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https://www.readbyqxmd.com/read/29753869/dexamethasone-alleviates-pemetrexed-induced-senescence-in-non-small-cell-lung-cancer
#1
Haiyan Ge, Jun Ke, Nuo Xu, Hongqing Li, Jin Gong, Xiangyang Li, Yuanlin Song, Huili Zhu, Chunxue Bai
Pemetrexed (PEM) is a novel and multi-targeted antifolate used as an antineoplastic agent for non-small cell lung cancer (NSCLC) and pleural mesothelioma. Although glucocorticoid was often used with PEM to reduce toxicity during the chemotherapy, it is not clear yet whether glucocorticoid co-administration could affect PEM efficacy in NSCLC. Here we established NSCLC cell lines and examined the effects of dexamethasone (DEX) on PEM sensitivity in vitro and in xenograft models. DEX co-administration reduced chemotherapy sensitivity to PEM in xenograft models...
May 10, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29738812/dosimetry-of-inhaled-elongate-mineral-particles-in-the-respiratory-tract-the-impact-of-shape-factor
#2
Bahman Asgharian, T Price Owen, Eileen D Kuempel, Annie M Jarabek
Inhalation exposure to some types of fibers (e.g., asbestos) is well known to be associated with respiratory diseases and conditions such as pleural plaques, fibrosis, asbestosis, lung cancer, and mesothelioma. In recent years, attention has expanded to other types of elongate mineral particles (EMPs) that may share similar geometry with asbestos fibers but which may differ in mineralogy. Inhalability, dimensions and orientation, and density are major determinants of the aerodynamic behavior for fibers and other EMPs; and the resultant internal dose is recognized as being the critical link between exposure and pathogenesis...
May 5, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29723687/new-insights-on-diagnostic-reproducibility-of-biphasic-mesotheliomas-a-multi-institutional-evaluation-by-the-international-mesothelioma-panel-from-the-mesopath-reference-center
#3
F Galateau Salle, N Le Stang, A G Nicholson, D Pissaloux, A Churg, S Klebe, V Roggli, H Tazelaar, J M Vignaud, R Attanoos, M B Beasley, H Begueret, F Capron, L Chirieac, M C Copin, S Dacic, C Danel, A Foulet-Roge, A Gibbs, S Giusiano-Courcambeck, K Hiroshima, V Hofman, A Husain, K Kerr, A Marchevsky, K Nabeshima, J M Picquenot, I Rouquette, C Sagan, J Sauter, F Thivolet, W D Travis, M S Tsao, B Weynand, F Damiola, A Scherpereel, J C Pairon, S Lantuejoul, V Rusch, N Girard
BACKGROUND: The 2015 WHO classified malignant mesothelioma into epithelioid [EM], biphasic [BM] and sarcomatoid [SM] for prognostic relevance and treatment decisions. The survival of BM is suspected to correlate with the amount of the sarcomatoid component. The criteria for a sarcomatoid component and the interobserver variability between pathologists for identifying this component are not well described. In ambiguous cases, a "transitional"[TM] subtype has been proposed but was not accepted as a specific subtype in the 2015 WHO...
April 30, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29723551/evaluation-of-airborne-asbestos-exposure-from-routine-handling-of-asbestos-containing-wire-gauze-pads-in-the-research-laboratory
#4
Ediberto Garcia, Daniel Newfang, Jayme P Coyle, Charles L Blake, John W Spencer, Leonard G Burrelli, Giffe T Johnson, Raymond D Harbison
Three independently conducted asbestos exposure evaluations were conducted using wire gauze pads similar to standard practice in the laboratory setting. All testing occurred in a controlled atmosphere inside an enclosed chamber simulating a laboratory setting. Separate teams consisting of a laboratory technician, or technician and assistant simulated common tasks involving wire gauze pads, including heating and direct wire gauze manipulation. Area and personal air samples were collected and evaluated for asbestos consistent with the National Institute of Occupational Safety Health method 7400 and 7402, and the Asbestos Hazard Emergency Response Act (AHERA) method...
April 30, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29709904/development-and-evaluation-of-antibody-proteomics-technology-for-rapid-and-comprehensive-identification-of-potential-biomarkers-and-therapeutic-targets
#5
Kazuya Nagano
Proteomics-based analyses are powerful means of identifying potentially useful proteins in the initial stage of drug development. Technological developments in the field of proteomics, and increases in the sensitivity of MS analyses, now facilitate identification and examination of increasingly small amounts of proteins that are differentially expressed in diseased versus normal tissues and can be candidate biomarkers or therapeutic targets. However, the current approach is for candidate proteins to be prioritized by research interest and then validated one by one; this is very inefficient...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29707353/prospective-registry-database-of-patients-with-malignant-mesothelioma-directions-for-a-future-japanese-registry-based-lung-cancer-study
#6
Yasushi Shintani, Seiki Hasegawa, Teruhisa Takuwa, Keisuke Aoe, Katsuya Kato, Nobukazu Fujimoto, Yasuhiro Hida, Masahiro Morise, Yasumitsu Moriya, Takao Morohoshi, Meinoshin Okumura, Ichiro Yoshino
Background: The International Association for the Study of Lung Cancer, in collaboration with members of the International Mesothelioma Interest Group (IMIG), developed a large international database and TNM-based system to study malignant pleural mesothelioma (MPM). However, this database has some limitations since it was a retrospective study and it was based predominantly on surgical cases. The Japanese Joint Committee of Lung Cancer Registry (JJCLCR) employs a project of prospective registry database of patients in Japan with MPM in order to clarify MPM's epidemiology, current management practices, and prognosis and also to investigate the potential capabilities to target the best patients for therapy...
March 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29629675/the-current-aetiology-of-malignant-pleural-effusion-in-the-western-cape-province-south-africa
#7
C F N Koegelenberg, S M Bennji, E Boer, P T Schubert, J A Shaw, B W Allwood, E M Irusen
BACKGROUND: Malignant pleural effusion (MPE) represents a very common cause of pleural exudates, and is one of the most challenging pleural disorders to manage. This could be attributed to the paucity of high-quality experimental evidence, and inconsistent practice worldwide. South Africa (SA) currently has no data regarding the aetiology of MPE. OBJECTIVES: To identify the most common malignancies causing MPE in a population served by a large tertiary hospital in SA, and specifically the relative contribution of mesothelioma...
March 28, 2018: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/29606701/rbl2-p130-is-a-direct-akt-target-and-is-required-to-induce-apoptosis-upon-akt-inhibition-in-lung-cancer-and-mesothelioma-cell-lines
#8
Francesca Pentimalli, Iris M Forte, Luca Esposito, Paola Indovina, Carmelina A Iannuzzi, Luigi Alfano, Caterina Costa, Daniela Barone, Gaetano Rocco, Antonio Giordano
The retinoblastoma (RB) protein family includes RB1/p105, RBL1/p107, and RBL2/p130, which are key factors in cell-cycle regulation and stand at the crossroads of multiple pathways dictating cell fate decisions. The role of RB proteins in apoptosis is controversial because they can inhibit or promote apoptosis depending on the context, on the apoptotic stimuli and on their intrinsic status, impacting on the response to antitumoral treatments. Here we identified RBL2/p130 as a direct substrate of the AKT kinase, a key antiapoptotic factor hyperactive in multiple cancer types...
April 2, 2018: Oncogene
https://www.readbyqxmd.com/read/29581874/old-sonic-hedgehog-new-tricks-a-new-paradigm-in-thoracic-malignancies
#9
REVIEW
Etienne Giroux Leprieur, David M Jablons, Biao He
The Sonic Hedgehog (Shh) pathway is physiologically involved during embryogenesis, but is also activated in several diseases, including solid cancers. Previous studies have demonstrated that the Shh pathway is involved in oncogenesis, tumor progression and chemoresistance in lung cancer and mesothelioma. The Shh pathway is also closely associated with epithelial-mesenchymal transition and cancer stem cells. Recent findings have revealed that a small proportion of lung cancer cells expressed an abnormal full-length Shh protein, associated with cancer stem cell features...
March 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29579286/involvement-of-heparanase-in-the-pathogenesis-of-mesothelioma-basic-aspects-and-clinical-applications
#10
Uri Barash, Moshe Lapidot, Yaniv Zohar, Cynthia Loomis, Andre Moreira, Sari Feld, Chandra Goparaju, Haining Yang, Edward Hammond, Ganlin Zhang, Jin-Ping Li, Neta Ilan, Arnon Nagler, Harvey I Pass, Israel Vlodavsky
Background: Mammalian cells express a single functional heparanase, an endoglycosidase that cleaves heparan sulfate and thereby promotes tumor metastasis, angiogenesis, and inflammation. Malignant mesothelioma is highly aggressive and has a poor prognosis because of the lack of markers for early diagnosis and resistance to conventional therapies. The purpose of this study was to elucidate the mode of action and biological significance of heparanase in mesothelioma and test the efficacy of heparanase inhibitors in the treatment of this malignancy...
March 21, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29571785/low-dose-chest-computed-tomography-screening-of-subjects-exposed-to-asbestos
#11
Katsuya Kato, Kenichi Gemba, Kazuto Ashizawa, Hiroaki Arakawa, Satoshi Honda, Naomi Noguchi, Sumihisa Honda, Nobukazu Fujimoto, Takumi Kishimoto
OBJECTIVES: The primary aim was to reveal the prevalence of lung cancer (LC) and malignant pleural mesothelioma (MPM) in subjects with past asbestos exposure (AE). We also examined pulmonary or pleural changes correlated with the development of LC. MATERIALS AND METHODS: This was a prospective, multicenter, cross-sectional study. There were 2132 subjects enrolled between 2010 and 2012. They included 96.2% men and 3.8% women, with a mean age of 76.1 years; 78.8% former or current smokers; and 21...
April 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29564943/review-of-refractory-ceramic-fiber-rcf-toxicity-epidemiology-and-occupational-exposure
#12
L Daniel Maxim, Mark J Utell
This literature review on refractory ceramic fibers (RCF) summarizes relevant information on manufacturing, processing, applications, occupational exposure, toxicology and epidemiology studies. Rodent toxicology studies conducted in the 1980s showed that RCF caused fibrosis, lung cancer and mesothelioma. Interpretation of these studies was difficult for various reasons (e.g. overload in chronic inhalation bioassays), but spurred the development of a comprehensive product stewardship program under EPA and later OSHA oversight...
March 22, 2018: Inhalation Toxicology
https://www.readbyqxmd.com/read/29554022/clinical-implications-of-real-time-integrative-sequencing-in-management-of-patients-with-suspected-germline-bap1-mutations
#13
Shayan Sengupta, Angela C Weyand, Santhosh A Upadhyaya, Yi-Mi Wu, Dan R Robinson, Rajen J Mody
Germline mutation of BRCA-associated protein-1 has been implicated in the development of tumor predisposition syndrome and high risk for malignant mesothelioma, lung adenocarcinoma, uveal melanoma, and cutaneous melanoma. Here, we present the case of a patient with recurrent metastatic melanoma who was found to have germline BAP1 and somatic BRAF mutation by clinical genomic sequencing. Detection of a germline mutation prompted screening for other cancers and surveillance in family members. Prospective integrative sequencing for pediatric cancer patients may identify pathogenic germline mutations and may improve outcomes and treatment-related morbidity by early diagnosis of malignancy...
March 16, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29553831/exosomes-from-asbestos-exposed-cells-modulate-gene-expression-in-mesothelial-cells
#14
Phillip Munson, Ying-Wai Lam, Julie Dragon, Maximilian MacPherson, Arti Shukla
Asbestos exposure is a determinate cause of many diseases, such as mesothelioma, fibrosis, and lung cancer, and poses a major human health hazard. At this time, there are no identified biomarkers to demarcate asbestos exposure before the presentation of disease and symptoms, and there is only limited understanding of the underlying biology that governs asbestos-induced disease. In our study, we used exosomes, 30-140 nm extracellular vesicles, to gain insight into these knowledge gaps. As inhaled asbestos is first encountered by lung epithelial cells and macrophages, we hypothesize that asbestos-exposed cells secrete exosomes with signature proteomic cargo that can alter the gene expression of mesothelial cells, contributing to disease outcomes like mesothelioma...
March 19, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29550074/phase-i-study-of-intrapleural-gene-mediated-cytotoxic-immunotherapy-in-patients-with-malignant-pleural-effusion
#15
Charu Aggarwal, Andrew R Haas, Susan Metzger, Laura K Aguilar, Estuardo Aguilar-Cordova, Andrea G Manzanera, Gregoria Gómez-Hernández, Sharyn I Katz, Evan W Alley, Tracey L Evans, Joshua M Bauml, Roger B Cohen, Corey J Langer, Steven M Albelda, Daniel H Sterman
Gene-mediated cytotoxic immunotherapy (GMCI) is an immune strategy implemented through local delivery of an adenovirus-based vector expressing the thymidine kinase gene (aglatimagene besadenovec, AdV-tk) followed by anti-herpetic prodrug valacyclovir. A phase I dose escalation trial of GMCI followed by chemotherapy was conducted in patients with malignant pleural effusion (MPE). AdV-tk was administered intrapleurally (IP) in three cohorts at a dose of 1 × 1012 to 1013 vector particles. Primary endpoint was safety; secondary endpoints included response rate, progression-free survival, and overall survival...
May 2, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29538329/update-on-immunohistochemistry-for-the-diagnosis-of-lung-cancer
#16
REVIEW
Kentaro Inamura
Immunohistochemistry is a widely available technique that is less challenging and can provide clinically meaningful results quickly and cost-efficiently in comparison with other techniques. In addition, immunohistochemistry allows for the evaluation of cellular localization of proteins in the context of tumor structure. In an era of precision medicine, pathologists are required to classify lung cancer into specific subtypes and assess biomarkers relevant to molecular-targeted therapies. This review summarizes the hot topics of immunohistochemistry in lung cancer, including (i) adenocarcinoma vs squamous cell carcinoma; (ii) neuroendocrine markers; (iii) ALK, ROS1, and EGFR; (iv) PD-L1 (CD274); (v) lung carcinoma vs malignant mesothelioma; and (vi) NUT carcinoma...
March 14, 2018: Cancers
https://www.readbyqxmd.com/read/29534192/past-and-current-asbestos-exposure-and-future-mesothelioma-risks-in-britain-the-inhaled-particles-study-tips
#17
Clare Gilham, Christine Rake, John Hodgson, Andrew Darnton, Garry Burdett, James Peto Wild, Michelle Newton, Andrew G Nicholson, Leslie Davidson, Mike Shires, Tom Treasure, Julian Peto
Background: Occupational and environmental airborne asbestos concentrations are too low and variable for lifetime exposures to be estimated reliably, and building workers and occupants may suffer higher exposure when asbestos in older buildings is disturbed or removed. Mesothelioma risks from current asbestos exposures are therefore not known. Methods: We interviewed and measured asbestos levels in lung samples from 257 patients treated for pneumothorax and 262 with resected lung cancer, recruited in England and Wales...
March 9, 2018: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29515691/enhanced-il-34-expression-in-nivolumab-resistant-metastatic-melanoma
#18
Nanumi Han, Muhammad Baghdadi, Kozo Ishikawa, Hiraku Endo, Takuto Kobayashi, Haruka Wada, Keisuke Imafuku, Hiroo Hata, Ken-Ichiro Seino
Background: Immunotherapies that target immune-checkpoint molecules such PD-1 have helped to achieve durable responses in melanoma treatment. However, 25% of melanoma patients who showed objective responses to PD-1 blockade develop resistance and suffer from disease progression and ultimately death, which necessitates the identification of related resistance mechanisms.IL-34 is a cytokine that controls the biology of myeloid cell lineage through binding to CSF-1R. IL-34 is importantly involved in the pathogenesis of various diseases...
2018: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29513054/influence-of-inter-observer-delineation-variability-on-radiomics-stability-in-different-tumor-sites
#19
Matea Pavic, Marta Bogowicz, Xaver Würms, Stefan Glatz, Tobias Finazzi, Oliver Riesterer, Johannes Roesch, Leonie Rudofsky, Martina Friess, Patrick Veit-Haibach, Martin Huellner, Isabelle Opitz, Walter Weder, Thomas Frauenfelder, Matthias Guckenberger, Stephanie Tanadini-Lang
BACKGROUND: Radiomics is a promising methodology for quantitative analysis and description of radiological images using advanced mathematics and statistics. Tumor delineation, which is still often done manually, is an essential step in radiomics, however, inter-observer variability is a well-known uncertainty in radiation oncology. This study investigated the impact of inter-observer variability (IOV) in manual tumor delineation on the reliability of radiomic features (RF). METHODS: Three different tumor types (head and neck squamous cell carcinoma (HNSCC), malignant pleural mesothelioma (MPM) and non-small cell lung cancer (NSCLC)) were included...
March 7, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29512799/cardiac-metastases-4-cases-report
#20
Ines Ayedi, Hamed Chaabouni, Malek Akrout, Tahia Boudawara, Nabil Toumi, Afef Khanfir, Mounir Frikha
Cardiac metastases are rare. They are found in one to 10% of autopsies of patients withmalignant neoplasm. Adenocarcinoma represents the most common histologicaltype. The most common neoplasms that metastasize to the heart are lung andbreast cancers, melanoma, mesothelioma and lymphoma. However, Cardiacinvolvement is unusual in Hepatic, cutaneous and gastric cancer. We reportedthese three primary localizations in our cases.
June 2017: La Tunisie Médicale
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