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https://www.readbyqxmd.com/read/27905542/defining-an-olfactory-receptor-function-in-airway-smooth-muscle-cells
#1
William H Aisenberg, Jessie Huang, Wanqu Zhu, Premraj Rajkumar, Randy Cruz, Lakshmi Santhanam, Niranjana Natarajan, Hwan Mee Yong, Breann De Santiago, Jung Jin Oh, A-Rum Yoon, Reynold A Panettieri, Oliver Homann, John K Sullivan, Stephen B Liggett, Jennifer L Pluznick, Steven S An
Pathways that control, or can be exploited to alter, the increase in airway smooth muscle (ASM) mass and cellular remodeling that occur in asthma are not well defined. Here we report the expression of odorant receptors (ORs) belonging to the superfamily of G-protein coupled receptors (GPCRs), as well as the canonical olfaction machinery (Golf and AC3) in the smooth muscle of human bronchi. In primary cultures of isolated human ASM, we identified mRNA expression for multiple ORs. Strikingly, OR51E2 was the most highly enriched OR transcript mapped to the human olfactome in lung-resident cells...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27903737/allergen-induced-cd4-t-cell-cytokine-production-within-airway-mucosal-dendritic-cell-t-cell-clusters-drives-the-local-recruitment-of-myeloid-effector-cells
#2
Tibor Z Veres, Tamás Kopcsányi, Nicholas van Panhuys, Michael Y Gerner, Zhiduo Liu, Pia Rantakari, Johannes Dunkel, Masayuki Miyasaka, Marko Salmi, Sirpa Jalkanen, Ronald N Germain
Allergic asthma develops in the mucosal tissue of small bronchi. At these sites, local cytokine production by Th2/Th17 cells is believed to be critical for the development of tissue eosinophilia/neutrophilia. Using the mouse trachea as a relevant model of human small airways, we performed advanced in vivo dynamic and in situ static imaging to visualize individual cytokine-producing T cells in the airway mucosa and to define their immediate cellular environment. Upon allergen sensitization, newly recruited CD4(+) T cells formed discrete Ag-driven clusters with dendritic cells (DCs)...
November 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27888824/clinico-radiological-parameters-predicting-early-diagnosis-of-foreign-body-aspiration-in-children
#3
Pradipta Kumar Parida, Nirmal Shanmugasundaram, Surianarayanan Gopalakrishnan
OBJECTIVES: This study aims to investigate clinical and radiological findings to make early diagnosis of foreign body (FB) aspiration in children. PATIENTS AND METHODS: This prospective study was conducted on 45 children younger than 12 years with a clinical diagnosis of FB aspiration undergone rigid bronchoscopy between September 2010 and May 2014. The results of 37 children (22 males, 15 females; mean age 2.6 years; range 1 to 12 years) with positive for FB on bronchoscopy were analyzed...
September 2016: Kulak Burun Boğaz Ihtisas Dergisi: KBB, Journal of Ear, Nose, and Throat
https://www.readbyqxmd.com/read/27886803/relapsing-polychondritis-a-2016-update-on-clinical-features-diagnostic-tools-treatment-and-biological-drug-use
#4
REVIEW
Alexis Mathian, Makoto Miyara, Fleur Cohen-Aubart, Julien Haroche, Miguel Hie, Micheline Pha, Philippe Grenier, Zahir Amoura
Relapsing polychondritis (RP) is a very rare autoimmune disease characterised by a relapsing inflammation of the cartilaginous tissues (joints, ears, nose, intervertebral discs, larynx, trachea and cartilaginous bronchi), which may progress to long-lasting atrophy and/or deformity of the cartilages. Non-cartilaginous tissues may also be affected, such as the eyes, heart, aorta, inner ear and skin. RP has a long and unpredictable course. Because no randomised therapeutic trials are available, the treatment of RP remains mainly empirical...
April 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27876259/a-diagnostic-dilemma-for-the-pediatrician-radiolucent-tracheobronchial-foreign-body
#5
Hakan Taşkınlar, Gökhan Berktuğ Bahadır, Cankat Erdoğan, Doğakan Yiğit, Dinçer Avlan, Ali Naycı
BACKGROUND: The purpose of this study is to determine the role of clinical history, physical examinations, and radiological findings in the evaluation of patients with suspected radiolucent foreign body aspiration. METHODS: The medical records of 236 children (under the age of 18 years), on whom a rigid bronchoscopy was performed between 1999 and 2015 because of suspected radiolucent foreign body aspiration, were analyzed retrospectively. Sensitivity, specificity, positive and negative predictive values of clinical history, physical examinations, and radiological findings were evaluated...
October 28, 2016: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/27867576/resection-with-preserved-histologic-morphology-of-a-rare-tumour-via-bronchoscopic-cryosurgery
#6
Jessica Han Ying Tan, Angela Maria Takano, Anne Ann Ling Hsu
Tracheobronchial leiomyoma is a rare pulmonary neoplasm accounting for <2% of benign tumours of the lower airway. Published case series reported bronchoscopic resectability with laser ablation for lesions located in the large airway. Surgery was performed for tumours with wide-based and tumours located in segmental bronchus or lung parenchyma. This is the first reported case of complete bronchoscopic cryoresection of leiomyoma arising from the subsegmental bronchi and illustrating the cryopreservation of its histologic morphology...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27867548/detection-of-salivary-aspiration-using-radionuclide-salivagram-spect-ct-in-patients-with-copd-exacerbation-a-preliminary-study
#7
Peng Hou, Huaifu Deng, Zhida Wu, Haiping Liu, Ni Liu, Zeguang Zheng, Ping Chen
BACKGROUND: The aim of this prospective study was to assess the utility of radionuclide salivagram for detecting salivary aspiration in AECOPD patients and to evaluate the adding value of SPECT/CT to planar imaging. METHODS: 52 consecutive AECOPD patients underwent radionuclide salivagram SPECT/CT and water swallow test between April 2012 and March 2014. All images were interpreted independently by two experienced nuclear medicine physicians. Final diagnosis was made by consensus of two readers...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27863670/selection-and-fabrication-of-a-non-woven-polycarbonate-urethane-cover-for-a-tissue-engineered-airway-stent
#8
Weiluan Chen, Johanna Clauser, Anja Lena Thiebes, Donnacha J McGrath, Peter E McHugh, Ulrich Steinseifer, Stefan Jockenhoevel, Wim E Hennink, Robbert Jan Kok
One of the major problems in end-stage bronchotracheal cancer is stenosis of the upper airways, either due to luminal ingrowth of the tumor or mucus plugging. Airway stents that suppress tumor ingrowth and sustain mucociliary transport can alleviate these problems in end-stage bronchial cancer. We evaluated different types of polymeric covers for a tissue engineered airway stent. The distinguishing feature of this stent concept is that respiratory epithelial cells can grow on the luminal surface of the stent which facilitates mucociliary clearance...
November 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27858910/image-quality-of-mixed-convolution-kernel-in-thoracic-computed-tomography
#9
Jakob Neubauer, Eva Maria Spira, Juliane Strube, Mathias Langer, Christian Voss, Elmar Kotter
The mixed convolution kernel alters his properties geographically according to the depicted organ structure, especially for the lung. Therefore, we compared the image quality of the mixed convolution kernel to standard soft and hard kernel reconstructions for different organ structures in thoracic computed tomography (CT) images.Our Ethics Committee approved this prospective study. In total, 31 patients who underwent contrast-enhanced thoracic CT studies were included after informed consent. Axial reconstructions were performed with hard, soft, and mixed convolution kernel...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27848134/fine-and-ultrafine-particle-doses-in-the-respiratory-tract-from-digital-printing-operations
#10
Aristeidis Voliotis, Irene Karali, Athanasios Kouras, Constantini Samara
In this study, we report for the first time particle number doses in different parts of the human respiratory tract and real-time deposition rates for particles in the 10 nm to 10 μm size range emitted by digital printing operations. Particle number concentrations (PNCs) and size distribution were measured in a typical small-sized printing house using a NanoScan scanning mobility particle sizer and an optical particle sizer. Particle doses in human lung were estimated applying a multiple-path particle dosimetry model under two different breathing scenarios...
November 16, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27847093/robotic-lobectomy-utilizing-the-robotic-stapler
#11
Daryl Phillip Pearlstein
A drawback of robotic lobectomy is the inability of the operating surgeon to perform stapler division of the pulmonary vessels and bronchi. With the advent of the robotic stapler, the surgeon is able to control this instrument from the console. The robotic stapler presents certain challenges. This article outlines techniques to use the robotic stapler for the safe and predictable performance of lobectomies.
December 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27842540/the-impact-of-low-frequency-low-force-cyclic-stretching-of-human-bronchi-on-airway-responsiveness
#12
Morgan Le Guen, Stanislas Grassin-Delyle, Emmanuel Naline, Amparo Buenestado, Marion Brollo, Elisabeth Longchampt, Philippe Kleinmann, Philippe Devillier, Christophe Faisy
BACKGROUND: In vivo, the airways are constantly subjected to oscillatory strain (due to tidal breathing during spontaneous respiration) and (in the event of mechanical ventilation) positive pressure. This exposure is especially problematic for the cartilage-free bronchial tree. The effects of cyclic stretching (other than high-force stretching) have not been extensively characterized. Hence, the objective of the present study was to investigate the functional and transcriptional response of human bronchi to repetitive mechanical stress caused by low-frequency, low-force cyclic stretching...
November 14, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27833903/virtual-3d-modeling-of-airways-in-congenital-heart-defects
#13
Simone Speggiorin, Saravanan Durairaj, Branko Mimic, Antonio F Corno
The involvement of the airway is not uncommon in the presence of complex cardiovascular malformations. In these cases, a careful inspection of the relationship between the airway and the vasculature is paramount to plan the surgical procedure. Three-dimensional printing enhanced the visualization of the cardiovascular structure. Unfortunately, IT does not allow to remove selected anatomy to improve the visualization of the surrounding ones. Computerized modeling has the potential to fill this gap by allowing a dynamic handling of different anatomies, increasing the exposure of vessels or bronchi to show their relationship...
2016: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/27827953/blocking-trpa1-in-respiratory-disorders-does-it-hold-a-promise
#14
REVIEW
Indranil Mukhopadhyay, Abhay Kulkarni, Neelima Khairatkar-Joshi
Transient Receptor Potential Ankyrin 1 (TRPA1) ion channel is expressed abundantly on the C fibers that innervate almost entire respiratory tract starting from oral cavity and oropharynx, conducting airways in the trachea, bronchi, terminal bronchioles, respiratory bronchioles and upto alveolar ducts and alveoli. Functional presence of TRPA1 on non-neuronal cells got recognized recently. TRPA1 plays a well-recognized role of "chemosensor", detecting presence of exogenous irritants and endogenous pro-inflammatory mediators that are implicated in airway inflammation and sensory symptoms like chronic cough, asthma, chronic obstructive pulmonary disease (COPD), allergic rhinitis and cystic fibrosis...
November 5, 2016: Pharmaceuticals
https://www.readbyqxmd.com/read/27820964/long-term-antibiotic-treatment-for-non-cystic-fibrosis-bronchiectasis-in-adults-evidence-current-practice-and-future-use
#15
N Goldman, M R Loebinger, R Wilson
Bronchiectasis is defined pathologically by the permanent dilation of the bronchi and bronchioles and chronic airway inflammation. This is the outcome of a number of different aetiologies but up to half of bronchiectasis cases are labelled idiopathic. It is characterised by a chronic productive cough, haemoptysis, shortness of breath and recurrent infective exacerbations. Long-term antibiotics are used with the aim of reducing symptom severity and exacerbation frequency, improving quality of life and preventing disease progression...
December 2016: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/27814419/mucous-membrane-pemphigoid-involving-the-trachea-and-bronchi-an-extremely-rare-and-life-threatening-presentation
#16
Elizabeth Wilder, Martin P Fernandez, Jennifer Krejci-Manwaring
No abstract text is available yet for this article.
September 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27811492/massive-subcutaneous-emphysema-and-bilateral-tension-pneumothoraces-after-supplemental-oxygen-delivery-via-an-airway-exchange-catheter
#17
Abraham H Hulst, Hans J Avis, Markus W Hollmann, Markus F Stevens
A patient suffered massive subcutaneous emphysema and bilateral tension pneumothoraces after receiving supplemental oxygen through an airway exchange catheter (AEC). Complications of AEC placement include misplacement, direct injury to the larynx, bronchi or lung, barotrauma related to oxygen supplementation, and a loss of airway. We review these complications and discuss the specific risks of supplementing oxygen using an AEC. We suggest measures to limit pressure from the oxygen source and warn against advancing an AEC too far into the tracheobronchial tree...
November 2, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27803413/multiple-tracheobronchial-polyposis-caused-by-tracheobronchopathia-osteochondroplastica
#18
Keigo Uchimura, Kei Yamasaki, Kazuhiro Yatera, Aya Nawata, Hiroshi Ishimoto, Hiroshi Mukae
Tracheobronchopathia osteochondroplastica (TO) is a rare benign airway disease that is characterized by the presence of multiple rock-garden-like nodules on bronchoscopy. TO is a slowly progressive disease of the trachea and major bronchi, which is typically characterized by such symptoms as a persistent nonproductive cough, dyspnea and wheezing. The clinical features of TO are variable, and asymptomatic patients may incidentally be diagnosed during the work-up for other diseases. We herein report a rare case of TO accompanying multiple tracheobronchial polyposis in which bronchoscopic resection of the airway polyp using a high-frequency snare was successfully performed...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27800495/first-observation-of-leptospira-interrogans-in-the-lungs-of-rattus-norvegicus
#19
Anne-Laure Zilber, Patrick Belli, Marc Artois, Angeli Kodjo, Zoheira Djelouadji
We report the first two cases of pulmonary presence of leptospires in apparently healthy rats captured in a city park in Lyon (France). Only renal carriage of Leptospira has been described in the literature. Blood serology was performed in parallel with molecular and histological analyses of the kidney and lung samples. We isolated leptospires from the kidneys of two out of three seropositive wild rats. These results were confirmed by specific detection of pathogenic Leptospira by real-time PCR. Moreover, Leptospira DNA was detected in lung tissues...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27799071/evaluation-of-coldzyme%C3%A2-mouth-spray-on-prevention-of-upper-respiratory-tract-infections-in-a-boy-with-primary-immunodeficiency-a-case-report
#20
Mats Clarsund, Ulf Blom, Ann Gardulf
BACKGROUND: Primary immunodeficiencies include a variety of disorders that render patients more susceptible to infections. If left untreated, these infections may be fatal. Patients with primary antibody deficiencies are therefore given prophylactic immunoglobulin G replacement therapy. ColdZyme® Mouth Spray is a medical device intended to reduce the probability of catching a cold and/or can help shorten the duration of a cold, if used at an early stage of the infection, by forming a thin protective barrier on the pharyngeal mucous membrane...
October 31, 2016: Journal of Medical Case Reports
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