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Lehmann J, Agel MR, Engelhardt KH, Pinnapireddy SR, Agel S, Duse L, Preis E, Wojcik M, Bakowsky U. Improvement of Pulmonary Photodynamic Therapy: Nebulisation of Curcumin-Loaded Tetraether Liposomes. Pharmaceutics 2021; 13:pharmaceutics13081243. [PMID: 34452205 PMCID: PMC8397990 DOI: 10.3390/pharmaceutics13081243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/31/2021] [Accepted: 08/05/2021] [Indexed: 12/13/2022] Open
Abstract
Lung cancer is one of the most common causes for a high number of cancer related mortalities worldwide. Therefore, it is important to improve the therapy by finding new targets and developing convenient therapies. One of these novel non-invasive strategies is the combination of pulmonary delivered tetraether liposomes and photodynamic therapy. In this study, liposomal model formulations containing the photosensitiser curcumin were nebulised via two different technologies, vibrating-mesh nebulisation and air-jet nebulisation, and compared with each other. Particle size and ζ-potential of the liposomes were investigated using dynamic light scattering and laser Doppler anemometry, respectively. Furthermore, atomic force microscopy and transmission electron microscopy were used to determine the morphological characteristics. Using a twin glass impinger, suitable aerodynamic properties were observed, with the fine particle fraction of the aerosols being ≤62.7 ± 1.6%. In vitro irradiation experiments on lung carcinoma cells (A549) revealed an excellent cytotoxic response of the nebulised liposomes in which the stabilisation of the lipid bilayer was the determining factor. Internalisation of nebulised curcumin-loaded liposomes was visualised utilising confocal laser scanning microscopy. Based on these results, the pulmonary application of curcumin-loaded tetraether liposomes can be considered as a promising approach for the photodynamic therapy against lung cancer.
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Affiliation(s)
- Jennifer Lehmann
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Michael R. Agel
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Konrad H. Engelhardt
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Shashank R. Pinnapireddy
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Sabine Agel
- Imaging Unit, Biomedical Research Center (BFS), University of Giessen, Schubertstr. 81, 35392 Giessen, Germany;
| | - Lili Duse
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Eduard Preis
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Matthias Wojcik
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany; (J.L.); (M.R.A.); (K.H.E.); (S.R.P.); (L.D.); (E.P.); (M.W.)
- Correspondence:
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Newman SP, Chan HK. In vitro-in vivo correlations (IVIVCs) of deposition for drugs given by oral inhalation. Adv Drug Deliv Rev 2020; 167:135-147. [PMID: 32593641 DOI: 10.1016/j.addr.2020.06.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 06/01/2020] [Accepted: 06/23/2020] [Indexed: 12/30/2022]
Abstract
Conventional in vitro tests to assess the aerodynamic particle size distribution (APSD) from inhaler devices use simple right-angle inlets ("mouth-throats", MTs) to cascade impactors, and air is drawn through the system at a fixed flow for a fixed time. Since this arrangement differs substantially from both human oropharyngeal airway anatomy and the patterns of air flow when patients use inhalers, the ability of in vitro tests to predict in vivo deposition of pharmaceutical aerosols has been limited. MTs that mimic the human anatomy, coupled with simulated breathing patterns, have yielded estimates of lung dose from in vitro data that closely match those from in vivo gamma scintigraphic or pharmacokinetic studies. However, different models of MTs do not always yield identical data, and selection of an anatomical MT and representative inhalation profiles remains challenging. Improved in vitro - in vivo correlations (IVIVCs) for inhaled drug products could permit increased reliance on in vitro data when developing new inhaled drug products, and could ultimately result in accelerated drug product development, together with reduced research and development spending.
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Chen Y, Du S, Zhang Z, He W, Lu E, Wang R, Sha X, Ma Y. Compatible Stability and Aerosol Characteristics of Atrovent ® (Ipratropium Bromide) Mixed with Salbutamol Sulfate, Terbutaline Sulfate, Budesonide, and Acetylcysteine. Pharmaceutics 2020; 12:pharmaceutics12080776. [PMID: 32824123 PMCID: PMC7466038 DOI: 10.3390/pharmaceutics12080776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/15/2022] Open
Abstract
(1) Background: It is common practice in the treatment of respiratory diseases to mix different inhalation solutions for simultaneous inhalation. At present, a small number of studies have been published that evaluate the physicochemical compatibility and aerosol characteristics of different inhalation medications. However, none of them studied Atrovent®. Our work aims to address the lack of studies on Atrovent®. (2) Methods: Portions of admixtures were withdrawn at certain time intervals after mixing and were tested by pH determination, osmolarity measurement, and high-performance liquid chromatography (HPLC) assay of each active ingredient as measures of physicochemical compatibility. The geometrical and aerosol particle size distribution, active drug delivery rate, and total active drug delivered were measured to characterize aerosol behaviors. (3) Results: During the testing time, no significant variation was found in the pH value, the osmotic pressure, or the active components of admixtures. With the increase in nebulization volume after mixing, fine particle dose (FPD) and total active drug delivered showed statistically significant improvements, while the active drug delivery rate decreased compared to the single-drug preparations. (4) Conclusions: These results endorse the physicochemical compatibility of Atrovent® over 1 h when mixed with other inhalation medications. Considering aerosol characteristics, simultaneous inhalation is more efficient.
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Affiliation(s)
- Yiting Chen
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
| | - Shilin Du
- Department of Emergency Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China;
| | - Zhirui Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
| | - Wenxiu He
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
| | - Enhao Lu
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
| | - Rui Wang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
| | - Xianyi Sha
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai 201203, China; (Y.C.); (Z.Z.); (W.H.); (E.L.); (R.W.)
- The Institutes of Integrative Medicine of Fudan University, Shanghai 200040, China
- Correspondence: (X.S.); (Y.M.); Tel.: +86-21-51980072 (X.S.)
| | - Yan Ma
- Shanghai Mental Health Center, School of Medicine, Shanghai Jiaotong University, Shanghai 200030, China
- Correspondence: (X.S.); (Y.M.); Tel.: +86-21-51980072 (X.S.)
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Sala V, Murabito A, Ghigo A. Inhaled Biologicals for the Treatment of Cystic Fibrosis. ACTA ACUST UNITED AC 2020; 13:19-26. [PMID: 30318010 PMCID: PMC6751348 DOI: 10.2174/1872213x12666181012101444] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 10/09/2018] [Accepted: 10/09/2018] [Indexed: 12/20/2022]
Abstract
Background: Cystic Fibrosis (CF), one of the most frequent genetic diseases, is characterized by the production of viscous mucus in several organs. In the lungs, mucus clogs the airways and traps bacteria, leading to recurrent/resistant infections and lung damage. For cystic fibrosis patients, respiratory failure is still lethal in early adulthood since available treatments display incomplete efficacy. Objective: The objective of this review is to extend the current knowledge in the field of available treat-ments for cystic fibrosis. A special focus has been given to inhaled peptide-based drugs. Methods: The current review is based on recent and/or relevant literature and patents already available in various scientific databases, which include PubMed, PubMed Central, Patentscope and Science Direct. The information obtained through these diverse databases is compiled, critically interpreted and presented in the current study. An in-depth but not systematic approach to the specific research question has been adopted. Results: Recently, peptides have been proposed as possible pharmacologic agents for the treatment of respiratory diseases. Of note, peptides are suitable to be administered by inhalation to maximize efficacy and reduce systemic side effects. Moreover, innovative delivery carriers have been developed for drug administration through inhalation, allowing not only protection against proteolysis, but also a prolonged and controlled release. Conclusion: Here, we summarize newly patented peptides that have been developed in the last few years and advanced technologies for inhaled drug delivery to treat cystic fibrosis.
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Affiliation(s)
- Valentina Sala
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy.,S.C. Medicina d'Urgenza, A.O.U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Alessandra Murabito
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Alessandra Ghigo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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Longest W, Spence B, Hindle M. Devices for Improved Delivery of Nebulized Pharmaceutical Aerosols to the Lungs. J Aerosol Med Pulm Drug Deliv 2019; 32:317-339. [PMID: 31287369 DOI: 10.1089/jamp.2018.1508] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Nebulizers have a number of advantages for the delivery of inhaled pharmaceutical aerosols, including the use of aqueous formulations and the ability to deliver process-sensitive proteins, peptides, and biological medications. A frequent disadvantage of nebulized aerosols is poor lung delivery efficiency, which wastes valuable medications, increases delivery times, and may increase side effects of the medication. A focus of previous development efforts and previous nebulizer reviews, has been an improvement of the underlying nebulization technology controlling the breakup of a liquid into droplets. However, for a given nebulization technology, a wide range of secondary devices and strategies can be implemented to significantly improve lung delivery efficiency of the aerosol. This review focuses on secondary devices and technologies that can be implemented to improve the lung delivery efficiency of nebulized aerosols and potentially target the region of drug delivery within the lungs. These secondary devices may (1) modify the aerosol size distribution, (2) synchronize aerosol delivery with inhalation, (3) reduce system depositional losses at connection points, (4) improve the patient interface, or (5) guide patient inhalation. The development of these devices and technologies is also discussed, which often includes the use of computational fluid dynamic simulations, three-dimensional printing and rapid prototype device and airway model construction, realistic in vitro experiments, and in vivo analysis. Of the devices reviewed, the implementation of streamlined components may be the most direct and lowest cost approach to enhance aerosol delivery efficiency within nonambulatory nebulizer systems. For applications involving high-dose medications or precise dose administration, the inclusion of active devices to control aerosol size, guide inhalation, and synchronize delivery with inhalation hold considerable promise.
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Affiliation(s)
- Worth Longest
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia.,Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia
| | - Benjamin Spence
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - Michael Hindle
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia
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D'Urzo A, Chapman KR, Donohue JF, Kardos P, Maleki-Yazdi MR, Price D. Inhaler Devices for Delivery of LABA/LAMA Fixed-Dose Combinations in Patients with COPD. Pulm Ther 2019; 5:23-41. [PMID: 32026426 PMCID: PMC6967354 DOI: 10.1007/s41030-019-0090-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Indexed: 02/07/2023] Open
Abstract
Inhaled fixed-dose combinations (FDCs) of a long-acting β-agonist (LABA) and a long-acting muscarinic antagonist (LAMA) have become the cornerstone for the maintenance treatment of symptomatic COPD patients. In this regard, global COPD treatment guidelines have recognized the importance of inhaler devices as integral contributors to the effectiveness of LABA/LAMA FDCs and recommend regular assessment of inhaler device use by the patients in order to improve long-term clinical outcomes. Optimal disease control is also highly dependent upon patient preferences and adherence to inhaler devices. This review objectively examines and compares the major inhaler devices used to deliver different LABA/LAMA FDCs, discusses the inhaler device characteristics that determine drug deposition in the airways, real-life preference for inhaler devices, and handling of inhaler devices that impact the results of the long-term management of COPD. The introduction of new LABA/LAMA FDCs, new inhaler devices, and more clinical studies have created confusion among physicians in choosing the optimal inhaled therapy for COPD patients; in this context, this review attempts to provide an evidence-based framework for informed decision-making with a particular focus on the inhaler devices.Funding. The preparation of this manuscript was funded by Novartis Pharma AG.
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Affiliation(s)
- Anthony D'Urzo
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada.
| | - Kenneth R Chapman
- Asthma and Airway Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - James F Donohue
- Pulmonary Diseases and Critical Care Medicine, Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Peter Kardos
- Group Practice and Centre for Allergy, Respiratory and Sleep Medicine, Red Cross Maingau Hospital, Frankfurt, Germany
| | - M Reza Maleki-Yazdi
- Division of Respiratory Medicine, Women's College Hospital, University of Toronto, Toronto, ON, Canada
| | - David Price
- Centre of Academic Primary Care, University of Aberdeen, Aberdeen, UK
- Observational and Pragmatic Research Institute, Singapore, Singapore
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