| Investigating the interactions of amino acid components on a mannitol-based spray-dried powder formulation for pulmonary delivery: A design of experiment approach. | |
| | |
MedLine Citation:
|
PMID: 21963471 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Combining an amino acid and a sugar is a known strategy in the formulation of spray or freeze dried biomolecule powder formulations. The effect of the amino acid leucine in enhancing performance of spray-dried dry powders has been previously demonstrated, but interaction effects of several constituents which may provide multiple benefits, are less well-understood. A 3 factor 2 level (2(3)) factorial design was used to study the effects of leucine, glycine and alanine in a mannitol-based dry powder formulation on particle size, aerosolisation, emitted dose and cohesion. Other qualitative tests including scanning electronic microscopy and X-ray powder diffraction were also conducted on the design of experiment (DoE) trials. The results show that the use of glycine and/or alanine, though structurally related to leucine, did not achieve similar aerosol performance enhancing effects, rather the particle formation was hindered. However, when used in appropriate concentrations with leucine, the combination of amino acids produced an enhanced performance regardless of the presence of glycine and/or alanine, yielding significantly modified particle properties. The results from the DoE analyses also revealed the lack of linearity of effects for certain responses with a significant curvature in the model which would otherwise not be discovered using a trial-and-error approach. |
| | |
Authors:
|
Tomás Sou; Laurence Orlando; Michelle P McIntosh; Lisa M Kaminskas; David A V Morton |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-9-21 |
Journal Detail:
|
Title: International journal of pharmaceutics Volume: - ISSN: 1873-3476 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
|
Created Date: 2011-10-3 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7804127 Medline TA: Int J Pharm Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011. Published by Elsevier B.V. |
Affiliation:
|
Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluation of the immunogenicity and in vivo toxicity of the antimicrobial peptide P34.
Next Document: Impact of acoustic airflow nebulization on intrasinus drug deposition of a human plastinated nasal c...