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Dry powder inhaler

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https://www.readbyqxmd.com/read/28720676/inhaler-training-delivered-by-internet-based-home-videoconferencing-improves-technique-and-quality-of-life
#1
Rachel M Thomas, Emily R Locke, Deborah M Woo, Ethan H K Nguyen, Valerie G Press, Troy A Layouni, Emily H Trittschuh, Gayle E Reiber, Vincent S Fan
BACKGROUND: COPD is common, and inhaled medications can reduce the risk of exacerbations. Incorrect inhaler use is also common and may lead to worse symptoms and increased exacerbations. We examined whether inhaler training could be delivered using Internet-based home videoconferencing and its effect on inhaler technique, self-efficacy, quality of life, and adherence. METHODS: In this pre-post pilot study, participants with COPD had 3 monthly Internet-based home videoconference visits with a pharmacist who provided inhaler training using teach-to-goal methodology...
July 18, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28720537/inhaled-powder-formulation-of-naked-sirna-using-spray-drying-technology-with-l-leucine-as-dispersion-enhancer
#2
Michael Y T Chow, Yingshan Qiu, Fiona F K Lo, Hinson H S Lin, Hak-Kim Chan, Philip C L Kwok, Jenny K W Lam
Pulmonary delivery of short interfering RNA (siRNA) has been widely studied in both animal and clinical studies to treat various respiratory diseases by gene silencing through RNA interference. Some of these studies showed that the administration of naked siRNA (without the use of any delivery vectors) could achieve satisfactory gene silencing effect, a unique feature to pulmonary delivery. Liquid aerosols were mostly used with very limited studies on the use of powder aerosols for siRNA. In this study, siRNA was co-spray dried with mannitol and L-leucine, the latter being a dispersion enhancer...
July 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28708440/model-calculations-of-regional-deposition-and-disposition-for-single-doses-of-inhaled-liposomal-and-dry-powder-ciprofloxacin
#3
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/28696775/dry-powder-inhalers-and-humidity-another-factor-to-consider-to-ensure-adequate-lung-delivery
#4
Roy A Pleasants
None required for a Letter to the Edittor.
July 11, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28690715/a-novel-aerodynamic-sizing-method-for-pharmaceutical-aerosols-using-image-based-analysis-of-settling-velocities
#5
Rami Fishler, Josué Sznitman
This article discusses a novel method to estimate aerodynamic particle size distributions (APSDs) of pharmaceutical aerosols through direct measurement of particle settling velocities using image-based analysis and particle tracking techniques. This simple, optical method provides accurate and fast measurements (approximately 1 minute) with few sources of bias due to specific device design choices or operation conditions. A proof-of-concept for the method is demonstrated by measuring APSDs for widely available commercial dry powder inhalers (DPIs), then comparing the results with previously published data from cascade impactors (CIs) and the Aerodynamic Particle Sizer (APS)...
June 2017: Inhalation
https://www.readbyqxmd.com/read/28683805/patient-preferences-for-dry-powder-inhaler-attributes-in-asthma-and-chronic-obstructive-pulmonary-disease-in-france-a-discrete-choice-experiment
#6
Natalia Hawken, Saku Torvinen, Mohamed-Elmoctar Neine, Ikbel Amri, Mondher Toumi, Samuel Aballéa, Adam Plich, Nicolas Roche
BACKGROUND: Dry powder inhalers (DPIs) are often used in asthma and chronic obstructive pulmonary disease (COPD) therapies. Using the discrete choice experiment (DCE) methodology, this study conducted in France was designed to assess patients' preferences for different attributes of DPIs. METHODS: Attributes of DPIs were defined based on a literature review, patient focus group discussions and interviews with healthcare professionals (qualitative phase of the study)...
July 6, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28683222/application-of-a-one-dimensional-computational-model-for-the-prediction-of-deposition-from-a-dry-powder-inhaler
#7
Konstantinos Gourgoulianis, Zoi Daniil, Katerina Athanasiou, Stavroula Rozou, Vasileios Bontozoglou
BACKGROUND: Accurate prediction of the regional deposition of inhaled dry powders as a function of powder properties and breathing pattern is a long-term research goal for pulmonary drug delivery. In the present work, deposition along the respiratory tract of dry powders of Fluticasone propionate and Salmeterol is predicted. METHODS: A one-dimensional particle transport and deposition model is used, whose novelty is in the treatment of the alveolar space of each airway generation as an efficient mixing chamber...
July 6, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28683212/a-randomized-crossover-trial-evaluating-patient-handling-preference-and-ease-of-use-of-the-fluticasone-propionate-formoterol-breath-triggered-inhaler
#8
David Bell, Lucielle Mansfield, Mark Lomax
BACKGROUND: Appropriate inhaler selection is of fundamental importance in obstructive lung disease management. Key factors in device selection include a patient's capacity to operate a particular device and their preference for it. METHODS: This randomized, open-label, two-period, crossover study (NCT01739387) compared the ability of adolescent and adult patients with obstructive lung disease to correctly handle the fluticasone propionate/formoterol fumarate (FP/FORM; Flutiform(®)) pressurized metered-dose inhaler (pMDI) and FP/FORM K-haler(®), a novel breath-triggered inhaler (BTI), following a simple, standardized training regimen...
July 6, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28678314/lung-characteristics-in-elderly-males-and-females-patients-with-copd-differences-and-optimal-use-of-dry-powder-inhalers-dpis
#9
C Terzano, F Oriolo
OBJECTIVE: We have measured peak inspiratory flow (PIF), inspiratory capacity (IC), maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP) and other functional parameters in COPD patients to investigate which PIF's patients generate with maximal effort, through three different resistances, representing Diskus, Nexthaler and Turbuhaler. PATIENTS AND METHODS: Forty patients with COPD were enrolled in this study. All patients were examined: pulmonary function tests, including flow/volume spirometry and N2-wash out, were conducted...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28652914/erratum-to-recent-advances-in-capsule-based-dry-powder-inhaler-technology
#10
Federico Lavorini, Massimo Pistolesi, Omar S Usmani
[This corrects the article DOI: 10.1186/s40248-017-0092-5.].
2017: Multidisciplinary Respiratory Medicine
https://www.readbyqxmd.com/read/28639542/fluticasone-propionate-and-fluticasone-propionate-salmeterol-multidose-dry-powder-inhalers-compared-with-placebo-for-persistent-asthma
#11
L D Sher, G Yiu, A Sakov, S Liu, C F Caracta
BACKGROUND: A novel, inhalation-driven, multidose dry powder inhaler (MDPI) has been developed, which allows for lowerdoses of fluticasone propionate (Fp) and Fp/salmeterol (FS) for the treatment of patients with asthma. OBJECTIVE: This phase III, multicenter, double-blind, parallel-group study (NCT02141854) evaluated the efficacy and safetyof Fp MDPI and FS MDPI versus placebo MDPI. METHODS: Patients aged greater than or equal to 12 years with persistent asthma who previously took an inhaled corticosteroid with or without a long-acting beta-agonist entered a 14- to 21-day run-in period, during which they received single-blind, low-dose Fp MDPI 50 microgram (1 inhalation twice daily [b...
June 21, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28629719/alpha-ketoglutarate-nanoparticles-a-potentially-effective-treatment-for-cyanide-poisoning
#12
Shaheen Sultana, Sushma Talegaonkar, Dhruv Kumar Nishad, Gaurav Mittal, F J Ahmad, Aseem Bhatnagar
The purpose of this research work was to prepare nanosized formulation of alpha ketoglutarate as dry powder inhaler for cyanide poisoning. Nanosizing can be approached by solid phase and liquid phase method. The different conditions encountered in both these approaches can greatly affect the particle characteristics. In this study milling and precipitation technique were compared to study their effect on α-KG particles characteristics. Differences in choice of stabilizers were observed between the two processing techniques...
June 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28626480/development-of-dry-powder-inhaler-containing-tadalafil-loaded-plga-nanoparticles
#13
Jaleh Varshosaz, Somayeh Taymouri, Hamed Hamishehkar, Razieh Vatankhah, Shadi Yaghubi
Inhalable dry powders containing poly lactic-co-glycolic acid (PLGA) nanoparticles (NPs) were developed for the delivery of tadalafil (TAD) for treatment of life-treating pulmonary arterial hypertension. Taguchi design was employed to evaluate the effects of different formulation variables on the physicochemical characteristics of PLGA-NPs prepared using emulsion solvent evaporation method. Inhalable PLGA-NPs of TAD were successfully prepared by co-spray drying the PLGA-NPs with inert carriers. Physicochemical characteristics and in vitro deposition of the aerosolized drug were also evaluated...
June 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28619456/how-does-secondary-processing-affect-the-physicochemical-properties-of-inhalable-salbutamol-sulphate-particles-a-temporal-investigation
#14
Joana T Pinto, Snezana Radivojev, Sarah Zellnitz, Eva Roblegg, Amrit Paudel
As pulmonary drug delivery is extended from low doses to high doses, physicochemical characteristics of the active pharmaceutical ingredient gain importance in the development of dry powder inhalers. Therefore, the present work aims to understand the impact of distinct engineering techniques on the process induced physicochemical characteristics of salbutamol sulphate particles over time. The particle engineering techniques chosen were jet-milling and spray-drying, two well used processes in the production of predominately crystalline and amorphous inhalable particles, respectively...
June 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28612675/formulation-of-novel-dry-powder-inhalation-for-fluticasone-propionate-and-salmeterol-xinafoate-with-capsule-based-device
#15
Kyeong Soo Kim, Jeong Hyun Kim, Sung Giu Jin, Dong Wuk Kim, Jong Oh Kim, Chul Soon Yong, Yu Seok Youn, Kyung Taek Oh, Jong Soo Woo, Han-Gon Choi
The aim of this study was to develop a novel fluticasone propionate (FP) and salmeterol xinafoate (SX)-loaded dry powder inhaler (DPI) system, which was composed of powder formulation and performance. The air flow resistances were determined with various types of DPI device, showing that the modified RS01 device gave the specific resistance similar to the commercial DPI device. The particle properties of fluticasone propionate (FP), salmeterol xinafoate (SX) and inhalation grade lactose particles, such as particle size, size distribution and fine content, were assessed...
June 14, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28603412/in-vitro-dose-comparison-of-respimat-%C3%A2-inhaler-with-dry-powder-inhalers-for-copd-maintenance-therapy
#16
Anna-Maria Ciciliani, Peter Langguth, Herbert Wachtel
BACKGROUND: Combining in vitro mouth-throat deposition measurements, cascade impactor data and computational fluid dynamics (CFD) simulations, four different inhalers were compared which are indicated for chronic obstructive pulmonary disease (COPD) treatment. METHODS: The Respimat inhaler, the Breezhaler, the Genuair, and the Ellipta were coupled to the idealized Alberta throat model. The modeled dose to the lung (mDTL) was collected downstream of the Alberta throat model using either a filter or a next generation impactor (NGI)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28598050/consensus-document-on-home-nebulization-for-maintenance-treatment-of-obstructive-airway-diseases-a-joint-initiative-by-the-national-allergy-asthma-bronchitis-institute-naabi-and-chest-research-foundation-crf
#17
Aloke G Ghoshal, Sundeep Salvi, Raja Dhar, Randeep Guleria, Ashok Mahashur, Anshuman Mukhopadhyay, Rmpl Ramanathan
Recent years have seen an increase in the use of nebulizers for delivering maintenance therapy in obstructive airway diseases (OADs) such as asthma and chronic obstructive pulmonary disease (COPD). The probable factors associated with this increase at home are: convenience of drug delivery, technological advances making the nebulizer equipment more efficient and portable, increase in the prevalence of OADs and the ageing population which may impact the optimal use of handheld inhalers such as pressurized metered dose inhalers (pMDIs) and dry powder inhalers (DPIs)...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28583335/improved-respirable-fraction-of-budesonide-powder-for-dry-powder-inhaler-formulations-produced-by-advanced-supercritical-co2-processing-and-use-of-a-novel-additive
#18
Yuta Miyazaki, Naoki Aruga, Kazunori Kadota, Yuichi Tozuka, Hirofumi Takeuchi
A budesonide (BDS) suspension was obtained via advanced supercritical carbon dioxide (scCO2) processing. Thereafter, the suspension was freeze-dried (FD) to produce BDS particles for dry powder inhaler formulations (scCO2/FD processing). The scCO2/FD processed BDS powder showed low crystallinity by powder X-ray diffraction and a rough surface by scanning electron microscopy. The respirable fraction of BDS was assessed using a twin impinger and revealed that the amount of the scCO2/FD processed sample that reached stage 2 was 4-fold higher than that of the supplied powder...
June 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28583333/dry-powder-formulation-of-kanamycin-with-enhanced-aerosolization-efficiency-for-drug-resistant-tuberculosis
#19
Mohammad A M Momin, Shubhra Sinha, Ian G Tucker, Colin Doyle, Shyamal C Das
BACKGROUND: Kanamycin, an injectable agent, is currently used to treat drug-resistant tuberculosis (TB). Parenteral kanamycin causes high systemic toxicity which could be avoided by direct delivery to the lungs. This study focused on producing a highly aerosolizable dry-powder of hygroscopic kanamycin by spray-drying with l-leucine. METHODS: Kanamycin powders were prepared with different concentrations (0, 5, 10, 15 and 20% w/w) of l-leucine using the Buchi B-290 Mini Spray-Dryer...
June 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28583330/liposomal-andrographolide-dry-powder-inhalers-for-treatment-of-bacterial-pneumonia-via-anti-inflammatory-pathway
#20
Miao Li, Tongtong Zhang, Lifei Zhu, Rui Wang, Yiguang Jin
Andrographolide (AG) is a chemical entity from traditional Chinese herbs and its oral pills have been applied to the treatment of respiratory inflammation. Here we report pulmonary delivery of liposomal AG dry powder inhalers (LADPIs) for treatment of Staphylococcus aureus-induced pneumonia. AG liposomes were prepared with the injection method and then freeze-dried for preparation of LADPIs. AG liposomes were small and stable with a mean size of 77.91nm and a zeta potential of -56.13mV. Liposomes were well recovered after re-hydration of LADPIs that were suitable for pulmonary delivery with a mass mean aerodynamic diameter (MMAD) of 4...
June 2, 2017: International Journal of Pharmaceutics
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