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https://www.readbyqxmd.com/read/28644151/ecg-based-4d-dose-reconstruction-of-cardiac-arrhythmia-ablation-with-carbon-ion-beams-application-in-a-porcine-model
#1
Daniel Richter, H Immo Lehmann, Anna Eichhorn, Anna M Constantinescu, Robert Kaderka, Matthias Prall, Patrick Lugenbiel, Mitsuru Takami, Dierk Thomas, Christoph Bert, Marco Durante, Douglas L Packer, Christian Graeff
Noninvasive ablation of cardiac arrhythmia by scanned particle radiotherapy is highly promising, but especially challenging due to cardiac and respiratory motion. Irradiations for catheter-free ablation in intact pigs were carried out at the GSI Helmholtz Center in Darmstadt using scanned carbon ions. Here, we present real-time electrocardiogram (ECG) data to estimate time-resolved (4D) delivered dose. For 11 animals, surface ECGs and temporal structure of beam delivery were acquired during irradiation. R waves were automatically detected from surface ECGs...
June 23, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28643878/frameless-stereotactic-radiotherapy-alone-and-combined-with-temozolomide-for-presumed-canine-gliomas
#2
M Dolera, L Malfassi, C Bianchi, N Carrara, S Finesso, S Marcarini, G Mazza, S Pavesi, M Sala, G Urso
We evaluated stereotactic volume modulated arc radiotherapy (VMAT) for canine gliomas, alone (radiotherapy [RT]) and in combination with temozolomide (RT + TMZ), compared with palliation. Overall and disease-specific survival times were estimated. Thirty dogs were palliated, 22 dogs were treated with RT and 20 with RT + TMZ. Complete and partial responses were observed in 63.2% and 90.9% of patients in the RT and RT + TMZ arms, respectively, that were alive at 1 year. Median survival in the palliation arm was 94 days (95% conformity index [CI] 87÷101)...
June 23, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28643434/improved-yield-of-minimal-proportional-sample-volume-platelet-bacterial-culture
#3
Hany Kamel, Mary Townsend, Marjorie Bravo, Ralph R Vassallo
BACKGROUND: Reports of septic transfusion reactions (STRs) after transfusion of culture-negative platelets (PLTs) justify more effective prevention strategies. Pathogen reduction technologies or performance of additional point-of-issue testing are proposed strategies to enhance safety through Day 5 of storage. STUDY DESIGN AND METHODS: Trima leukoreduced apheresis PLTs (APs) were collected during two study periods (45 and 31 months) using standard procedures, with target settings adjusted during the second period to maintain split rate after increased culture volume...
June 22, 2017: Transfusion
https://www.readbyqxmd.com/read/28642876/magnetic-separation-methods-for-the-detection-of-mycobacterium-avium-subsp-paratuberculosis-in-various-types-of-matrices-a-review
#4
REVIEW
Marketa Husakova, Radka Dziedzinska, Iva Slana
The main reasons to improve the detection of Mycobacterium avium subsp. paratuberculosis (MAP) are animal health and monitoring of MAP entering the food chain via meat, milk, and/or dairy products. Different approaches can be used for the detection of MAP, but the use of magnetic separation especially in conjunction with PCR as an end-point detection method has risen in past years. However, the extraction of DNA which is a crucial step prior to PCR detection can be complicated due to the presence of inhibitory substances...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28642310/metabolomics-analysis-identifies-sex-associated-metabotypes-of-oxidative-stress-and-the-autotaxin-lysopa-axis-in%C3%A2-copd
#5
Shama Naz, Johan Kolmert, Mingxing Yang, Stacey N Reinke, Muhammad Anas Kamleh, Stuart Snowden, Tina Heyder, Bettina Levänen, David J Erle, C Magnus Sköld, Åsa M Wheelock, Craig E Wheelock
Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease and a leading cause of mortality and morbidity worldwide. The aim of this study was to investigate the sex dependency of circulating metabolic profiles in COPD.Serum from healthy never-smokers (healthy), smokers with normal lung function (smokers), and smokers with COPD (COPD; Global Initiative for Chronic Obstructive Lung Disease stages I-II/A-B) from the Karolinska COSMIC cohort (n=116) was analysed using our nontargeted liquid chromatography-high resolution mass spectrometry metabolomics platform...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28642309/long-term-volume-targeted-pressure-controlled-ventilation-sense%C3%A2-or%C3%A2-nonsense
#6
REVIEW
Maria Paola Arellano-Maric, Cesare Gregoretti, Marieke Duivermann, Wolfram Windisch
The technology underlying the development of novel ventilatory modes for long-term noninvasive ventilation of patients with chronic hypercapnia is continuously evolving. Volume-targeted pressure-controlled ventilation is a hybrid ventilation mode designed to combine the advantages of conventional ventilation modes, while avoiding their drawbacks. However, manufacturers have created different names and have patented algorithms and set-up variables, which can result in confusion for physicians and respiratory therapists...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28642308/predicting-risk-of-undiagnosed-copd-development-and-validation-of-the-targetcopd-score
#7
Shamil Haroon, Peymane Adab, Richard D Riley, David Fitzmaurice, Rachel E Jordan
Chronic obstructive pulmonary disease (COPD) is greatly underdiagnosed worldwide and more efficient methods of case-finding are required. We developed and externally validated a risk score to identify undiagnosed COPD using primary care records.We conducted a retrospective cohort analysis of a pragmatic cluster randomised controlled case-finding trial in the West Midlands, UK. Participants aged 40-79 years with no prior diagnosis of COPD received a postal or opportunistic screening questionnaire. Those reporting chronic respiratory symptoms were assessed with spirometry...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28642196/gdf5-significantly-augments-the-bone-formation-induced-by-an-injectable-plga-fiber-reinforced-brushite-forming-cement-in-a-sheep-defect-model-of-lumbar-osteopenia
#8
Matthias Bungartz, Elke Kunisch, Stefan Maenz, Victoria Horbert, Long Xin, Francesca Gunnella, Joerg Mika, Juliane Borowski, Sabine Bischoff, Harald Schubert, Andre Sachse, Bernhard Illerhaus, Jens Günster, Jörg Bossert, Klaus D Jandt, Frank Plöger, Raimund W Kinne, Olaf Brinkmann
BACKGROUND CONTEXT: Biodegradable calcium phosphate cement (CPC) represents a promising option for the surgical treatment of osteoporotic vertebral fractures. Due to augmented local bone catabolism, however, additional targeted delivery of bone morphogenetic proteins with the CPC may be needed to promote rapid and complete bone regeneration. PURPOSE: In the present study, an injectable, poly (l-lactide-co-glycolide) acid (PLGA)-fiber reinforced, brushite-forming cement (CPC) containing the bone morphogenetic protein GDF5 was tested in a sheep lumbar osteopenia model...
June 19, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28641842/long-term-clinical-outcomes-of-patients%C3%A2-treated-with-everolimus-eluting-bioresorbable-stents-in-routine-practice-2-year-results-of-the-isar-absorb-registry
#9
Jens Wiebe, Petra Hoppmann, Roisin Colleran, Sebastian Kufner, Michael Valeskini, Salvatore Cassese, Simon Schneider, Michael Joner, Heribert Schunkert, Karl-Ludwig Laugwitz, Adnan Kastrati, Robert A Byrne
OBJECTIVES: The aim of this study was to report clinical outcomes in patients treated in routine practice 2 years after everolimus-eluting bioresorbable stent (BRS) implantation. BACKGROUND: Long-term results in patients undergoing BRS implantation in routine clinical practice are sparse, and existing evidence from randomized trials considers mostly selected patients. METHODS: The ISAR-ABSORB registry enrolled consecutive patients undergoing BRS implantation in routine clinical practice at 2 high-volume centers in Germany...
June 26, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28640104/the-easytube-during-general-anesthesia-for-minor-surgery-a-randomized-controlled-trial
#10
Oliver Robak, Sonia Vaida, Luis Gaitini, Andreas Thierbach, Ricardo Urtubia, Peter Krafft, Michael Frass
BACKGROUND: The EasyTube (EzT) is a supraglottic airway device that is used for emergency airway situations. Ventilation during general anesthesia should also be feasible, but literature on the EzT is scarce. We evaluated the EzT in comparison with the endotracheal tube (ETT) in its use during general anesthesia in a comparative study. METHODS: A total of 400 patients with American Society of Anesthesiologists (ASA) physical status I to II scheduled for minor surgery in 4 centers were randomized for ventilation via the ETT or EzT...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639942/commissioning-of-the-tongue-and-groove-modelling-in-treatment-planning-systems-from-static-fields-to-vmat-treatments
#11
Victor Hernandez, Juan Antonio Vera-Sánchez, Laure Vieillevigne, Jordi Saez
Adequate modelling of the multi-leaf collimator (MLC) by treatment planning systems (TPS) is essential for accurate dose calculations in intensity-modulated radiation-therapy. For this reason modern TPSs incorporate MLC characteristics such as the leaf end curvature, MLC transmission and the tongue-and-groove. However, the modelling of the tongue-and-groove is often neglected during TPS commissioning and it is not known how accurate it is. This study evaluates the dosimetric consequences of the tongue-and-groove effect for two different MLC models using both film dosimetry and ionisation chambers...
June 22, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28639355/how-do-the-characteristics-of-breast-cancer-diagnostic-assessment-programmes-influence-service-delivery-a-mixed-methods-study
#12
A R Gagliardi, G Honein-AbouHaidar, T Stuart-McEwan, J Smylie, A Arnaout, J Seely, F C Wright, M J Dobrow, M C Brouwers, K Bukhanov, D R McCready
Diagnostic assessment programmes (DAPs) coordinate multidisciplinary teamwork (MDT), and improve wait times and patient satisfaction. No research has established optimal DAP design. This study explored how DAP characteristics influence service delivery. A mixed methods case study of four breast cancer DAPs was conducted including qualitative interviews with health-care providers and retrospective chart review. Data were integrated using multiple approaches. Twenty-three providers were interviewed; 411 medical records were reviewed...
June 21, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28639200/treatment-of-liver-cancer-by-c-ebpa-sarna
#13
Xiaoyang Zhao, Jon Voutila, Stephanos Ghobrial, Nagy A Habib, Vikash Reebye
The prognosis for hepatocellular carcinoma (HCC) remains poor and has not improved in over two decades. Most patients with advanced HCC who are not eligible for surgery have limited treatment options due to poor liver function or large, unresectable tumors. Although sorafenib is the standard-of-care treatment for these patients, only a small number respond. For the remaining, the outlook remains bleak. A better approach to target "undruggable" molecular pathways that reverse HCC is therefore urgently needed...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28638983/treatment-of-benign-thyroid-nodules-by-high-intensity-focused-ultrasound-hifu-at-different-acoustic-powers-a-study-on-in-silico-phantom
#14
Fabiano Bini, Pierpaolo Trimboli, Franco Marinozzi, Luca Giovanella
BACKGROUND: The non-surgical therapies of benign thyroid nodules are gaining momentum due to the possibility to reduce the nodule's volume and avoid surgery. As the last technique introduced, high intensity focused ultrasound allows the thermal tissue treatment by directing energy inside the targeted nodule with no invasive instruments. In the present study we applied the Food and Drug Administration high intensity focused ultrasound simulator to in-silico phantom to evaluate the effects obtained by different acoustic powers...
June 21, 2017: Endocrine
https://www.readbyqxmd.com/read/28638702/cerebral-blood-flow-evaluation-of-intensive-rosuvastatin-therapy-in-stroke-transient-ischemic-attack-patients-with-intracranial-arterial-atherosclerotic-stenosis-study-rationale%C3%A2-and-design
#15
Xuting Zhang, Ying Zhou, Sheng Zhang, Wenhong Ding, Min Lou
INTRODUCTION: The risk of recurrent stroke is high in patients with intracranial atherosclerotic stenosis (ICAS). Statin use has been demonstrated to decrease the incidence of stroke by reducing atherosclerotic plaque burden. However, its effect on the hemodynamic situation and cerebral perfusion status has not yet been validated. With the use of computed tomography perfusion (CTP), we aim to evaluate the impact of Rosuvastatin on cerebral hemodynamic changes, as well as the downstream perfusion...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28638456/temozolomide-and-bevacizumab-induction-before-chemoradiotherapy-in-patients-with-bulky-glioblastoma-and-or-with-severe-neurological-impairment
#16
Ilan Darmon, Mony Chenda Morisse, Alexandre Coutte, Marie Blonski, Emilie Le Rhun, Luc Taillandier, Diana Bello Roufai, Christine Desenclos, Stéphanie Trudel, Jean-Christophe Faivre, Nicolas Blanchard, Bruno Chauffert, Mathieu Boone
Background. New approaches are needed for patients newly diagnosed with bulky glioblastoma (GB) and/or with severe neurological impairment that cannot benefit from first line temozolomide (TMZ)-based chemoradiotherapy. Bevacizumab (BEV), an antiangiogenic anti-VEGF-R monoclonal antibody, has a rapid impact on tumor-related brain edema in recurrent GB. The present study reports the feasibility and efficacy of an induction treatment with TMZ and BEV to alleviate the initial neurological impairment and/or to reduce the tumor volume before a delayed chemoradiotherapy...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28637483/analyzing-human-decisions-in-igrt-of-head-and-neck-cancer-patients-to-teach-image-registration-algorithms-what-experts-know
#17
Eva Maria Stoiber, Nina Bougatf, Hendrik Teske, Christian Bierstedt, Dieter Oetzel, Jürgen Debus, Rolf Bendl, Kristina Giske
BACKGROUND: In IGRT of deformable head-and-neck anatomy, patient setup corrections are derived by rigid registration methods. In practice, experienced radiation therapists often correct the resulting vectors, thus indicating a different prioritization of alignment of local structures. Purpose of this study is to transfer the knowledge experts apply when correcting the automatically generated result (pre-match) to automated registration. METHODS: Datasets of 25 head-and-neck-cancer patients with daily CBCTs and corresponding approved setup correction vectors were analyzed...
June 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28637386/enzymes-and-enzyme-activity-encoded-by-nonenveloped-viruses
#18
Kimi Azad, Manidipa Banerjee, John E Johnson
Viruses are obligate intracellular parasites that rely on host cell machineries for their replication and survival. Although viruses tend to make optimal use of the host cell protein repertoire, they need to encode essential enzymatic or effector functions that may not be available or accessible in the host cellular milieu. The enzymes encoded by nonenveloped viruses-a group of viruses that lack any lipid coating or envelope-play vital roles in all the stages of the viral life cycle. This review summarizes the structural, biochemical, and mechanistic information available for several classes of enzymes and autocatalytic activity encoded by nonenveloped viruses...
June 21, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28637378/surveillance-to-inform-control-of-emerging-plant-diseases-an-epidemiological-perspective
#19
Stephen Parnell, Frank van den Bosch, Tim Gottwald, Christopher A Gilligan
The rise in emerging pathogens and strains has led to increased calls for more effective surveillance in plant health. We show how epidemiological insights about the dynamics of disease spread can improve the targeting of when and where to sample. We outline some relatively simple but powerful statistical approaches to inform surveillance and describe how they can be adapted to include epidemiological information. This enables us to address questions such as: Following the first report of an invading pathogen, what is the likely incidence of disease? If no cases of disease have been found, how certain can we be that the disease was not simply missed by chance? We illustrate the use of spatially explicit stochastic models to optimize targeting of surveillance and control resources...
June 21, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28637377/the-candidatus-liberibacter-host-interface-insights-into-pathogenesis-mechanisms-and-disease-control
#20
Nian Wang, Elizabeth A Pierson, João Carlos Setubal, Jin Xu, Julien G Levy, Yunzeng Zhang, Jinyun Li, Luiz Thiberio Rangel, Joaquim Martins
"Candidatus Liberibacter" species are associated with economically devastating diseases of citrus, potato, and many other crops. The importance of these diseases as well as the proliferation of new diseases on a wider host range is likely to increase as the insects vectoring the "Ca. Liberibacter" species expand their territories worldwide. Here, we review the progress on understanding pathogenesis mechanisms of "Ca. Liberibacter" species and the control approaches for diseases they cause. We discuss the Liberibacter virulence traits, including secretion systems, putative effectors, and lipopolysaccharides (LPSs), as well as other important traits likely to contribute to disease development, e...
June 21, 2017: Annual Review of Phytopathology
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