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Tai W, Arnold JC, Chan HK, Kwok PCL. Spray freeze dried cannabidiol with dipalmitoylphosphatidylcholine (DPPC) for inhalation and solubility enhancement. Int J Pharm 2024; 659:124235. [PMID: 38762165 DOI: 10.1016/j.ijpharm.2024.124235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/15/2024] [Accepted: 05/15/2024] [Indexed: 05/20/2024]
Abstract
Pulmonary delivery is an efficient route of administration to deliver cannabidiol (CBD) due to the high bioavailability and fast onset of action. The major formulation challenge is the poor aqueous solubility of CBD. This study aimed to produce inhalable CBD powders with enhanced solubility and characterise their solid-state properties. CBD was spray freeze dried with mannitol or trehalose dihydrate with and without dipalmitoylphosphatidylcholine (DPPC). All four powders had acceptable yields at > 70 % with porous and spherical particles. The two crystalline mannitol powders contained less residual solvent than both amorphous trehalose ones. The addition of DPPC did not affect the crystallinity and residual solvent level of the powders. Instead, DPPC made the particles more porous, decreased the particle size from 19-23 µm to 11-13 µm, and increased CBD solubility from 0.36 µg/mL to over 2 µg/mL. The two DPPC powders were dispersed from a low resistance RS01 inhaler, showing acceptable aerosol performance with emitted fractions at 91-93 % and fine particle fractions < 5 µm at 34-43 %. These formulations can be used as a platform to deliver CBD and other cannabinoids by inhalation.
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Affiliation(s)
- Waiting Tai
- Advanced Drug Delivery Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Jonathon Carl Arnold
- Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, The University of Sydney, NSW 2050, Australia; Discipline of Pharmacology, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Hak-Kim Chan
- Advanced Drug Delivery Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Philip Chi Lip Kwok
- Advanced Drug Delivery Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia.
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Iyer J, Brunsteiner M, Modhave D, Paudel A. Role of Crystal Disorder and Mechanoactivation in Solid-State Stability of Pharmaceuticals. J Pharm Sci 2023; 112:1539-1565. [PMID: 36842482 DOI: 10.1016/j.xphs.2023.02.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 02/28/2023]
Abstract
Common energy-intensive processes applied in oral solid dosage development, such as milling, sieving, blending, compaction, etc. generate particles with surface and bulk crystal disorder. An intriguing aspect of the generated crystal disorder is its evolution and repercussion on the physical- and chemical stabilities of drugs. In this review, we firstly examine the existing literature on crystal disorder and its implications on solid-state stability of pharmaceuticals. Secondly, we discuss the key aspects related to the generation and evolution of crystal disorder, dynamics of the disordered/amorphous phase, analytical techniques to measure/quantify them, and approaches to model the disordering propensity from first principles. The main objective of this compilation is to provide special impetus to predict or model the chemical degradation(s) resulting from processing-induced manifestation in bulk solid manufacturing. Finally, a generic workflow is proposed that can be useful to investigate the relevance of crystal disorder on the degradation of pharmaceuticals during stability studies. The present review will cater to the requirements for developing physically- and chemically stable drugs, thereby enabling early and rational decision-making during candidate screening and in assessing degradation risks associated with formulations and processing.
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Affiliation(s)
- Jayant Iyer
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria
| | | | - Dattatray Modhave
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria
| | - Amrit Paudel
- Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria; Graz University of Technology, Institute of Process and Particle Engineering, Graz Austria.
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Bagwan NUS, Sheokand S, Kaur A, Dubey G, Puri V, Bharatam PV, Bansal AK. Role of surface molecular environment and amorphous content in moisture sorption behavior of milled Terbutaline Sulphate. Eur J Pharm Sci 2021; 161:105782. [PMID: 33675911 DOI: 10.1016/j.ejps.2021.105782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/12/2021] [Accepted: 02/24/2021] [Indexed: 11/26/2022]
Abstract
Milling may cause undesired changes in crystal topology, due to exposure of new facets, their corresponding functional groups and surface amorphization. This study investigated effect of milling induced surface amorphous content and chemical environment on moisture sorption behavior of a model hydrophilic drug, Terbutaline Sulphate (TBS). A Dynamic Vapor Sorption (DVS) based analytical method was developed to detect amorphous content, with LOD and LOQ of 0.41% and 1.24%w/w, respectively. The calibration curve gave a linear regression of 0.999 in a concentration range of 0-16.36%w/w amorphous content plotted against surface area normalized % weight change, due to moisture sorption. TBS was milled using air jet mill at 8 Bars for 3 cycles (D90- 3.46µm) and analyzed using the validated DVS method prior to and post conditioning. The moisture sorption was higher in case of milled unconditioned TBS. Molecular Dynamics Simulation (MDS) was performed to identify the cause for increased moisture sorption due to altered surface environment or amorphous content. The results implied that the new planes and functional groups exposed on milling had negligible contribution to moisture sorption and the higher moisture sorption in milled unconditioned TBS was due to surface amorphization. Conditioning under elevated humidity recrystallized the milling-induced surface amorphous content and led to decreased moisture sorption in milled conditioned TBS.
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Affiliation(s)
- Noor Ul Saba Bagwan
- Solid State Pharmaceutics Lab, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S Nagar, Mohali, Punjab, 160 062, India
| | - Sneha Sheokand
- Biocon Bristol Myers Squibb Research & Development Center (BBRC) Syngene, Bangalore, India
| | - Amanpreet Kaur
- Solid State Pharmaceutics Lab, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S Nagar, Mohali, Punjab, 160 062, India
| | - Gurudutt Dubey
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S Nagar, Mohali, Punjab, 160 062, India
| | - Vibha Puri
- Bristol Myers Squibb, 556 Morris Avenue, NJ 07901, USA.
| | - Prasad V Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S Nagar, Mohali, Punjab, 160 062, India.
| | - Arvind Kumar Bansal
- Solid State Pharmaceutics Lab, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S Nagar, Mohali, Punjab, 160 062, India.
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Duralliu A, Matejtschuk P, Williams DR. Humidity induced collapse in freeze dried cakes: A direct visualization study using DVS. Eur J Pharm Biopharm 2018; 127:29-36. [DOI: 10.1016/j.ejpb.2018.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/02/2018] [Accepted: 02/02/2018] [Indexed: 11/17/2022]
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Pozzoli M, Traini D, Young PM, Sukkar MB, Sonvico F. Development of a Soluplus budesonide freeze-dried powder for nasal drug delivery. Drug Dev Ind Pharm 2017; 43:1510-1518. [DOI: 10.1080/03639045.2017.1321659] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Michele Pozzoli
- Graduate School of Health – Pharmacy, University of Technology Sydney, Ultimo, New South Wales, Australia
- Respiratory Technology, The Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, University of Sydney, Glebe, New South Wales, Australia
| | - Daniela Traini
- Respiratory Technology, The Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, University of Sydney, Glebe, New South Wales, Australia
| | - Paul M. Young
- Respiratory Technology, The Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, University of Sydney, Glebe, New South Wales, Australia
| | - Maria B. Sukkar
- Graduate School of Health – Pharmacy, University of Technology Sydney, Ultimo, New South Wales, Australia
| | - Fabio Sonvico
- Graduate School of Health – Pharmacy, University of Technology Sydney, Ultimo, New South Wales, Australia
- Department of Pharmacy, University of Parma, Parma, Italy
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Sheokand S, Modi SR, Bansal AK. Quantification of low levels of amorphous content in crystalline celecoxib using dynamic vapor sorption (DVS). Eur J Pharm Biopharm 2016; 102:77-86. [DOI: 10.1016/j.ejpb.2016.03.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 01/16/2016] [Accepted: 03/03/2016] [Indexed: 11/25/2022]
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