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https://www.readbyqxmd.com/read/28068937/the-efficacy-and-roles-of-combining-temozolomide-with-whole-brain-radiotherapy-in-protection-neurocognitive-function-and-improvement-quality-of-life-of-non-small-cell-lung-cancer-patients-with-brain-metastases
#1
Xia Deng, Zhen Zheng, Baochai Lin, Huafang Su, Hanbin Chen, Shaoran Fei, Zhenghua Fei, Lihao Zhao, Xiance Jin, Cong-Ying Xie
BACKGROUND: Brain metastasis (BM) is a poor prognostic factor for non-small-cell lung cancer (NSCLC). The efficacy and roles of combining temozolomide (TMZ) with whole brain radiotherapy (WBRT) in protection neurocognitive function (NCF) and improvement quality of life (QOL) were investigated and compared with WBRT alone in the treatment of NSCLC patients with BM. METHODS: A total of 238 NSCLC patients with BM were reviewed and categorized into WBRT plus TMZ (RCT) arm and WBRT alone (RT), respectively...
January 10, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28063862/anxiety-after-diagnosis-predicts-lung-cancer-specific-and-overall-survival-in-patients-with-stage-iii-non-small-cell-lung-cancer-a-population-based-cohort-study
#2
Andrea Vodermaier, Sarah Lucas, Wolfgang Linden, Robert Olson
CONTEXT: The question as to whether anxiety and depression are related to mortality in patients with lung cancer is inconclusive. OBJECTIVE: Therefore, the present study is examining associations of anxiety and depression in a large representative sample of patients with stage III non-small cell lung cancer. METHODS: Patients (n=684) were routinely assessed for anxiety and depression with the PsychoSocial Screen for Cancer (PSSCAN) questionnaire after diagnosis of lung cancer and before treatment initiation between 2004 and 2010...
January 4, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28057059/invasive-pneumococcal-disease-caused-by-mucoid-serotype-3-streptococcus-pneumoniae-a-case-report-and-literature-review
#3
Naomi Sugimoto, Yuka Yamagishi, Jun Hirai, Daisuke Sakanashi, Hiroyuki Suematsu, Naoya Nishiyama, Yusuke Koizumi, Hiroshige Mikamo
BACKGROUND: Among the different serotypes of Streptococcus pneumoniae, serotype 3 has received global attention. We report the fatal case of a 76-year-old Japanese man who had an invasive pneumococcal disease associated with pneumonia caused by serotype 3 S. pneumoniae. CASE PRESENTATION: The patient had a history of hypertension, laryngeal cancer, chronic obstructive pulmonary disease, and type 2 diabetes mellitus. Following a cerebral arteriovenous malformation hemorrhage, he underwent surgery to remove the hematoma and began rehabilitation...
January 4, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28055956/circulating-exosomal-micrornas-as-prognostic-biomarkers-for-non-small-cell-lung-cancer
#4
Qingyun Liu, Zubin Yu, Shuai Yuan, Weijia Xie, Chengying Li, Zeyao Hu, Ying Xiang, Na Wu, Long Wu, Li Bai, Yafei Li
Exosomal miRNAs are proposed as excellent candidate biomarkers for clinical applications. However, little is known about their potential roles as prognostic biomarkers in lung cancer. In this study, we explored the prognostic value of plasma exosomal microRNAs (miRNAs) for non-small-cell lung cancer (NSCLC). Using a quantitative polymerase chain reaction (qPCR) array panel, we analyzed 84 plasma exosomal miRNAs in 10 lung adenocarcinoma patients and 10 matched healthy controls. The qPCR array showed 30 aberrantly expressed exosomal miRNAs...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28048901/su-f-t-627-a-conformity-index-study-of-sbrt-plans-for-lung-cancer-patient
#5
Dengsong Zhu, Guoqing Fan, Chong Peng, Carlos Austerlitz
PURPOSE: To evaluate the conformity index for SBRT lung plan in Eclipse (version 11) treatment planning system. METHODS: In the Eclipse treatment planning system the conformity index was defined as VRI/TV, where VRI is prescription isodose surface, and TV is the target volume. In 1997, Van't Riet et al introduced TVRI/TV × TVRI/VRI as a conformal index, where TVRI is the target volume closed by the prescription isodose surface. We chose a lung cancer patient who was assigned to be treated with SBRT...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048554/th-ab-202-03-a-novel-tool-for-computing-deliverable-doses-in-dynamic-mlc-tracking-treatments
#6
M Fast, C Kamerling, S Crijns, M Menten, S Nill, B Raaymakers, U Oelfke
PURPOSE: In tracked dynamic multi-leaf collimator (MLC) treatments, segments are continuously adapted to the target centroid motion in beams-eye-view. On-the-fly segment adaptation, however, potentially induces dosimetric errors due to the finite MLC leaf width and non-rigid target motion. In this study, we outline a novel tool for computing the 4d dose of lung SBRT plans delivered with MLC tracking. METHODS: The following automated workflow was developed: A) centroid tracking, where the initial segments are morphed to each 4dCT phase based on the beams-eye-view GTV shift (followed by a dose calculation on each phase); B) re-optimized tracking, in which all morphed initial plans from (A) are further optimised ("warm-started") in each 4dCT phase using the initial optimisation parameters but phase-specific volume definitions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048230/su-g-206-15-effects-of-dose-reduction-on-emphysema-score
#7
P Lo, S Young, J Hoffman, M Wahi-Anwar, H Kim, M McNitt-Gray
PURPOSE: The purpose of this study was to investigate the effects of reducing radiation dose levels on emphysema scores from lung cancer screening CT exams. METHODS: 52 cases were selected from the National Lung Screening Trial (NLST) patients for which we had both the image series and the raw CT data. All scans were acquired with fixed effective mAs (25 for standard-sized patients, 40 for large patients) on a 64-slice scanner (Sensation 64, Siemens Healthcare) using 120kV, 64×0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048178/su-f-t-674-in-vitro-study-of-5-aminolevulinic-acid-mediated-photo-dynamic-therapy-in-human-cancer-cell-lines
#8
D Cvetkovic, B Wang, R Gupta, C Ma
PURPOSE: Photodynamic therapy (PTD) is a promising cancer treatment modality. 5-sminolevulinic acid (ALA) is a clinically approved photosensitizer. Here we studied the effect of 5-ALA administration with irradiation on several cell lines in vitro. METHODS: Human head and neck (FaDu), lung (A549) and prostate (LNCaP) cancer cells (104/well) were seeded overnight in 96-well plates (Figure 1). 5-ALA at a range from 0.1 to 30.0mg/ml was added to confluent cells 3h before irradiation in 100ul of culture medium...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048140/mo-fg-campus-jep2-05-mri-guided-single-fraction-boost-delivery-on-individual-axillary-lymph-nodes
#9
T C F van Heijst, N Hoekstra, M E P Philippens, D Eschbach, J J W Lagendijk, H J G D van den Bongard, B van Asselen
PURPOSE: The Utrecht MRI-linac (MRL) design enables new MR-guided radiotherapy (RT) approaches. This is a feasibility study for a single-fraction high dose (boost) to individual lymph nodes (LNs) in breast-cancer patients, after breast-conserving surgery (BCS) and hypofractionated whole-breast irradiation (WBI) with conventional axillary RT (AxRT). METHODS: After written informed consent, 5 breast-cancer patients (cT1-3N0) were enrolled (NL500460.041.14 trial) and underwent 1...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047009/su-f-j-181-an-alternative-patient-alignment-tool-on-tomotherapy-the-first-in-human-megavoltage-topogram-acquisition
#10
L Yang, D Low, P Lee, D Ruan, R Chin, T Kaprealian, M Kamrava, P Kupelian, P Beron, M Steinberg, A Chen, N Agazaryan, S Ray, X Qi
PURPOSE: To show the first in-human Megavoltage (MV)-Topogram acquisition for the evaluation of the potential for MV-Topogram-based alignment as an alternative to MVCT for reducing dose and imaging time. METHODS: A lung cancer patient was enrolled in an ongoing IRB-approved clinical trial at our institute. The patient was set up using the clinical protocol employing positioning lasers. 3.2mm diameter tungsten spheres were placed on the patient's skin at their alignment tattoos to check surface-based marker concordance between topograms and MVCT...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046526/th-ab-207a-12-ct-lung-cancer-screening-and-the-effects-of-further-dose-reduction-on-cad-performance
#11
S Young, P Lo, J Hoffman, H Kim, W Hsu, C Flores, G Lee, M Brown, M McNitt-Gray
PURPOSE: CT lung screening is already performed at low doses. In this study, we investigated the effects of further dose reduction on a lung-nodule CAD detection algorithm. METHODS: The original raw CT data and images from 348 patients were obtained from our local database of National Lung Screening Trial (NLST) cases. 61 patients (17.5%) had at least one nodule reported on the NLST reader forms. All scans were acquired with fixed mAs (25 for standard-sized patients, 40 for large patients) on a 64-slice scanner (Sensation 64, Siemens Healthcare)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046212/su-f-t-677-synergistic-effect-s-of-clotrimazole-on-radiation-cell-survival-of-a549-lung-cancer-cells-in-glucose-vs-galactose-media
#12
G Boss, M Tambasco, M Garakani
PURPOSE: In order to determine the synergistic effect of clotrimazole on radiosensitivity of A549 lung cancer cells, and the effect of oxidative pathways on modulating radiosensitivity, we studied how these cells survived under varying amounts of radiation and clotrimazole as well ass when glucose was switched for galactose media. METHODS: The glucose media was used to determine the presence of any synergistic effect of clotrimazole on radiation using values of radiation and clotrimazole concentrations, varying from 0 - 8 Gy and 0 - 20 µM, respectively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28035020/tobacco-use-and-cancer-risk-in-the-agricultural-health-study
#13
Gabriella Andreotti, Neal D Freedman, Debra T Silverman, Catherine C Lerro, Stella Koutros, Patricia Hartge, Michael C Alavanja, Dale P Sandler, Laura Beane Freeman
BACKGROUND: Cigarettes are well known to cause cancer, but less is known about the risks of other tobacco products and use of more than one product. METHODS: We examined cancer incidence in relation to exclusive use of six tobacco products (cigarettes, other combustibles (pipe, cigar, cigarillo), and smokeless tobacco (chewing tobacco, snuff)) in the Agricultural Health Study. We also examined the added cancer risks associated with use of cigarettes and other tobacco products...
December 29, 2016: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28033121/evaluation-of-pet-texture-features-with-heterogeneous-phantoms-complementarity-and-effect-of-motion-and-segmentation-method
#14
M Carles, I Torres-Espallardo, A Alberich-Bayarri, C Olivas, P Bello, U Nestle, L Martí-Bonmatí
A major source of error in quantitative PET/CT scans of lung cancer tumors is respiratory motion. Regarding the variability of PET texture features (TF), the impact of respiratory motion has not been properly studied with experimental phantoms. The primary aim of this work was to evaluate the current use of PET texture analysis for heterogeneity characterization in lesions affected by respiratory motion. Twenty-eight heterogeneous lesions were simulated by a mixture of alginate and (18) F-fluoro-2-deoxy-D-glucose (FDG)...
December 29, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28031175/adjuvant-folfox-cetuximab-in-full-ras-and-braf-wildtype-stage-iii-colon-cancer-patients
#15
J Taieb, R Balogoun, K Le Malicot, J Tabernero, E Mini, G Folprecht, J-L Van Laethem, J-F Emile, C Mulot, S Fratté, C-B Levaché, L Saban-Roche, J Thaler, L N Petersen, J Bridgewater, G Perkins, C Lepage, E Van Cutsem, A Zaanan, P Laurent-Puig
BACKGROUND: RAS mutations have been shown to confer resistance to anti-EGFR treatment. We analyzed the results of the PETACC8 trial (cetuximab + FOLFOX vs FOLFOX) in full RAS and BRAF wildtype (WT) patients (pts) with resected stage III colon cancer. METHODS: Exons 2, 3 and 4 of KRAS and NRAS, and BRAF exons 11 and 15, were sequenced using the Ampliseq colon-lung cancer panel version 2, in PETACC8 trial pts who consented to translational research. The impact of cetuximab on time to recurrence (TTR), disease-free survival (DFS) and overall survival (OS) was investigated in pts with tumors harboring RAS & BRAF WT and RAS mutations...
December 28, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28029327/tumor-deposits-in-colorectal-cancer-improving-the-value-of-modern-staging-a-systematic-review-and-meta-analysis
#16
Iris D Nagtegaal, Nikki Knijn, Niek Hugen, Helen C Marshall, Kenichi Sugihara, Tibor Tot, Hideki Ueno, Philip Quirke
Purpose Colorectal cancer (CRC) treatment is largely determined by tumor stage. Despite improvements made in the treatment of various types of metastatic disease, staging has not been refined. The role of tumor deposits (TDs) in staging remains debated. We have assessed the relation of TDs with metastatic pattern to evaluate whether TDs might add significant new information to staging. Methods We performed a systematic literature search that was focused on the role of TDs in CRC. Studies with neoadjuvant-treated patients were excluded...
December 28, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28024697/reversal-of-platinum-drug-resistance-by-the-histone-deacetylase-inhibitor-belinostat
#17
Kenneth Kin-Wah To, Wing-Sum Tong, Li-Wu Fu
OBJECTIVES: To investigate and elucidate the mechanism for the potentiation of cisplatin anticancer activity by belinostat in platinum (Pt)-resistant lung cancer cells. MATERIALS AND METHODS: Combination of cisplatin and belinostat was investigated in two pairs of parental and cisplatin-resistant non-small cell lung cancer (NSCLC) cell lines. The Pt-resistant cell models exhibited overexpression of the efflux transporter ABCC2 and enhanced DNA repair capacity. Cellular accumulation of cisplatin and extent of DNA platination were measured by inductively coupled plasma optical emission spectrometer...
January 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28012793/pet-imaging-of-zirconium-89-labelled-cetuximab-a-phase-i-trial-in-patients-with-head-and-neck-and-lung-cancer
#18
Judith van Loon, Aniek J G Even, Hugo J W L Aerts, Michel Öllers, Frank Hoebers, Wouter van Elmpt, Ludwig Dubois, Anne-Marie C Dingemans, Roy I Lalisang, Pascal Kempers, Boudewijn Brans, Véronique Winnepenninckx, Ernst-Jan Speel, Eric Thunnissen, Kim M Smits, Ronald Boellaard, Danielle J Vugts, Dirk De Ruysscher, Philippe Lambin
BACKGROUND AND PURPOSE: PET imaging of cetuximab uptake may help selecting cancer patients with the highest chance of benefit. The aim of this phase I trial was to determine the safety of the tracer (89)Zr-cetuximab and to assess tumour uptake. METHODS: Two dose schedules were used; two consecutive doses of 60MBq (89)Zr-cetuximab or a single dose of 120MBq, both preceded by 400mg/m(2) of unlabelled cetuximab. Toxicity (CTCAE 3.0) was scored twice weekly. PET-CT scans were acquired on days 4, 5 and 6 (step 1) or 5, 6, 7 (step 2)...
December 21, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28011506/distant-bystander-effect-of-reic-dkk3-gene-therapy-through-immune-system-stimulation-in-thoracic-malignancies
#19
Ken Suzawa, Kazuhiko Shien, Huang Peng, Masakiyo Sakaguchi, Masami Watanabe, Shinsuke Hashida, Yuho Maki, Hiromasa Yamamoto, Shuta Tomida, Junichi Soh, Hiroaki Asano, Kazunori Tsukuda, Yasutomo Nasu, Hiromi Kumon, Shinichiro Miyoshi, Shinichi Toyooka
BACKGROUND: Reduced expression in immortalized cell (REIC)/Dickkoph-3 (DKK3) is a tumor-suppressor gene, and its overexpression by adenovirus vector (Ad-REIC) exhibits a remarkable therapeutic effect on various human cancer types through a mechanism triggered by endoplasmic reticulum stress. MATERIALS AND METHODS: We examined the direct anti-tumor effect of Ad-REIC gene therapy on lung cancer and malignant mesothelioma cell lines in vitro, and the distant bystander effect using immunocompetent mouse allograft models with bilateral flank tumors...
January 2017: Anticancer Research
https://www.readbyqxmd.com/read/27992190/unveiling-the-variability-of-quartz-hazard-in-light-of-recent-toxicological-findings
#20
Cristina Pavan, Bice Fubini
The variability of quartz hazard stands as one of the most puzzling issues in particle toxicology, notwithstanding the fact that silicosis, the most ancient occupational disease, was the very topic from which the study of the toxicity of particulates developed. Over the years, other adverse effects of silica particles (i.e., lung cancer and autoimmune diseases) were detected and described. However, a few gaps are still present in the physicochemical determinants and cellular pathways involved in the mechanisms of silica pathogenicity...
December 19, 2016: Chemical Research in Toxicology
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