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https://www.readbyqxmd.com/read/28341448/the-drosophila-dock-family-protein-sponge-is-required-for-development-of-the-air-sac-primordium
#1
Kazushge Morishita, Dang Ngoc Anh Suong, Hideki Yoshida, Masamitsu Yamaguchi
Dedicator of cytokinesis (DOCK) family genes are known as DOCK1-DOCK11 in mammals. DOCK family proteins mainly regulate actin filament polymerization and/or depolymerization and are GEF proteins, which contribute to cellular signaling events by activating small G proteins. Sponge (Spg) is a Drosophila counterpart to mammalian DOCK3/DOCK4, and plays a role in embryonic central nervous system development, R7 photoreceptor cell differentiation, and adult thorax development. In order to conduct further functional analyses on Spg in vivo, we examined its localization in third instar larval wing imaginal discs...
March 21, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28340317/opportunities-for-crash-and-injury-reduction-a-multi-harm-approach-for-crash-data-analysis
#2
Ann Mallory, Allison Kender, Kevin Moorhouse
OBJECTIVE: A multi-harm approach for analyzing crash and injury data was developed for the ultimate purpose of getting a richer picture of motor vehicle crash outcomes identifying research opportunities in crash safety. METHODS: Methods were illustrated using a retrospective analysis of 69,597 occupant cases from NASS CDS (National Automotive Sampling System Crashworthiness Data System) from 2005 to 2015. Occupant cases were analyzed by frequency and severity of outcome: fatality, injury by AIS (Abbreviated Injury Scale), number of cases, attributable fatality, disability, and injury costs...
March 24, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28332867/age-related-changes-in-thoracic-skeletal-geometry-of-elderly-females
#3
Sven A Holcombe, Stewart C Wang, James B Grotberg
OBJECTIVE: Both females and the elderly have been identified as vulnerable populations with increased injury and mortality risk in multiple crash scenarios. Particularly in frontal impacts, older females show higher risk to the chest and thorax than their younger or male counterparts. Thoracic geometry plays a role in this increase, and this study aims to quantify key parts of that geometry in a way that can directly inform human body models that incorporate the concept of person age...
March 23, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28330926/a-new-crustacean-from-the-herefordshire-silurian-lagerst%C3%A3-tte-uk-and-its-significance-in-malacostracan-evolution
#4
David J Siveter, Derek E G Briggs, Derek J Siveter, Mark D Sutton, David Legg
Cascolus ravitis gen. et sp. nov. is a three-dimensionally preserved fossil crustacean with soft parts from the Herefordshire (Silurian) Lagerstätte, UK. It is characterized by a head with a head shield and five limb pairs, and a thorax (pereon) with nine appendage-bearing segments followed by an apodous abdomen (pleon). All the appendages except the first are biramous and have a gnathobase. The post-mandibular appendages are similar one to another, and bear petal-shaped epipods that probably functioned as a part of the respiratory-circulatory system...
March 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28330921/linking-magnetite-in-the-abdomen-of-honey-bees-to-a-magnetoreceptive-function
#5
Veronika Lambinet, Michael E Hayden, Katharina Reigl, Surath Gomis, Gerhard Gries
Previous studies of magnetoreception in honey bees, Apis mellifera, focused on the identification of magnetic material, its formation, the location of the receptor and potential underlying sensory mechanisms, but never directly linked magnetic material to a magnetoreceptive function. In our study, we demonstrate that ferromagnetic material consistent with magnetite plays an integral role in the bees' magnetoreceptor. Subjecting lyophilized and pelletized bee tagmata to analyses by a superconducting quantum interference device generated a distinct hysteresis loop for the abdomen but not for the thorax or the head of bees, indicating the presence of ferromagnetic material in the bee abdomen...
March 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28330794/radiation-exposure-and-vascular-access-in-acute-coronary-syndromes-the-radmatrix-trial
#6
Alessandro Sciahbasi, Enrico Frigoli, Alessandro Sarandrea, Martina Rothenbühler, Paolo Calabrò, Alessandro Lupi, Francesco Tomassini, Bernardo Cortese, Stefano Rigattieri, Enrico Cerrato, Dennis Zavalloni, Antonio Zingarelli, Paolo Calabria, Paolo Rubartelli, Gennaro Sardella, Matteo Tebaldi, Stephan Windecker, Peter Jüni, Dik Heg, Marco Valgimigli
BACKGROUND: It remains unclear whether radial increases the risk of operator or patient radiation exposure when performed by expert operators OBJECTIVES: To determine whether radial access increases radiation exposure METHODS: We randomly assigned 8404 patients, with or without ST-segment elevation acute coronary syndrome, to radial or femoral access for coronary angiography and percutaneous intervention, and collected fluoroscopy time and dose area product (DAP). In the radiation sub-study (RAD-MATRIX), we anticipated that 13 or more operators, each wearing a thorax (primary endpoint), wrist and head (secondary endpoints) lithium fluoride thermo luminescent dosimeter and randomizing at least 13 patients per access site were needed to establish non-inferiority of radial versus femoral access...
March 15, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28326181/undiagnosed-chronic-obstructive-pulmonary-disease-in-patients-admitted-to-an-acute-assessment-unit
#7
Karin D Eikhof, Kristine R Olsen, N C H Wrengler, Carl Nielsen, Uffe Boedtger, Ingrid L Titlestad, Ulla M Weinreich
Introduction: Chronic obstructive pulmonary disease (COPD) is very prevalent worldwide, yet underdiagnosed. Aim: This study investigates feasibility of performing spirometry in patients in need of acute hospital admission as well as the prevalence of undiagnosed COPD in the same cohort. Methods: During a two-week period, all patients admitted to three large acute assessment units were evaluated. Patients ≥ 18 years, able to perform spirometry, with no surgery to the thorax or abdomen within the last weeks and no known COPD was included...
2017: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28325757/loss-of-cd73-prevents-accumulation-of-alternatively-activated-macrophages-and-the-formation-of-prefibrotic-macrophage-clusters-in-irradiated-lungs
#8
Simone de Leve, Florian Wirsdörfer, Federica Cappuccini, Alexandra Schütze, Alina V Meyer, Katharina Röck, Linda F Thompson, Jens W Fischer, Martin Stuschke, Verena Jendrossek
While radiotherapy is a mainstay for cancer therapy, pneumonitis and fibrosis constitute dose-limiting side effects of thorax and whole body irradiation. So far, the contribution of immune cells to disease progression is largely unknown. Here we studied the role of ecto-5'-nucelotidase (CD73)/adenosine-induced changes in the myeloid compartment in radiation-induced lung fibrosis. C57BL/6 wild-type or CD73(-/-) mice received a single dose of whole thorax irradiation (WTI, 15 Gy). Myeloid cells were characterized in flow cytometric, histologic, and immunohistochemical analyses as well as RNA analyses...
March 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28324965/high-dielectric-material-in-mri-numerical-assessment-of-the-reduction-of-the-induced-local-power-on-implanted-cardiac-leads
#9
Eugenio Mattei, Elena Lucano, Federica Censi, Leonardo M Angelone, Giovanni Calcagnini
High dielectric materials (HDM) have been proposed in magnetic resonance imaging (MRI) to increase the signal-to-noise ratio (SNR) of the images acquired while reducing the radiofrequency (RF) absorption in tissue. The aim of this study is to assess the potential merit of using HDM to reduce power induced at the tip of an endocardial lead in patients undergoing MRI. Numerical simulations were performed using a commercial finite-differences time-domain (FDTD) software to model the RF field generated by a birdcage body coil at 64 MHz on a human body model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322426/diagnostic-value-of-contrast-enhanced-magnetic-resonance-angiography-in-large-vessel-vasculitis
#10
Sabine Adler, Marco Sprecher, Felix Wermelinger, Thorsten Klink, Harald Bonel, Peter M Villiger
OBJECTIVE: To evaluate contrast-enhanced magnetic resonance angiography (MRA) in diagnosis of inflammatory aortic involvement in patients with clinical suspicion of large-vessel vasculitis. PATIENTS AND METHODS: Seventy-five patients, mean age 62 years (range 16-82 years), 44 female and 31 male, underwent gadolinium-enhanced MRA and were evaluated retrospectively. Thoracic MRA was performed in 32 patients, abdominal MRA in 7 patients and both thoracic and abdominal MRA in 36 patients...
March 21, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28320555/a-population-based-statistical-model-for-daily-geometric-variations-in-the-thorax
#11
Yenny Z Szeto, Marnix G Witte, Marcel van Herk, Jan-Jakob Sonke
PURPOSE: To develop a population based statistical model of the systematic interfraction geometric variations between the planning CT and first treatment week of lung cancer patients for inclusion as uncertainty term in future probabilistic planning. MATERIALS AND METHODS: Deformable image registrations between the planning CT and first week CBCTs of 235 lung cancer patients were used to generate deformation vector fields (DVFs) representing the geometric variations of lung cancer patients...
March 17, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28306594/extending-normothermic-regional-perfusion-to-the-thorax-in-donors-after-circulatory-death
#12
Steven S L Tsui, Gabriel C Oniscu
PURPOSE OF REVIEW: Despite a significant increase in the utilization of donors after circulatory death (DCD), the number of organs recovered and their function are largely inferior to those from donors after brain death. This review summarizes recent advances in in-situ normothermic regional perfusion of DCD organs prior to procurement. RECENT FINDINGS: The combination of warm and cold ischemia in DCD donation are detrimental to organ function. As a consequence, the acceptance criteria are far more restrictive and many organs are discarded...
March 16, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28303893/changes-in-mirna-in-the-lung-and-whole-blood-after-whole-thorax-irradiation-in-rats
#13
Feng Gao, Pengyuan Liu, Jayashree Narayanan, Meiying Yang, Brian L Fish, Yong Liu, Mingyu Liang, Elizabeth R Jacobs, Meetha Medhora
We used a rat model of whole thorax x-ray irradiation to profile the microRNA (miRNA) in lung and blood up to 4 weeks after radiation. MiRNA from normal and irradiated Wistar rat lungs and whole blood were analyzed by next-generation sequencing and the changes by radiation were identified by differential deRNA-seq 1, 2, 3 and 4 weeks after irradiation. The average total reads/library was 2,703,137 with a mean of 88% mapping to the rat genome. Detailed profiles of 100 of the most abundant miRNA in rat blood and lung are described...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302227/anaesthetic-concerns-of-surgical-emphysema-following-thyroidectomy
#14
Sanum Kashif, Amna Gulrez
Surgical emphysema secondary to tracheal tear is a rare but serious complication after thyroidectomy. It is usually resolved by conservative management; but in case of compromised airway, early airway control and surgical intervention is required. This is the case report of a 52-year woman diagnosed as thyroid carcinoma, who developed rapidly progressive surgical emphysema involving head and upper thorax, following total thyroidectomy, in post anesthesia care unit (PACU). The complication was related to tracheal tear occurring during excision of huge thyroid mass, encroaching trachea...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28298944/4-point-ultrasonography-to-confirm-the-correct-position-of-the-nasogastric-tube-in-114-critically-ill-patients
#15
Marianna Zatelli, Norberto Vezzali
PURPOSE: Nasogastric feeding tube is routinely positioned in intensive care units. The complications of misplacement are rare but very dangerous for the patients. The aim of this study is to estimate the diagnostic accuracy of this new technique, 4-point ultrasonography to confirm nasogastric tube placement in intensive care. METHODS: One hundred fourteen critical ill patients monitored in ICU were included. The intensivist provided in real time to perform the exam in four steps: sonography from either the right or left side of the patient's neck to visualize the esophagus, sonography of epigastrium to confirm the passage through the esophagogastric junction and the positioning in antrum, sonography of the fundus...
March 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28298577/trauma-imaging-a-literature-review
#16
Jason Heath Vela, Christopher Ira Wertz, Kimberly L Onstott, Joss R Wertz
PURPOSE: To inform radiologic technologists about which imaging modalities and examinations are best suited for evaluating specific anatomical structures in patients who have sustained a traumatic injury. METHODS: Two scholarly research databases were searched to identify articles focused on trauma imaging of the head, cervical spine, thorax, abdomen, and pelvis. Articles focused on trauma diagnosis were excluded. Thirty-two articles were selected for analysis. DISCUSSION: Physical examination and plain-film radiographs typically are used to assess nasal bone fracures...
January 2017: Radiologic Technology
https://www.readbyqxmd.com/read/28297322/evaluation-of-the-tool-reg-refine-for-user-guided-deformable-image-registration
#17
Perry B Johnson, Kyle R Padgett, Kuan L Chen, Nesrin Dogan
"Reg Refine" is a tool available in the MIM Maestro v6.4.5 platform (www.mimsoftware.com) that allows the user to actively participate in the deformable image registration process. The purpose of this work was to evaluate the efficacy of this tool and investigate strategies for how to apply it effectively. This was done by performing DIR on two publicly available ground-truth models, the Pixel-based Breathing Thorax Model (POPI) for lung, and the Deformable Image Registration Evaluation Project (DIREP) for head and neck...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297308/investigation-of-the-optimum-location-of-external-markers-for-patient-setup-accuracy-enhancement-at-external-beam-radiotherapy
#18
Payam Samadi Miandoab, Ahmad Esmaili Torshabi, Saber Nankali
In external beam radiotherapy, one of the most common and reliable methods for patient geometrical setup and/or predicting the tumor location is use of external markers. In this study, the main challenging issue is increasing the accuracy of patient setup by investigating external markers location. Since the location of each external marker may yield different patient setup accuracy, it is important to assess different locations of external markers using appropriate selective algorithms. To do this, two commercially available algorithms entitled a) canonical correlation analysis (CCA) and b) principal component analysis (PCA) were proposed as input selection algorithms...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297278/dosimetric-assessment-of-brass-mesh-bolus-for-postmastectomy-photon-radiotherapy
#19
Ryan Manger, Adam Paxton, Laura Cerviño
Brass mesh bolus has been shown to be an acceptable substitute for tissue-equivalent bolus to increase superficial dose for chest wall tangent photon radiotherapy. This work investigated the increase in surface dose, the change in the dose at depth, and the safety implications of higher energy photon beams when using brass mesh bolus for postmastectomy chest wall radiotherapy. A photon tangent plan was delivered to a thorax phantom, and the superficial dose ranged from 40%-72% of prescription dose with no bolus...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28296730/image-quality-evaluation-for-care-kv-technique-combined-with-iterative-reconstruction-for-chest-computed-tomography-scanning
#20
RANDOMIZED CONTROLLED TRIAL
Bin Yang, Zheng-Liang Li, Yi Gao, Ya-Ying Yang, Wei Zhao
BACKGROUND: To investigate the radiation dose and image quality for iterative reconstruction combined with the CARE kV technique in chest computed tomography (CT) scanning for physical examination. METHODS: A total of 130 patients who underwent chest CT scanning were randomly chosen and the quality reference value was set as 80 mAs. The scanning scheme was set and the patients were randomly divided into groups according to the scanning scheme. Sixty patients underwent a chest scan with 100 kV using the CARE kV technique and SAFIRE reconstruction (value=3) (experimental group) and the other 70 patients underwent chest scanning with 120 kV (control group)...
March 2017: Medicine (Baltimore)
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