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https://www.readbyqxmd.com/read/28743887/tumor-derived-exosomes-induce-the-formation-of-neutrophil-extracellular-traps-implications-for-the-establishment-of-cancer-associated-thrombosis
#1
Ana C Leal, Daniella M Mizurini, Tainá Gomes, Natalia C Rochael, Elvira M Saraiva, Marcos S Dias, Claudio C Werneck, Micheli S Sielski, Cristina P Vicente, Robson Q Monteiro
Cancer patients are at an increased risk of developing thromboembolic complications. Several mechanisms have been proposed to explain cancer-associated thrombosis including the release of tumor-derived extracellular vesicles and the activation of host vascular cells. It was proposed that neutrophil extracellular traps (NETs) contribute to the prothrombotic phenotype in cancer. In this study, we evaluated the possible cooperation between tumor-derived exosomes and NETs in cancer-associated thrombosis. Female BALB/c mice were orthotopically injected with 4T1 breast cancer cells...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28741598/plasmonic-enhancement-of-cyanine-dyes-for-near-infrared-light-triggered-photodynamic-photothermal-therapy-and-fluorescent-imaging
#2
Mindan Lu, Ning Kang, Chuan Chen, Liuqing Yang, Yang Li, Minghui Hong, Xiangang Luo, Lei Ren, Xiumin Wang
Near infrared (NIR) triggered cyanine dyes have attracted considerable attentions in multi-modal tumor theranostics. However, near infrared (NIR) cyanine dyes used in tumor treatment often suffer from low fluorescence intensity and weak singlet oxygen generation efficiency, resulting in inadequate diagnostic and therapy efficacies for tumors. It is still a great challenge to improve both the photodynamic therapy (PDT) and fluorescent imaging (FLI) efficacy of cyanine dyes in tumor applications. Herein, a novel multifunctional nanoagent of AuNRs@SiO2-IR795 was developed to realize the integrated photothermal/photodynamic therapy (PTT/PDT) and FLI at a very low dosage of IR795 (0...
July 25, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28738680/photothermal-effect-enhanced-cascade-targeting-strategy-for-improved-pancreatic-cancer-therapy-by-gold-nanoshell-mesoporous-silica-nanorod
#3
Ruifang Zhao, Xuexiang Han, Yiye Li, Hai Wang, Tianjiao Ji, Yuliang Zhao, Guangjun Nie
Pancreatic cancer, one of the leading causes of cancer-related mortality, is characterized by desmoplasia and hypovascular cancerous tissue, with a 5-year survival rate of less than 8%. To overcome the severe resistance of pancreatic cancer to conventional therapies, we synthesized gold nanoshell-coated rod-like mesoporous silica (GNRS) nanoparticles which integrated cascade tumor targeting (mediated by photothermal effect and molecular receptor binding) and photothermal treatment-enhanced gemcitabine chemotherapy, under mild near infrared laser irradiation condition...
July 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28738076/the-comparison-of-chca-solvent-compositions-for-improving-lc-maldi-performance-and-its-application-to-study-the-impact-of-aflatoxin-b1-on-the-liver-proteome-of-diabetes-mellitus-type-1-mice
#4
Fuu-Jen Tsai, Shih-Yin Chen, Yu-Ching Liu, Hsin-Yi Liao, Chao-Jung Chen
In nanoflow liquid chromatography-matrix-assisted laser desorption/ionization tandem time-of-flight (nanoLC-MALDI-TOF/TOF) approaches, it is critical to directly apply small amounts of the sample elutes on the sample target using a nanoLC system due to its low flow rate of 200 ~ 300 nl/min. It is recommended to apply a sheath liquid containing a matrix with a several μL/min flow rate at the end of the nanoLC column to ensure a larger co-eluted droplet for more reproducible sample spotting and avoid the laborious task of post-manual matrix spotting...
2017: PloS One
https://www.readbyqxmd.com/read/28737290/integration-of-ir-808-sensitized-upconversion-nanostructure-and-mos2-nanosheet-for-808-nm-nir-light-triggered-phototherapy-and-bioimaging
#5
Jiating Xu, Arif Gulzar, Yuhui Liu, Huiting Bi, Shili Gai, Bin Liu, Dan Yang, Fei He, Piaoping Yang
Near infrared (NIR) light triggered phototherapy including photothermal therapy (PTT) and photodynamic therapy (PDT) affords superior outcome in cancer treatment. However, the reactive oxygen species (ROS) generated by NIR-excited upconversion nanostructure is limited by the feeble upconverted light which cannot activate PDT agents efficiently. Here, an IR-808 dye sensitized upconversion nanoparticle (UCNP) with a chlorin e6 (Ce6)-functionalized silica layer is developed for PDT agent. The two booster effectors (dye-sensitization and core-shell enhancement) synergistically amplify the upconversion efficiency, therefore achieving superbright visible emission under low 808 nm light excitation...
July 24, 2017: Small
https://www.readbyqxmd.com/read/28737100/laser-surgery-versus-radiotherapy-for-t1a-glottic-carcinoma-a-meta-analysis-of-oncologic-outcomes
#6
Guanjiang Huang, Mengsi Luo, Jingxuan Zhang, Hongbing Liu
OBJECTIVES: A meta-analysis was conducted to compare oncologic outcomes for patients of T1a glottic carcinoma who were treated with laser surgery (LS) or radiotherapy (RT). METHODS: All related studies published up to October 2016 were acquired by searching PubMed, EMBASE, and Cochrane were conducted by two authors, with the index words: vocal, glottis, larynx, laser, surgery, cordectomy, radiotherapy, radiation, irradiation, carcinoma, and cancer. Relative studies which compared oncologic outcomes between LS and RT were included...
July 24, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28736778/facile-synthesis-of-black-phosphorus-au-nanocomposites-for-enhanced-photothermal-cancer-therapy-and-surface-enhanced-raman-scattering-analysis
#7
Guangcun Yang, Zhiming Liu, Yi Li, Yuqing Hou, Xixi Fei, Chengkang Su, Songmao Wang, Zhengfei Zhuang, Zhouyi Guo
Black phosphorus (BP), a new type of two-dimensional nanomaterial, has attracted crucial attention in recent years owing to its excellent properties and great potential in various chemical, physical, and biological fields. In this study, BP nanosheets loaded with Au nanoparticles (BP-Au NSs) are obtained by a one-step facile synthetic method. The Au nanostructures can not only enhance the photothermal efficiency of the nanocomposites, but also endow BP-Au NSs with the potential to act as effective surface-enhanced Raman scattering (SERS) substrates for Raman biodetection...
July 24, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28733543/the-role-of-adrenomedullin-in-the-pathogenesis-of-gastric-cancer
#8
Fuhao Qiao, Jian Fang, Jinfeng Xu, Wenqiu Zhao, Ying Ni, Bufugdi Andreas Akuo, Wei Zhang, Yun Liu, Fangfang Ding, Guanlin Li, Baoguo Liu, Hua Wang, Shihe Shao
Adrenomedullin has been shown to be overexpressed in many tumors, including gastric cancer tumors; however, its mechanism of action remains unclear. In this study, we examined the role of adrenomedullin in the pathogenesis of gastric cancer. Using clinical specimens and immunohistochemistry, we found that the expression levels of adrenomedullin and its receptors are inordinately elevated as compared to the adjacent non-tumor gastric tissues. We used siRNA gene silencing, in BGC-823 gastric cancer cell lines, to target adrenomedullin genes, and found that increased adrenomedullin expression results in the proliferation of tumor cells, tumor invasion, and metastasis...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731323/analyzing-liposomal-drug-delivery-systems-in-three-dimensional-cell-culture-models-using-maldi-imaging-mass-spectrometry
#9
Jessica K Lukowski, Eric M Weaver, Amanda B Hummon
Cancer chemotherapeutics often fail to reach all diseased cells. To help solve this problem, researchers are investigating novel drug delivery systems. Liposomes are an attractive option due to their low toxicity, high biocompatibility, and potential to carry a large amount of a drug to the tumor site, all while avoiding being eliminated from the body. This study evaluates the penetration of doxorubicin-encased liposomes into three-dimensional cell cultures, or spheroids. Liposomes composed of lipids containing head groups of phosphatidylcholine (PC), phosphatidylethanolamine (PE), and cholesterol were created by extrusion...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28729400/vessel-targeted-chemophototherapy-with-cationic-porphyrin-phospholipid-liposomes
#10
Dandan Luo, Jumin Geng, Nasi Li, Kevin A Carter, Shuai Shao, G Ekin Atilla-Gokcumen, Jonathan F Lovell
Cationic liposomes have been used for targeted drug delivery to tumor blood vessels, via mechanisms that are not fully elucidated. Doxorubicin (Dox)-loaded liposomes were prepared that incorporate a cationic lipid; 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP), along with a small amount of porphyrin-phospholipid (PoP). Near infrared (NIR) light induced release of entrapped Dox via PoP-mediated DOTAP photo-oxidation. The formulation was optimized to enable extremely rapid NIR light-triggered Dox release (i...
July 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28724284/inter-alpha-inhibitor-h4-as-a-potential-biomarker-predicting-the-treatment-outcomes-in-patients-with-hepatocellular-carcinoma
#11
Eun-Jung Lee, Seung-Hyun Yang, Kyoung-Jin Kim, Hyejung Cha, Seo Jin Lee, Ji-Hye Kim, Junkyu Song, Kyung-Hee Chun, Jinsil Seong
Purpose: Early prediction of treatment outcomes represents an essential step towards increased treatment efficacy and survival in patients with hepatocellular carcinoma (HCC). In this study, we performed two-dimensional electrophoresis (2-DE) followed by protein profiling to identify biomarkers predictive of therapeutic outcomes in patients with HCC who received liver-directed therapy (LDTx) involving local radiotherapy (RT), and studied the underlying mechanisms of the identified proteins...
July 17, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28716090/clinical-workflow-for-mr-only-simulation-and-planning-in-prostate
#12
Neelam Tyagi, Sandra Fontenla, Michael Zelefsky, Marcia Chong-Ton, Kyle Ostergren, Niral Shah, Lizette Warner, Mo Kadbi, Jim Mechalakos, Margie Hunt
PURPOSE: To describe the details and experience of implementing a MR-only workflow in the clinic for simulation and planning of prostate cancer patients. METHODS: Forty-eight prostate cancer patients from June 2016 - Dec 2016 receiving external beam radiotherapy were scheduled to undergo MR-only simulation. MR images were acquired for contouring (T2w axial, coronal, sagittal), synthetic-CT generation (3D FFE-based) and fiducial identification (3D bFFE-based). The total acquisition time was 25 min...
July 17, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28710933/measurement-of-neutron-dose-in-the-compensator-imrt-treatment
#13
Abbas Rezaian, Hassan Ali Nedaie, Nooshin Banaee
A radiation treatment delivery technique, intensity modulated radiation therapy (IMRT), has found widespread use in the treatment of cancers. One of IMRT implementing methods is IMRT compensator based, which the modulation are done by high Z materials. When photons with energies higher than 8MV interact with high Z material in path, Photoneutrons are produced. In this study, the effect of compensator on photoneutron production was investigated. The Monte Carlo code MCNPX was used to calculate the neutron dose equivalent as a function of the depth in phantom with and without compensator...
June 27, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28710483/near-infrared-induced-phase-shifted-icg-fe3o4-loaded-plga-nanoparticles-for-photothermal-tumor-ablation
#14
Chengcheng Niu, Yan Xu, Senbo An, Ming Zhang, Yihe Hu, Long Wang, Qinghai Peng
Near-infrared (NIR) laser-induced photothermal therapy (PTT) uses a photothermal agent to convert optical energy into thermal energy and has great potential as an effective local, minimally invasive treatment modality for killing cancer cells. To improve the efficacy of PTT, we developed poly(lactide-co-glycolide) (PLGA) nanoparticles (NPs) encapsulating superparamagnetic iron oxide (Fe3O4), indocyanine green (ICG), and perfluoropentane (PFP) as synergistic agents for NIR laser-induced PTT. We fabricated a novel type of phase-shifting fluorescent magnetic NPs, Fe3O4/ICG@PLGA/PFP NPs, that effectively produce heat in response to NIR laser irradiation for an enhanced thermal ablation effect and a phase-shift thermoelastic expansion effect, and thus, can be used as a photothermal agent...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28704712/multipurpose-efficacy-of-zno-nanoparticles-coated-by-the-crustacean-immune-molecule-%C3%AE-1-3-glucan-binding-protein-toxicity-on-hepg2-liver-cancer-cells-and-bacterial-pathogens
#15
Arokiadhas Iswarya, Baskaralingam Vaseeharan, Mahalingam Anjugam, Balasubramaniem Ashokkumar, Marimuthu Govindarajan, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Giovanni Benelli
The effective treatment of cancer and bacterial pathogens are two key challenges in modern nanomedicine. Here, zinc oxide nanoparticles (ZnO NPs) were fabricated using the crustacean immune molecule β-1, 3- glucan binding protein (Phβ-GBP, 100kDa) purified from the heamolymph of Paratelphusa hydrodromus. β-GBP coated zinc oxide nanoparticles (Phβ-GBP-ZnO NPs) were characterized by UV-vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and high resolution-transmission electron microscopy (HR-TEM) analyses...
June 24, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28695624/life-quality-improvement-in-hoarse-patients-with-early-glottic-cancer-after-transoral-laser-microsurgery
#16
Li-Jen Hsin, Wan-Ni Lin, Tuan-Jen Fang, Li-Ang Lee, Chung-Jan Kang, Bing-Shan Huang, Chien-Yu Lin, Kang-Hsing Fan, Ngan-Ming Tsang, Cheng-Lung Hsu, Joseph Tung-Chieh Chang, Chun-Ta Liao, Tzu-Chen Yen, Kai-Ping Chang, Hsiu-Feng Chuang, Hsueh-Yu Li
BACKGROUND: The purpose of this study was to evaluate the recovery kinetics of voice and quality of life (QOL) over time in patients with early glottic cancer who underwent transoral laser microsurgery (TLM). METHODS: A prospective cohort study was conducted in which acoustic and aerodynamic voice assessments and QOL analyses were done using health-related questionnaires (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30-questions [EORTC-QLQ-C30] and European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Head and Neck 35-questions [EORTC-QLQ-H&N35]) were administered at designated times...
July 11, 2017: Head & Neck
https://www.readbyqxmd.com/read/28692322/the-use-of-lasers-in-the-treatment-of-skin-cancer-a-review
#17
Fatima N Mirza, Khalil A Khatri
BACKGROUND: In considering skin cancer, a number of factors - including effectiveness, simplicity of treatment, cost, and aesthetic outcomes - are important to ensure patient satisfaction. There are several existing interventions, such as electrodessication and curettage, excision, Mohs surgery, radiation therapy, cryotherapy, and topical/oral treatments. Laser therapy has emerged as a new promising alternative that should be explored. OBJECTIVE: To review the dermatologic literature on the use of laser therapy in the treatment of skin cancer...
July 10, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28688985/mussel-inspired-plga-polydopamine-core-shell-nanoparticle-for-light-induced-cancer-thermochemotherapy
#18
Huacheng He, Eleni Markoutsa, Yihong Zhan, Jiajia Zhang, Peisheng Xu
Most photothermal converting systems are not biodegradable, which bring the uneasiness when they are administered into human body due to the uncertainty of their fate. Hereby, we developed a mussel-inspired PLGA/polydopamine core-shell nanoparticle for cancer photothermal and chemotherapy. With the help of an anti-EGFR antibody, the nanoparticle could effectively enter head and neck cancer cells and convert near-infrared light to heat to trigger drug release from PLGA core for chemotherapy as well as ablate tumors by the elevated temperature...
July 5, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28688872/paraganglioma-of-the-urinary-bladder-a-series-of-22-cases-in-a-single-center
#19
Hongyun Zhai, Xin Ma, Wenyuan Nie, Hongzhao Li, Cheng Peng, Xintao Li, Yu Zhang, Xu Zhang
OBJECTIVE: Paraganglioma of the urinary bladder (PUB) is rare in bladder cancer, and currently, a study examining large number of cases from a single center has not been reported. This study aimed to present the clinical features, treatments, pathological characteristics, and prognosis of PUB. PATIENTS AND METHODS: From January 2006 to June 2016, 22 patients were pathologically diagnosed with PUB in our hospital. Their clinical records, operative notes, pathological reports, and follow-up records were retrospectively reviewed...
March 28, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28688677/long-term-survival-of-a-randomized-phase-iii-trial-of-head-and-neck-cancer-patients-receiving-concurrent-chemoradiation-therapy-with-or-without-low-level-laser-therapy-lllt-to-prevent-oral-mucositis
#20
Héliton S Antunes, Daniel Herchenhorn, Isabele A Small, Carlos M M Araújo, Celia Maria Pais Viégas, Gabriela de Assis Ramos, Fernando L Dias, Carlos G Ferreira
BACKGROUND: The impact of low-level laser therapy (LLLT) to prevent oral mucositis in patients treated with exclusive chemoradiation therapy remains unknown. This study evaluated the overall, disease-free and progression-free survival of these patients. METHODS: Overall, disease-free and progression-free survival of 94 patients diagnosed with oropharynx, nasopharynx, and hypopharynx cancer, who participated on a phase III study, was evaluated from 2007 to 2015. The patients were subjected to conventional radiotherapy plus cisplatin every 3weeks...
August 2017: Oral Oncology
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