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https://www.readbyqxmd.com/read/28231233/association-of-topoisomerase-ii-top2a-and-dual-specificity-phosphatase-6-dusp6-single-nucleotide-polymorphisms-with-radiation-treatment-response-and-prognosis-of-lung-cancer-in-han-chinese
#1
Tian-Lu Wang, Yang-Wu Ren, He-Tong Wang, Hong Yu, Yu-Xia Zhao
BACKGROUND Mutations of DNA topoisomerase II (TOP2A) are associated with chemotherapy resistance, whereas dual-specificity phosphatase 6 (DUSP6) negatively regulates members of the mitogen-activated protein (MAP) kinase superfamily to control cell proliferation. This study assessed TOP2A and DUSP6 single nucleotide polymorphisms (SNPs) in non-small cell lung cancer (NSCLC) patients for association with chemoradiotherapy responses and prognosis. MATERIAL AND METHODS A total of 140 Chinese patients with histologically confirmed NSCLC were enrolled and subjected to genotyping of TOP2A rs471692 and DUSP6 rs2279574 using Taqman PCR...
February 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28228873/prostate-brachytherapy-seed-migration-to-the-heart-seen-on-cardiovascular-computed-tomographic-angiography
#2
Shilpa Sachdeva, Nneka S Udechukwu, Hossam Elbelasi, Kevin P Landwehr, William H St Clair, Michael A Winkler
Brachytherapy consists of placing radioactive sources into or adjacent to tumors, to deliver conformal radiation treatment. The technique is used for treatment of primary malignancies and for salvage in recurrent disease. Permanent prostate brachytherapy seeds are small metal implants containing radioactive sources of I-125, Pd-103, or Cs-131 encased in a titanium shell. They can embolize through the venous system to the lungs or heart and subsequently be detected by cardiovascular computed tomography. Cardiovascular imagers should be aware of the appearance of migrated seeds, as their presence in the chest is generally benign, so that unnecessary worry and testing are avoided...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28228219/-analysis-of-efficacy-of-surgical-treatment-for-iiia-small-cell-lung-cancer
#3
Xuejun Dou, Zhiyuan Wang, Liang Wang, Weiqiang Lu, Yunlei Ma, Shaofa Xu
BACKGROUND: Small cell lung cancer (SCLC) accounts for nearly 15% of all cases of cancer. As a type of highly invasive tumors, SCLC has high degree of malignancy, early and extensive metastasis, and is sensitive to chemotherapy and radiotherapy. The early treatment response rate of SCLC is high but it can also relapse rapidly without any treatment. Its median survival time is merely four to six months. Although many studies on SCLC have been conducted in recent years, its clinical treatment strategies have remained unchanged...
February 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28226737/4d-lung-tumor-segmentation-via-shape-prior-and-motion-cues
#4
Jung Won Cha, Mohammad M Farhangi, Neal Dunlap, Amir Amini, Jung Won Cha, Mohammad M Farhangi, Neal Dunlap, Amir Amini, Jung Won Cha, Amir Amini, Neal Dunlap, Mohammad M Farhangi
Lung tumor segmentation is important for therapy in the radiation treatment of patients with thoracic malignancies. In this paper, we describe a 4D image segmentation method based on graph-cuts optimization, shape prior and optical flow. Due to small size, the location, and low contrast between the tumor and the surrounding tissue, tumor segmentation in 3D+t is challenging. We performed 4D lung tumor segmentation in 5 patients, and in each case compared the results with the expert-delineated lung nodules. In each case, 4D image segmentation took approximately ten minutes on a PC with AMD Phenom II and 32GB of memory for segmenting tumor in five phases of lung CT data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226732/lung-tumor-boundary-tracking-in-mri-with-moving-mesh-correspondences-for-adaptive-radio-therapy
#5
Nazanin Tahmasebi, Pierre Boulanger, Kumaradevan Punithakumar, Nazanin Tahmasebi, Pierre Boulanger, Kumaradevan Punithakumar, Kumaradevan Punithakumar, Pierre Boulanger, Nazanin Tahmasebi
Delineation of lung tumor regions from magnetic resonance imaging (MRI) poses many difficulties due to MR signal similarities of the region of interest and surrounding area as well as the influence of respiration. However, accurate segmentation of the tumor region is of utmost importance in planning a radiation therapy since a small error can result in some healthy tissues to receive excessive radiation. This study presents a semi-automated method to delineate lung tumor regions from a sequence of MRIs. The proposed method uses a non-rigid image registration framework to propagate the boundaries of the tumor region in MRI acquired during a radiation treatment stage, given manual segmentation on frames acquired during pretreatment stage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226325/lung-ultrasound-in-hemodialysis-a-card-to-be-played
#6
Pierpaolo Di Nicolò, Giacomo Magnoni, Antonio Granata
The end-stage renal disease is characterized by a profound impairment in the regulation of body fluid distribution, and volume assessment in hemodialysis is one of the challenging goals for the nephrologist. To determine a state of euvolemia, different validated techniques have been employed and among them lung ultrasonography (LUS) has recently attracted growing attention on account of its capacity to estimate accurately extra vascular lung water and to detect lung edema even in its early asymptomatic stage, that is, hidden lung congestion...
February 23, 2017: Blood Purification
https://www.readbyqxmd.com/read/28225485/magnetic-resonance-mr-imaging-for-tumor-staging-and-definition-of-tumor-volumes-on-radiation-treatment-planning-in-nonsmall-cell-lung-cancer-a-prospective-radiographic-cohort-study-of-single-center-clinical-outcome
#7
Dan Zhao, Qiaoqiao Hu, Liping Qi, Juan Wang, Hao Wu, Guangying Zhu, Huiming Yu
We investigate the impact of magnetic resonance (MR) on the staging and radiotherapy planning for patients with nonsmall cell lung cancer (NSCLC).A total of 24 patients with NSCLC underwent MRI, which was fused with radiotherapy planning CT using rigid registration. Gross tumor volume (GTV) was delineated not only according to CT image alone (GTVCT), but also based on both CT and MR image (GTVCT/MR). For each patient, 2 conformal treatment plans were made according to GTVCT and GTVCT/MR, respectively. Dose-volume histograms (DVH) for lesion and normal organs were generated using both GTVCT and GTVCT/MR treatment plans...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28222111/a-meta-analysis-of-the-abscopal-effect-in-preclinical-models-is-the-biologically-effective-dose-a-relevant-physical-trigger
#8
Raffaella Marconi, Silvia Strolin, Gianluca Bossi, Lidia Strigari
BACKGROUND: Preclinical in vivo studies using small animals are considered crucial in translational cancer research and clinical implementation of novel treatments. This is of paramount relevance in radiobiology, especially for any technological developments permitted to deliver high doses in single or oligo-fractionated regimens, such as stereotactic ablative radiotherapy (SABR). In this context, clinical success in cancer treatment needs to be guaranteed, sparing normal tissue and preventing the potential spread of disease or local recurrence...
2017: PloS One
https://www.readbyqxmd.com/read/28221860/the-head-start-effect-will-acute-and-delayed-postoperative-mortality-lead-to-improved-survival-with-stereotactic-body-radiation-therapy-for-operable-stage-i-non-small-cell-lung-cancer
#9
Chad G Rusthoven, David A Palma, Suresh Senan, Brian D Kavanagh
No abstract text is available yet for this article.
February 21, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28219206/-correlations-between-genetic-variations-of-glutathione-synthetase-gene-and-the-response-to-platinum-based-chemotherapy-and-prognosis-of-small-cell-lung-cancer-patients
#10
T Feng, H M Li, P Yuan, D K Yu, F Ma, W W Tan, Z L Du, J Yang, Y Huang, D X Lin, B H Xu, W Tan
Objective: To explore the associations between genetic variations of glutathione synthetase gene (GSS) and response to platinum-based chemotherapy of small cell lung cancer(SCLC), and to analyze the influencing factors on survival. Methods: Four haplotype-tagging single nucleotide polymorphisms (htSNPs) of GSS were genotyped by Sequenom MassARRAY methods in 903 SCLC patients who received platinum-based chemotherapy, and had different response and survival time. The associations between genotypes and platinum-based chemotherapy response were measured by odds ratios (OR) and 95% confidence intervals (CI), adjusted for sex, age, smoking, KPS, staging and chemotherapy regiments, by unconditional logistic regression model...
February 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28218614/first-i-in-vivo-i-magnetic-particle-imaging-of-lung-perfusion-in-rats
#11
Xinyi Yedda Zhou, Kenneth Jeffris, Elaine Yu, Bo Zheng, Patrick Goodwill, Payam Nahid, Steven Conolly
Pulmonary embolism (PE), along with the closely related condition of deep vein thrombosis, affect an estimated 600,000 patients in the US per year. Untreated, PE carries a mortality rate of 30%. Because many patients experience mild or non-specific symptoms, imaging studies are necessary for definitive diagnosis of PE. Iodinated CT pulmonary angiography (CTPA) is recommended for most patients, while nuclear medicine-based ventilation/perfusion (V/Q) scans are reserved for patients in whom the use of iodine is contraindicated...
February 20, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28214559/radiation-therapy-for-invasive-breast-cancer-increases-the-risk-of-second-primary-lung-cancer-a-nationwide-population-based-cohort-analysis
#12
Yi-Jhih Huang, Tsai-Wang Huang, Fu-Huang Lin, Chi-Hsiang Chung, Chang-Huei Tsao, Wu-Chien Chien
INTRODUCTION: Although the risk factors for lung cancer are well documented, it remains unclear if previous radiation therapy (RT) to treat breast cancer (BC) increases the incidence of second primary lung cancer. We determined the overall incidence of second primary lung cancer after previous RT for all clinical stages of BC. METHODS: After analyzing the Longitudinal Health Insurance Database, 986,713 individuals were randomly enrolled from 2000 to 2010 for cohort analysis...
January 31, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28213624/oligometastatic-colorectal-cancer-is-single-site-bony-colorectal-metastasis-a-treatable-condition
#13
Noel Cassar, Adrian Ben Cresswell, Brendan Moran
INTRODUCTION: A potentially resectable bony metastasis in the context of oligometastatic colorectal cancer is uncommon. Bony metastases are usually considered a late event with poor prognosis and generally associated with liver and/or lung metastases. INDEX CASE: A previously healthy 33-year-old gentleman, with no family history of colorectal cancer, presented with rectal bleeding and at colonoscopy had a biopsy-proven adenocarcinoma of the rectum, 7 cm from the anal verge...
February 17, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28212561/the-tlr7-agonist-imiquimod-induces-anti-cancer-effects-via-autophagic-cell-death-and-enhances-anti-tumoral-and-systemic-immunity-during-radiotherapy-for-melanoma
#14
Jeong Hyun Cho, Hyo-Ji Lee, Hyun-Jeong Ko, Byung-Il Yoon, Jongseon Choe, Keun-Cheol Kim, Tae-Wook Hahn, Jeong A Han, Sun Shim Choi, Young Mee Jung, Kee-Ho Lee, Yun-Sil Lee, Yu-Jin Jung
Toll-like receptor (TLR) ligands are strongly considered immune-adjuvants for cancer immunotherapy and have been shown to exert direct anti-cancer effects. This study was performed to evaluate the synergistic anti-cancer and anti-metastatic effects of the TLR7 agonist imiquimod (IMQ) during radiotherapy for melanoma. The pretreatment of B16F10 or B16F1 cells with IMQ combined with γ-ionizing radiation (IR) led to enhanced cell death via autophagy, as demonstrated by increased expression levels of autophagy-related genes, and an increased number of autophagosomes in both cell lines...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28211612/genetic-variants-in-the-plasminogen-activator-inhibitor-1-gene-are-associated-with-an-increased-risk-of-radiation-pneumonitis-in-lung-cancer-patients
#15
Bo Liu, Yang Tang, Minxiao Yi, Qingxu Liu, Huihua Xiong, Guangyuan Hu, Xianglin Yuan
Plasminogen activator inhibitor-1 (PAI-1) plays a crucial role in the process of lung injury, although its association with radiation pneumonitis (RP) is unclear. We hypothesized that genetic variants in PAI-1 may influence the risk of RP. In this study, 169 lung cancer patients were genotyped for six single-nucleotide polymorphisms in PAI-1 using the Sequenom MassARRAY system. The risk of RP was evaluated by Cox proportional hazards analyses. The cumulative RP probabilities by genotype were assessed using Kaplan-Meier analyses...
February 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28209906/first-evaluation-of-pet-based-human-biodistribution-and-dosimetry-of-18-f-faza-a-tracer-for-imaging-tumor-hypoxia
#16
Savi Annarita, Elena Incerti, Federico Fallanca, Valentino Bettinardi, Francesca Rossetti, Cristina Monterisi, Antonia Compierchio, Giampiero Negri, Piero Zannini, Luigi Gianolli, Maria Picchio
Fluorine-18 labelled fluoroazomycinarabinoside ((18)F-FAZA) is a positron emission tomography (PET) biomarker for non-invasive identification of regional tumor hypoxia. Aim of the present Phase I study was to firstly evaluate in non-small cell lung cancer patients the human biodistribution and dosimetry of (18)F-FAZA. Methods: Five patients awaiting surgical resection after histologically proven or radiologically suspected non-small cell lung cancer were prospectively enrolled for the study. The patients underwent a PET/computed tomography (CT) study after the injection of 371±32 MBq of (18)F-FAZA...
February 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28208709/human-exposure-to-electromagnetic-fields-from-parallel-wireless-power-transfer-systems
#17
Feng Wen, Xueliang Huang
The scenario of multiple wireless power transfer (WPT) systems working closely, synchronously or asynchronously with phase difference often occurs in power supply for household appliances and electric vehicles in parking lots. Magnetic field leakage from the WPT systems is also varied due to unpredictable asynchronous working conditions. In this study, the magnetic field leakage from parallel WPT systems working with phase difference is predicted, and the induced electric field and specific absorption rate (SAR) in a human body standing in the vicinity are also evaluated...
February 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208579/role-of-autophagy-and-apoptosis-in-non-small-cell-lung-cancer
#18
REVIEW
Guangbo Liu, Fen Pei, Fengqing Yang, Lingxiao Li, Amit Dipak Amin, Songnian Liu, J Ross Buchan, William C Cho
Non-small-cell lung cancer (NSCLC) constitutes 85% of all lung cancers, and is the leading cause of cancer-related death worldwide. The poor prognosis and resistance to both radiation and chemotherapy warrant further investigation into the molecular mechanisms of NSCLC and the development of new, more efficacious therapeutics. The processes of autophagy and apoptosis, which induce degradation of proteins and organelles or cell death upon cellular stress, are crucial in the pathophysiology of NSCLC. The close interplay between autophagy and apoptosis through shared signaling pathways complicates our understanding of how NSCLC pathophysiology is regulated...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208025/aeol-10150-mitigates-radiation-induced-lung-injury-in-the-nonhuman-primate-morbidity-and-mortality-are-administration-schedule-dependent
#19
Thomas J MacVittie, Allison Gibbs, Ann M Farese, Kory Barrow, Alexander Bennett, Cheryl Taylor-Howell, Abdul Kazi, Karl Prado, George Parker, William Jackson Iii
Pneumonitis and fibrosis are potentially lethal, delayed effects of acute radiation exposure. In this study, male rhesus macaques received whole-thorax lung irradiation (WTLI) with a target dose of 10.74 Gy prescribed to midplane at a dose rate of 0.80 ± 0.05 Gy/min using 6 MV linear accelerator-derived photons. The study design was comprised of four animal cohorts: one control and three treated with AEOL 10150 (n = 20 animals per cohort). AEOL 10150, a metalloporphyrin antioxidant, superoxide dismutase mimetic was administered by daily subcutaneous injection at 5 mg/kg in each of three schedules, beginning 24 ± 2 h postirradiation: from day 1 to day 28, day 1 to day 60 or a divided regimen from day 1 to day 28 plus day 60 to day 88...
February 16, 2017: Radiation Research
https://www.readbyqxmd.com/read/28205183/large-primary-pleural-synovial-sarcoma-with-severe-dyspnea-a-case-report
#20
Minoru Yamaki, Shuji Yonehara, Toshio Noriyuki
BACKGROUND: Synovial sarcoma is a malignant neoplasm of soft tissues. It occurs mainly in the extremities and is closely related to tendons, tendon sheaths, and bursal structures. Primary synovial sarcoma of the pleura and lungs is extremely rare. CASE PRESENTATION: We present the case of a 62-year-old man with a large synovial sarcoma of the left pleura. He presented with general fatigue and severe dyspnea. Chest computed tomography (CT) revealed a 20-cm tumor in the left thoracic cavity...
December 2017: Surgical Case Reports
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