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https://www.readbyqxmd.com/read/28747217/persistence-of-candida-dubliniensis-and-lung-function-in-patients-with-cystic-fibrosis
#1
Atqah AbdulWahab, Husam Salah, Prem Chandra, Saad J Taj-Aldeen
OBJECTIVES: Candida dubliniensis is an emerging yeast and demonstrated a high adherence property to cystic fibrosis respiratory tract. Therefore, it is important to determine the persistence of C. dubliniensis and to assess the possible relationship to the body mass index (BMI) and forced expiratory volume in 1st second (FEV1). RESULTS: Candida isolates were identified by MALDI-TOF MS to species level from 40/52 (76.9%) cystic fibrosis patients. C. dubliniensis was the most common organism isolated from 50/77 (65%) lower respiratory specimens of 29 patients...
July 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28741371/dexamethasone-ameliorates-h2s-induced-acute-lung-injury-by-increasing-claudin-5-expression-via-the-pi3k-pathway
#2
P Geng, T Ma, J Xing, L Jiang, H Sun, B Zhu, H Zhang, H Xiao, J Wang, J Zhang
Acute lung injury (ALI) is a major outcome of exposure to high levels of hydrogen sulfide (H2S). Dexamethasone (DXM) has been used to treat ALI. However, the mechanisms involved in H2S-induced ALI and the protective mechanisms of DXM in treating ALI are still nebulous. To explore the mechanisms involved, we evaluated the role of claudin-5 in the protective effect of DXM against H2S-induced ALI. Sprague-Dawley rats were exposed to H2S to establish the ALI model. In parallel with the animal model, a cell model was also established by incubating human umbilical vein endothelial cells (HUVECs) with NaHS...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28741229/inhaled-antimicrobials-for-ventilator-associated-pneumonia-practical-aspects
#3
Garyphallia Poulakou, Dimitrios K Matthaiou, David P Nicolau, Georgios Siakallis, George Dimopoulos
Positive experience with inhaled antibiotics in pulmonary infections of patients with cystic fibrosis has paved the way for their utilization in mechanically ventilated, critically ill patients with lower respiratory tract infections. A successful antibiotic delivery depends upon the size of the generated particle and the elimination of drug impaction in the large airways and the ventilator circuit. Generated droplet size is mainly affected by the type of the nebulizer employed. Currently, jet, ultrasonic, and vibrating mesh nebulizers are marketed; the latter can deliver optimal antibiotic particle size...
July 24, 2017: Drugs
https://www.readbyqxmd.com/read/28738709/nebulized-hypertonic-saline-to-prevent-ventilator-associated-pneumonia-in-premature-infants-a-randomized-trial
#4
Zahra Ezzeldin, Yasmeen Mansi, Mervat Gaber, Rania Zakaria, Rehab Fawzy, Mohamed A Mohamed
BACKGROUND/OBJECTIVES: Ventilator associated pneumonia (VAP) is a leading cause of death. Nebulized hypertonic saline solution (HSS) has been used to improve pulmonary clearance and reduce infection in intubated patients. This study examines whether nebulized HSS may reduce VAP in intubated premature infants. METHODS: We analyzed results of 100 intubated premature infants who completed the study. Infants were divided into the "Control" group where VAP prevention protocol was implemented and the "Intervention" group where nebulized HSS twice daily was added to the package of care...
July 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28737431/the-analysis-of-pneumatic-atomization-of-newtonian-and-non-newtonian-fluids-for-different-medical-nebulizers
#5
Marek Ochowiak, Magdalena Matuszak, Sylwia Włodarczak
OBJECTIVE: The paper contains results of the experimental studies on atomization process of inhaled drugs and aqueous solutions of glycerol with aqueous solutions of glycerol-polyacrylamide (Rokrysol WF1) in pneumatic nebulizers. In experiments the different concentration of aqueous solutions of glycerol-polyacrylamide have been tested. In addition, the effect of nebulizer design on atomization process has been determined. The one of the main elements of medical pneumatic nebulizer is nebulizer cup...
July 24, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28735728/artemisia-argyi-attenuates-airway-inflammation-in-ovalbumin-induced-asthmatic-animals
#6
Na-Rae Shin, Hyung-Won Ryu, Je-Won Ko, Sung-Hyeuk Park, Heung-Joo Yuk, Ha-Jung Kim, Jong-Choon Kim, Seong-Hun Jeong, In-Sik Shin
ETHNOPHARMACOLOGICAL RELEVANCE: Artemisia argyi is a traditional herbal medicine in Korea and commonly called as mugwort. It is traditionally used as food source and tea to control abdominal pain, dysmenorrhoea, uterine haemorrhage, and inflammation. AIM OF THE STUDY: We investigated the effects of A. argyi (TOTAL) and dehydromatricarin A (DA), its active component on ovalbumin (OVA)-induced allergic asthma. MATERIALS AND METHODS: The animals were sensitized on day 0 and 14 by intraperitoneal injection of OVA with aluminum hydroxide...
July 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28735415/cfd-simulation-of-aerosol-delivery-to-a-human-lung-via-surface-acoustic-wave-nebulization
#7
Morteza Yousefi, Oveis Pourmehran, Mofid Gorji-Bandpy, Kiao Inthavong, Leslie Yeo, Jiyuan Tu
Administration of drug in the form of particles through inhalation is generally preferable in the treatment of respiratory disorders. Conventional inhalation therapy devices such as inhalers and nebulizers, nevertheless, suffer from low delivery efficiencies, wherein only a small fraction of the inhaled drug reaches the lower respiratory tract. This is primarily because these devices are not able to produce a sufficiently fine drug mist that has aerodynamic diameters on the order of a few microns. This study employs computational fluid dynamics to investigate the transport and deposition of the drug particles produced by a new aerosolization technique driven by surface acoustic waves (SAWs) into an in silico lung model geometrically reconstructed using computed tomography scanning...
July 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28730936/an-industry-update-what-is-the-latest-news-in-therapeutic-delivery
#8
Iain Simpson
This Industry Update covers the period from 1 through 30 April 2017, and is based on information sourced from company press releases, scientific literature, patents and various news websites. Biogen expanded its portfolio of developmental drugs targeting neurological diseases by licensing a drug from Bristol-Myers Squibb which is currently under investigation for the treatment of progressive supranuclear palsy. Takeda announced a deal with NuBiyota focused on developing treatments for gastrointestinal disorders, based on the manipulation of microbes living in the gut...
July 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28729041/pharmacological-preclinical-characterization-of-las190792-a-novel-inhaled-bifunctional-muscarinic-receptor-antagonist-%C3%AE-2-adrenoceptor-agonist-maba-molecule
#9
Mònica Aparici, Carla Carcasona, Israel Ramos, José Luís Montero, José Luís Ortiz, Julio Cortijo, Carlos Puig, Dolors Vilella, Chris Doe, Amadeu Gavaldà, Montserrat Miralpeix
LAS190792 is a novel muscarinic antagonist and β2-adrenoceptor agonist in development for chronic respiratory diseases. This study investigated the pharmacological profile of LAS190792 in comparison to batefenterol, tiotropium, indacaterol and olodaterol. LAS190792 is potent at the human M3 receptor (pIC50: 8.8 in binding assays). It is selective for the β2-adrenoceptor over the β1-and β3-adrenoceptor, and shows a functional potency in a similar range to batefenterol and LABA compounds (pEC50 in spontaneous tone isolated trachea: 9...
July 17, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28720675/the-effect-of-nebulizer-position-on-aerosolized-epoprostenol-delivery-in-an-adult-lung-model
#10
Allison C Anderson, Meagan N Dubosky, Kelly A Fiorino, Vanessa Quintana, Carl A Kaplan, David L Vines
BACKGROUND: Aerosolized epoprostenol is an alternative for inhaled nitric oxide in the management of pulmonary arterial hypertension and possibly acute hypoxemia. Our objective was to determine differences in drug deposition based on different nebulizer positions in the ventilator circuit, using a vibrating mesh nebulizer. METHODS: An 8.0-mm inner diameter endotracheal tube (ETT) was connected to a training test lung, compliance of 30 mL/cm H2O, with a collecting filter placed at the ETT-test lung junction...
July 18, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28718683/the-measurement-of-cough-response-to-bronchoconstriction-induced-by-methacholine-inhalation-in-healthy-subjects-an-examination-using-the-astograph-method
#11
Johsuke Hara, Masaki Fujimura, Noriyuki Ohkura, Tamami Sakai, Kenta Yamamura, Miki Abo, Hayato Koba, Satoshi Watanabe, Taro Yoneda, Shingo Nishikawa, Takashi Sone, Hideharu Kimura, Yoshihisa Ishiura, Kazuo Kasahara
BACKGROUND: We demonstrated that heightened cough response to bronchoconstriction is a fundamental feature of cough variant asthma (CVA). To evaluate this physiological feature of CVA in daily clinical practice, it is necessary to clarify the cough response to bronchoconstriction in healthy subjects. We evaluated cough response to methacholine (MCh)-induced bronchoconstriction in healthy subjects. A forced oscillometry technique was used to measure airway resistance changes with Mch. METHODS: Healthy never-smokers (21 men, 20 women; mean 22...
July 18, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28718249/frequency-of-undiagnosed-chronic-obstructive-pulmonary-disease-in-patients-with-coronary-artery-disease
#12
Raza Ullah, Shahid Salam, Tahir Ghaffar, Rahim Muhammad, Imran Khan
BACKGROUND: Chronic obstructive airway disease (COPD) is considered as risk factor for coronary artery disease (CAD) along with other risk factors. This study was conducted to determine the frequency of undiagnosed chronic obstructive pulmonary disease in patients with coronary artery disease. METHODS: This cross-sectional study was conducted in the Pulmonology and Cardiology wards/OPD's of Khyber Teaching Hospital Peshawar. Patients more than 35 years of age, diagnosed with CAD of either gender were included...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28717881/a-retrospective-comparison-of-inhaled-milrinone-and-iloprost-in-post-bypass-pulmonary-hypertension
#13
Kassiani Theodoraki, Apostolos Thanopoulos, Panagiota Rellia, Evangelos Leontiadis, Dimitrios Zarkalis, Konstantinos Perreas, Theophani Antoniou
During cardiac operations, weaning from cardiopulmonary bypass (CPB) may prove challenging as a result of superimposed acute right ventricular dysfunction in the setting of elevated pulmonary vascular resistance (PVR). The aim of this study was to retrospectively evaluate the effect of inhaled milrinone versus inhaled iloprost in patients with persistent pulmonary hypertension following discontinuation of CPB. Eighteen patients with elevated PVR post-bypass were administered inhaled milrinone at a cumulative dose of 50 μg kg(-1)...
July 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28708440/model-calculations-of-regional-deposition-and-disposition-for-single-doses-of-inhaled-liposomal-and-dry-powder-ciprofloxacin
#14
Andrew R Martin, Warren H Finlay
BACKGROUND: Model predictions of regional deposition in the respiratory tract are useful in assessing factors that influence the effectiveness of aerosol delivery. Regional deposition models have previously been coupled with models of mucous production and clearance to estimate initial concentrations of drug deposited in the airway surface liquid (ASL) lining tracheobronchial airways. METHODS: Established models of regional deposition and ASL volumes were used to provide input to a new model evaluating the disposition of drug resulting from dissolution or release, absorption, and mucociliary clearance...
July 14, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28694692/health-resource-utilization-for-inpatients-with-copd-treated-with-nebulized-arformoterol-or-nebulized-formoterol
#15
Vaidyanathan Ganapathy, Michael D Stensland
OBJECTIVE: Arformoterol is the (R,R)-enantiomer of formoterol. Preclinical studies suggest that it is a stronger bronchodilator than the racemic (R,R/S,S)-formoterol; however, its potential clinical advantages have not been demonstrated. This study compared the length of stay (LOS), 30-day readmission rates, and doses of rescue medication administered in hospitalized patients with COPD who were treated with nebulized arformoterol or nebulized formoterol. METHODS: This retrospective analysis utilized data from Premier, Inc...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28692913/particle-and-bioaerosol-characteristics-in-a-paediatric-intensive-care-unit
#16
Congrong He, Ian M Mackay, Kay Ramsay, Zhen Liang, Timothy Kidd, Luke D Knibbs, Graham Johnson, Donna McNeale, Rebecca Stockwell, Mark G Coulthard, Debbie A Long, Tara J Williams, Caroline Duchaine, Natalie Smith, Claire Wainwright, Lidia Morawska
The paediatric intensive care unit (PICU) provides care to critically ill neonates, infants and children. These patients are vulnerable and susceptible to the environment surrounding them, yet there is little information available on indoor air quality and factors affecting it within a PICU. To address this gap in knowledge we conducted continuous indoor and outdoor airborne particle concentration measurements over a two-week period at the Royal Children's Hospital PICU in Brisbane, Australia, and we also collected 82 bioaerosol samples to test for the presence of bacterial and viral pathogens...
July 7, 2017: Environment International
https://www.readbyqxmd.com/read/28687885/determination-of-as-se-and-hg-in-fuel-samples-by-in-chamber-chemical-vapor-generation-icp-oes-using-a-flow-blurring%C3%A2-multinebulizer
#17
Miriam García, Miguel Ángel Aguirre, Antonio Canals
In this work, a new and simple analytical methodology based on in-chamber chemical vapor generation has been developed for the spectrochemical analysis of commercial fuel samples. A multiple nebulizer with three nebulization units has been employed for this purpose: One unit was used for sample introduction, while the other two were used for the necessary reagent introduction. In this way, the aerosols were mixed inside the spray chamber. Through this method, analyte transport and, therefore, sensitivity are improved in inductively coupled plasma-optical emission spectrometry...
July 7, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28687551/nebulized-opioids-for-the-palliation-of-dyspnea-in-terminally-ill-patients
#18
Titilola M Afolabi, Milap C Nahata, Vinita Pai
PURPOSE: The use of nebulized opioids for the palliation of dyspnea in terminally ill patients is reviewed. SUMMARY: More than 50% of patients with advanced diseases experience dyspnea during their final stages of life. Systemically administered opioids are recommended for the management of dyspnea in these patients, but adverse effects may limit their use. Nebulization offers an alternative route for administering opioids, providing relief of dyspnea while minimizing adverse events...
July 15, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28683216/pulmonary-drug-delivery-following-continuous-vibrating-mesh-nebulization-and-inspiratory-synchronized-vibrating-mesh-nebulization-during-noninvasive-ventilation-in-healthy-volunteers
#19
Jean-Bernard Michotte, Enrico Staderini, Anne-Sophie Aubriot, Emilie Jossen, Jonathan Dugernier, Giuseppe Liistro, Gregory Reychler
BACKGROUND: A breath-synchronized nebulization option that could potentially improve drug delivery during noninvasive positive pressure ventilation (NIPPV) is currently not available on single-limb circuit bilevel ventilators. The aim of this study was to compare urinary excretion of amikacin following aerosol delivery with a vibrating mesh nebulizer coupled to a single-limb circuit bilevel ventilator, using conventional continuous (Conti-Neb) and experimental inspiratory synchronized (Inspi-Neb) nebulization modes...
July 6, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28681333/preparation-of-a-sustained-release-nebulized-aerosol-of-r-terbutaline-hydrochloride-liposome-and-evaluation-of-its-anti-asthmatic-effects-via-pulmonary-delivery-in-guinea-pigs
#20
Qingrui Li, Shuyao Zhan, Qing Liu, Hao Su, Xi Dai, Hai Wang, Huimin Beng, Wen Tan
An aerosolized liposome formulation for the pulmonary delivery of an anti-asthmatic medication was developed. Asthma treatment usually requires frequent administration of medication for a sustained bronchodilator response. Liposomes are known for their sustained drug release capability and thus would be a suitable delivery system for prolonging the therapeutic effect of anti-asthmatic medication. Liposomes prepared by thin film hydration were loaded with a model drug, R-terbutaline hydrochloride(R-TBH), using an ammonium sulfate-induced transmembrane electrochemical gradient...
July 5, 2017: AAPS PharmSciTech
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