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Racaniello GF, Silvestri T, Pistone M, D'Amico V, Arduino I, Denora N, Lopedota AA. Innovative Pharmaceutical Techniques for Paediatric Dosage Forms: A Systematic Review on 3D Printing, Prilling/Vibration and Microfluidic Platform. J Pharm Sci 2024; 113:1726-1748. [PMID: 38582283 DOI: 10.1016/j.xphs.2024.04.001] [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: 11/16/2023] [Revised: 04/01/2024] [Accepted: 04/01/2024] [Indexed: 04/08/2024]
Abstract
The production of paediatric pharmaceutical forms represents a unique challenge within the pharmaceutical industry. The primary goal of these formulations is to ensure therapeutic efficacy, safety, and tolerability in paediatric patients, who have specific physiological needs and characteristics. In recent years, there has been a significant increase in attention towards this area, driven by the need to improve drug administration to children and ensure optimal and specific treatments. Technological innovation has played a crucial role in meeting these requirements, opening new frontiers in the design and production of paediatric pharmaceutical forms. In particular, three emerging technologies have garnered considerable interest and attention within the scientific and industrial community: 3D printing, prilling/vibration, and microfluidics. These technologies offer advanced approaches for the design, production, and customization of paediatric pharmaceutical forms, allowing for more precise dosage modulation, improved solubility, and greater drug acceptability. In this review, we delve into these cutting-edge technologies and their impact on the production of paediatric pharmaceutical forms. We analyse their potential, associated challenges, and recent developments, providing a comprehensive overview of the opportunities that these innovative methodologies offer to the pharmaceutical sector. We examine different pharmaceutical forms generated using these techniques, evaluating their advantages and disadvantages.
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Affiliation(s)
| | - Teresa Silvestri
- Department of Pharmacy, University of Naples Federico II, D. Montesano St. 49, 80131 Naples, Italy
| | - Monica Pistone
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, 70125, Bari, Italy
| | - Vita D'Amico
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, 70125, Bari, Italy
| | - Ilaria Arduino
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, 70125, Bari, Italy
| | - Nunzio Denora
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, 70125, Bari, Italy.
| | - Angela Assunta Lopedota
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, 70125, Bari, Italy
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Bacterial Contamination of Inhalation Chambers Used for Cats and Dogs with Chronic Airway Diseases. Pathogens 2023; 12:pathogens12020275. [PMID: 36839547 PMCID: PMC9961833 DOI: 10.3390/pathogens12020275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023] Open
Abstract
Inhalation chambers (ICs) are regularly used in veterinary medicine for the inhalative treatment of chronic respiratory diseases in dogs and cats. Since therapy is usually required lifelong and daily, devices are frequently in use. The aim of this study was to identify bacterial contamination of ICs used for cats and dogs in relation to the applied cleaning measures. Swabs from ICs of 66 cats and 19 dogs with chronic airway diseases were obtained using a standardized protocol and subsequently cultured. A questionnaire was completed by the pet owners regarding the history of their pet's illness and applied device cleaning measures. Overall, 64% (54/86) of the ICs were found to be contaminated; the mask was significantly (p < 0.001) more often contaminated than other device parts. Most cultured bacteria were environmental contaminants; however, some harbored pathogenic potential. Cleaning frequency and method did not significantly influence the presence of contamination. Bacterial contamination of ICs, used for cats and dogs, is common but is not significantly influenced by the type or frequency of cleaning. To avoid potential infection by opportunistic bacteria, the instruction of pet owners regarding the maintenance of the ICs is recommended.
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Ke WR, Chang RYK, Chan HK. Engineering the right formulation for enhanced drug delivery. Adv Drug Deliv Rev 2022; 191:114561. [PMID: 36191861 DOI: 10.1016/j.addr.2022.114561] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/30/2022] [Accepted: 09/24/2022] [Indexed: 01/24/2023]
Abstract
Dry powder inhalers (DPIs) can be used with a wide range of drugs such as small molecules and biologics and offer several advantages for inhaled therapy. Early DPI products were intended to treat asthma and lung chronic inflammatory disease by administering low-dose, high-potency drugs blended with lactose carrier particles. The use of lactose blends is still the most common approach to aid powder flowability and dose metering in DPI products. However, this conventional approach may not meet the high demand for formulation physical stability, aerosolisation performance, and bioavailability. To overcome these issues, innovative techniques coupled with modification of the traditional methods have been explored to engineer particles for enhanced drug delivery. Different particle engineering techniques have been utilised depending on the types of the active pharmaceutical ingredient (e.g., small molecules, peptides, proteins, cells) and the inhaled dose. This review discusses the challenges of formulating DPI formulations of low-dose and high-dose small molecule drugs, and biologics, followed by recent and emerging particle engineering strategies utilised in developing the right inhalable powder formulations for enhanced drug delivery.
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Affiliation(s)
- Wei-Ren Ke
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Rachel Yoon Kyung Chang
- Advanced Drug Delivery Group, 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
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Klenk FK, Schulz B. [Inhalation therapy in dogs and cats with chronic lower airway disease - a literature review]. TIERARZTLICHE PRAXIS. AUSGABE K, KLEINTIERE/HEIMTIERE 2022; 50:279-292. [PMID: 36067770 DOI: 10.1055/a-1910-3327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chronic respiratory diseases are prevalent medical conditions in dogs and cats requiring lifelong treatment. Mainstay of therapy for chronic inflammatory respiratory diseases are glucocorticoids. Concurrent treatment with bronchodilators may be necessary to control clinical signs sufficiently. Due to the successful use in people as well as subsequent reduction of adverse effects of long-term glucocorticoid therapy, inhalative therapy has become increasingly important in veterinary medicine as well. Primarily spacers or valved holding chambers, in combination with metered dose inhalers, are used in dogs and cats. The technical properties of these devices, as well as their use and maintenance will be described in the following article. Furthermore, the existing literature regarding efficacy of inhalative medications for therapy of chronic inflammatory airway diseases in dogs and cats will be summarized.
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Matuszak M, Ochowiak M, Włodarczak S, Krupińska A, Doligalski M. State-of-the-Art Review of The Application and Development of Various Methods of Aerosol Therapy. Int J Pharm 2021; 614:121432. [PMID: 34971755 DOI: 10.1016/j.ijpharm.2021.121432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/09/2021] [Accepted: 12/23/2021] [Indexed: 12/23/2022]
Abstract
Aerosol therapy is a rapidly developing field of science. Due to a number of advantages, the administration of drugs to the body with the use of aerosol therapy is becoming more and more popular. Spraying drugs into the patient's lungs has a significant advantage over other methods of administering drugs to the body, including injection and oral methods. In order to conduct proper and effective aerosol therapy, it is necessary to become familiar with the basic principles and applications of aerosol therapy under various conditions. The effectiveness of inhalation depends on many factors, but most of all on: the physicochemical properties of the sprayed system, the design of the medical inhaler and its correct application, the dynamics of inhalation (i.e. the frequency of breathing and the volume of inhaled air). It is worth emphasizing that respiratory system diseases are one of the most frequently occurring and fastest growing diseases in the world. Accordingly, in recent years, a significant increase in the number of new spraying devices and pharmaceutical drugs for spraying has appeared on the market. It should also be remembered that the process of spraying a liquid is a complicated and complex process, and its efficiency is very often characterized by the use of micro- and macro parameters (including average droplet diameters or the spectrum of droplet diameter distribution). In order to determine the effectiveness of the atomization process and in the delivery of drugs to the patient's respiratory tract, the analysis of the size of the generated aerosol droplets is most often performed. Based on the proposed literature review, it has been shown that many papers dealt with the issues related to aerosol therapy, the selection of an appropriate spraying device, the possibility of modifying the spraying devices in order to increase the effectiveness of inhalation, and the possibility of occurrence of certain discrepancies resulting from the use of various measurement methods to determine the characteristics of the generated aerosol. The literature review presented in the paper was prepared in order to better understand the spraying process. Moreover, it can be helpful in choosing the right medical inhaler for a given liquid with specific rheological properties. The experimental data contained in this study are of great cognitive importance and may be of interest to entities involved in pharmaceutical product engineering (in particular in the case of the production of drugs containing liquids with complex rheological properties).
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Affiliation(s)
- M Matuszak
- Faculty of Chemical Technology, Poznan University of Technology, Institute of Chemical Technology and Engineering, 4 Berdychowo Street, 60-965 Poznan, Poland.
| | - M Ochowiak
- Faculty of Chemical Technology, Poznan University of Technology, Institute of Chemical Technology and Engineering, 4 Berdychowo Street, 60-965 Poznan, Poland
| | - S Włodarczak
- Faculty of Chemical Technology, Poznan University of Technology, Institute of Chemical Technology and Engineering, 4 Berdychowo Street, 60-965 Poznan, Poland
| | - A Krupińska
- Faculty of Chemical Technology, Poznan University of Technology, Institute of Chemical Technology and Engineering, 4 Berdychowo Street, 60-965 Poznan, Poland
| | - M Doligalski
- Faculty of Computer, Electrical and Control Engineering, University of Zielona Góra, 4a Szafrana Street, 65-516 Zielona Góra, Poland
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Dimitri P, Pignataro V, Lupo M, Bonifazi D, Henke M, Musazzi UM, Ernst F, Minghetti P, Redaelli DF, Antimisiaris SG, Migliaccio G, Bonifazi F, Marciani L, Courtenay AJ, Denora N, Lopedota A. Medical Device Development for Children and Young People-Reviewing the Challenges and Opportunities. Pharmaceutics 2021; 13:pharmaceutics13122178. [PMID: 34959459 PMCID: PMC8706877 DOI: 10.3390/pharmaceutics13122178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/25/2021] [Accepted: 12/02/2021] [Indexed: 02/07/2023] Open
Abstract
Development of specific medical devices (MDs) is required to meet the healthcare needs of children and young people (CYP). In this context, MD development should address changes in growth and psychosocial maturation, physiology, and pathophysiology, and avoid inappropriate repurposing of adult technologies. Underpinning the development of MD for CYP is the need to ensure MD safety and effectiveness through pediatric MD-specific regulations. Contrary to current perceptions of limited market potential, the global pediatric healthcare market is expected to generate around USD 15,984 million by 2025. There are 1.8 billion young people in the world today; 40% of the global population is under 24, creating significant future healthcare market opportunities. This review highlights a number of technology areas that have led to successful pediatric MD, including 3D printing, advanced materials, drug delivery, and diagnostic imaging. To ensure the targeted development of MD for CYP, collaboration across multiple professional disciplines is required, facilitated by a platform to foster collaboration and drive innovation. The European Pediatric Translational Research Infrastructure (EPTRI) will be established as the European platform to support collaboration, including the life sciences industrial sector, to identify unmet needs in child health and support the development, adoption, and commercialization of pediatric MDs.
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Affiliation(s)
- Paul Dimitri
- Department of Pediatric Endocrinology, Sheffield Children’s NHS Foundation Trust & Sheffield Hallam University, Shefeld S10 2TH, UK;
| | - Valeria Pignataro
- Consorzio per Valutazioni Biologiche e Farmacologiche, Via N. Putignani 178, 70122 Bari, Italy; (V.P.); (D.B.); (G.M.)
| | - Mariangela Lupo
- TEDDY European Network of Excellence for Paediatric Research, Via Luigi Porta 14, 27100 Pavia, Italy;
| | - Donato Bonifazi
- Consorzio per Valutazioni Biologiche e Farmacologiche, Via N. Putignani 178, 70122 Bari, Italy; (V.P.); (D.B.); (G.M.)
| | - Maria Henke
- Institute for Robotics and Cognitive Systems, University of Luebeck, Ratzeburger Allee 160, 23562 Luebeck, Germany; (M.H.); (F.E.)
| | - Umberto M. Musazzi
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via G. Colombo, 20133 Milan, Italy; (U.M.M.); (P.M.)
| | - Floris Ernst
- Institute for Robotics and Cognitive Systems, University of Luebeck, Ratzeburger Allee 160, 23562 Luebeck, Germany; (M.H.); (F.E.)
| | - Paola Minghetti
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Via G. Colombo, 20133 Milan, Italy; (U.M.M.); (P.M.)
| | - Davide F. Redaelli
- Scientific Institute IRCCS E. Medea, Bosisio Parini, 23843 Lecco, Italy;
| | | | - Giovanni Migliaccio
- Consorzio per Valutazioni Biologiche e Farmacologiche, Via N. Putignani 178, 70122 Bari, Italy; (V.P.); (D.B.); (G.M.)
| | - Fedele Bonifazi
- Fondazione per la ricerca farmacologica Gianni Benzionlus, Via Abate Eustasio, 30, 70010 Valenzano, Italy;
| | - Luca Marciani
- Translational Medical Sciences, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Derby Road, Nottingham NG7 2UH, UK;
| | - Aaron J. Courtenay
- School of Pharmacy and Pharmaceutical Sciences, Coleraine Campus, Ulster University, Cromore Road, Coleraine, Co. Londonderry, Northern Ireland BT52 1SA, UK;
| | - Nunzio Denora
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
- Correspondence: (N.D.); (A.L.)
| | - Angela Lopedota
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
- Correspondence: (N.D.); (A.L.)
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Aerosol Particle Transport and Deposition in Upper and Lower Airways of Infant, Child and Adult Human Lungs. ATMOSPHERE 2021. [DOI: 10.3390/atmos12111402] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Understanding transportation and deposition (TD) of aerosol particles in the human respiratory system can help clinical treatment of lung diseases using medicines. The lung airway diameters and the breathing capacity of human lungs normally increase with age until the age of 30. Many studies have analyzed the particle TD in the human lung airways. However, the knowledge of the nanoparticle TD in airways of infants and children with varying inhalation flow rates is still limited in the literature. This study investigates nanoparticle (5 nm ≤ dp ≤ 500 nm) TD in the lungs of infants, children, and adults. The inhalation air flow rates corresponding to three ages are considered as Qin=3.22 L/min (infant), 8.09 L/min (Child), and Qin=14 L/min (adult). It is found that less particles are deposited in upper lung airways (G0–G3) than in lower airways (G12–G15) in the lungs of all the three age groups. The results suggest that the particle deposition efficiency in lung airways increases with the decrease of particle size due to the Brownian diffusion mechanism. About 3% of 500 nm particles are deposited in airways G12–G15 for the three age groups. As the particle size is decreased to 5 nm, the deposition rate in G12–G15 is increased to over 95%. The present findings can help medical therapy by individually simulating the distribution of drug-aerosol for the patient-specific lung.
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Vig PS, Lim JY, Lee RWL, Huang H, Tan XH, Lim WQ, Lim MBXY, Lee ASI, Chiam M, Lim C, Baral VR, Krishna LKR. Parental bereavement - impact of death of neonates and children under 12 years on personhood of parents: a systematic scoping review. BMC Palliat Care 2021; 20:136. [PMID: 34481491 PMCID: PMC8418708 DOI: 10.1186/s12904-021-00831-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Losing a child tragically impacts the well-being and functioning of parents. With these effects extending beyond emotional, physical morbidity and compromising self-perceptions, appropriate, longitudinal, timely and personalised support is key to effective care of bereaved parents. However, in the absence of a comprehensive understanding of parental bereavement, effective support of bereaved parents remains suboptimal. To address this gap, we scrutinise prevailing data on the effects of a child's death, aged 0-12 years, through the lens of the Ring Theory of Personhood (RToP). METHODS To study prevailing accounts of bereaved parents following the death of a child, we adopt Krishna's Systematic Evidence Based Approach (SEBA) to structure our Systematic Scoping Review (SSR in SEBA). RESULTS Three thousand seventy-four abstracts were reviewed, 160 full text articles were evaluated, and 111 articles were included and analysed using thematic and content analysis. Four themes/categories were identified relating to the four rings of the RToP. Findings reveal that static concepts of protective and risk factors for grief are misplaced and that the support of healthcare professionals is key to assisting bereaved parents. CONCLUSION In the absence of consistent support of bereaved parents, this study highlights the need for effective training of healthcare professionals, beginning with an appreciation that every aspect of an individual parent's personhood is impacted by the loss of their child. Acknowledging grief as a complex, evolving and personalised process subjected to parental characteristics, settings, context and available support, this SSR in SEBA calls attention to effective nurturing of the relationship between parents and healthcare professionals, and suggests use of the RToP to assess and direct personalised, timely, specific support of parents in evolving conditions. We believe the findings of this review also call for further studies to support healthcare professionals as they journey with bereaved parents.
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Affiliation(s)
- Prachi Simran Vig
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Jia Yin Lim
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Randal Wei Liang Lee
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Huixin Huang
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Xiu Hui Tan
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Wei Qiang Lim
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Marie Bernadette Xin Yi Lim
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Alexia Sze Inn Lee
- Division of Cancer Education, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Min Chiam
- Division of Cancer Education, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
| | - Crystal Lim
- Medical Social Services, Singapore General Hospital, Outram Road, Block 3 Level 1, Singapore, 169608 Singapore
- Duke-NUS Medical School, 8 College Road, Singapore, 169857 Singapore
| | - Vijayendra Ranjan Baral
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Duke-NUS Medical School, 8 College Road, Singapore, 169857 Singapore
- Division of Neonatal and Developmental Medicine, Singapore General Hospital, Outram Road, Block 5 Level 4, Singapore, 169608 Singapore
| | - Lalit Kumar Radha Krishna
- Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road NUHS Tower Block, Level 11, Singapore, 119228 Singapore
- Division of Palliative and Supportive Care, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
- Division of Cancer Education, National Cancer Centre Singapore, 11 Hospital Crescent, Singapore, 169610 Singapore
- Duke-NUS Medical School, 8 College Road, Singapore, 169857 Singapore
- Palliative Care Institute Liverpool, Academic Palliative & End of Life Care Centre, University of Liverpool, Liverpool, UK
- Centre for Biomedical Ethics, National University of Singapore, Blk MD11, 10 Medical Drive, #02-03, Singapore, 117597 Singapore
- PalC, The Palliative Care Centre for Excellence in Research and Education, PalC c/o Dover Park Hospice, 10 Jalan Tan Tock Seng, Singapore, 308436 Singapore
- Cancer Research Centre, University of Liverpool, 200 London Rd, Liverpool, L3 9TA UK
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Artzy-Schnirman A, Arber Raviv S, Doppelt Flikshtain O, Shklover J, Korin N, Gross A, Mizrahi B, Schroeder A, Sznitman J. Advanced human-relevant in vitro pulmonary platforms for respiratory therapeutics. Adv Drug Deliv Rev 2021; 176:113901. [PMID: 34331989 PMCID: PMC7611797 DOI: 10.1016/j.addr.2021.113901] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 07/20/2021] [Accepted: 07/24/2021] [Indexed: 02/08/2023]
Abstract
Over the past years, advanced in vitro pulmonary platforms have witnessed exciting developments that are pushing beyond traditional preclinical cell culture methods. Here, we discuss ongoing efforts in bridging the gap between in vivo and in vitro interfaces and identify some of the bioengineering challenges that lie ahead in delivering new generations of human-relevant in vitro pulmonary platforms. Notably, in vitro strategies using foremost lung-on-chips and biocompatible "soft" membranes have focused on platforms that emphasize phenotypical endpoints recapitulating key physiological and cellular functions. We review some of the most recent in vitro studies underlining seminal therapeutic screens and translational applications and open our discussion to promising avenues of pulmonary therapeutic exploration focusing on liposomes. Undeniably, there still remains a recognized trade-off between the physiological and biological complexity of these in vitro lung models and their ability to deliver assays with throughput capabilities. The upcoming years are thus anticipated to see further developments in broadening the applicability of such in vitro systems and accelerating therapeutic exploration for drug discovery and translational medicine in treating respiratory disorders.
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Affiliation(s)
- Arbel Artzy-Schnirman
- Department of Biomedical, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Sivan Arber Raviv
- Department of Chemical, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | | | - Jeny Shklover
- Department of Chemical, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Netanel Korin
- Department of Biomedical, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Adi Gross
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Boaz Mizrahi
- Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Avi Schroeder
- Department of Chemical, Technion - Israel Institute of Technology, 32000 Haifa, Israel
| | - Josué Sznitman
- Department of Biomedical, Technion - Israel Institute of Technology, 32000 Haifa, Israel.
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A whole lung in silico model to estimate age dependent particle dosimetry. Sci Rep 2021; 11:11180. [PMID: 34045500 PMCID: PMC8159973 DOI: 10.1038/s41598-021-90509-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 05/12/2021] [Indexed: 11/08/2022] Open
Abstract
Anatomical and physiological changes alter airflow characteristics and aerosol distribution in the developing lung. Correlation between age and aerosol dosimetry is needed, specifically because youth are more susceptible to medication side effects. In this study, we estimate aerosol dosages (particle diameters of 1, 3, and 5 [Formula: see text]m) in a 3 month-old infant, a 6 year-old child, and a 36 year-old adult by performing whole lung subject-specific particle simulations throughout respiration. For 3 [Formula: see text]m diameter particles we estimate total deposition as 88, 73, and [Formula: see text] and the conducting versus respiratory deposition ratios as 4.0, 0.5, and 0.4 for the infant, child, and adult, respectively. Due to their lower tidal volumes and functional residual capacities the deposited mass is smaller while the tissue concentrations are larger in the infant and child subjects, compared to the adult. Furthermore, we find that dose cannot be predicted by simply scaling by tidal volumes. These results highlight the need for additional clinical and computational studies that investigate the efficiency of treatment, while optimizing dosage levels in order to alleviate side effects, in youth.
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Carranza Valencia A, Hirt R, Kampner D, Hiebl A, Tichy A, Rüthemann P, Pagitz M. Comparison of pulmonary deposition of nebulized 99m technetium-diethylenetriamine-pentaacetic acid through 3 inhalation devices in healthy dogs. J Vet Intern Med 2021; 35:1080-1087. [PMID: 33624851 PMCID: PMC7995371 DOI: 10.1111/jvim.16064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 01/26/2021] [Accepted: 02/02/2021] [Indexed: 11/29/2022] Open
Abstract
Background Inhalation treatment frequently is used in dogs and cats with chronic respiratory disease. Little is known however about the performance of delivery devices and the distribution of aerosolized drugs in the lower airways. Objective To assess the performance of 3 delivery devices and the impact of variable durations of inhalation on the pulmonary and extrapulmonary deposition of nebulized 99mtechnetium‐diethylenetriamine‐pentaacetic acid (99mTc‐DTPA). Animals Ten university‐owned healthy Beagle dogs. Methods Prospective crossover study. Dogs inhaled the radiopharmaceutical for 5 minutes either through the Aerodawg spacer with a custom‐made nose‐muzzle mask, the Aerochamber spacer with the same mask, or the Aerodawg spacer with its original nose mask. In addition, dogs inhaled for 1 and 3 minutes through the second device. Images were obtained by 2‐dimensional planar scintigraphy. Radiopharmaceutical uptake was calculated as an absolute value and as a fraction of the registered dose in the whole body. Results Mean (±SD) lung deposition for the 3 devices was 9.2% (±5.0), 11.4% (±4.9), and 9.3% (±4.6), respectively. Differences were not statistically significant. Uptake in pulmonary and extrapulmonary tissues was significantly lower after 1‐minute nebulization, but the mean pulmonary/extrapulmonary deposition ratio (0.38 ± 0.27) was significantly higher than after 5‐minute nebulization (0.16 ± 0.1; P = .03). No significant differences were detected after 3‐ and 5‐minute nebulization. Conclusion and Clinical Importance The performance of a pediatric spacer with a custom‐made mask is comparable to that of a veterinary device. One‐minute nebulization provides lower pulmonary uptake but achieves a better pulmonary/extrapulmonary deposition ratio than does 5‐minute nebulization.
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Affiliation(s)
- Alejandra Carranza Valencia
- Department for Companion Animals and Horses, Clinic for Internal Medicine, University of Veterinary Medicine, Vienna, Austria
| | - Reinhard Hirt
- Department for Companion Animals and Horses, Clinic for Internal Medicine, University of Veterinary Medicine, Vienna, Austria
| | - Doris Kampner
- Department for Companion Animals and Horses, Clinic for Internal Medicine, University of Veterinary Medicine, Vienna, Austria
| | - Andreas Hiebl
- Department for Companion Animals and Horses, Clinic for Internal Medicine, University of Veterinary Medicine, Vienna, Austria
| | - Alexander Tichy
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Peter Rüthemann
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland
| | - Maximilian Pagitz
- Department for Companion Animals and Horses, Clinic for Internal Medicine, University of Veterinary Medicine, Vienna, Austria
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12
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Durak H, Uysal G. The Effect of Cartoon Watching and Distraction Card on Physiologic Parameters and Fear Levels During Inhalation Therapy in Children: A Randomized Controlled Study. J Trop Pediatr 2021; 67:6178989. [PMID: 33742204 DOI: 10.1093/tropej/fmab018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE The study was conducted as a randomized controlled study to investigate the effect of cartoon watching and distraction cards on physiologic parameters and fear levels in children with acute bronchitis in the emergency department. METHODS Ninety-nine children with acute bronchitis aged 3-6 years were randomized in the emergency department. The study was conducted with three groups: cartoon group, distraction card group, and the control group. Data were collected using a follow-up form and the Children's Fear Scale. RESULTS The difference between the mean pulse rates of the groups evaluated by an observer nurse was found to be statistically significant. The pulse rates of the cartoon and distraction card groups were lower than in the control group during inhalation therapy (p < 0.05). The difference between the mean fear scores in the cartoon and control groups as evaluated by the observer nurse and the accompanying parent was found to be statistically significant during after inhalation therapy (p < 0.01). CONCLUSION It was observed that watching cartoons during inhalation therapy was more effective in reducing the level of fear in children that distraction card.
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Affiliation(s)
- Hülya Durak
- Child Emergency Service, Kocaeli University Research and Practice Hospital, Izmit, Turkey
| | - Gülzade Uysal
- Faculty of Health Sciences, Istanbul Okan University, Istanbul, Turkey
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13
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Chang RYK, Chen L, Chen D, Chan HK. Overcoming challenges for development of amorphous powders for inhalation. Expert Opin Drug Deliv 2020; 17:1583-1595. [DOI: 10.1080/17425247.2020.1813105] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rachel Yoon Kyung Chang
- Advanced Drug Delivery Group, Sydney Pharmacy School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Lan Chen
- Hangzhou Chance Pharmaceuticals, Hangzhou, China
| | - Donghao Chen
- Hangzhou Chance Pharmaceuticals, Hangzhou, China
| | - Hak-Kim Chan
- Advanced Drug Delivery Group, Sydney Pharmacy School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
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14
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Artzy-Schnirman A, Lehr CM, Sznitman J. Advancing human in vitro pulmonary disease models in preclinical research: opportunities for lung-on-chips. Expert Opin Drug Deliv 2020; 17:621-625. [DOI: 10.1080/17425247.2020.1738380] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Arbel Artzy-Schnirman
- Department of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa, Israel
| | - Claus-Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University, Saarbrücken, Germany
- Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | - Josué Sznitman
- Department of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa, Israel
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15
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Yellepeddi VK, Joseph A, Nance E. Pharmacokinetics of nanotechnology-based formulations in pediatric populations. Adv Drug Deliv Rev 2019; 151-152:44-55. [PMID: 31494124 DOI: 10.1016/j.addr.2019.08.008] [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] [Received: 05/28/2019] [Revised: 07/27/2019] [Accepted: 08/23/2019] [Indexed: 12/11/2022]
Abstract
The development of therapeutics for pediatric use has advanced in the last few decades. However, off-label use of adult medications in pediatrics remains a significant clinical problem. Furthermore, the development of therapeutics for pediatrics is challenged by the lack of pharmacokinetic (PK) data in the pediatric population. To promote the development of therapeutics for pediatrics, the United States Pediatric Formulation Initiative recommended the investigation of nanotechnology-based delivery systems. Therefore, in this review, we provided comprehensive information on the PK of nanotechnology-based formulations from preclinical and clinical studies in pediatrics. Specifically, we discuss the relationship between formulation parameters of nanoformulations and PK of the encapsulated drug in the context of pediatrics. We review nanoformulations that include dendrimers, liposomes, polymeric long-acting injectables (LAIs), nanocrystals, inorganic nanoparticles, polymeric micelles, and protein nanoparticles. In addition, we describe the importance and need of PK modeling and simulation approaches used in predicting PK of nanoformulations for pediatric applications.
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16
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Das P, Nof E, Amirav I, Kassinos SC, Sznitman J. Targeting inhaled aerosol delivery to upper airways in children: Insight from computational fluid dynamics (CFD). PLoS One 2018; 13:e0207711. [PMID: 30458054 PMCID: PMC6245749 DOI: 10.1371/journal.pone.0207711] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/03/2018] [Indexed: 11/28/2022] Open
Abstract
Despite the prevalence of inhalation therapy in the treatment of pediatric respiratory disorders, most prominently asthma, the fraction of inhaled drugs reaching the lungs for maximal efficacy remains adversely low. By and large drug delivery devices and their inhalation guidelines are typically derived from adult studies with child dosages adapted according to body weight. While it has long been recognized that physiological (e.g. airway sizes, breathing maneuvers) and physical transport (e.g. aerosol dynamics) characteristics are critical in governing deposition outcomes, such knowledge has yet to be extensively adapted to younger populations. Motivated by such shortcomings, the present work leverages in a first step in silico computational fluid dynamics (CFD) to explore opportunities for augmenting aerosol deposition in children based on respiratory physiological and physical transport determinants. Using an idealized, anatomically-faithful upper airway geometry, airflow and aerosol motion are simulated as a function of age, spanning a five year old to an adult. Breathing conditions mimic realistic age-specific inhalation maneuvers representative of Dry Powder Inhalers (DPI) and nebulizer inhalation. Our findings point to the existence of a single dimensionless curve governing deposition in the conductive airways via the dimensionless Stokes number (Stk). Most significantly, we uncover the existence of a distinct deposition peak irrespective of age. For the DPI simulations, this peak (∼ 80%) occurs at Stk ≈ 0.06 whereas for nebulizer simulations, the corresponding peak (∼ 45%) occurs in the range of Stk between 0.03-0.04. Such dimensionless findings hence translate to an optimal window of micron-sized aerosols that evolves with age and varies with inhalation device. The existence of such deposition optima advocates revisiting design guidelines for optimizing deposition outcomes in pediatric inhalation therapy.
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Affiliation(s)
- Prashant Das
- Department of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Eliram Nof
- Department of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Israel Amirav
- Department of Pediatrics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Stavros C. Kassinos
- Computational Sciences Laboratory (UCY-CompSci), Department of Mechanical and Manufacturing Engineering, University of Cyprus, Kallipoleos Avenue 75, Nicosia 1678, Cyprus
| | - Josué Sznitman
- Department of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa, Israel
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17
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Preclinical evaluation of aerosol administration systems using Positron Emission Tomography. Eur J Pharm Biopharm 2018; 130:59-65. [DOI: 10.1016/j.ejpb.2018.05.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/28/2018] [Accepted: 05/31/2018] [Indexed: 11/16/2022]
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18
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Ratjen F, Moeller A, McKinney ML, Asherova I, Alon N, Maykut R, Angyalosi G. Eradication of early P. aeruginosa infection in children <7 years of age with cystic fibrosis: The early study. J Cyst Fibros 2018; 18:78-85. [PMID: 29685813 DOI: 10.1016/j.jcf.2018.04.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/19/2018] [Accepted: 04/04/2018] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Antibiotic eradication treatment is the standard-of-care for cystic fibrosis (CF) patients with early Pseudomonas aeruginosa (Pa)-infection; however, evidence from placebo-controlled trials is limited. METHODS This double-blind, placebo-controlled trial randomised CF patients <7 years (N = 51) with early Pa-infection to tobramycin inhalation solution (TOBI 300 mg) or placebo (twice daily) for 28 days with an optional cross-over on Day 35. Primary endpoint was proportion of patients having throat swabs/sputum free of Pa on Day 29. RESULTS On Day 29, 84.6% patients in the TOBI versus 24.0% in the placebo group were Pa-free (p < 0.001). At the end of the cross-over period, 76.0% patients receiving TOBI in the initial 28 days were Pa-free compared to 47.8% receiving placebo initially. Adverse events were consistent with the TOBI safety profile with no differences between TOBI and placebo. CONCLUSION TOBI was effective in eradicating early Pa-infection with a favourable safety profile in young CF patients. TRIAL REGISTRATION NUMBER NCT01082367.
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Affiliation(s)
- Felix Ratjen
- Division of Respiratory Medicine, Department of Pediatrics, Translational Medicine, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
| | - Alexander Moeller
- Division of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | | | - Irina Asherova
- Yaroslavl's Children's Clinical Hospital, Yaroslavl, Russia
| | - Nipa Alon
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, United States
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Deng Q, Ou C, Chen J, Xiang Y. Particle deposition in tracheobronchial airways of an infant, child and adult. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 612:339-346. [PMID: 28854390 DOI: 10.1016/j.scitotenv.2017.08.240] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/22/2017] [Accepted: 08/22/2017] [Indexed: 05/04/2023]
Abstract
BACKGROUND Particle deposition in human airways is important for assessing both health effects of inhaled particles and therapeutic efficacy of inhaled drug aerosols, but is not well understood for infants and children. OBJECTIVE We investigate particle deposition in infants and children by using computational fluid dynamics (CFD), and compare this with particle deposition in adults. METHODS We chose three population age groups: 7-month infant, 4-year old child, and 20-year old adult. Both airway structures and breathing conditions are considered to vary as a human grows from infancy to adulthood. We investigated deposition of micron-size particles (1-10μm) in both the upper (G3-G6) and lower (G9-G12) tracheobronchial (TB) airways under sedentary conditions. RESULTS We found that particle deposition in both upper and lower airways is the highest in an infant, next in a child, and lowest in an adult. As age increases, particle deposition decreases in the upper airways but increases in the lower. For infants, inertial impaction is the dominant deposition mechanism, thus particles are deposited more in the upper airways than in the lower. However, particles are deposited more in the lower airways than in the upper in adults, as gravitational sedimentation is the dominant deposition mechanism. CONCLUSION Given the differences in the airway structure and particle deposition mechanisms, particle deposition in infants and children differs from that in adults, not only in the efficiency of deposition but also in the site. Our findings provide evidence that "children are not small adults".
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Affiliation(s)
- Qihong Deng
- School of Energy Science and Engineering, Central South University, Changsha, China; XiangYa School of Public Health, Central South University, Changsha, China.
| | - Cuiyun Ou
- School of Energy Science and Engineering, Central South University, Changsha, China
| | - Jiao Chen
- School of Energy Science and Engineering, Central South University, Changsha, China
| | - Yuguang Xiang
- School of Energy Science and Engineering, Central South University, Changsha, China
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20
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Shinta Devi NLP, Nurhaeni N, Hayati H. Effect of Audiovisual Distraction on Distress and Oxygenation Status in Children Receiving Aerosol Therapy. Compr Child Adolesc Nurs 2017; 40:14-21. [DOI: 10.1080/24694193.2017.1386966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Nani Nurhaeni
- Faculty of Nursing Universitas Indonesia, Jalan Bahder Djohan Campus, Depok, Indonesia
| | - Happy Hayati
- Faculty of Nursing Universitas Indonesia, Jalan Bahder Djohan Campus, Depok, Indonesia
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21
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Lee JM, Kim SJ, Min HY. The Effects of Smartphone-based Nebulizer Therapy Education on Parents' Knowledge and Confidence of Performance in Caring for Children with Respiratory Disease. J Pediatr Nurs 2017; 36:13-19. [PMID: 28888493 DOI: 10.1016/j.pedn.2017.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 03/31/2017] [Accepted: 04/25/2017] [Indexed: 11/28/2022]
Abstract
PURPOSE This study aimed to identify the effects of smartphone-based nebulizer therapy education on the knowledge and confidence of parents while performing care for their children with respiratory disease. DESIGN AND METHODS This quasi-experimental study employed a pretest-posttest design using a nonequivalent control group. Data were collected from children's parents who had not used nebulizer therapy for their children previously. Both the groups were given nebulizer therapy education using the same content but different learning methods. The experimental group (n=36) was taught using smartphones, while the control group (n=36) was taught using verbal and paper-based methods. The data were analyzed using the Chi Square test, repeated measures analysis of variance, and t-test. RESULTS The mean scores on knowledge improvement (F=100.949, p<0.001) and confidence in performing care (t=-6.959, p<0.001) were significantly higher for the experimental group as compared to the control group. Further, the scores on satisfaction with the learning method were significantly higher for the experimental group as compared to the control group (t=-5.819, p<0.001). Our results suggest that smartphone-based education on nebulizer therapy might be effective in improving parents' knowledge and confidence in performing care for their children. CONCLUSION This study suggests that smartphone-based education needs to be considered as an effective educational intervention in providing nursing support for parents of children with respiratory disease.
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Affiliation(s)
- Jung Min Lee
- Department of Nursing, Hallym University, Chuncheon, South Korea.
| | - Shin-Jeong Kim
- Department of Nursing, Hallym University, Chuncheon, South Korea.
| | - Hae Young Min
- Department of Nursing, Dongguk University, Gyeongju, South Korea.
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22
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Nelson HS. Inhalation devices, delivery systems, and patient technique. Ann Allergy Asthma Immunol 2017; 117:606-612. [PMID: 27979017 DOI: 10.1016/j.anai.2016.05.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/04/2016] [Accepted: 05/10/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND In real-life clinical settings, physicians often consider the properties of various inhaled corticosteroids (ICSs), but typically little consideration is given to the properties of different inhalers and formulations. OBJECTIVE To discuss the effects of inhalation devices and user technique on efficacy, safety, and adherence with the aim of improving asthma management. METHODS Relevant publications were selected to augment discussion. RESULTS There are many types of devices available, each with advantages, disadvantages, ease of use, and rate of misuse. Aerosol particle size influences the deposition pattern of a drug in the lungs, and the optimal particle size range is 1 to 5 μm. Retrospective reviews suggest that smaller particles (1-2 μm) could provide improved asthma control, but randomized, prospective studies are needed. Multiple studies have demonstrated high misuse rates in patients for pressurized metered-dose inhalers and dry powder inhalers. Because of this, repeated education should include physical demonstrations of using the device, checking the patient's technique, correcting the technique, and rechecking the technique. This also means that dedicated, trained staff and placebo devices should be available for instructing patients. Furthermore, the device should be selected to be cost effective and to fit the patient's preference and ability to use it correctly to enhance compliance. Asthma management guidelines and algorithms are available to guide the clinician. CONCLUSION The choice of inhaler device should depend on cost effectiveness and the patient's preference and ability to use it correctly. Patient inhaler technique should be checked and, if necessary, corrected and rechecked, with retraining if needed, at every opportunity.
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Affiliation(s)
- Harold S Nelson
- National Jewish Health and University of Colorado Denver School of Medicine, Denver, Colorado.
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23
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Gillette C, Rockich-Winston N, Kuhn JA, Flesher S, Shepherd M. Inhaler Technique in Children With Asthma: A Systematic Review. Acad Pediatr 2016; 16:605-15. [PMID: 27130811 DOI: 10.1016/j.acap.2016.04.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 04/11/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Pediatric asthma is an important public health problem worldwide. The primary methods of medication delivery are inhalation devices. OBJECTIVES This systematic review examined: 1) what is the prevalence of correct inhaler technique among children with asthma, 2) are educational interventions associated with improved rates of correct inhalation technique, and 3) is improved inhaler technique associated with improved asthma outcomes? DATA SOURCES We included experimental and observational studies through searches of PubMed, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, CINAHL Complete, and clinicaltrials.gov. STUDY ELIGIBILITY CRITERIA, PARTICIPANTS, AND INTERVENTIONS Studies were eligible for this review if at least 1 outcome measure of the study included and reported results of child/adolescent inhaler technique. STUDY APPRAISAL AND SYNTHESIS METHODS The following information was extracted from each included study: study design (experimental vs observational), and outcomes data. The Downs and Black checklist was used to appraise study quality. RESULTS Twenty-eight studies were eligible for inclusion. We found that inhaler technique is generally very poor among children, but is better when children use their metered-dose inhalers (MDIs) with spacers. Technique in using turbuhalers and diskus inhalers is better than in MDI, but still poor. Counseling children on correct inhaler technique was associated with improved technique among children in multiple studies. LIMITATIONS We examined articles published in English. CONCLUSIONS AND IMPLICATIONS OF KEY FINDINGS Inhaler technique in children is generally poor. Physicians and other members of the health care team should instruct children and their caregivers on the proper use of their inhalation devices at every opportunity and correct mistakes when made to ensure effective medication delivery. REGISTRY This systematic review was registered under the Centre for Reviews and Dissemination, PROSPERO CRD42015025070 (http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42015025070).
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Affiliation(s)
- Chris Gillette
- Marshall University School of Pharmacy, Huntington, WVa; Marshall University College of Health Professions, Huntington, WVa.
| | | | - JoBeth A Kuhn
- Marshall University School of Pharmacy, Huntington, WVa
| | - Susan Flesher
- Marshall University Joan C. Edwards School of Medicine, Huntington, WVa
| | - Meagan Shepherd
- Marshall University Joan C. Edwards School of Medicine, Huntington, WVa
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Momeni S, Nokhodchi A, Ghanbarzadeh S, Hamishehkar H. The Effect of Spacer Morphology on the Aerosolization Performance of Metered-Dose Inhalers. Adv Pharm Bull 2016; 6:257-60. [PMID: 27478789 DOI: 10.15171/apb.2016.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 04/10/2016] [Accepted: 04/12/2016] [Indexed: 02/02/2023] Open
Abstract
PURPOSE Respiratory drug delivery has been attracted great interest for the past decades, because of the high incidence of pulmonary diseases. However, despite its invaluable benefits, there are some major drawbacks in respiratory drug delivery, mainly due to the relatively high drug deposition in undesirable regions. One way to improve the efficiency of respiratory drug delivery through metered-dose inhalers (MDI) is placing a respiratory spacer between the inhaler exit and the mouth. The aim of this study was to assess the effect of type and shape of spacer on the aerosolization performance of MDIs. METHODS A commercial Beclomethasone Dipropionate (BDP) MDI alone or equipped with two different spacer devices (roller and pear type) widely distributed in the world pharmaceutical market was used. The effect of spacers was evaluated by calculating aerosolization indexes such as fine particle fraction (FPF), mass median aerodynamic diameters (MMAD) and geometric standard deviation (GSD) using the next generation impactor. RESULTS Although one of the spacers resulted in superior outcomes than the other one, but it was not statistically significant. CONCLUSION The results confirmed that the type and shape of spacer did not substantially influence the aerosolization performance of MDIs.
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Affiliation(s)
- Sepideh Momeni
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.; School of Pharmacy, International Branch-Aras, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Nokhodchi
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, United Kingdom
| | - Saeed Ghanbarzadeh
- Zanjan Pharmaceutical Nanotechnology Research Center, and Department of Pharmaceutics, Faculty of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran.; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Katan JT, Hofemeier P, Sznitman J. Computational Models of Inhalation Therapy in Early Childhood: Therapeutic Aerosols in the Developing Acinus. J Aerosol Med Pulm Drug Deliv 2016; 29:288-98. [PMID: 26907858 DOI: 10.1089/jamp.2015.1271] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Inhalation therapy targeted to the deep alveolated regions holds great promise, specifically in pediatric populations. Yet, inhalation devices and medical protocols are overwhelmingly derived from adult guidelines, with very low therapeutic efficiency in young children. During the first years of life, airway remodeling and changing ventilation patterns are anticipated to alter aerosol deposition with underachieving outcomes in infants. As past research is still overwhelmingly focused on adults or limited to models of upper airways, a fundamental understanding of inhaled therapeutic transport and deposition in the acinar regions is needed to shed light on delivering medication to the developing alveoli. METHODS Using computational fluid dynamics (CFD), we simulated inhalation maneuvers in anatomically-inspired models of developing acinar airways, covering the distinct phases of lung development, from underdeveloped, saccular pulmonary architectures in infants, to structural changes in toddlers, ultimately mimicking space-filling morphologies of a young child, representing scaled-down adult lungs. We model aerosols whose diameters span the range of sizes acknowledged to reach the alveolar regions and examine the coupling between morphological changes, varying ventilation patterns and particle characteristics on deposition outcomes. RESULTS Spatial distributions of deposited particles point to noticeable changes in the patterns of aerosol deposition with age, in particular in the youngest age group examined (3 month). Total deposition efficiency, as well as deposition dispersion, vary not only with the phases of lung development but also and critically with aerosol diameter. CONCLUSIONS Given the various challenges when prescribing inhalation therapy to a young infant, our findings underline some mechanistic aspects to consider when targeting medication to the developing alveoli. Not only does the intricate coupling between acinar morphology and ventilation patterns need to be considered, but the physical properties (i.e., aerodynamic size) of therapeutic aerosols also closely affect the anticipated success rates of the inhaled medication.
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Affiliation(s)
- Janna Tenenbaum Katan
- Department of Biomedical Engineering, Technion-Israel Institute of Technology , Haifa, Israel
| | - Philipp Hofemeier
- Department of Biomedical Engineering, Technion-Israel Institute of Technology , Haifa, Israel
| | - Josué Sznitman
- Department of Biomedical Engineering, Technion-Israel Institute of Technology , Haifa, Israel
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26
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Kuzmov A, Minko T. Nanotechnology approaches for inhalation treatment of lung diseases. J Control Release 2015; 219:500-518. [PMID: 26297206 DOI: 10.1016/j.jconrel.2015.07.024] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 07/16/2015] [Accepted: 07/21/2015] [Indexed: 02/08/2023]
Abstract
Local administration of therapeutics by inhalation for treatment of lung diseases has the ability to deliver drugs, nucleic acids and peptides specifically to the site of their action and therefore enhance the efficacy of the treatment, limit the penetration of nebulized therapeutic agent(s) into the bloodstream and consequently decrease adverse systemic side effects of the treatment. Nanotechnology allows for a further enhancement of the treatment efficiency. The present review analyzes modern therapeutic approaches of inhaled nanoscale-based pharmaceutics for the detection and treatment of various lung diseases.
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Affiliation(s)
- Andriy Kuzmov
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway 08854, USA
| | - Tamara Minko
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway 08854, USA; Rutgers Cancer Institute of New Jersey, New Brunswick 08903, USA.
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27
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Zhou QT, Leung SSY, Tang P, Parumasivam T, Loh ZH, Chan HK. Inhaled formulations and pulmonary drug delivery systems for respiratory infections. Adv Drug Deliv Rev 2015; 85:83-99. [PMID: 25451137 DOI: 10.1016/j.addr.2014.10.022] [Citation(s) in RCA: 161] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/15/2014] [Accepted: 10/18/2014] [Indexed: 11/16/2022]
Abstract
Respiratory infections represent a major global health problem. They are often treated by parenteral administrations of antimicrobials. Unfortunately, systemic therapies of high-dose antimicrobials can lead to severe adverse effects and this calls for a need to develop inhaled formulations that enable targeted drug delivery to the airways with minimal systemic drug exposure. Recent technological advances facilitate the development of inhaled anti-microbial therapies. The newer mesh nebulisers have achieved minimal drug residue, higher aerosolisation efficiencies and rapid administration compared to traditional jet nebulisers. Novel particle engineering and intelligent device design also make dry powder inhalers appealing for the delivery of high-dose antibiotics. In view of the fact that no new antibiotic entities against multi-drug resistant bacteria have come close to commercialisation, advanced formulation strategies are in high demand for combating respiratory 'super bugs'.
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Affiliation(s)
- Qi Tony Zhou
- Advanced Drug Delivery Group, Faculty of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia
| | - Sharon Shui Yee Leung
- Advanced Drug Delivery Group, Faculty of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia
| | - Patricia Tang
- Advanced Drug Delivery Group, Faculty of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia
| | - Thaigarajan Parumasivam
- Advanced Drug Delivery Group, Faculty of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia
| | - Zhi Hui Loh
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Hak-Kim Chan
- Advanced Drug Delivery Group, Faculty of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia.
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Alhaider SA, Alshehri HA, Al-Eid K. Replacing nebulizers by MDI-spacers for bronchodilator and inhaled corticosteroid administration: Impact on the utilization of hospital resources. Int J Pediatr Adolesc Med 2014; 1:26-30. [PMID: 32289071 PMCID: PMC7104032 DOI: 10.1016/j.ijpam.2014.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 08/17/2014] [Indexed: 02/05/2023]
Abstract
Background and objectives Metered-dose inhalers plus spacers (MDI-spacer) are as effective as, or better than, nebulizers in aerosol delivery. The selection of aerosol delivery system for hospitalized children can have a significant impact on the utilization of healthcare resources. Design and setting A quality improvement project to evaluate the impact of conversion to MDI-spacer to administer bronchodilators (BDs) and inhaled corticosteroids (ICSs) to hospitalized children on the utilization of hospital resources. The project was conducted in a tertiary pediatric ward from April to May 2013. Materials and methods The project was conducted over a six-week period. In the first two weeks, data were gathered from all hospitalized children receiving BDs and/or ICSs by nebulizers. This data collection was followed by a two-week washout period during which training of healthcare providers and operational changes were implemented to enhance the conversion to MDI-spacer. In the last two weeks, data were gathered from hospitalized children after conversion to MDI-spacer. The primary outcomes included the mean time (in minutes) of medication preparation and delivery. Secondary outcomes included the following: need for respiratory therapy assistance, estimated cost of treatment sessions, and patient/caregiver satisfaction. Results Five hundred seventy-five treatment sessions were enrolled (288 on nebulizers, 287 on MDI-spacer). The nebulizer group had more male predominance and were slightly older compared to the MDI-spacer group (male: 59% vs. 53% and mean age: 52 vs. 40 months respectively). The duration of treatment preparation and delivery was significantly lower in the MDI-spacer group (2 min reduction in preparation time and 5 min reduction in delivery time; p < 0.01). Caregivers mastered MDI-spacer use after an average of two observed sessions, eliminating the need for respiratory therapy assistance during the hospital stay. Medication cost analysis showed savings in favor of MDI-spacer (cost reduction per 100 doses: 50% for albuterol, 30% for ipratropium bromide, and 87% for ICSs). The patient satisfaction survey showed “very good” to “excellent” levels in both groups. Conclusions Conversion to MDI-spacer for BDs and ICSs administration in hospitalized children improve hospital resource utilization.
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Affiliation(s)
- S A Alhaider
- Department of Pediatrics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - H A Alshehri
- College of Medicine, Al-Imam University, Riyadh, Saudi Arabia
| | - K Al-Eid
- Department of Respiratory Care Services, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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Hoppentocht M, Hagedoorn P, Frijlink H, de Boer A. Technological and practical challenges of dry powder inhalers and formulations. Adv Drug Deliv Rev 2014; 75:18-31. [PMID: 24735675 DOI: 10.1016/j.addr.2014.04.004] [Citation(s) in RCA: 197] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 03/17/2014] [Accepted: 04/04/2014] [Indexed: 11/27/2022]
Abstract
In the 50 years following the introduction of the first dry powder inhaler to the market, several developments have occurred. Multiple-unit dose and multi-dose devices have been introduced, but first generation capsule inhalers are still widely used for new formulations. Many new particle engineering techniques have been developed and considerable effort has been put in understanding the mechanisms that control particle interaction and powder dispersion during inhalation. Yet, several misconceptions about optimal inhaler performance manage to survive in modern literature. It is, for example still widely believed that a flow rate independent fine particle fraction contributes to an inhalation performance independent therapy, that dry powder inhalers perform best at 4 kPa (or 60 L/min) and that a high resistance device cannot be operated correctly by patients with reduced lung function. Nevertheless, there seems to be a great future for dry powder inhalation. Many new areas of interest for dry powder inhalation are explored and with the assistance of new techniques like computational fluid dynamics and emerging particle engineering technologies, this is likely to result in a new generation of inhaler devices and formulations, that will enable the introduction of new therapies based on inhaled medicines.
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