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lung cancer。radiation

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https://www.readbyqxmd.com/read/29040814/inhibiting-polo-like-kinase-1-plk1-enhances-radiosensitization-via-modulating-dna-repair-proteins-in-non-small-cell-lung-cancer
#1
Da Yao, Peigui Gu, Youyu Wang, Weibin Luo, Huiliang Chi, Jianjun Ge, Youhui Qian
To assure the faithful chromosome segregation, cells make use of the spindle assembly checkpoint (SAC), which can be activated in aneuploidy cancer cells. In this study, the efficacies of inhibiting Polo-like kinase 1 (PLK1) on the radiosensitization of non-small cell lung cancer (NSCLC) cells were studied. Clonogenic survival assay was performed to identify the effects of the PLK1 inhibitor on radiosensitivity within NSCLC cells. Mitotic catastrophe assessment was used to measure the cell death and γH2AX foci were utilized to assess the DNA double-strand breaks (DSB)...
October 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29036455/jlcs-medical-practice-guidelines-for-thymic-tumors-summary-of-recommendations
#2
Kohei Yokoi, Kazuya Kondo, Kiminori Fujimoto, Masaki Hara, Yoshihisa Kadota, Koji Kawaguchi, Hideo Kunitoh, Yoshihiro Matsuno, Jun Nakajima, Makoto Nishio, Kazuhiko Ogawa, Mitsugu Omasa
The Guideline Committee of the Japan Lung Cancer Society (JLCS) for Thymic Tumors published the Medical Practice Guideline for Thymic Tumors in Japanese as Chapter 3 of the Medical Practice Guidelines for Lung Cancers according to evidence-based medicine in December 2016. This medical practice guideline is the first for thymic epithelial tumors in Japan, and comprises a set of recommendations covering clinical diagnosis, treatment and pathological diagnosis. Thymic epithelial tumors include thymoma, thymic carcinoma and thymic neuroendocrine tumor...
September 21, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29034687/predictors-of-placement-of-inpatient-palliative-care-consult-orders-among-patients-with-breast-lung-and-colon-cancer-in-a-safety-net-hospital-system
#3
Lauren N Smith, Ramona L Rhodes, Lei Xuan, Ethan A Halm
BACKGROUND: The provision of palliative and end-of-life care to patients who are underrepresented and underserved provides unique challenges and opportunities. OBJECTIVES: To examine predictors of placement of inpatient palliative care consult orders among patients with breast, lung, and colorectal cancer hospitalized in a safety net hospital in 2010. METHODS: Simple and multivariable logistic regression of data on selected patients with cancer was performed to identify predictors of placement of inpatient palliative care consult orders...
January 1, 2017: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/29034482/deep-reinforcement-learning-for-automated-radiation-adaptation-in-lung-cancer
#4
Huan-Hsin Tseng, Yi Luo, Sunan Cui, Jen-Tzung Chien, Randall K Ten Haken, Issam El Naqa
PURPOSE: To investigate deep reinforcement learning (DRL) based on historical treatment plans for developing automated radiation adaptation protocols for non-small cell lung cancer (NSCLC) patients that aim to maximize tumor local control at reduced rates of radiation pneumonitis grade 2 (RP2). METHODS: In a retrospective population of 114 NSCLC patients who received radiotherapy, a 3-component neural networks framework was developed for deep reinforcement learning (DRL) of dose fractionation adaptation...
October 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/29031611/dose-to-mass-for-evaluation-and-optimization-of-lung-cancer-radiation-therapy
#5
William Tyler Watkins, Joseph A Moore, Geoffrey D Hugo, Jeffrey V Siebers
PURPOSE: To evaluate potential organ at risk dose-sparing by using dose-mass-histogram (DMH) objective functions compared with dose-volume-histogram (DVH) objective functions. METHODS: Treatment plans were retrospectively optimized for 10 locally advanced non-small cell lung cancer patients based on DVH and DMH objectives. DMH-objectives were the same as DVH objectives, but with mass replacing volume. Plans were normalized to dose to 95% of the PTV volume (PTV-D95v) or mass (PTV-D95m)...
October 11, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29030353/rad50-expression-is-associated-with-poor-clinical-outcomes-after-radiotherapy-for-resected-non-small-cell-lung-cancer
#6
Yifan Wang, Jayanthi Gudikote, Uma Giri, Jun Yan, Weiye Deng, Rui Ye, Wen Jiang, Nan Li, Brian Hobbs, Jing Wang, Stephen G Swisher, Junya Fujimoto, Ignacio Ivan Wistuba, Ritsuko Komaki, John Heymach, Steven H Lin
PURPOSE: Although postoperative radiotherapy is often used to maintain local control after surgical resection and chemotherapy for locally advanced non-small cell lung cancer (NSCLC), both locoregional failure and distant metastasis remain problematic.  The mechanisms of therapeutic resistance remain poorly understood.    Experimental Design: We used reverse-phase protein arrays (RPPAs) to profile the baseline expression of 170 total and phosphorylated proteins in 70 NSCLC cell lines to categorize pathways that may contribute to radiation resistance...
October 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29029885/cost-effectiveness-of-thoracic-radiation-therapy-for-extensive-stage-small-cell-lung-cancer-using-evidence-from-the-chest-radiotherapy-extensive-stage-small-cell-lung-cancer-trial-crest
#7
Grace I Patrice, Nataniel H Lester-Coll, James B Yu, Jordan Amdahl, Thomas E Delea, Stephen J Patrice
PURPOSE: The Chest Radiotherapy Extensive-Stage Small Cell Lung Cancer Trial (CREST) showed that adding thoracic radiation therapy (TRT) to the standard treatment (ST) paradigm of chemotherapy and prophylactic cranial irradiation improves overall survival and progression-free survival (PFS) in patients with extensive-stage small cell lung cancer (ES-SCLC). We evaluated the cost-effectiveness of adding TRT to ST in ES-SCLC patients. METHODS AND MATERIALS: A cost-utility analysis was performed comparing TRT plus ST versus ST alone...
September 4, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29029832/tumour-auto-contouring-on-2d-cine-mri-for-locally-advanced-lung-cancer-a-comparative-study
#8
Martin F Fast, Björn Eiben, Martin J Menten, Andreas Wetscherek, David J Hawkes, Jamie R McClelland, Uwe Oelfke
BACKGROUND AND PURPOSE: Radiotherapy guidance based on magnetic resonance imaging (MRI) is currently becoming a clinical reality. Fast 2d cine MRI sequences are expected to increase the precision of radiation delivery by facilitating tumour delineation during treatment. This study compares four auto-contouring algorithms for the task of delineating the primary tumour in six locally advanced (LA) lung cancer patients. MATERIAL AND METHODS: Twenty-two cine MRI sequences were acquired using either a balanced steady-state free precession or a spoiled gradient echo imaging technique...
October 10, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29029767/pet-ct-and-pet-mri-in-head-and-neck-malignancy
#9
REVIEW
T A Szyszko, G J R Cook
Combined 2-[(18)F]-fluoro-2-deoxy-d-glucose (FDG) positron-emission tomography (PET)/computed tomography (CT) has an established role in the staging of difficult cases of head and neck (HN) squamous cell carcinoma (SCC), looking for an unknown primary, assessing response post-chemotherapy at 3-6 months, and differentiating relapse from treatment effects in patients suspected to have tumour recurrence. The PET NECK trial, comparing PET/CT surveillance versus neck dissection in advanced head and neck cancer showed survival was similar among patients who underwent PET/CT-guided surveillance and those who underwent planned neck dissection, but surveillance was more cost-effective...
October 10, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29029445/microrna-200c-increases-radiosensitivity-of-human-cancer-cells-with-activated-egfr-associated-signaling
#10
Taeryool Koo, Bong Jun Cho, Dan Hyo Kim, Ji Min Park, Eun Jung Choi, Hans H Kim, David J Lee, In Ah Kim
MicroRNA-200c (miR-200c) recently was found to have tumor-suppressive properties by inhibiting the epithelial-mesenchymal transition (EMT) in several cancers. miR-200c also interacts with various cellular signaling molecules and regulates many important signaling pathways. In this study, we investigated the radiosensitizing effect of miR-200c and its mechanism in a panel of human cancer cell lines. Malignant glioma (U251, T98G), breast cancer (MDA-MB-468), and lung carcinoma (A549) cells were transfected with control pre-microRNA, pre-miR-200c, or anti-miR-200c...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29028221/quality-of-life-and-patient-reported-outcomes-following-proton-radiation-therapy-a-systematic-review
#11
REVIEW
Vivek Verma, Charles B Simone, Mark V Mishra
Background: As costs of cancer care rise, the importance of documenting value in oncology increases. Proton beam radiotherapy (PBT) has the potential to reduce toxicities in cancer patients, but is relatively expensive and unproven. Evaluating quality of life (QOL) and patient-reported outcomes (PROs) is essential to establishing PBT's "value" in oncologic therapy. The goal of this systematic review was to assess QOL and PROs in patients treated with PBT. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-guided systematic searches were conducted...
April 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29024929/inhibition-of-microrna-21-5p-promotes-the-radiation-sensitivity-of-non-small-cell-lung-cancer-through-hmsh2
#12
Yu Song, Yun Zuo, Xiao-Lan Qian, Zhi-Peng Chen, Shao-Kai Wang, Lei Song, Li-Ping Peng
BACKGROUND: This study aimed to explore the effects of microRNA-21-5p (miR-21-5p) on the radiation sensitivity of non-small cell lung cancer (NSCLC) and the involvement of human MutS homolog 2 (hMSH2) One hundred fourteen NSCLC patients at stage II or III who received surgery and postoperative radiotherapy were enrolled in this study. METHODS: The patients were assigned into radiation-sensitive and -insensitive groups. NSCLC A549 cells were transfected to generate control, Negative control (NC), miR-21-5p inhibitor, miR-21-5p mimic, small interfering hMSH2 (sihMSH2), miR-21-5p inhibitor + sihMSH2 and hMSH2 overexpression groups...
October 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29024297/reducing-dose-to-the-lungs-through-loosing-target-dose-homogeneity-requirement-for-radiotherapy-of-non-small-cell-lung-cancer
#13
Junjie Miao, Hui Yan, Yuan Tian, Pan Ma, Zhiqiang Liu, Minghui Li, Wenting Ren, Jiayun Chen, Ye Zhang, Jianrong Dai
It is important to minimize lung dose during intensity-modulated radiation therapy (IMRT) of nonsmall cell lung cancer (NSCLC). In this study, an approach was proposed to reduce lung dose by relaxing the constraint of target dose homogeneity during treatment planning of IMRT. Ten NSCLC patients with lung tumor on the right side were selected. The total dose for planning target volume (PTV) was 60 Gy (2 Gy/fraction). For each patient, two IMRT plans with six beams were created in Pinnacle treatment planning system...
October 11, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29017827/subjective-global-assessment-sga-score-could-be-a-predictive-factor-for-radiation-pneumonitis-in-lung-cancer-patients-with-normal-pulmonary-function-treated-by-intensity-modulated-radiation-therapy-and-concurrent-chemotherapy
#14
Li Ma, WenFeng Ye, QiWen Li, Bin Wang, GuangYu Luo, ZhaoLin Chen, SuPing Guo, Bo Qiu, Hui Liu
INTRODUCTION: To investigate the relationship between malnutrition and the severity of radiation pneumonitis (RP) in patients with lung cancer with normal baseline pulmonary function and lungs' V20 < 35% treated by intensity-modulated radiation therapy (IMRT) and concurrent chemotherapy. MATERIALS AND METHODS: A total of 150 patients with lung cancer who received definitive IMRT (≥ 60 Gy) and concurrent chemotherapy were enrolled. In the condition of normal baseline pulmonary function and strict constraints of the irradiation dose to normal lung tissues, we recorded Eastern Cooperative Oncology Group score; concurrent chemotherapy; clinical stage; the level of albumin (ALB), hemoglobin, and C-reactive protein; Subjective Global Assessment (SGA) scores; radiation esophagitis grade; V20 of lungs; and mean lung dose...
September 19, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/29016814/early-post-treatment-assessment-of-mri-perfusion-biomarkers-can-predict-long-term-response-of-lung-cancer-brain-metastases-to-stereotactic-radiosurgery
#15
Neil K Taunk, Jung Hun Oh, Amita Shukla-Dave, Kathryn Beal, Behroze Vachha, Andrei Holodny, Vaios Hatzoglou
Background: Imaging criteria to evaluate the response of brain metastases to stereotactic radiosurgery (SRS) in the early post-treatment period remains a crucial unmet need. The aim of this study is to correlate early (within 12 weeks) post-treatment perfusion MRI changes with long-term outcomes after treatment of lung cancer brain metastases with SRS. Methods: Pre- and post-treatment perfusion MRI scans were obtained in patients treated with SRS for intact non-small cell lung cancer brain metastases...
August 24, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28993195/effect-of-trichostatin-a-on-radiation-induced-epithelial-mesenchymal-transition-in-a549%C3%A2-cells
#16
SunilGowda Sunnaghatta Nagaraja, Vishnuvarthan Krishnamoorthy, Raghavi Raviraj, Alagudinesh Paramasivam, Devipriya Nagarajan
Radiotherapy is used to treat tumors of different origins and nature, but often lead to development of radioresistance and metastasis of cells. Interestingly, radiation induces epithelial-mesenchymal transition (EMT), a process by which epithelial cells undergo mesenchymal phenotype and stimulates tumor progression capability. Our study investigated the effect of Trichostatin A (TSA), a natural derivate isolated from Streptomyces, upon radiation-induced lung EMT and we tried to understand the role of signaling molecules in irradiated lung cancer cells (A549)...
October 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28992088/carbon-ion-radiotherapy-for-patients-with-advanced-stage-non-small-cell-lung-cancer-at-multicenters
#17
Masataka Karube, Naoyoshi Yamamoto, Yoshiyuki Shioyama, Junichi Saito, Akira Matsunobu, Tamaki Okimoto, Tatsuya Ohno, Hiroshi Tsuji, Takashi Nakano, Tadashi Kamada
Carbon-ion radiation therapy (CIRT) for advanced non-small-cell lung cancer (NSCLC) has not been well studied to date. This paper aimed to analyze a retrospective multicenter survey for detecting problems with the use of CIRT for Stage II and III NSCLC (7th UICC TNM Staging System). Inclusion was restricted to patients with Stage II and III NSCLC who received CIRT from November 2003 to December 2014. We gathered the data from three CIRT operating centers on July 2015. Patients with radiotherapy history, patients with cancers other than lung cancer, and those receiving palliative therapies were excluded...
July 14, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28991003/site-specific-solid-cancer-mortality-following-exposure-to-ionizing-radiation-a-cohort-study-of-workers-inworks
#18
David B Richardson, Elisabeth Cardis, Robert D Daniels, Michael Gillies, Richard Haylock, Klervi Leuraud, Dominique Laurier, Monika Moissonnier, Mary K Schubauer-Berigan, Isabelle Thierry-Chef, Ausrele Kesminiene
BACKGROUND: There is considerable scientific interest in associations between protracted low-dose exposure to ionizing radiation and the occurrence of specific types of cancer. METHODS: Associations between ionizing radiation and site-specific solid cancer mortality were examined among 308,297 nuclear workers employed in France, the United Kingdom, and the United States. Workers were monitored for external radiation exposure and follow-up encompassed 8.2 million person-years...
October 4, 2017: Epidemiology
https://www.readbyqxmd.com/read/28988893/radiation-therapy-of-synchronous-bilateral-breast-carcinoma-sbbc-using-multiple-techniques
#19
Sung Jin Kim, Mi Jo Lee, Seon Min Youn
The purpose of this study was to establish intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) treatment plans for synchronous bilateral breast cancer (SBBC) and to compare those plans with the previous treatment plans using 3D conformal radiation therapy (3DCRT). The differences among the treatments were also statistically compared regarding dosimetry distribution and treatment efficiency. The research was conducted with 10 SBBC patients. The study established IMRT (12 fields with a single isocenter) and VMAT (2 partial arcs with a single isocenter) treatment plans for SBBC patients and then compared those plans with 3DCRT (8 fields with multiple isocenters)...
October 5, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28988243/efficacy-in-treating-lung-metastasis-of-invasive-breast-cancer-with-functional-vincristine-plus-dasatinib-liposomes
#20
Fan Zeng, Rui-Jun Ju, Lei Liu, Hong-Jun Xie, Li-Min Mu, Wan-Liang Lu
BACKGROUND: The metastasis of breast cancer is the leading cause of death, while lung metastasis is a major clinical phenomenon in patients with invasive breast cancer. The current treatment option comprising surgery, radiation, and standard chemotherapy cannot achieve a satisfactory effect on the treatment of lung metastasis of breast cancer. In this study, we report the potential of preventing lung metastasis of invasive breast cancer using the newly developed functional vincristine plus dasatinib liposomes...
October 7, 2017: Pharmacology
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