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https://www.readbyqxmd.com/read/28550674/-a-comparison-of-dosimetric-variance-for-external-beam-partial-breast-irradiation-using-three-dimensional-and-four-dimensional-computed-tomography
#1
B Guo, J B Li, W Wang, M Xu, Q Shao, T H Liu
Objective: To investigate the potential dosimetric benefits of four-dimensional computed tomography (4DCT) compared to three-dimensional CT (3DCT) in the planning of radiotherapy for external-beam partial breast irradiation (EB-PBI). Methods: Three-DCT and 4DCT scan sets were acquired for 20 patients who underwent EB-PBI. For each patient a conventional 3D conformal plan (3D-CRT) was generated based on end-inhalation phase (EI). The treatment plan based on the 4DCT EI phase images was copied and applied to the end-exhalation phase (EE) and 3DCT images (defined as EB-PBI(EI), EB-PBI(EE), EB-PBI(3D), respectively)...
April 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28549971/tpp-dendrimer-nanocarriers-for-sirna-delivery-to-the-pulmonary-epithelium-and-their-dry-powder-and-metered-dose-inhaler-formulations
#2
Elizabeth Bielski, Qian Zhong, Hamad Mirza, Matthew Brown, Ashura Molla, Teresa Carvajal, Sandro R P da Rocha
The regulation of genes utilizing the RNA interference (RNAi) mechanism via the delivery of synthetic siRNA has great potential in the treatment of a variety of lung diseases. However, the delivery of siRNA to the lungs is challenging due to the poor bioavailability siRNA when delivered intraveneously, and difficulty in formulating and maintaining the activity of free siRNA when delivered directly to the lungs using inhalation devices. The use of non-viral vectors such as cationic dendrimers can help enhance the stability of siRNA and its delivery to the cell cytosol...
May 23, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28549766/plasticity-of-immune-system-vs-memory-therapy-ist
#3
A Tammaro, I Romano, F Persechino, F R Parisella, I Trimarchi, S Persechino
BACKGROUND: Pharmacotherapy and immunotherapy are the main treatments for allergic diseases to inhalants. OBJECTIVE: This study investigates whether to repeat short cycles of immunotherapy after 3 or 5 years the from interruption of the first therapeutic cycle, lasting 3-4 years, to maintain immune memory in individuals subjected to IST. METHODS AND RESULTS: We have compared two groups, one of 452 patients who, after the first treatment for 3-4 years of IST, performed a cycle of four months after three and 10 years from the suspension, and a second group of 126 individuals who have performed only the IST treatment for 3-4 years...
May 23, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28549677/enhanced-expression-of-organic-cation-transporters-in-bronchial-epithelial-cell-layers-following-insults-associated-with-asthma-impact-on-salbutamol-transport
#4
M Mukherjee, E Cingolani, D I Pritchard, C Bosquillon
Increasing evidence suggests Organic Cation Transporters (OCT) might facilitate the absorption of inhaled bronchodilators, including salbutamol, across the lung epithelium. This is essentially scarred and inflamed in asthma. Accordingly, the impact of epithelial insults relevant to asthma on OCT expression and salbutamol transport was evaluated in air-liquid interfaced layers of the human broncho-epithelial cell line Calu-3. These were physically injured and allowed to recover for 48h or exposed to the pro-inflammatory stimulant lipopolysaccharide (LPS) for 48h and the aeroallergen house dust mite (HDM) for 8h twice over 48h...
May 23, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28548896/implementation-of-asthma-clinical-practice-guidelines-in-primary-care-a-cross-sectional-study-based-on-the-knowledge-to-action-cycle
#5
Myriam E Gagné, Louis-Philippe Boulet
OBJECTIVE: Based on the Knowledge-to-Action Cycle, we assessed the self-reported implementation and perception of asthma clinical practice guideline (CPG) recommendations in primary care physicians (PCPs), along with the barriers and facilitators to CPG use in primary care. METHODS: We conducted a cross-sectional study. Using the extended Asthma Physicians' Practice Assessment Questionnaire(©), PCPs self-reported the following: their knowledge of 15 key asthma CPG recommendations, the perceived usefulness of each of these recommendations, their motivation to apply these recommendations, and their agreement with the content of these recommendations...
May 26, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28548868/inhaled-corticosteroid-prescribing-in-a-pediatric-emergency-department-sustained-success-and-prescription-filling-rates
#6
Sarah Nicole Adams, Mary Abel, Dustin Fowler, Jennifer Braden, Myla D Ebeling, Annie N Simpson, M Olivia Titus, Annie Lintzenich Andrews
OBJECTIVE: To determine if improvement in Inhaled Corticosteroid (ICS) prescribing in the pediatric emergency department (PED) can be sustained after transition from intense intervention to low-intervention phase, and to determine ICS fill rates. METHODS: A Quality Improvement (QI) project began in Aug 2012. Results through Feb 2014 were previously published. In Feb 2014 interventions were scaled back to determine the sustainability of QI success. Eligible patients included children aged 2-17 seen in the PED for asthma between Feb 2014 and Sept 2016...
May 26, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28548223/cannabis-smoking-and-cardiovascular-health-it-s-complicated
#7
M R Piano
Many states have legalized cannabis use for treatment of certain medical conditions or have legalized cannabis for recreational use. Consequently, cannabis use prevalence has escalated, giving rise to concerns about potential health effects. Cannabis smoking remains the most prevalent route of administration and is associated with inhalation of chemical toxicants. The aim of this article is to summarize the effects of cannabis smoking on the vasculature and occurrence of cardiovascular (CV) events such as myocardial infarction (MI) and stroke...
May 26, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28548038/marek-s-disease-virus-infection-of-phagocytes-a-de-novo-in-vitro-infection-model
#8
Pankaj Chakraborty, Lonneke Vervelde, Robert G Dalziel, Peter S Wasson, Venugopal Nair, Bernadette M Dutia, Pete Kaiser
Marek's disease virus (MDV) is an alphaherpesvirus that induces T-cell lymphomas in chickens. Natural infections in vivo are caused by the inhalation of infected poultry house dust and it is presumed that MDV infection is initiated in the macrophages from where the infection is passed to B cells and activated T cells. Virus can be detected in B and T cells and macrophages in vivo, and both B and T cells can be infected in vitro. However, attempts to infect macrophages in vitro have not been successful. The aim of this study was to develop a model for infecting phagocytes [macrophages and dendritic cells (DCs)] with MDV in vitro and to characterize the infected cells...
May 26, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28546381/adjunct-therapies-for-refractory-status-asthmaticus-in-children
#9
Kyle J Rehder
Asthma exacerbation is a common reason for children to present to the emergency department. If primary therapies fail to halt the progression of an asthma flare, status asthmaticus often leads to hospital, and potentially ICU, admission. Following the initial administration of inhaled β agonists and systemic corticosteroids, a wide array of adjunct medical therapies may be used to treat status asthmaticus. Unfortunately, the data supporting the use of these adjunct therapies are often unclear, conflicting, or absent...
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28546372/inhaled-pulmonary-vasodilators-are-there-indications-within-the-pediatric-icu
#10
Bradley A Kuch, Alvin L Saville, Joan Sanchez De Toledo, Shekhar T Venkataraman
Inhaled nitric oxide (INO) is only FDA-cleared for neonates (> 34 weeks gestation) with hypoxic respiratory failure-associated pulmonary hypertension. Off-label use of INO is common in the pediatric population despite a lack of evidence regarding survival benefit, questioning whether the therapy should be considered outside the neonatal period. A lack of definitive evidence combined with increasing health-care costs has led to the use of less costly inhaled prostacyclin as an alternative to INO, presenting unique patient safety concerns...
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28546371/pediatric-aerosol-therapy
#11
Ariel Berlinski
Inhaled medications are the mainstay of therapy for many pediatric pulmonary diseases. Device and delivery technique selection is key to improving lung deposition of inhaled drugs. This paper will review the subject in relationship to several pediatric clinical situations: acute pediatric asthma, transnasal aerosol delivery, delivery through tracheostomies, and delivery during noninvasive and invasive mechanical ventilation. This review will focus on the pediatric age group and will not include neonates.
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28546011/-internal-carotid-artery-dissection-after-laparoscopic-surgery
#12
Esperanza Martín-Mateos, Manuel Ángel Gómez-Ríos, Enrique Freire-Vila
Headache is a common symptom in the postoperative period and may be attributable to, dehydration, sleep deprivation, intentional or inadvertent dural puncture during a neuraxial anesthesia technique, from an inhaled anesthetic agent, or from specific surgical procedures, among other etiologies. However, more serious, uncommon and life-threatening conditions as carotid artery dissection can be associated with severe neurologic sequelae in otherwise young, healthy patients. For these reasons, clinicians involved with postoperative patients should be familiar with the presentation and management strategies for this complication...
May 22, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28545978/benralizumab-for-patients-with-mild-to-moderate-persistent-asthma-bise-a-randomised-double-blind-placebo-controlled-phase-3-trial
#13
Gary T Ferguson, J Mark FitzGerald, Eugene R Bleecker, Michel Laviolette, David Bernstein, Craig LaForce, Lyndon Mansfield, Peter Barker, Yanping Wu, Maria Jison, Mitchell Goldman
BACKGROUND: Benralizumab is a humanised, anti-interleukin 5 receptor α monoclonal antibody that directly and rapidly depletes eosinophils, reduces asthma exacerbations, and improves lung function for patients with severe eosinophilic asthma. The objective of this trial was to assess the safety and efficacy of benralizumab for patients with mild to moderate, persistent asthma. METHODS: In this randomised, double-blind, placebo-controlled, phase 3 trial, we recruited patients aged 18-75 years, weighing at least 40 kg, and with a postbronchodilator reversibility in forced expiratory volume in 1 s (FEV1) of at least 12% at screening, from 52 clinical research centres in six countries...
May 22, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28545825/the-effect-of-anesthetic-drug-choice-on-accuracy-of-high-definition-oscillometry-in-laterally-recumbent-horses
#14
Tanya Duke-Novakovski, Barbara Ambros, Cindy Feng, Anthony P Carr
OBJECTIVE: To determine the accuracy of high-definition oscillometry (HDO) for arterial pressure measurement during injectable or inhalation anesthesia in horses. STUDY DESIGN: Prospective, clinical study. ANIMALS: Twenty-four horses anesthetized for procedures requiring lateral recumbency. METHODS: Horses were premedicated with xylazine, and anesthesia induced with diazepam-ketamine. Anesthesia was maintained with xylazine-ketamine-guaifenesin combination [TripleDrip (TD; n = 12) or isoflurane (ISO; n = 12)]...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28545804/knemometry-assessment-of-short-term-growth-in-children-with-asthma-receiving-fluticasone-furoate-for-2-weeks-a-randomized-placebo-controlled-crossover-trial
#15
Ole D Wolthers, Sally Stone, Philippe Bareille, Susan Tomkins, Sanjeev Khindri
PURPOSE: A dry powder inhaler formulation of the inhaled corticosteroid fluticasone furoate (FF) is being evaluated for use in children. An important potential risk associated with the use of inhaled corticosteroids in children is growth suppression. Therefore, the aim of this study was to assess the short-term lower leg growth in children with asthma treated for 2 weeks with inhaled FF versus placebo from the ELLIPTA inhaler. METHODS: Prepubertal children with persistent asthma (n = 60; aged 5 to <12 years) were recruited into a randomized, double-blind, placebo-controlled, 2-way crossover, noninferiority study...
May 22, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28545487/inhaled-ambient-level-traffic-derived-particulates-decrease-cardiac-vagal-influence-and-baroreflexes-and-increase-arrhythmia-in-a-rat-model-of-metabolic-syndrome
#16
Alex P Carll, Samir M Crespo, Mauricio S Filho, Douglas H Zati, Brent A Coull, Edgar A Diaz, Rodrigo D Raimundo, Thomas N G Jaeger, Ana Laura Ricci-Vitor, Vasileios Papapostolou, Joy E Lawrence, David M Garner, Brigham S Perry, Jack R Harkema, John J Godleski
BACKGROUND: Epidemiological studies have linked exposures to ambient fine particulate matter (PM2.5) and traffic with autonomic nervous system imbalance (ANS) and cardiac pathophysiology, especially in individuals with preexisting disease. It is unclear whether metabolic syndrome (MetS) increases susceptibility to the effects of PM2.5. We hypothesized that exposure to traffic-derived primary and secondary organic aerosols (P + SOA) at ambient levels would cause autonomic and cardiovascular dysfunction in rats exhibiting features of MetS...
May 25, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28545208/spatio-temporal-analysis-of-particulate-matter-intake-fractions-for-vehicular-emissions-hourly-variation-by-micro-environments-in-the-greater-toronto-and-hamilton-area-canada
#17
Weeberb J Requia, Matthew D Adams, Altaf Arain, Petros Koutrakis, Wan-Chen Lee, Mark Ferguson
Previous investigations have reported intake fraction (iF) for different environments, which include ambient concentrations (outdoor exposure) and microenvironments (indoor exposure). However, little is known about iF variations due to space-time factors, especially in microenvironments. In this paper, we performed a spatio-temporal analysis of particulate matter (PM2.5) intake fractions for vehicular emissions. Specifically, we investigated hourly variation (12:00am-11:00pm) by micro-environments (residences and workplaces) in the Greater Toronto and Hamilton Area (GTHA), Canada...
May 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28544997/exposure-to-ultrafine-particles-in-different-transport-modes-in-the-city-of-rome
#18
Mario Grana, Nicola Toschi, Laura Vicentini, Antonio Pietroiusti, Andrea Magrini
There is evidence of adverse health impacts from human exposure to particulate air pollution, including increased rates of respiratory and cardiovascular illness, hospitalizations, and pre-mature mortality. Most recent hypotheses assign an important role to ultrafine particles (UFP) (<0.1 μm) and to associated transition metals (in particular Fe). In a large city like Rome, where many active people spend more than one hour per day in private or public transportation, it may be important to evaluate the level of exposure to harmful pollutants which occurs during urban travelling...
May 22, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28544250/prevalence-of-and-risk-factors-for-intraoperative-gastroesophageal-reflux-and-postanesthetic-vomiting-and-diarrhea-in-dogs-undergoing-general-anesthesia
#19
Carlos Torrente, Isabel Vigueras, Edgar G Manzanilla, Cecilia Villaverde, Laura Fresno, Bibiana Carvajal, Marina Fiñana, Cristina Costa-Farré
OBJECTIVE: To determine the prevalence of intraoperative gastroesophageal reflux (GER) and postanesthetic vomiting and diarrhea, and to evaluate risk factors associated with these gastrointestinal disorders (GID) in dogs undergoing general anesthesia. DESIGN: Prospective observational study. SETTING: University teaching hospital. ANIMALS: Two hundred thirty-seven client-owned dogs undergoing general inhalant anesthesia for diagnostic or surgical purposes...
May 23, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28543931/severe-asthma-in-children
#20
REVIEW
Andrew Bush, Louise Fleming, Sejal Saglani
Most children with asthma have their disease easily controlled if low-dose inhaled corticosteroids (ICSs) are regularly and correctly administered. If a child presents with asthma which is apparently resistant to therapy with high-dose ICS and other controllers, then they have problematic severe asthma. However, in light of the UK National Review of Asthma Deaths, definitions of severe asthma based solely on the levels of prescribed treatment are too narrow. A detailed assessment of all such children should be performed...
May 25, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
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