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https://www.readbyqxmd.com/read/28107509/development-of-combining-of-human-bronchial-mucosa-models-with-xposeali%C3%A2-for-exposure-of-air-pollution-nanoparticles
#1
Jie Ji, Anna Hedelin, Maria Malmlöf, Vadim Kessler, Gulaim Seisenbaeva, Per Gerde, Lena Palmberg
BACKGROUND: Exposure to agents via inhalation is of great concerns both in workplace environment and in the daily contact with particles in the ambient air. Reliable human airway exposure systems will most likely replace animal experiment in future toxicity assessment studies of inhaled agents. METHODS: In this study, we successfully established a combination of an exposure system (XposeALI) with 3D models mimicking both healthy and chronic bronchitis-like mucosa by co-culturing human primary bronchial epithelial cells (PBEC) and fibroblast at air-liquid interface (ALI)...
2017: PloS One
https://www.readbyqxmd.com/read/28101344/evaluation-of-pharmacological-relaxation-effect-of-the-natural-product-naringin-on-in-vitro-cultured-airway-smooth-muscle-cells-and-in-vivo-ovalbumin-induced-asthma-balb-c-mice
#2
Yue Wang, Yun Lu, Mingzhi Luo, Xiaohao Shi, Yan Pan, Huilong Zeng, Linhong Deng
Asthma has become a common chronic respiratory disease worldwide and its prevalence is predicted to continue increasing in the next decade, particularly in developing countries. A key component in asthma therapy is to alleviate the excessive bronchial airway narrowing ultimately due to airway smooth muscle contraction, which is often facilitated by a smooth muscle relaxant, such as the β2-adrenergic agonists. Recently, bitter taste receptor (TAS2R) agonists, including saccharin and chloroquine, have been found to potently relax the airway smooth muscle cells (ASMCs) via intracellular Ca(2+) signaling...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28100244/is-aclidinium-alone-or-combined-with-a-laba-a-rational-choice-for-symptomatic-copd-patients
#3
REVIEW
F Blasi, G W Canonica, M Miravitlles
BACKGROUND: As emphasized by international recommendations and largely confirmed by clinical experience, long-acting bronchodilators play a central role in the maintenance treatment of chronic obstructive pulmonary disease (COPD) due to their proven efficacy in reducing airflow obstruction and improving symptoms. MAIN BODY: There are some important aspects to define with regard to inhalation therapy for COPD, particularly those concerning the selection criteria and the optimal use of long-acting bronchodilators...
January 18, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28097040/effects-of-inhalable-microparticles-of-seonpyejeongcheon-tang-in-an-asthma-mouse-model-effects-of-microparticles-of-sjt
#4
Won-Kyung Yang, Chul-Hwa Lee, Min-Hee Kim, Seung-Hyeong Kim, Hae-Yoon Choi, Yoon Yeo, Yang-Chun Park
OBJECTIVES: Allergic asthma generally presents with symptoms of wheezing, coughing, breathlessness, and airway inflammation. Seonpyejeongcheon-tang (SJT) consists of 12 herbs. It originated from Jeongcheon-tang (JT), also known as Ding-chuan-tang, composed of 7 herbs, in She-sheng-zhong-miao-fang. This study aimed to evaluate the effects of local delivery of SJT via inhalable microparticles in an asthma mouse model. METHODS: Microparticles containing SJT were produced by spray-drying with leucine as an excipient...
December 2016: Journal of Pharmacopuncture
https://www.readbyqxmd.com/read/28094480/anesthetic-complications-during-general-anesthesia-without-intravenous-access-in-pediatric-ophthalmologic-clinic-assessment-of-5216-cases
#5
Chun W Hung, Lauren Licina, David H Abramson, Vittoria Arslan-Carlon
BACKGROUNDː General anesthesia utilizing inhalational agents without intravenous (IV) access for minor procedures is controversial1. Eliminating IV access increases efficiency and patient satisfaction; however, the ability to introduce rapid acting medications into the circulation during an unanticipated emergency becomes challenging. The objective of this study was to examine complication risk following pediatric ophthalmologic examinations under anesthesia (EUA) without IV placement. METHODSː A retrospective review of consecutive pediatric patients who underwent EUA for retinoblastoma management was performed from 2004 to 2014...
January 17, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28091866/review-of-diagnostic-challenges-in-occupational-asthma
#6
REVIEW
Jacques A Pralong, Andre Cartier
PURPOSE OF REVIEW: Occupational asthma (OA) is one of the most frequent occupational diseases and its diagnosis is often difficult. This review summarizes its current diagnostic challenges. RECENT FINDINGS: OA is associated with significant health and socio-economic burden. It is underdiagnosed and physicians need to adopt a stepwise approach to confirm the diagnosis. Although early removal from exposure to the offending agent is associated with a better prognosis, physicians should try to confirm the diagnosis of work-related asthma before taking a worker off work...
January 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28088520/palmitic-acid-increases-invasiveness-of-pancreatic-cancer-cells-aspc-1-through-tlr4-ros-nf-%C3%AE%C2%BAb-mmp-9-signaling-pathway
#7
Makena J Binker-Cosen, Daniel Richards, Brenda Oliver, Herbert Y Gaisano, Marcelo G Binker, Laura I Cosen-Binker
Pancreatic cancer (PC) is an aggressive malady with proclivity for early metastasis. Overexpression of toll-like receptor 4 (TLR4) in pancreatic ductal adenocarcinoma, the most common type of pancreatic malignancy, correlates to tumor size, lymph node involvement, venous invasion and pathological stage. Lipopolysaccharides (LPS) are natural TLR4 ligands that have been shown to increase the invasive ability of PC cells. However, rapid inactivation of circulating LPS and low systemic absorption of inhaled LPS from the bronchoalveolar compartment make other agonists such as saturated fatty acids more suitable to be considered for TLR4-related cell invasiveness...
January 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28087784/interactions-between-zinc-and-allosteric-modulators-of-the-glycine-receptor
#8
Garrett L Cornelison, Anna W Daszkowski, Natasha C Pflanz, S John Mihic
The glycine receptor is a pentameric ligand-gated ion channel involved in fast inhibitory neurotransmission in the central nervous system. Zinc is an allosteric modulator of glycine receptor function, enhancing the effects of glycine at nM to low μM concentrations, and inhibiting its effects at higher concentrations. Low nM concentrations of contaminating zinc in electrophysiological buffers are capable of synergistically enhancing receptor modulation by other compounds such as ethanol. This suggests that, unless accounted for, previous studies of glycine receptor modulation were measuring the effects of modulator plus co-modulation by zinc on receptor function...
January 13, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28076656/combined-inhaled-beta-agonist-and-anticholinergic-agents-for-emergency-management-in-adults-with-asthma
#9
REVIEW
Scott W Kirkland, Christine Vandenberghe, Britt Voaklander, Taylor Nikel, Sandra Campbell, Brian H Rowe
BACKGROUND: Inhaled short-acting anticholinergics (SAAC) and short-acting beta₂-agonists (SABA) are effective therapies for adult patients with acute asthma who present to the emergency department (ED). It is unclear, however, whether the combination of SAAC and SABA treatment is more effective in reducing hospitalisations compared to treatment with SABA alone. OBJECTIVES: To conduct an up-to-date systematic search and meta-analysis on the effectiveness of combined inhaled therapy (SAAC + SABA agents) vs...
January 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28070335/prevalence-and-diversity-of-chlamydiales-and-other-amoeba-resisting-bacteria-in-domestic-drinking-water-systems
#10
J Lienard, A Croxatto, A Gervaix, Y Lévi, J-F Loret, K M Posfay-Barbe, G Greub
A growing number of human infections incriminate environmental bacteria that have evolved virulent mechanisms to resist amoebae and use them as a replicative niche. These bacteria are designated amoeba-resisting bacteria (ARB). Despite the isolation of these ARB in various human clinical samples, the possible source of infection remains undetermined in most cases. However, it is known that the ARB Legionella pneumophila, for instance, causes a respiratory infection in susceptible hosts after inhalation of contaminated water aerosols from various sources...
January 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28046446/su-c-202-06-design-and-development-of-a-non-rigid-phantom-ventilating-air-quantitatively-evaluating-ct-based-pulmonary-ventilation-imaging
#11
S Miyakawa, H Tachibana, S Moriya, T Kurosawa, M Sato
PURPOSE: A validation study using human or sheep for CT pulmonary ventilation (CT-V) imaging are inefficient and partially unstable. In this study, we designed and developed non-rigid phantom ventilating air to quantitatively evaluate the CT-V image. METHODS: The phantom consisted of an acryl cylinder filled with polyurethane foam designed to pulmonic alveoli and a polyurethane membrane was attached to the inferior end of the phantom to simulate a lung diaphragm...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046370/th-cd-202-09-free-breathing-proton-mri-functional-lung-avoidance-maps-to-guide-radiation-therapy
#12
D Capaldi, K Sheikh, D Hoover, B Yaremko, D Palma, G Parraga
PURPOSE: Pulmonary functional MRI using inhaled gas contrast agents was previously investigated as a way to identify well-functioning lung in patients with NSCLC who are clinical candidates for radiotherapy. Hyperpolarized noble-gas ((3) He and (129) Xe) MRI has also been optimized to measure functional lung information, but for a number of reasons, the clinical translation of this approach to guide radiotherapy planning has been limited. As an alternative, free-breathing pulmonary 1H MRI using clinically available MRI systems and pulse sequences provides a non-contrast-enhanced method to generate both ventilation and perfusion maps...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044257/targeted-therapy-for-severe-asthma-identifying-the-right-patients
#13
Kathy Low, Philip G Bardin
Asthma affects over 300 million people worldwide. Most asthmatics are well controlled with inhaled corticosteroids and long-acting beta-agonists; however, a proportion of patients are unresponsive and attain limited disease control. This group represents a considerable healthcare and financial burden, particularly patients who experience frequent exacerbations and require hospital admission. Development of new biological agents and disease biomarkers has provided novel avenues for treatment. These treatments have been highly successful, reducing exacerbations and yielding modest improvements in quality of life and lung function...
January 2, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28043636/evaluation-the-virulence-of-mycobacterium-bovis-isolated-from-milk-samples-through-histopathological-study-in-laboratory-animals
#14
I M Al-Saqur, A N Al-Thwani, I M Al-Attar, M S Al-Mashhadani
INTRODUCTION: Mycobacterium bovis has a broad host range, and it is the principal agent responsible for tuberculosis (TB) in bovine, domestic and wild mammals. M. bovis also infects human, causing zoonotic TB through ingestion, inhalation and, less frequently by contact with mucous membranes and broken skin. Zoonotic TB was formerly an endemic disease, usually transmitted to man by consumption of raw cow's milk. It is indistinguishable clinically or pathologically from TB caused by M...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28039410/effects-of-novel-muscarinic-m3-receptor-ligand-c1213-in-pulmonary-arterial-hypertension-models
#15
Mohamed Ahmed, Sonya VanPatten, Satyan Lakshminrusimha, Hardik Patel, Thomas R Coleman, Yousef Al-Abed
Pulmonary hypertension (PH) is a complex disease comprising a pathologic remodeling and thickening of the pulmonary vessels causing an after load on the right heart ventricle that can result in ventricular failure. Triggered by oxidative stress, episodes of hypoxia, and other undetermined causes, PH is associated with poor outcomes and a high rate of morbidity. In the neonate, this disease has a similar etiology but is further complicated by the transition to breathing after birth, which requires a reduction in vascular resistance...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28028789/isoflurane-use-in-the-treatment-of-super-refractory-status-epilepticus-is-associated-with-hippocampal-changes-on-mri
#16
Kristin M Ikeda, Robert Connors, Donald H Lee, Alexander G Khandji, Jan Claassen, G Bryan Young
BACKGROUND: Refractory status epilepticus (RSE) is associated with high morbidity and mortality. Experts recommend aggressive management with continuous intravenous infusions or inhaled anesthetics such as isoflurane. However, there is concern that MRI changes in RSE reflect isoflurane neurotoxicity. We performed a case-control study to determine whether isoflurane is neurotoxic, based on MRI signal changes. METHODS: We performed a retrospective case-control study of the incidence of MRI changes in RSE treated with and without isoflurane...
December 27, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/28027882/acute-mercury-vapor-poisoning-in-a-3-month-old-infant-a-case-report
#17
Zhenyan Gao, Xiaolan Ying, Jin Yan, Ju Wang, Shizhong Cai, Chonghuai Yan
BACKGROUND: We investigated the clinical characteristics of a 3-month-old infant with acute mercury vapor poisoning. Clinical symptoms of acute mercury poisoning in infants include acute onset, rapid progression, severe illness with respiratory symptoms that may result in pneumothoraces and aspiration pneumonias. CASE PRESENTATION: A 3-month-old girl presented with pneumothoraces and respiratory failure to the hospital. Two days before hospitalization, the girl had stayed in a room containing mercury vapor for several hours...
December 24, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28024128/-pathogenesis-diagnosis-and-treatment-of-chronic-obstructive-pulmonary-disease-in-the-light-of-new-research
#18
EDITORIAL
Tadeusz Płusa
Accurate number of patients with chronic obtructive pulmonary disease (COPD) is difficult to determine, both in Poland and in the world. Quoted estimates and fragmented with the research indicate that approx. 10% of the world's population may be burdened by this disease. As it turns out, COPD is recognized in 25-45% in non-smokers, suggesting a genetic link. This is confirmed by new data that indicates that further embodiments having genetic polymorphisms associated with the occurrence of the disease. It was further found that the allele GC-1F vitamin D were risk factor for development of COPD...
December 22, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28024103/multiple-reaction-monitoring-for-multiplex-detection-of-three-bacterial-toxins-using-liquid-chromatography-tandem-mass-spectrometry
#19
Syed Imteyaz Alam, Annu Uppal, Pallavi Gupta, Dev Vrat Kamboj
Clostridium perfringens epsilon toxin (ETX), staphylococcal enterotoxin B (SEB), and shiga toxin (STX) are implicated in a number of diseases and food-borne intoxications and are considered as potential agents for bioterrorism and warfare. Artificially generated aerosol is the likely mode of delivery of these toxins for nefarious uses; potentially capable of causing mass destruction to human and animal health by inhalation of toxic bioaerosol. Multiplex and unambiguous detection of these agents is of paramount importance for emergency response in a biothreat scenario and for food safety...
December 26, 2016: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28012426/perceived-safety-and-efficacy-of-neuromuscular-blockers-for-acute-respiratory-distress-syndrome-among-medical-intensive-care-unit-practitioners-a-multicenter-survey
#20
Heather Torbic, Seth R Bauer, Heather A Personett, Amy L Dzierba, Joanna L Stollings, Lindsay P Ryder, Craig E Daniels, Sean M Caples, Erin N Frazee
PURPOSE: Neuromuscular blocking agents (NMBAs) are frequently used in patients with acute respiratory distress syndrome (ARDS). The purpose of this survey is to describe providers' knowledge and perceived efficacy and safety of NMBAs in patients with ARDS. MATERIALS AND METHODS: We performed a prospective, multicenter survey of medical intensive care unit intensivists, fellows, nurse practitioners (NPs), physician's assistants (PAs), and pharmacists at 5 tertiary care centers between July 2012 and May 2013...
December 7, 2016: Journal of Critical Care
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