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https://www.readbyqxmd.com/read/27919966/multimodal-primary-treatment-of-metastatic-prostate-cancer-with-androgen-deprivation-and-radiation
#1
Timo Joensuu, Greetta Joensuu, Kalevi Kairemo, Timo Kiljunen, Maigo Riener, Aili Aaltonen, Martti Ala-Opas, Aki Kangasmäki, Tuomo Alanko, Lauri Taipale, Petteri Hervonen, Anna Bützow, Irene Virgolini, Akseli Hemminki
AIM: We combined anti-androgen therapy with radiotherapy in a first-line setting for metastatic prostate cancer aiming to cause maximal cancer-cell death to delay the emergence of castration-resistant disease. MATERIALS AND METHODS: In this non-randomized retrospective series of 46 patients, the initial median prostate-specific antigen (PSA) was 98.5 μg/l (range=6.7-15,500), median Gleason score 9 and most men had at least T3N1M1 disease. All patients received luteinizing hormone releasing hormone analog or degarelix with bicalutamide...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27917826/improved-radiation-dose-efficiency-in-solution-saxs-using-a-sheath-flow-sample-environment
#2
Nigel Kirby, Nathan Cowieson, Adrian M Hawley, Stephen T Mudie, Duncan J McGillivray, Michael Kusel, Vesna Samardzic-Boban, Timothy M Ryan
Radiation damage is a major limitation to synchrotron small-angle X-ray scattering analysis of biomacromolecules. Flowing the sample during exposure helps to reduce the problem, but its effectiveness in the laminar-flow regime is limited by slow flow velocity at the walls of sample cells. To overcome this limitation, the coflow method was developed, where the sample flows through the centre of its cell surrounded by a flow of matched buffer. The method permits an order-of-magnitude increase of X-ray incident flux before sample damage, improves measurement statistics and maintains low sample concentration limits...
December 1, 2016: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/27916999/high-power-telecommunication-compatible-photoconductive-terahertz-emitters-based-on-plasmonic-nano-antenna-arrays
#3
Nezih Tolga Yardimci, Hong Lu, Mona Jarrahi
We present a high-power and broadband photoconductive terahertz emitter operating at telecommunication optical wavelengths, at which compact and high-performance fiber lasers are commercially available. The presented terahertz emitter utilizes an ErAs:InGaAs substrate to achieve high resistivity and short carrier lifetime characteristics required for robust operation at telecommunication optical wavelengths. It also uses a two-dimensional array of plasmonic nano-antennas to offer significantly higher optical-to-terahertz conversion efficiencies compared to the conventional photoconductive emitters, while maintaining broad operation bandwidths...
November 7, 2016: Applied Physics Letters
https://www.readbyqxmd.com/read/27915972/resistance-to-cell-death-and-its-modulation-in-cancer-stem-cells
#4
Ahmad R Safa
Accumulating evidence has demonstrated that human cancers arise from various tissues of origin that initiate from cancer stem cells (CSCs) or cancer-initiating cells. The extrinsic and intrinsic apoptotic pathways are dysregulated in CSCs, and these cells play crucial roles in tumor initiation, progression, cell death resistance, chemo- and radiotherapy resistance, and tumor recurrence. Understanding CSC-specific signaling proteins and pathways is necessary to identify specific therapeutic targets that may lead to the development of more efficient therapies selectively targeting CSCs...
2016: Critical Reviews in Oncogenesis
https://www.readbyqxmd.com/read/27913719/surgical-site-infections-in-major-head-and-neck-surgeries-involving-pedicled-flap-reconstruction
#5
Neerav Goyal, Bharat B Yarlagadda, Daniel G Deschler, Kevin S Emerick, Derrick T Lin, Debbie L Rich, James W Rocco, Marlene L Durand
OBJECTIVE: To evaluate surgical site infections (SSI) after pedicled reconstruction in head and neck surgery. METHODS: Records of patients with pedicled flap reconstructions between 2009 and 2014 at Massachusetts Eye and Ear were reviewed. Onset of SSI or fistula ≤30 days postoperatively was noted. A free flap cohort was reviewed for comparison. RESULTS: Two hundred and eight pedicled reconstructions were performed for cancer (83%), osteoradionecrosis (7%), and other reasons (10%)...
January 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/27913448/targeting-inflammation-in-cancer-prevention-and-therapy
#6
REVIEW
Jelena Todoric, Laura Antonucci, Michael Karin
Inflammation is associated with the development and malignant progression of most cancers. As most of the cell types involved in cancer-associated inflammation are genetically stable and thus are not subjected to rapid emergence of drug resistance, the targeting of inflammation represents an attractive strategy both for cancer prevention and for cancer therapy. Tumor-extrinsic inflammation is caused by many factors, including bacterial and viral infections, autoimmune diseases, obesity, tobacco smoking, asbestos exposure, and excessive alcohol consumption, all of which increase cancer risk and stimulate malignant progression...
December 2016: Cancer Prevention Research
https://www.readbyqxmd.com/read/27913061/study-of-visible-light-activated-polymerization-in-bisgma-tegdma-monomers-with-type-1-and-type-2-photoinitiators-using-raman-spectroscopy
#7
Tritala K Vaidyanathan, Jayalakshmi Vaidyanathan, Pambadikandathil Philipose Lizymol, Saraswathy Ariya, Kalliyana Venketeswaran Krishnan
OBJECTIVE: The goal of the study was to characterize the efficiency of polymerization of Type 1 and Type 2 initiators for visible light cure of a BisGMA-TEGDMA monomer mixture. METHODS: Raman spectroscopy was used to follow conversion during polymerization of a BisGMA-TEGDMA mixture using a Type I photoinitiator diphenyl(2,4,6 dimethylbenzoyl)phosphine oxide (TPO) and a Type II photoinitiator camphorquinone (CQ) and an amine, both initiators at 0.5wt.%. Different light exposure times and storage times after light curing were used as variables...
November 29, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27912061/tumor-interferon-signaling-regulates-a-multigenic-resistance-program-to-immune-checkpoint-blockade
#8
Joseph L Benci, Bihui Xu, Yu Qiu, Tony J Wu, Hannah Dada, Christina Twyman-Saint Victor, Lisa Cucolo, David S M Lee, Kristen E Pauken, Alexander C Huang, Tara C Gangadhar, Ravi K Amaravadi, Lynn M Schuchter, Michael D Feldman, Hemant Ishwaran, Robert H Vonderheide, Amit Maity, E John Wherry, Andy J Minn
Therapeutic blocking of the PD1 pathway results in significant tumor responses, but resistance is common. We demonstrate that prolonged interferon signaling orchestrates PDL1-dependent and PDL1-independent resistance to immune checkpoint blockade (ICB) and to combinations such as radiation plus anti-CTLA4. Persistent type II interferon signaling allows tumors to acquire STAT1-related epigenomic changes and augments expression of interferon-stimulated genes and ligands for multiple T cell inhibitory receptors...
December 1, 2016: Cell
https://www.readbyqxmd.com/read/27911840/multistep-regulation-of-autophagy-by-wnk1
#9
Sachith Gallolu Kankanamalage, A-Young Lee, Chonlarat Wichaidit, Andres Lorente-Rodriguez, Akansha M Shah, Steve Stippec, Angelique W Whitehurst, Melanie H Cobb
The with-no-lysine (K) (WNK) kinases are an atypical family of protein kinases that regulate ion transport across cell membranes. Mutations that result in their overexpression cause hypertension-related disorders in humans. Of the four mammalian WNKs, only WNK1 is expressed throughout the body. We report that WNK1 inhibits autophagy, an intracellular degradation pathway implicated in several human diseases. Using small-interfering RNA-mediated WNK1 knockdown, we show autophagosome formation and autophagic flux are accelerated...
November 28, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27910847/efficiency-limits-for-photoelectrochemical-water-splitting
#10
Katherine T Fountaine, Hans Joachim Lewerenz, Harry A Atwater
Theoretical limiting efficiencies have a critical role in determining technological viability and expectations for device prototypes, as evidenced by the photovoltaics community's focus on detailed balance. However, due to their multicomponent nature, photoelectrochemical devices do not have an equivalent analogue to detailed balance, and reported theoretical efficiency limits vary depending on the assumptions made. Here we introduce a unified framework for photoelectrochemical device performance through which all previous limiting efficiencies can be understood and contextualized...
December 2, 2016: Nature Communications
https://www.readbyqxmd.com/read/27910644/development-of-plasma-bolometers-using-fiber-optic-temperature-sensors
#11
M L Reinke, M Han, G Liu, G G van Eden, R Evenblij, M Haverdings, B C Stratton
Measurements of radiated power in magnetically confined plasmas are important for exhaust studies in present experiments and expected to be a critical diagnostic for future fusion reactors. Resistive bolometer sensors have long been utilized in tokamaks and helical devices but suffer from electromagnetic interference (EMI). Results are shown from initial testing of a new bolometer concept based on fiber-optic temperature sensor technology. A small, 80 μm diameter, 200 μm long silicon pillar attached to the end of a single mode fiber-optic cable acts as a Fabry-Pérot cavity when broadband light, λo ∼ 1550 nm, is transmitted along the fiber...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910527/an-fpga-based-bolometer-for-the-mast-u-super-x-divertor
#12
Jack Lovell, Graham Naylor, Anthony Field, Peter Drewelow, Ray Sharples
A new resistive bolometer system has been developed for MAST-Upgrade. It will measure radiated power in the new Super-X divertor, with millisecond time resolution, along 16 vertical and 16 horizontal lines of sight. The system uses a Xilinx Zynq-7000 series Field-Programmable Gate Array (FPGA) in the D-TACQ ACQ2106 carrier to perform real time data acquisition and signal processing. The FPGA enables AC-synchronous detection using high performance digital filtering to achieve a high signal-to-noise ratio and will be able to output processed data in real time with millisecond latency...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910411/design-and-characterization-of-a-prototype-divertor-viewing-infrared-video-bolometer-for-nstx-u
#13
G G van Eden, M L Reinke, B J Peterson, T K Gray, L F Delgado-Aparicio, M A Jaworski, J Lore, K Mukai, R Sano, S N Pandya, T W Morgan
The InfraRed Video Bolometer (IRVB) is a powerful tool to measure radiated power in magnetically confined plasmas due to its ability to obtain 2D images of plasma emission using a technique that is compatible with the fusion nuclear environment. A prototype IRVB has been developed and installed on NSTX-U to view the lower divertor. The IRVB is a pinhole camera which images radiation from the plasma onto a 2.5 μm thick, 9 × 7 cm(2) Pt foil and monitors the resulting spatio-temporal temperature evolution using an IR camera...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909430/bacterial-active-community-cycling-in-response-to-solar-radiation-and-their-influence-on-nutrient-changes-in-a-high-altitude-wetland
#14
Verónica Molina, Klaudia Hernández, Cristina Dorador, Yoanna Eissler, Martha Hengst, Vilma Pérez, Chris Harrod
Microbial communities inhabiting high-altitude spring ecosystems are subjected to extreme changes in solar irradiance and temperature throughout the diel cycle. Here, using 16S rRNA gene tag pyrosequencing (cDNA) we determined the composition of actively transcribing bacteria from spring waters experimentally exposed through the day (morning, noon, and afternoon) to variable levels of solar radiation and light quality, and evaluated their influence on nutrient recycling. Solar irradiance, temperature, and changes in nutrient dynamics were associated with changes in the active bacterial community structure, predominantly by Cyanobacteria, Verrucomicrobia, Proteobacteria, and 35 other Phyla, including the recently described Candidate Phyla Radiation (e...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27909286/three-cases-of-levodopa-resistant-parkinsonism-after-radiation-therapy
#15
Raja Mehanna, Joohi Jimenez-Shahed, Ilia Itin
BACKGROUND Unequivocal brain radiation-induced parkinsonism has so far been reported in only in two pediatric patients. However, with the rising incidence rates for brain tumors in industrialized countries and the consequential increased exposure to cranial radiotherapy, clinicians might become more exposed to this entity. CASE REPORT Three patients were treated for intraparenchymal brain tumor with resection, chemotherapy, and whole brain radiation. One patient developed leukoencephalopathy and parkinsonism within one year of treatment, one developed it seven years after treatment completion, and one developed dementia, parkinsonism and cerebral infracts 40 years after whole brain radiation...
December 2, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27905868/short-term-effects-of-low-let-radiation-on-the-endothelial-barrier-uncoupling-of-pecam-1-and-the-production-of-endothelial-microparticles
#16
Thomas Templin, Preety Sharma, Peter Guida, Peter Grabham
A significant target for radiation-induced effects is the microvascular system, which is critical to healthy tissue function and its pathology is linked to disrupted endothelial barrier function. Low-linear energy transfer (LET) ionizing radiation is a source of noncancer pathologies in humans and little is known about the early events that could initiate subsequent diseases. However, it is well known that gamma radiation causes a very early disruption of the endothelial barrier at doses below those required for cytotoxic effects...
December 1, 2016: Radiation Research
https://www.readbyqxmd.com/read/27905394/uvr2-ensures-transgenerational-genome-stability-under-simulated-natural-uv-b-in-arabidopsis-thaliana
#17
Eva-Maria Willing, Thomas Piofczyk, Andreas Albert, J Barbro Winkler, Korbinian Schneeberger, Ales Pecinka
Ground levels of solar UV-B radiation induce DNA damage. Sessile phototrophic organisms such as vascular plants are recurrently exposed to sunlight and require UV-B photoreception, flavonols shielding, direct reversal of pyrimidine dimers and nucleotide excision repair for resistance against UV-B radiation. However, the frequency of UV-B-induced mutations is unknown in plants. Here we quantify the amount and types of mutations in the offspring of Arabidopsis thaliana wild-type and UV-B-hypersensitive mutants exposed to simulated natural UV-B over their entire life cycle...
December 1, 2016: Nature Communications
https://www.readbyqxmd.com/read/27903184/microinvasive-tumor-endoresection-in-combination-with-ocular-stereotactic-radiosurgery
#18
Oleg A Sinyavskiy, Roman L Troyanovsky, Pavel I Ivanov, Alexandr S Golovin, Andrey V Tibilov, Svetlana N Solonina, Anna M Astapenko, Irina S Zubatkina
OBJECTIVE The use of Gamma Knife radiosurgery (GKRS) as monotherapy in the treatment of uveal melanoma (UM) allows clinicians to achieve high local tumor control with low recurrence but does not prevent secondary enucleation due to glaucoma in cases of large tumors. The authors analyzed indications for tumor endoresection (ER), the time interval between irradiation and surgery, and the features and results of performing ER for UM after GKRS. METHODS Thirty-seven patients between 28 and 78 years of age (16 male and 11 female patients) with UM underwent GKRS with a dose of 70 to 80 Gy that was applied to the center of the tumor with complete immobilization of the eye during the procedure...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27902466/long-non-coding-rna-urothelial-carcinoma-associated-1-uca1-mediates-radiation-response-in-prostate-cancer
#19
Alireza Fotouhi Ghiam, Samira Taeb, Xiaoyong Huang, Vincent Huang, Jessica Ray, Seville Scarcello, Christianne Hoey, Sahar Jahangiri, Emmanouil Fokas, Andrew Loblaw, Robert G Bristow, Danny Vesprini, Paul Boutros, Stanley K Liu
Radioresistance remains a significant obstacle in the treatment of Prostate Cancer (PCa). To simulate the clinical scenario of irradiation resistance (IRR), we created DU145-IRR PCa cell lines by treatment with 2 Gy daily IR for 59 fractions. DU145-IRR cells acquired an aggressive phenotype as evidenced by increased clonogenic survival, tumorigenic potential and invasiveness. We performed transcriptome profiling to discover dysregulated genes in DU145-IRR cells and identified the long non-coding RNA (lncRNA), Urothelial carcinoma-associated 1 (UCA1)...
November 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27902285/raineyella-antarctica-gen-nov-sp-nov-a-novel-psychrotolerant-d-amino-acid-utilizing-anaerobe-isolated-from-two-geographic-locations-of-the-southern-hemisphere
#20
Elena V Pikuta, Rodolfo Javier Menes, Alisa Michelle Bruce, Zhe Lyu, Nisha Patel, Yuchen Liu, Richard Brice Hoover, Hans Jürgen Busse, Paul A Lawson, William Barney Whitman
Gram-positive bacterium, strain LZ-22T, was isolated from a rhizosphere of moss Leptobryum sp. collected at the shore of Lake Zub in Antarctica. Cells were motile, straight or pleomorphic rods with sizes of 0.6-1.0 x 3.5-10 μm. The new isolate was a facultatively anaerobic, catalase positive, psychrotolerant mesophile. Growth was observed at 3-41 oC (optimum 24-30 oC), 0-7 % NaCl, w/v (optimum, 0.25 %) and pH 4.0-9.0 (optimum 7.8). The quinone system of strain LZ-22T possessed predominately menaquinones MK-9(H4)...
October 12, 2016: International Journal of Systematic and Evolutionary Microbiology
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