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Muralidharan P, Mallory EK, Malapit M, Phan H, Ledford JG, Hayes D, Mansour HM. Advanced design and development of nanoparticle/microparticle dual-drug combination lactose carrier-free dry powder inhalation aerosols. RSC Adv 2020; 10:41846-41856. [PMID: 33391731 PMCID: PMC7689944 DOI: 10.1039/d0ra07203f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/03/2020] [Indexed: 11/21/2022] Open
Abstract
Rationale: lactose is the only FDA-approved carrier for dry powder inhaler (DPI) formulations in the US. Lactose carrier-based DPI products are contraindicated in patients with a known lactose allergy. Hence, inhaler formulations without lactose will benefit lactose allergic asthmatics. Objectives: to rationally design and develop lactose carrier-free dry powder inhaler formulations of fluticasone propionate and salmeterol xinafoate that will benefit people with known lactose allergy. The study also aims at improving the aerosol deposition of the dry powder formulation through advanced particle engineering design technologies to create inhalable powders consisting of nanoparticles/microparticles. Methods: advanced DPI nanoparticle/microparticle formulations were designed, developed and optimized using organic solution advanced closed-mode spray drying. The co-spray dried (co-SD) powders were comprehensively characterized in solid-state and in vitro comparative analysis of the aerodynamic performance of these molecularly mixed formulations was conducted with the marketed formulation of Advair® Diskus® interactive physical mixture. Measurements and main results: comprehensive solid-state physicochemical characterization of the powders showed that the engineered co-SD particles were small and spherical within the size range of 450 nm to 7.25 μm. Improved fine particle fraction and lower mass median aerodynamic diameter were achieved by these DPI nanoparticles/microparticles. Conclusions: this study has successfully produced a lactose-free dry powder formulation containing fluticasone propionate and salmeterol xinafoate with mannitol as excipient engineered as inhalable DPI nanoparticles/microparticles by advanced spray drying. Further, co-spray drying with mannitol and using Handihaler® device can generate higher fine particle mass of fluticasone/salmeterol. Mannitol, a mucolytic agent and aerosol performance enhancer, is a suitable excipient that can enhance aerosol dispersion of DPIs.
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Affiliation(s)
- Priya Muralidharan
- The University of Arizona, College of Pharmacy, 1703 E. Mabel St, Tucson, AZ 85721-0207, USA. ; Tel: +1-520-626-2768
| | - Evan K Mallory
- The University of Arizona, College of Pharmacy, 1703 E. Mabel St, Tucson, AZ 85721-0207, USA. ; Tel: +1-520-626-2768
| | - Monica Malapit
- The University of Arizona, College of Pharmacy, 1703 E. Mabel St, Tucson, AZ 85721-0207, USA. ; Tel: +1-520-626-2768
| | - Hanna Phan
- The University of Arizona, College of Pharmacy, 1703 E. Mabel St, Tucson, AZ 85721-0207, USA. ; Tel: +1-520-626-2768.,The Asthma & Airway Disease Research Center, Tucson, AZ, USA
| | - Julie G Ledford
- The Asthma & Airway Disease Research Center, Tucson, AZ, USA.,The University of Arizona College of Medicine, Department of Cellular & Molecular Medicine, Tucson, AZ, USA
| | - Don Hayes
- The Departments of Pediatrics and Internal Medicine, Lung and Heart-Lung Transplant Programs, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Heidi M Mansour
- The University of Arizona, College of Pharmacy, 1703 E. Mabel St, Tucson, AZ 85721-0207, USA. ; Tel: +1-520-626-2768.,The University of Arizona College of Medicine, Department of Medicine, Division of Translational & Regenerative Medicine, Tucson, AZ, USA.,The University of Arizona, The BIO5 Research Institute, Tucson, AZ, USA.,The University of Arizona, Institute of the Environment, Tucson, AZ, USA
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