16
C M Martínez-Arribas, C González-San Segundo, P Cuesta-Álvaro, F A Calvo-Manuel
OBJECTIVE: To determine rectal and urinary toxicity after external beam radiation therapy (EBRT), assessing the results of patients who undergo radical or postoperative therapy for prostate cancer (pancreatic cancer) and their correlation with potential risk factors. METHOD: A total of 333 patients were treated with EBRT. Of these, 285 underwent radical therapy and 48 underwent postoperative therapy (39 cases of rescue and 9 of adjuvant therapy). We collected clinical, tumour and dosimetric variable to correlate with toxicity parameters...
June 15, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28624671/radiation-exposure-of-barley-seeds-can-modify-the-early-stages-of-plants-development
#17
Stanislav Geras'kin, Roman Churyukin, Polina Volkova
The reactions of barley seeds (Nur and Grace varieties) in terms of the root and sprout lengths, germination and root mass were studied after γ-irradiation with doses in the range of 2-50 Gy. The dose range in which plants' growth stimulation occurs (16-20 Gy) was identified. It was shown that increased size of seedlings after irradiation with stimulating doses was due to the enhancing pace of development rather than an earlier germination. The activity of the majority of the enzymes studied increased in the range of doses that cause stimulation of seedlings development...
June 15, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28623847/toxicity-after-post-prostatectomy-image-guided-intensity-modulated-radiotherapy-using-australian-guidelines
#18
Stephen Chin, Noel J Aherne, Andrew Last, Hassan Assareh, Thomas P Shakespeare
INTRODUCTION: We evaluated single institution toxicity outcomes after post-prostatectomy radiotherapy (PPRT) via image-guided intensity-modulated radiation therapy (IG-IMRT) with implanted fiducial markers following national eviQ guidelines, for which late toxicity outcomes have not been published. METHODS: Prospectively collected toxicity data were retrospectively reviewed for 293 men who underwent 64-66 Gy IG-IMRT to the prostate bed between 2007 and 2015. RESULTS: Median follow-up after PPRT was 39 months...
June 17, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28623643/transplanted-fibroblasts-proliferate-in-host-bronchial-tissue-and-enhance-bronchial-anastomotic-healing-in-a-rodent-model
#19
Mario Vitacolonna, Fabian Doyon, Djeda Belharazem, Charalambos Tsagogiorgas, Peter Hohenberger, Eric D Roessner
INTRODUCTION: Healing of airway anastomoses after preoperative irradiation can be a significant clinical problem. The augmentation of bronchial anastomoses with a fibroblast-seeded human acellular dermis (hAD) was shown to be beneficial, although the underlying mechanism remained unclear. Therefore, in this study we investigated the fate of the fibroblasts transplanted to the scaffold covering the anastomosis. MATERIAL AND METHODS: 32 Fisher rats underwent surgical anastomosis of the left main bronchus...
June 14, 2017: International Journal of Artificial Organs
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
#20
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]
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