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Dry powder inhaler

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https://www.readbyqxmd.com/read/29779406/inhalation-delivery-of-topotecan-is-superior-to-intravenous-exposure-for-suppressing-lung-cancer-in-a-preclinical-model
#1
Philip J Kuehl, Marcie J Grimes, Devon Dubose, Michael Burke, David A Revelli, Andrew P Gigliotti, Steven A Belinsky, Mathewos Tessema
Intravenous (IV) topotecan is approved for the treatment of various malignancies including lung cancer but its clinical use is greatly undermined by severe hematopoietic toxicity. We hypothesized that inhalation delivery of topotecan would increase local exposure and efficacy against lung cancer while reducing systemic exposure and toxicity. These hypotheses were tested in a preclinical setting using a novel inhalable formulation of topotecan against the standard IV dose. Respirable dry-powder of topotecan was manufactured through spray-drying technology and the pharmacokinetics of 0...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29778822/formulation-techniques-for-high-dose-dry-powders
#2
Ashlee D Brunaugh, Hugh D C Smyth
Delivery of drugs to the lungs via dry powder inhaler (DPI) is a promising approach for the treatment of both local pulmonary conditions and systemic diseases. Though DPIs are widely used for the pulmonary deposition of potent bronchodilators, anticholinergics, and corticosteroids, there is growing interest in the utilization of this delivery system for the administration of high drug doses to the lungs, as made evident by recent regulatory approvals for anti-microbial, anti-viral and osmotic agents. However, the formulation of high dose DPIs carries several challenges from both a physiological and physicochemical standpoint...
May 17, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29754324/cost-utility-analysis-of-an-intervention-designed-to-reduce-the-critical-handling-error-of-insufficient-inspiratory-effort
#3
Rebecca Forster, Aran Ratcliffe, Megan Lewis, Amy Crossley, Julio López Bastida, William C N Dunlop
OBJECTIVES: Up to 70-80% of patients use inhalers incorrectly. Dry-powder inhalers (DPIs) require forceful inhalation for optimal delivery, and approximately 40% of Global Initiative for Asthma (GINA)-defined Step-3+ patients inhale corticosteroid and long-acting beta-agonist through DPIs. The CRITIKAL study (Price et al. in J Allergy Clin Immunol Pract 5:1071-e9-1081-e9, 2017) found a statistically significant association between 'insufficient inspiratory effort' error and increased risk of uncontrolled asthma and hospitalisation-requiring exacerbations...
May 12, 2018: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/29751142/preparation-of-micrometric-powders-of-parathyroid-hormone-pth1-34-loaded-chitosan-oligosaccharide-by-supercritical-fluid-assisted-atomization
#4
Dong-Xiao Hong, Yu-Long Yun, Yi-Xin Guan, Shan-Jing Yao
Parathyroid hormone (PTH1-34)-loaded dry powders were fabricated from aqueous solution for pulmonary administration using supercritical fluid assisted atomization introduced by a hydrodynamic cavitation mixer (SAA-HCM). Herein, chitosan oligosaccharide (CSO) was selected as a carrier in an effort to enhance transmucosal absorption of the drug. Well-defined, separated and spherical PTH(1-34)/CSO composite microparticles were obtained, and the particles size could be well controlled with narrow distribution. Aerodynamic performance was determined using next generation impactor (NGI), and the mass median aerodynamic diameter (MMAD) ranged strictly 1-5 μm range with fine particle fraction (FPF) up to 63...
May 8, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29733972/application-of-an-inline-dry-powder-inhaler-to-deliver-high-dose-pharmaceutical-aerosols-during-low-flow-nasal-cannula-therapy
#5
Dale Farkas, Michael Hindle, P Worth Longest
Inline dry powder inhalers (DPIs) offer a potentially effective option to deliver high dose inhaled medications simultaneously with mechanical ventilation. The objective of this study was to develop an inline DPI that is actuated using a low volume of air (LV-DPI) to efficiently deliver pharmaceutical aerosols during low flow nasal cannula (LFNC) therapy. A characteristic feature of the new inline LV-DPIs was the use of hollow capillary tubes that both pierced the capsule and provided a pathway for inlet air and exiting aerosol...
May 4, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29731372/-inhaled-chemotherapy-part-1-general-concept-and-current-technological-challenges
#6
REVIEW
R Rosière, J Hureaux, V Levet, K Amighi, N Wauthoz
Despite severe adverse effects, chemotherapy is still widely used in the treatment of lung tumors, including primary lung tumors and metastases. In order to reduce the risk of harm and to intensify treatment responses, several strategies have been described recently. These include the use of nanomedicine-based chemotherapies and pulmonary drug delivery. However, to treat lung tumors, inhalation cannot be effective and safe without an adaptation of current inhalation techniques, i.e. inhalation devices and drug formulations...
May 3, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29720915/resource-use-evaluation-of-tobramycin-formulations-in-a-state-medicaid-program
#7
Shellie L Keast
OBJECTIVE: Patients with cystic fibrosis (CF) often suffer from chronic infection with Pseudomonas aeruginosa. For patients with CF, 6 years of age and older, with P aeruginosa persistently present in cultures of the airways, the Cystic Fibrosis Foundation recommends the chronic use of inhaled tobramycin to reduce exacerbations. To ease treatment burden, a new dry powder formulation was developed. The objective of this research was to compare resource utilization between tobramycin inhaled solution (TIS) and a new tobramycin dry powder (TIP) formulation in a state Medicaid program...
March 2018: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/29717099/results-of-a-pulmonologist-survey-regarding-knowledge-and-practices-with-inhalation-devices-for-copd
#8
Sidney S Braman, Brian W Carlin, Nicola A Hanania, Donald A Mahler, Jill A Ohar, Victor Pinto-Plata, Tina Shah, David Eubanks, Rajiv Dhand
BACKGROUND: COPD guidelines advise on inhaled medication use, yet no advice is offered on when to use and which type of patient could benefit from a specific delivery device. We investigated pulmonologists' perception of their knowledge and practices with delivery devices for COPD management. METHODS: An online survey was designed by a steering committee of American Thoracic Society clinicians and scientists and conducted by a national market research firm between January 7 and 29, 2016...
May 1, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29699790/immunological-and-physical-evaluation-of-the-multistage-tuberculosis-subunit-vaccine-candidate-h56-caf01-formulated-as-a-spray-dried-powder
#9
Aneesh Thakur, Pall Thor Ingvarsson, Signe Tandrup Schmidt, Fabrice Rose, Peter Andersen, Dennis Christensen, Camilla Foged
Liquid vaccine dosage forms have limited stability and require refrigeration during their manufacture, distribution and storage. In contrast, solid vaccine dosage forms, produced by for example spray drying, offer improved storage stability and reduced dependence on cold-chain facilities. This is advantageous for mass immunization campaigns for global public health threats, e.g., tuberculosis (TB), and offers cheaper vaccine distribution. The multistage subunit vaccine antigen H56, which is a fusion protein of the Mycobacterium tuberculosis (Mtb) antigens Ag85B, ESAT-6, and Rv2660, has been shown to confer protective efficacy against active TB before and after Mtb exposure in preclinical models, and it is currently undergoing clinical phase 2a testing...
April 23, 2018: Vaccine
https://www.readbyqxmd.com/read/29681239/inhaled-formulation-and-device-selection-bridging-the-gap-between-preclinical-species-and-first-in-human-studies
#10
Jennifer L Wylie, Aileen House, Peter J Mauser, Shari Sellers, Jenna Terebetski, Zhenyu Wang, Jason D Ehrick
The factors that influence inhaled first-in-human (FIH) device and formulation selection often differ significantly from the factors that have influenced the preceding preclinical experiments and inhalation toxicology work. In order to minimize the risk of delivery issues negatively impacting a respiratory pipeline program, the preclinical and FIH delivery systems must be considered holistically. This topic will be covered in more detail in this paper. Several examples will be presented that highlight how appropriate scientific strategy can help bridge the gap between delivering to preclinical species and human...
May 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/29678544/influence-of-excipients-on-physical-and-aerosolization-stability-of-spray-dried-high-dose-powder-formulations-for-inhalation
#11
Nivedita Shetty, Heejun Park, Dmitry Zemlyanov, Sharad Mangal, Sonal Bhujbal, Qi Tony Zhou
The aim of this study is to investigate the influence of excipients on physical and aerosolization stability of spray dried Ciprofloxacin dry powder inhaler formulations. The model drug, Ciprofloxacin hydrochloride, was co-spray dried with excipients such as disaccharides (sucrose, lactose, trehalose), mannitol and L-leucine. The spray dried samples were stored at two different relative humidity (RH) conditions of: (1) 20% and (2) 55% RH at 20°C. Ciprofloxacin co-spray dried with disaccharides and L-leucine in the mass ratio of 1:1 demonstrated an increase in fine particle fraction (FPF) as compared with the spray dried Ciprofloxacin alone when stored at 20% RH...
April 17, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29655797/pulmonary-administration-of-a-dry-powder-formulation-of-the-antifibrotic-drug-tilorone-reduces-silica-induced-lung-fibrosis-in-mice
#12
Ville Vartiainen, Janne Raula, Luis M Bimbo, Jenni Viinamäki, Janne T Backman, Nurcin Ugur, Esko Kauppinen, Eva Sutinen, Emmi Joensuu, Katri Koli, Marjukka Myllärniemi
The aim of this work was to study the antifibrotic effect of pulmonary administration of tilorone to lung fibrosis. L-leucine coated tilorone particles were prepared and their aerosolization properties were analyzed using two dry powder inhalers (Easyhaler and Twister). In addition, the biological activity and cell monolayer permeation was tested. The antifibrotic effect of tilorone delivered by oropharyngeal aspiration was studied in vivo using a silica-induced model of pulmonary fibrosis in mice in a preventive setting...
April 12, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29650761/once-daily-triple-therapy-inhaler-for-copd
#13
(no author information available yet)
▼Trelegy Ellipta (GSK) is a dry powder inhaler containing fluticasone furoate (inhaled corticosteroid [ICS]), vilanterol trifenatate (long-acting beta2 agonist [LABA]) and umeclidinium bromide (long-acting muscarinic antagonist [LAMA]).1 It is licensed for once-daily use as maintenance treatment for adults with moderate to severe chronic obstructive pulmonary disease (COPD) who are not adequately treated by a combination of an ICS and a LABA. Here, we consider the evidence for this combination product and discuss how it fits with current management strategies...
April 2018: Drug and Therapeutics Bulletin
https://www.readbyqxmd.com/read/29649519/limitations-of-high-dose-carrier-based-formulations
#14
Stewart Yeung, Daniela Traini, Alan Tweedie, David Lewis, Tanya Church, Paul M Young
PURPOSE: This study was performed to investigate how increasing the active pharmaceutical ingredient (API) content within a formulation affects the dispersion of particles and the aerosol performance efficiency of a carrier based dry powder inhalable (DPI) formulation, using a custom dry powder inhaler (DPI) development rig. METHODS: Five formulations with varying concentrations of API beclomethasone dipropionate (BDP) between 1% and 30% (w/w) were formulated as a multi-component carrier system containing coarse lactose and fine lactose with magnesium stearate...
April 9, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29627404/development-of-spray-freeze-dried-sirna-pei-powder-for-inhalation-with-high-aerosol-performance-and-strong-pulmonary-gene-silencing-activity
#15
Tomoyuki Okuda, Masaki Morishita, Kimiyasu Mizutani, Ayumi Shibayama, Maki Okazaki, Hirokazu Okamoto
In the present study, a novel dry small interfering RNA (siRNA) powder for inhalation, containing polyethyleneimine (PEI) as a delivery vector, was produced by spray freeze drying (SFD). The powder had spherical and highly porous structure of approximately 10 μm in diameter with high aerosol performance for emission and lung delivery. The reconstituted siRNA/PEI complex after dissolution of the powder had almost the same physicochemical properties and in vitro gene silencing activity as the original one constituted in the sample solution before SFD, showing that the integrity of the siRNA was maintained...
April 5, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29626547/repurposing-excipients-as-active-inhalation-agents-the-mannitol-story
#16
Sandra D Anderson, Evangelia Daviskas, John D Brannan, Hak Kim Chan
The story of how we came to use inhaled mannitol to diagnose asthma and to treat cystic fibrosis began when we were looking for a surrogate for exercise as a stimulus to identify asthma. We had proposed that exercise-induced asthma was caused by an increase in osmolarity of the periciliary fluid. We found hypertonic saline to be a surrogate for exercise but an ultrasonic nebuliser was required. We produced a dry powder of sodium chloride but it proved unstable. We developed a spray dried preparation of mannitol and found that bronchial responsiveness to inhaling mannitol identified people with currently active asthma...
April 4, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29626509/manipulation-of-spray-drying-conditions-to-develop-dry-powder-particles-with-surfaces-enriched-in-hydrophobic-material-to-achieve-high-aerosolization-of-a-hygroscopic-drug
#17
Mohammad A M Momin, Ian G Tucker, Colin S Doyle, John A Denman, Shyamal C Das
This study aimed to develop dry powder particles with surfaces enriched in hydrophobic material by manipulation of spray-drying conditions and to investigate the effect of hydrophobic surface enrichment on aerosolization of hygroscopic drug. The composite dry powder formulations of kanamycin (hygroscopic drug) and rifampicin (hydrophobic drug) were produced by systematically (23 full factorial design) varying the drug ratio, co-solvent composition and inlet temperature using Buchi B-290 Mini Spray-Dryer. All the composite powder particles were inhalable in size (3...
April 4, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29625212/development-and-characterization-of-high-payload-combination-dry-powders-of-anti-tubercular-drugs-for-treating-pulmonary-tuberculosis
#18
Basanth Babu Eedara, Bhamini Rangnekar, Shubhra Sinha, Colin Doyle, Alex Cavallaro, Shyamal C Das
This study aimed to develop a high payload dry powder inhalation formulation containing a combination of the first line anti-TB drug, pyrazinamide, and the second line drug, moxifloxacin HCl. Individual powders of pyrazinamide (PSD ) and moxifloxacin (MSD ) and combination powders of the two drugs without (PM) and with 10% L-leucine (PML) and 10% DPPC (PMLD) were produced by spray drying. PSD contained >10 μm crystalline particles and showed poor aerosolization behaviour with a fine particle fraction (FPF) of 18...
April 3, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29621625/ciprofloxacin-dry-powder-for-inhalation-ciprofloxacin-dpi-technical-design-and-features-of-an-efficient-drug-device-combination
#19
REVIEW
Pamela J McShane, Jeffry G Weers, Thomas E Tarara, Alfred Haynes, Preeti Durbha, Danforth P Miller, Tobias Mundry, Elisabeth Operschall, J Stuart Elborn
Bronchiectasis is a chronic respiratory disease with heterogeneous etiology, characterized by a cycle of bacterial infection and inflammation, resulting in increasing airway damage. Exacerbations are an important cause of morbidity and are strongly associated with disease progression. Many patients with bronchiectasis suffer from two or more exacerbations per year. However, there are no approved therapies to reduce or delay exacerbations in this patient population. Ciprofloxacin DPI is in development as a long-term, intermittent therapy to reduce exacerbations in patients with non-cystic fibrosis (CF) bronchiectasis and evidence of respiratory pathogens...
April 2, 2018: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29600480/fragmented-particles-containing-octreotide-acetate-prepared-by-spray-drying-technique-for-dry-powder-inhalation
#20
Ailin Hou, Lu Li, Ying Huang, Vikramjeet Singh, Chune Zhu, Xin Pan, Guilan Quan, Chuanbin Wu
Dry powder inhalers (DPIs) have been proposed as an alternative administration route for protein and peptide drugs. However, DPI particles are easy to aggregate due to the strong interactions between the particles, leading to poor aerosolization performance. In this study, fragmented particles containing octreotide acetate (OA) were prepared by spray drying technique for dry powder inhalation, which were expected to decrease the particle-particle interaction by reducing the contact sites. Mannitol and ammonium carbonate were used as protein stabilizer and fragment-forming agent, respectively...
March 29, 2018: Drug Delivery and Translational Research
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