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https://www.readbyqxmd.com/read/29235131/measured-and-monte-carlo-simulated-surface-dose-reduction-for-superficial-x-rays-incident-on-tissue-with-underlying-air-or-bone
#1
John Baines, Sylwia Zawlodzka, Tim Markwell, Millicent Chan
PURPOSE: Measurement of surface dose reduction effects for superficial x-rays incident on tissue with underlying air or bone and comparison with Monte Carlo simulations of such effects. Further to investigate the correlation between surface dose reduction and changes in Compton backscatter spectra with tissue-bone separation. METHODS: An Advanced Markus chamber with entrance window facing downstream on the surface of a solid water phantom was used to investigate changes in surface dose with an underlying air or bone interface located at various depths below the surface...
December 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/29221258/neoadjuvant-dcf-vs-acf-for-resectable-oesophageal-squamous-cell-carcinoma
#2
EDITORIAL
Vasiliki Michalarea, Elizabeth C Smyth
No abstract text is available yet for this article.
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29217480/delphinidin-protects-colon-carcinoma-cells-against-the-genotoxic-effects-of-the-mycotoxin-altertoxin-ii
#3
Georg Aichinger, Hannes Puntscher, Julia Beisl, Mary-Liis Kütt, Benedikt Warth, Doris Marko
Alternaria spp. are ubiquitous molds that are able to produce toxic secondary metabolites which may contaminate food globally. One of those is the mycotoxin altertoxin II (ATX-II), a genotoxic and mutagenic compound. In recent years, different flavonoids that may co-occur with mycotoxins in food were demonstrated to temper toxic effects of molds, mostly through their anti-oxidant properties. Thus, in this study, we assessed the influence of the berry anthocyanidin delphinidin on the toxicity of ATX-II in HT-29 colon carcinoma cells...
December 4, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29202419/ultrafine-particulate-matter-impairs-mitochondrial-redox-homeostasis-and-activates-phosphatidylinositol-3-kinase-mediated-dna-damage-responses-in-lymphocytes
#4
Arpit Bhargava, Shivani Tamrakar, Aniket Aglawe, Harsha Lad, Rupesh Kumar Srivastava, Dinesh Kumar Mishra, Rajnarayan Tiwari, Koel Chaudhury, Irina Yu Goryacheva, Pradyumna Kumar Mishra
Particulate matter (PM), broadly defined as coarse (2.5-10 μm), fine (0.1-2.5 μm) and ultrafine particles (≤0.1 μm), is a major constituent of ambient air pollution. Recent studies have linked PM exposure (coarse and fine particles) with several human diseases including cancer. However, the molecular mechanisms underlying ultrafine PM exposure induced cellular and sub-cellular repercussions are ill-defined. Since mitochondria are one of the major targets of different environmental pollutants, we herein aimed to understand the molecular repercussion of ultrafine PM exposure on mitochondrial machinery in peripheral blood lymphocytes...
December 1, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29199662/efficacy-and-safety-of-first-line-systemic-chemotherapy-with-epirubicin-cisplatin-plus-5-fluorouracil-and-docetaxel-cisplatin-plus-5-fluorouracil-regimens-in-locally-advanced-inoperable-or-metastatic-gastric-or-gastroesophageal-junction-adenocarcinoma-a-prospective
#5
K G Babu, T Chaudhuri, K C Lakshmaiah, L Dasappa, L A Jacob, McS Babu, A H Rudresha, K N Lokesh, L K Rajeev
BACKGROUND: Patients with locally advanced inoperable or metastatic gastric or gastroesophageal junction (GEJ) adenocarcinoma have a poor prognosis. The maximum benefit of systemic chemotherapy is usually achieved in the first-line setting. Even though systemic chemotherapy has been used for long time, in view of unsatisfactory results, no standard regimen has been emerged. Unfortunately, till date, there is no published prospective data from India, comparing the two most commonly used triplet regimens, epirubicin, cisplatin plus 5-fluorouracil (ECF) and docetaxel, cisplatin plus 5-fluorouracil (DCF), in this patient population...
January 2017: Indian Journal of Cancer
https://www.readbyqxmd.com/read/29196951/behavioral-and-biochemical-effects-of-n-acetylcysteine-in-zebrafish-acutely-exposed-to-ethanol
#6
Ricieri Mocelin, Matheus Marcon, Simone D'ambros, Ana P Herrmann, Alex Sander da Rosa Araujo, Angelo Piato
Alcohol hangover refers to unpleasant symptoms experienced as a direct consequence of a binge drinking episode. The effects observed in this condition are related to the increase in alcohol metabolites and imbalance in oxidative status. N-acetylcysteine (NAC) is a mucolytic agent and an antidote for paracetamol overdose. Preclinical and clinical studies have shown that NAC is a multi-target drug acting through neuroprotective, antioxidant and neurotrophic mechanisms as well as a glutamate modulator. The aim of this study was to investigate the effects of NAC in zebrafish acutely exposed to ethanol (EtOH)...
December 1, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/29190482/stropharia-rugosoannulata-and-gymnopilus-luteofolius-promising-fungal-species-for-pharmaceutical-biodegradation-in-contaminated-water
#7
Francesc Castellet-Rovira, Daniel Lucas, Marta Villagrasa, Sara Rodríguez-Mozaz, Damià Barceló, Montserrat Sarrà
Pharmaceuticals are environmental micropollutants that pose an emerging challenge because they are poorly eliminated in conventional wastewater treatment plants. Over the last decade, many attempts have been made to solve this problem, and wastewater fungal treatment is a promising alternative. In this study, six different ligninolytic fungi (Trametes versicolor, Ganoderma lucidum, Irpex lacteus, Stropharia rugosoannulata, Gymnopilus luteofolius and Agrocybe erebia) were studied as bioremediation candidates for the removal and degradation of six recalcitrant pharmaceutical micropollutants: Carbamazepine (CBZ), Venlafaxine (VFX), Iopromide (IPD), Diclofenac (DCF), Cyclophosphamide (CFD) and Ifosfamide (IFD)...
November 27, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29190316/utility-of-initial-induction-chemotherapy-with-5-fluorouracil-cisplatin-and-docetaxel-dcf-for-t4-esophageal-cancer-a-propensity-score-matched-analysis
#8
T Makino, M Yamasaki, Y Miyazaki, N Wada, T Takahashi, Y Kurokawa, K Nakajima, S Takiguchi, M Mori, Y Doki
Although no consensus is available on the treatment of esophageal squamous cell carcinoma (ESCC) invading adjacent organs (T4), establishing effective induction treatments is crucial to altering an unresectable status and achieving curative resection. Here, we evaluated the efficacy of chemotherapy using 5-fluorouracil, cisplatin, and docetaxel (DCF) as the initial induction treatment for T4 ESCC. Fifty patients without distant metastasis who underwent initial induction chemotherapy using DCF for T4 ESCC were propensity score-matched with 50 patients who underwent radiotherapy concurrent with cisplatin and 5-fluorouracil (CRT)...
November 28, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29183581/deciphering-the-toxic-effects-of-organochlorine-pesticide-dicofol-on-human-rbcs-and-lymphocytes
#9
Ajaz Ahmad, Masood Ahmad
Organochlorine pesticides have generated growing concern owing to their diverse toxicities. In this connection, we have evaluated toxic potential of an acaricide, dicofol (DCF) and its harmful effects on human RBCs and lymphocytes. DCF caused hemolysis and rupture of human erythrocytes as confirmed by scanning electron microscopy (SEM). Significant increase in protein oxidation, lipid peroxidation, ROS production, methemoglobin formation with enhanced activities of superoxide dismutase and catalase but decreased level of reduced glutathione were observed as a result of DCF exposure to human erythrocytes...
November 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29161719/palmitic-acid-curcumin-ester-facilitates-protection-of-neuroblastoma-against-oligomeric-a%C3%AE-40-insult
#10
Zhangyang Qi, Meihao Wu, Yun Fu, Tengfei Huang, Tingting Wang, Yanjie Sun, Zhibo Feng, Changzheng Li
BACKGROUND/AIMS: The generation of reactive oxygen species (ROS) caused by amyloid-β (Aβ) is considered to be one of mechanisms underlying the development of Alzheimer's disease. Curcumin can attenuate Aβ-induced neurotoxicity through ROS scavenging, but the protective effect of intracellular curcumin on neurocyte membranes against extracellular Aβ may be compromised. To address this issue, we synthesized a palmitic acid curcumin ester (P-curcumin) which can be cultivated on the cell membrane and investigated the neuroprotective effect of P-curcumin and its interaction with Aβ...
November 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29158087/fabp4-induces-asthmatic-airway-epithelial-barrier-dysfunction-via-ros-activated-foxm1
#11
Gaohui Wu, Liteng Yang, Yi Xu, Xiaohong Jiang, Xiaomin Jiang, Lisha Huang, Ling Mao, Shaoxi Cai
Functional abnormal airway epithelial cells, along with activated inflammatory cells, resulting in chronic airway inflammation, are considered as the characteristic of asthma. Fatty Acid Binding Protein 4 (FABP4) takes part in glucose and lipid homeostasis, and also have an important role in allergic airway inflammation. However, whether FABP4 influence barrier function of airway epithelial cells is unknown. In vivo, a HDM-induced murine model of asthma was obtained to assessed airway inflammation and protein expression of E-cadherin and Forkhead Box M1 (FoxM1)...
November 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29155521/gastric-adenocarcinoma-with-neuroendocrine-differentiation-clinicopathological-features-and-efficacy-of-modified-dcf-chemotherapy
#12
Yakup Bozkaya, Nuriye Ozdemir, Aysel Colak, Nurullah Zengin
PURPOSE: The aim of this study was to investigate the clinicopathological characteristics of patients with gastric carcinoma with neuroendocrine differentiation (NEDGC) and the efficacy of the modified DCF (mDCF) chemotherapy regimen. METHODS: Patients with NEDGC and non-NEDGC (pure adenocarcinoma) were evaluated comparatively in terms of pathological parameters, clinical parameters and treatment efficacy. Patients received treatment with mDCF (docetaxel, cisplatin and 5-fluorouracil)...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29144178/influence-of-a-dosing-time-on-toxicities-induced-by-docetaxel-cisplatin-and-5-fluorouracil-in-patients-with-oral-squamous-cell-carcinoma-a-cross-over-pilot-study
#13
Yoshiyuki Tsuchiya, Kentaro Ushijima, Tadahide Noguchi, Naruo Okada, Jun-Ichi Hayasaka, Yoshinori Jinbu, Hitoshi Ando, Yoshiyuki Mori, Mikio Kusama, Akio Fujimura
Docetaxel, cisplatin plus fluorouracil (DCF) regimen is a useful chemotherapy, but is sometimes withdrawn due to severe adverse effects (AE). In this study, we examined whether the chronotherapy of DCF regimen could reduce the drugs-induced toxicities in clinical practice. Patients with oral squamous cell carcinoma were enrolled. Chemotherapy started at 10:30 (Morning-dosing) or 18:30 (Evening-dosing) for 5 days by a cross-over design. AE were assessed for 14 days after an initiation of each dosing. The grades of nausea, vomiting and neutropenia were smaller during Evening-dosing than during Morning-dosing...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29138379/-a-case-of-advanced-gastric-cancer-responding-to-neoadjuvant-chemotherapy-with-docetaxel-cisplatin-and-5-fluorouracil-leading-to-a-pathological-complete-response
#14
Keishi Kawasaki, Dan Takeuchi, Takaaki Kaneko, Seiki Miura, Junichiro Kamiya, Yoji Miyahara, Kotaro Yoshimura, Akira Ogata
We report a 72-year-old woman who was initially diagnosed with locally advanced gastric cancer with involvement of the esophagus and pancreas. She received 3 courses of neoadjuvant chemotherapy(NAC)with docetaxel, cisplatin, and 5- fluorouracil(the DCF regimen)and achieved an excellent response. She underwent total gastrectomy with distal pancreatectomy, splenectomy, and D2 lymphadenectomy. Histological examination confirmed a pathological complete response. NAC chemotherapy can down stage/down size the disease and allow some patients to undergo curative radical surgery...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29136584/unprecedented-chemosensing-behavior-of-novel-tetra-substituted-benzimidazole-zinc-ii-phthalocynine-for-selective-detection-of-bi-3-ion-synthesis-characterization-and-ros-generation
#15
Azeem Ullah, Faheem Shah, Imran Khan, Muhammad Anwar, Kiramat Shah, Munira Taj Muhammad, Farid Ahmad
In this work, synthesis of novel symmetrical 4-(2-bromo-4-(5-bromo-1H-benzo[d] imidazol-2-yl) phenoxy) tetra substituted zinc phthalocyanine has been reported. The novel benzimidazole zinc phthlocynine compound (3) has been characterized by MALDI-TOF MS, FT-IR, UV-vis, and (1)H NMR spectroscopy. This new compound 3 displayed excellent selectivity towards Bi(3+) ion in the presence of other competitive ions including Ca(2+), Cd(2+), Co(2+) Cu(2+), Fe(3+), Hg(2+), Sn(2+), Mg(2+), Na(+), Ni(2+) and Pb(2+) respectively...
November 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29136005/a-17-molecule-set-as-a-predictor-of-complete-response-to-neoadjuvant-chemotherapy-with-docetaxel-cisplatin-and-5-fluorouracil-in-esophageal-cancer
#16
Hajime Fujishima, Shoichi Fumoto, Tomotaka Shibata, Kohei Nishiki, Yoshiyuki Tsukamoto, Tsuyoshi Etoh, Masatsugu Moriyama, Norio Shiraishi, Masafumi Inomata
BACKGROUND: Recently, neoadjuvant chemotherapy with docetaxel/cisplatin/5-fluorouracil (NAC-DCF) was identified as a novel strong regimen with a high rate of pathological complete response (pCR) in advanced esophageal cancer in Japan. Predicting pCR will contribute to the therapeutic strategy and the prevention of surgical invasion. However, a predictor of pCR after NAC-DCF has not yet been developed. The aim of this study was to identify a novel predictor of pCR in locally advanced esophageal cancer treated with NAC-DCF...
2017: PloS One
https://www.readbyqxmd.com/read/29130958/propofol-through-upregulating-caveolin-3-attenuates-post-hypoxic-mitochondrial-damage-and-cell-death-in-h9c2-cardiomyocytes-during-hyperglycemia
#17
Fan Deng, Shuang Wang, Liangqing Zhang, Xiang Xie, Shuyun Cai, Haobo Li, Gui-Ling Xie, Hui-Lai Miao, Changmin Yang, Xin Liu, Zhengyuan Xia
BACKGROUND/AIMS: Hearts from diabetic subjects are susceptible to myocardial ischemia reperfusion (I/R) injury. Propofol has been shown to protect against myocardial I/R injury due to its antioxidant properties while the underlying mechanism remained incompletely understood. Thus, this study aimed to determine whether or not propofol could attenuate myocardial I/R injury by attenuating mitochondrial dysfunction/damage through upregulating Caveolin (Cav)-3 under hyperglycemia. METHODS: Cultured rat cardiomyocyte H9C2 cells were subjected to hypoxia/reoxygenation (H/R) in the absence or presence of propofol under high glucose (HG), and cell viability, lactate dehydrogenase (LDH) and mitochondrial viability as well as creatine kinase-MB (CK-MB), cardiac troponin I (cTnI) and intracellular adenosine triphosphate (ATP) content were measured with colorimetric Enzyme-Linked Immunosorbent Assays...
November 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29130098/ursodeoxycholic-acid-suppresses-epithelial-mesenchymal-transition-and-cancer-stem-cell-formation-by-reducing-the-levels-of-peroxiredoxin-ii-and-reactive-oxygen-species-in-pancreatic-cancer-cells
#18
Yoon Jae Kim, Seok Hoo Jeong, Eun-Kyung Kim, Eui Joo Kim, Jae Hee Cho
Reactive oxygen species (ROS) play a key role in cancer development and progression. Ursodeoxycholic acid (UDCA) may possess antioxidant, anti-inflammatory and chemoprophylatic effects. Therefore, we aimed to investigate the effects and mechanisms of UDCA treatment on pancreatic cancer cells. The pancreatic cancer cell lines HPAC and Capan-1 were treated with 0.2 mM UDCA. To examine alterations in the levels of intracellular ROS, the DCF-DA stain was used and both stemness and epithelial-mesenchymal transition (EMT)-related genes were quantified using qRT-PCR and western blot analysis...
December 2017: Oncology Reports
https://www.readbyqxmd.com/read/29127639/reactivation-and-reuse-of-tio2-sns2-composite-catalyst-for-solar-driven-water-treatment
#19
Marin Kovacic, Nina Kopcic, Hrvoje Kusic, Urska Lavrencic Stangar, Dionysios D Dionysiou, Ana Loncaric Bozic
One of the most important features of photocatalytic materials intended to be used for water treatment is their long-term stability. The study is focused on the application of thermal and chemical treatments for the reactivation of TiO2-SnS2 composite photocatalyst, prepared by hydrothermal synthesis and immobilized on the glass support using titania/silica binder. Such a catalytic system was applied in solar-driven treatment, solar/TiO2-SnS2/H2O2, for the purification of water contaminated with diclofenac (DCF)...
November 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29121706/protective-effect-of-fucoidan-extract-from-ecklonia-cava-on-hydrogen-peroxide-induced-neurotoxicity
#20
Seon Kyeong Park, Jin Yong Kang, Jong Min Kim, Sang Hyun Park, Bong Seok Kwon, Gun-Hee Kim, Ho Jin Heo
We evaluated the antioxidant activity and neuronal cell-protective effect of fucoidan extract from Ecklonia cava (FEC) on hydrogen peroxide (H2O2)-induced cytotoxicity in PC-12 and MC-IXC cells to assess its protective effect against oxidative stress. Antioxidant activities were examined using the ABTS radical scavenging activity and malondialdehyde (MDA)-inhibitory effect, and the results showed that FEC had significant antioxidant activity. Intracellular ROS content and neuronal cell viability were investigated using DCF-DA assay and MTT reduction assay...
November 9, 2017: Journal of Microbiology and Biotechnology
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