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https://www.readbyqxmd.com/read/28921843/potential-proton-and-photon-dose-degradation-in-advanced-head-and-neck-cancer-patients-by-intratherapy-changes
#1
Kristin Stützer, Annika Jakobi, Anna Bandurska-Luque, Steffen Barczyk, Carolin Arnsmeyer, Steffen Löck, Christian Richter
PURPOSE: Evaluation of dose degradation by anatomic changes for head-and-neck cancer (HNC) intensity-modulated proton therapy (IMPT) relative to intensity-modulated photon therapy (IMRT) and identification of potential indicators for IMPT treatment plan adaptation. METHODS: For 31 advanced HNC datasets, IMPT and IMRT plans were recalculated on a computed tomography scan (CT) taken after about 4 weeks of therapy. Dose parameter changes were determined for the organs at risk (OARs) spinal cord, brain stem, parotid glands, brachial plexus, and mandible, for the clinical target volume (CTV) and the healthy tissue outside planning target volume (PTV)...
September 18, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28918018/locked-nucleic-acid-gapmers-and-conjugates-potently-silence-adam33-an-asthma-associated-metalloprotease-with-nuclear-localized-mrna
#2
Hannah M Pendergraff, Pranathi Meda Krishnamurthy, Alexandre J Debacker, Michael P Moazami, Vivek K Sharma, Liisa Niitsoo, Yong Yu, Yen Nee Tan, Hans Michael Haitchi, Jonathan K Watts
Two mechanisms dominate the clinical pipeline for oligonucleotide-based gene silencing, namely, the antisense approach that recruits RNase H to cleave target RNA and the RNAi approach that recruits the RISC complex to cleave target RNA. Multiple chemical designs can be used to elicit each pathway. We compare the silencing of the asthma susceptibility gene ADAM33 in MRC-5 lung fibroblasts using four classes of gene silencing agents, two that use each mechanism: traditional duplex small interfering RNAs (siRNAs), single-stranded small interfering RNAs (ss-siRNAs), locked nucleic acid (LNA) gapmer antisense oligonucleotides (ASOs), and novel hexadecyloxypropyl conjugates of the ASOs...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28911087/an-antisense-oligonucleotide-targeting-tgf-%C3%AE-2-inhibits-lung-metastasis-and-induces-cd86-expression-in-tumor-associated-macrophages
#3
I Huber-Ruano, C Raventós, I Cuartas, C Sánchez-Jaro, A Arias, J L Parra, K Wosikowski, M Janicot, J Seoane
Background: The transforming growth factor (TGF)-β pathway is a well-described inducer of immunosuppression and can act as an oncogenic factor in advanced tumors. Several preclinical and clinical studies show that the TGF-β pathway can be considered a promising molecular target for cancer therapy. The human genome has three TGF-β isoforms and not much is known about the oncogenic response to each of the isoforms. Here, we studied the antitumor response to ISTH0047, a recently developed locked nucleic acid-modified antisense oligonucleotide targeting TGF-β2...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28881731/detection-of-braf-nras-kit-gnaq-gna11-and-map2k1-2-mutations-in-russian-melanoma-patients-using-lna-pcr-clamp-and-biochip-analysis
#4
Marina Emelyanova, Lilit Ghukasyan, Ivan Abramov, Oxana Ryabaya, Evgenia Stepanova, Anna Kudryavtseva, Asiya Sadritdinova, Cholpon Dzhumakova, Tatiana Belysheva, Sergey Surzhikov, Lyudmila Lyubchenko, Alexander Zasedatelev, Tatiana Nasedkina
Target inhibitors are used for melanoma treatment, and their effectiveness depends on the tumor genotype. We developed a diagnostic biochip for the detection of 39 clinically relevant somatic mutations in the BRAF, NRAS, KIT, GNAQ, GNA11, MAP2K1 and MAP2K2 genes. We used multiplex locked nucleic acid (LNA) PCR clamp for the preferable amplification of mutated over wild type DNA. The amplified fragments were labeled via the incorporation of fluorescently labeled dUTP during PCR and were hybridized with specific oligonucleotides immobilized on a biochip...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28846518/etiology-and-manifestations-of-iatrogenesis-in-pediatrics
#5
Stowe Locke Teti, Kathleen Ennis-Durstine, Tomas Jose Silber
There is general agreement in the literature of what ought to occur following iatrogenic harm. Senior members of the team should disclose what occurred and how the problem will be remedied. Those involved should express heartfelt regrets and apologize sincerely. But in the pediatric setting, parents, as surrogates, can sometimes place clinicians on the horns of a dilemma: respect parental autonomy, which may involve continuing nonadvised therapy, or uphold the patient's best interests, which may indicate another course of care...
August 1, 2017: AMA Journal of Ethics
https://www.readbyqxmd.com/read/28843726/residual-tumour-hypoxia-in-head-and-neck-cancer-patients-undergoing-primary-radiochemotherapy-final-results-of-a-prospective-trial-on-repeat-fmiso-pet-imaging
#6
Steffen Löck, Rosalind Perrin, Annekatrin Seidlitz, Anna Bandurska-Luque, Sebastian Zschaeck, Klaus Zöphel, Mechthild Krause, Jörg Steinbach, Jörg Kotzerke, Daniel Zips, Esther G C Troost, Michael Baumann
BACKGROUND: Hypoxia is a well recognised parameter of tumour resistance to radiotherapy, a number of anticancer drugs and potentially immunotherapy. In a previously published exploration cohort of 25 head and neck squamous cell carcinoma (HNSCC) patients on [(18)F]fluoromisonidazole positron emission tomography (FMISO-PET) we identified residual tumour hypoxia during radiochemotherapy, not before start of treatment, as the driving mechanism of hypoxia-mediated therapy resistance. Several quantitative FMISO-PET parameters were identified as potential prognostic biomarkers...
August 23, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28842263/screening-of-an-fda-approved-compound-library-identifies-levosimendan-as-a-novel-anti-hiv-1-agent-that-inhibits-viral-transcription
#7
Tsuyoshi Hayashi, Maxime Jean, Huachao Huang, Sydney Simpson, Netty G Santoso, Jian Zhu
Combination antiretroviral therapy (cART) has been proven to efficiently inhibit ongoing replication of human immunodeficiency virus type 1 (HIV-1), and significantly improve the health outcome in patients of acquired immune deficiency syndrome (AIDS). However, cART is unable to cure HIV-1/AIDS. Even in presence of cART there exists a residual viremia, contributed from the viral reservoirs of latently infected HIV-1 proviruses; this constitutes a major hurdle. Currently, there are multiple strategies aimed at eliminating or permanently silence these HIV-1 latent reservoirs being intensely explored...
August 24, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28830984/arginine-deprivation-therapy-putative-strategy-to-eradicate-glioblastoma-cells-by-radiosensitization
#8
C Noreen Hinrichs, Mirjam Ingargiola, Theresa Käubler, Steffen Löck, Achim Temme, Alvaro Köhn-Luque, Andreas Deutsch, Olena Vovk, Oleh Stasyk, Leoni A Kunz-Schughart
Tumor cells - even if non-auxotrophic - are often highly sensitive to arginine deficiency. We hypothesized that arginine deprivation therapy (ADT) if combined with irradiation could be a new treatment strategy for glioblastoma (GBM) patients since systemic ADT is independent of local penetration and diffusion limitations. A proof-of-principle in vitro study was performed with ADT been mimicked by application of recombinant human arginase or arginine-free diets. <p>ADT inhibited 2-D growth and cell cycle progression, and reduced growth recovery after completion of treatment in four different GBM cell line models...
August 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28827731/microrna-7641-is-a-regulator-of-ribosomal-proteins-and-a-promising-targeting-factor-to-improve-the-efficacy-of-cancer-therapy
#9
Abu Musa Md Talimur Reza, Yun-Jung Choi, Yu-Guo Yuan, Joydeep Das, Hideyo Yasuda, Jin-Hoi Kim
Many diseases, including myocardial infarction, autoimmune disease, viral diseases, neurodegenerative diseases, and cancers, are frequently diagnosed with aberrant expression of microRNAs (miRNAs) and their allied pathways. This indicates the crucial role of miRNAs in maintaining biological and physiological processes. miR-7641 is a miRNA whose role in disease has not been fully investigated. In the present study, we investigated the expression pattern of miR-7641 and its target genes in different cancer cells, as well as in clinical cancer patients...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28827668/a-clue-to-unprecedented-strategy-to-hiv-eradication-lock-in-and-apoptosis
#10
Hiroshi Tateishi, Kazuaki Monde, Kensaku Anraku, Ryoko Koga, Yuya Hayashi, Halil Ibrahim Ciftci, Hasan DeMirci, Taishi Higashi, Keiichi Motoyama, Hidetoshi Arima, Masami Otsuka, Mikako Fujita
Despite the development of antiretroviral therapy against HIV, eradication of the virus from the body, as a means to a cure, remains in progress. A "kick and kill" strategy proposes "kick" of the latent HIV to an active HIV to eventually be "killed". Latency-reverting agents that can perform the "kick" function are under development and have shown promise. Management of the infected cells not to produce virions after the "kick" step is important to this strategy. Here we show that a newly synthesized compound, L-HIPPO, captures the HIV-1 protein Pr55(Gag) and intercepts its function to translocate the virus from the cytoplasm to the plasma membrane leading to virion budding...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819027/combination-therapy-with-bispecific-antibodies-and-pd-1-blockade-enhances-the-antitumor-potency-of-t-cells
#11
Chien-Hsing Chang, Yang Wang, Rongxiu Li, Diane L Rossi, Donglin Liu, Edmund A Rossi, Thomas M Cardillo, David M Goldenberg
The DOCK-AND-LOCK (DNL®) method is a platform technology that combines recombinant engineering and site-specific conjugation to create multispecific, multivalent antibodies of defined composition with retained bioactivity. We have applied DNL® to generate a novel class of trivalent bispecific antibodies (bsAbs), each comprising an anti-CD3 scFv covalently conjugated to a stabilized dimer of different anti-tumor Fabs. Here we report the further characterization of two such constructs, (E1)-3s and (14)-3s, which activate T cells and target Trop-2- and CEACAM5-expressing cancer cells, respectively...
August 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28817689/characterization-and-formulation-into-solid-dosage-forms-of-a-novel-bacteriophage-lytic-against-klebsiella-oxytoca
#12
Teagan L Brown, Steve Petrovski, Dannielle Hoyle, Hiu Tat Chan, Peter Lock, Joseph Tucci
AIM: To isolate and characterize bacteriophage lytic for the opportunistic pathogen Klebsiella oxytoca and their formulation into a range of solid dosage forms for in-vitro testing. METHODS AND RESULTS: We report the isolation, genomic and functional characterization of a novel bacteriophage lytic for Klebsiella oxytoca, which does not infect the closely related Klebsiella pneumoniae. This bacteriophage was formulated into suppositories and troches and shown to be released and lyse underlying Klebsiella oxytoca bacteria in an in-vitro model...
2017: PloS One
https://www.readbyqxmd.com/read/28814673/human-lung-tumor-foxp3-tregs-upregulate-four-treg-locking-transcription-factors
#13
Tatiana Akimova, Tianyi Zhang, Dmitri Negorev, Sunil Singhal, Jason Stadanlick, Abhishek Rao, Michael Annunziata, Matthew H Levine, Ulf H Beier, Joshua M Diamond, Jason D Christie, Steven M Albelda, Evgeniy B Eruslanov, Wayne W Hancock
Experimental data indicate that FOXP3+ Tregs can markedly curtail host antitumor immune responses, but the properties of human intratumoral Tregs are still largely unknown, in part due to significant methodologic problems. We studied the phenotypic, functional, epigenetic, and transcriptional features of Tregs in 92 patients with non-small-cell lung cancer, comparing the features of Tregs within tumors versus corresponding blood, lung, and lymph node samples. Intratumoral Treg numbers and suppressive function were significantly increased compared with all other sites but did not display a distinctive phenotype by flow cytometry...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28783464/efficacy-of-multiwave-locked-system-laser-on-pain-and-function-in-patients-with-chronic-neck-pain-a-randomized-placebo-controlled-trial
#14
Mohamed Salaheldien Alayat, Ahmed Mohamed Elsoudany, Mohamed Ebrahim Ali
BACKGROUND: Multiwave locked system (MLS) laser therapy utilizes the synchronized emission of an 808 nm continuous laser and a 905 nm pulsed laser. It is postulated that MLS enables greater penetration and therapeutic benefit than single-wavelength low-level laser therapy (LLLT). OBJECTIVE: The aim of this research was to evaluate the efficacies of MLS laser therapy and the 830 nm laser in the treatment of patients with chronic neck pain (CNP). MATERIALS AND METHODS: Seventy-five patients with CNP (mean age 46...
August 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28774123/floating-hydrogel-with-self-generating-micro-bubbles-for-intravesical-instillation
#15
Tingsheng Lin, Xiaozhi Zhao, Yifan Zhang, Huibo Lian, Junlong Zhuang, Qing Zhang, Wei Chen, Wei Wang, Guangxiang Liu, Suhan Guo, Jinhui Wu, Yiqiao Hu, Hongqian Guo
Intravesical instillation is the main therapy for bladder cancer and interstitial cystitis. However, most drug solutions are eliminated from bladder after the first voiding of urine. To solve this problem, we proposed a floating hydrogel with self-generating micro-bubbles as a new delivery system. It floated in urine, avoiding the urinary obstruction and bladder irritation that ordinary hydrogels caused. In this study, we abandoned traditional gas-producing method like chemical decomposition of NaHCO₃, and used the foamability of Poloxamer 407 (P407) instead...
December 12, 2016: Materials
https://www.readbyqxmd.com/read/28772051/protocol-update-and-preliminary-results-of-eacvi-hfa-cardiac-oncology-toxicity-cot-registry-of-the-european-society-of-cardiology
#16
Patrizio Lancellotti, Maurizio Galderisi, Erwan Donal, Thor Edvardsen, Bogdan A Popescu, Dimitrios Farmakis, Gerasimos Filippatos, Gilbert Habib, Chiara Lestuzzi, Ciro Santoro, Marie Moonen, Guy Jerusalem, Maryna Andarala, Stefan D Anker
AIMS: European Association of Cardiovascular Imaging/Heart Failure Association Cardiac Oncology Toxicity Registry was launched in October 2014 as a European Society of Cardiology multicentre registry of breast cancer patients referred to imaging laboratories for routine surveillance, suspected, or confirmed anticancer drug-related cardiotoxicity (ADRC). After a pilot phase (1 year recruitment and 1 year follow-up), some changes have been made to the protocol (version 1.0) and electronic case report form...
August 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28768081/evaluation-of-the-carefusion-alaris-pc-infusion-pump-for-hyperbaric-oxygen-therapy-conditions-technical-report
#17
Andrew Smale, Theo Tsouras
We present a standardized test methodology and results for our evaluation of the Carefusion Alaris PC infusion pump, comprising the model 8015 PC Unit and the model 8100 Large Volume Pump (LVP) module. The evaluation consisted of basic suitability testing, internal component inspection, surface temperature measurement of selected internal components, and critical performance testing (infusion rate accuracy and occlusion alarm pressure) during conditions of typical hyperbaric oxygen (HBO₂) treatment in our facility's class A multiplace chamber...
January 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28759056/redox-responsive-xanthene-coumarin-chlorambucil-based-fret-guided-theranostics-for-activatable-combination-therapy-with-real-time-monitoring
#18
Moumita Gangopadhyay, Rakesh Mengji, Amrita Paul, Yarra Venkatesh, Venugopal Vangala, Avijit Jana, N D Pradeep Singh
A FRET donor-acceptor xanthene-coumarin conjugate has been designed for redox-regulated synergic treatment of photodynamic therapy and chemotherapy with real-time monitoring. The "locked" FRET pair was selectively "unlocked" by biological reducing thiols via rupture of a sacrificial disulfide linker. A distinct change in fluorescence color and selective cancer cell toxicity were observed in vitro.
July 31, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28752263/photobiomodulation-therapy-by-nir-laser-in-persistent-pain-an-analytical-study-in-the-rat
#19
Laura Micheli, Lorenzo Di Cesare Mannelli, Elena Lucarini, Francesca Cialdai, Leonardo Vignali, Carla Ghelardini, Monica Monici
Over the past three decades, physicians have used laser sources for the management of different pain conditions obtaining controversial results that call for further investigations. In order to evaluate the pain relieving possibilities of photobiomodulation therapy (PBMT), we tested two near infrared (NIR) laser systems, with different power, against various kinds of persistent hyperalgesia animal models. In rats, articular pain was reproduced by the intra-articular injection of sodium monoiodoacetate (MIA) and complete Freund's adjuvant (CFA), while compressive neuropathy was modelled by the chronic constriction injury of the sciatic nerve (CCI)...
July 28, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28742454/lenalidomide-maintenance-after-autologous-stem-cell-transplantation-in-newly-diagnosed-multiple-myeloma-a-meta-analysis
#20
Philip L McCarthy, Sarah A Holstein, Maria Teresa Petrucci, Paul G Richardson, Cyrille Hulin, Patrizia Tosi, Sara Bringhen, Pellegrino Musto, Kenneth C Anderson, Denis Caillot, Francesca Gay, Philippe Moreau, Gerald Marit, Sin-Ho Jung, Zhinuan Yu, Benjamin Winograd, Robert D Knight, Antonio Palumbo, Michel Attal
Purpose Lenalidomide maintenance therapy after autologous stem-cell transplantation (ASCT) demonstrated prolonged progression-free survival (PFS) versus placebo or observation in several randomized controlled trials (RCTs) of patients with newly diagnosed multiple myeloma (NDMM). All studies had PFS as the primary end point, and none were powered for overall survival (OS) as a primary end point. Thus, a meta-analysis was conducted to better understand the impact of lenalidomide maintenance in this setting. Patients and Methods The meta-analysis was conducted using primary-source patient-level data and documentation from three RCTs (Cancer and Leukemia Group B 100104, Gruppo Italiano Malattie Ematologiche dell'Adulto RV-MM-PI-209, and Intergroupe Francophone du Myélome 2005-02) that met the following prespecified inclusion criteria: an RCT in patients with NDMM receiving ASCT followed by lenalidomide maintenance versus placebo or observation with patient-level data available and achieved database lock for primary efficacy analysis...
July 25, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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