301
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Römgens AM, Bader DL, Bouwstra JA, Oomens CWJ. Predicting the optimal geometry of microneedles and their array for dermal vaccination using a computational model. Comput Methods Biomech Biomed Engin 2016; 19:1599-609. [DOI: 10.1080/10255842.2016.1173684] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Anne M. Römgens
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Dan L. Bader
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Faculty of Health Sciences, University of Southampton, Southampton, UK
| | - Joke A. Bouwstra
- Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Cees W. J. Oomens
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
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302
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Fan Y, Moon JJ. Particulate delivery systems for vaccination against bioterrorism agents and emerging infectious pathogens. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 9. [PMID: 27038091 DOI: 10.1002/wnan.1403] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/10/2016] [Accepted: 02/15/2016] [Indexed: 01/15/2023]
Abstract
Bioterrorism agents that can be easily transmitted with high mortality rates and cause debilitating diseases pose major threats to national security and public health. The recent Ebola virus outbreak in West Africa and ongoing Zika virus outbreak in Brazil, now spreading throughout Latin America, are case examples of emerging infectious pathogens that have incited widespread fear and economic and social disruption on a global scale. Prophylactic vaccines would provide effective countermeasures against infectious pathogens and biological warfare agents. However, traditional approaches relying on attenuated or inactivated vaccines have been hampered by their unacceptable levels of reactogenicity and safety issues, whereas subunit antigen-based vaccines suffer from suboptimal immunogenicity and efficacy. In contrast, particulate vaccine delivery systems offer key advantages, including efficient and stable delivery of subunit antigens, co-delivery of adjuvant molecules to bolster immune responses, low reactogenicity due to the use of biocompatible biomaterials, and robust efficiency to elicit humoral and cellular immunity in systemic and mucosal tissues. Thus, vaccine nanoparticles and microparticles are promising platforms for clinical development of biodefense vaccines. In this review, we summarize the current status of research efforts to develop particulate vaccine delivery systems against bioterrorism agents and emerging infectious pathogens. WIREs Nanomed Nanobiotechnol 2017, 9:e1403. doi: 10.1002/wnan.1403 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Yuchen Fan
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA
| | - James J Moon
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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303
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Li N, Wang N, Wang X, Zhen Y, Wang T. Microneedle arrays delivery of the conventional vaccines based on nonvirulent viruses. Drug Deliv 2016; 23:3234-3247. [DOI: 10.3109/10717544.2016.1165311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Ning Li
- School of Pharmacy, Anhui Medical University, Hefei, China, and
| | - Ning Wang
- School of Medical Engineering, Hefei University of Technology, Hefei, China
| | - Xueting Wang
- School of Pharmacy, Anhui Medical University, Hefei, China, and
| | - Yuanyuan Zhen
- School of Pharmacy, Anhui Medical University, Hefei, China, and
| | - Ting Wang
- School of Pharmacy, Anhui Medical University, Hefei, China, and
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304
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Kraan H, van der Stel W, Kersten G, Amorij JP. Alternative administration routes and delivery technologies for polio vaccines. Expert Rev Vaccines 2016; 15:1029-40. [DOI: 10.1586/14760584.2016.1158650] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Heleen Kraan
- Department of Research, Intravacc (Institute for Translational Vaccinology), Bilthoven, The Netherlands
| | - Wanda van der Stel
- Division of Drug Delivery Technology, Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands
| | - Gideon Kersten
- Department of Research, Intravacc (Institute for Translational Vaccinology), Bilthoven, The Netherlands
- Division of Drug Delivery Technology, Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands
| | - Jean-Pierre Amorij
- Department of Research, Intravacc (Institute for Translational Vaccinology), Bilthoven, The Netherlands
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305
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Römgens AM, Bader DL, Bouwstra JA, Oomens CW. A theoretical compartment model for antigen kinetics in the skin. Eur J Pharm Sci 2016; 84:18-25. [DOI: 10.1016/j.ejps.2016.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 12/16/2022]
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306
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Kovalainen M, Mönkäre J, Riikonen J, Pesonen U, Vlasova M, Salonen J, Lehto VP, Järvinen K, Herzig KH. Novel delivery systems for improving the clinical use of peptides. Pharmacol Rev 2016; 67:541-61. [PMID: 26023145 DOI: 10.1124/pr.113.008367] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Peptides have long been recognized as a promising group of therapeutic substances to treat various diseases. Delivery systems for peptides have been under development since the discovery of insulin for the treatment of diabetes. The challenge of using peptides as drugs arises from their poor bioavailability resulting from the low permeability of biological membranes and their instability. Currently, subcutaneous injection is clinically the most common administration route for peptides. This route is cost-effective and suitable for self-administration, and the development of appropriate dosing equipment has made performing the repeated injections relatively easy; however, only few clinical subcutaneous peptide delivery systems provide sustained peptide release. As a result, frequent injections are needed, which may cause discomfort and additional risks resulting from a poor administration technique. Controlled peptide delivery systems, able to provide required therapeutic plasma concentrations over an extended period, are needed to increase peptide safety and patient compliancy. In this review, we summarize the current peptidergic drugs, future developments, and parenteral peptide delivery systems. Special emphasis is given to porous silicon, a novel material in peptide delivery. Biodegradable and biocompatible porous silicon possesses some unique properties, such as the ability to carry exceptional high peptide payloads and to modify peptide release extensively. We have successfully developed porous silicon as a carrier material for improved parenteral peptide delivery. Nanotechnology, with its different delivery systems, will enable better use of peptides in several therapeutic applications in the near future.
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Affiliation(s)
- Miia Kovalainen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Juha Mönkäre
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Joakim Riikonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Ullamari Pesonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Maria Vlasova
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Jarno Salonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Vesa-Pekka Lehto
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Kristiina Järvinen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Karl-Heinz Herzig
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
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307
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Abstract
Transdermal delivery of drugs, a compelling route of systemic drug delivery, provides painless, reliable, targeted, efficient and cost effective therapeutic regimen for patients. However, its use is limited by skin barrier especially the stratum corneum barrier. Moreover, transdermal delivery of macromolecules remains a challenge. Naturally, varieties of physical methods, chemical enhancers and drug carriers have been used to counteract this limitation. Recently, transdermal peptides discovered as safer, more efficient and more specific enhancers could promote the delivery of macromolecules across the skin. Herein, the underlying transdermal peptides are included. Subsequently, we have discussed typical applications and the possible mechanism of two groups of biologically inspired transdermal peptide enhancers, namely cell penetration peptides and transdermal enhanced peptides.
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308
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Liu L, Kai H, Nagamine K, Ogawa Y, Nishizawa M. Porous polymer microneedles with interconnecting microchannels for rapid fluid transport. RSC Adv 2016. [DOI: 10.1039/c6ra07882f] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report a porous polymer microneedle array with continuous micropores that has high mechanical strength and water absorption speed.
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Affiliation(s)
- Liming Liu
- Department of Bioengineering and Robotics
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Hiroyuki Kai
- Department of Bioengineering and Robotics
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Kuniaki Nagamine
- Department of Bioengineering and Robotics
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Yudai Ogawa
- Department of Bioengineering and Robotics
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Matsuhiko Nishizawa
- Department of Bioengineering and Robotics
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
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309
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Siddhapura K, Harde H, Jain S. Immunostimulatory effect of tetanus toxoid loaded chitosan nanoparticles following microneedles assisted immunization. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:213-22. [DOI: 10.1016/j.nano.2015.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/15/2015] [Accepted: 10/14/2015] [Indexed: 11/29/2022]
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310
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Rejinold NS, Shin JH, Seok HY, Kim YC. Biomedical applications of microneedles in therapeutics: recent advancements and implications in drug delivery. Expert Opin Drug Deliv 2015; 13:109-31. [DOI: 10.1517/17425247.2016.1115835] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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311
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Microneedle patches for vaccination in developing countries. J Control Release 2015; 240:135-141. [PMID: 26603347 DOI: 10.1016/j.jconrel.2015.11.019] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 10/31/2015] [Accepted: 11/17/2015] [Indexed: 12/17/2022]
Abstract
Millions of people die of infectious diseases each year, mostly in developing countries, which could largely be prevented by the use of vaccines. While immunization rates have risen since the introduction of the Expanded Program on Immunization (EPI), there remain major challenges to more effective vaccination in developing countries. As a possible solution, microneedle patches containing an array of micron-sized needles on an adhesive backing have been developed to be used for vaccine delivery to the skin. These microneedle patches can be easily and painlessly applied by pressing against the skin and, in some designs, do not leave behind sharps waste. The patches are single-dose, do not require reconstitution, are easy to administer, have reduced size to simplify storage, transportation and waste disposal, and offer the possibility of improved vaccine immunogenicity, dose sparing and thermostability. This review summarizes vaccination challenges in developing countries and discusses advantages that microneedle patches offer for vaccination to address these challenges. We conclude that microneedle patches offer a powerful new technology that can enable more effective vaccination in developing countries.
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312
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Insertion Process of Ceramic Nanoporous Microneedles by Means of a Novel Mechanical Applicator Design. Pharmaceutics 2015; 7:503-22. [PMID: 26593939 PMCID: PMC4695831 DOI: 10.3390/pharmaceutics7040503] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 11/07/2015] [Accepted: 11/13/2015] [Indexed: 12/21/2022] Open
Abstract
Arrays of microneedles (MNAs) are integrated in an out-of-plane fashion with a base plate and can serve as patches for the release of drugs and vaccines. We used soft-lithography and micromolding to manufacture ceramic nanoporous (np)MNAs. Failure modes of ceramic npMNAs are as yet poorly understood and the question remained: is our npMNA platform technology ready for microneedle (MN) assembly into patches? We investigated npMNAs by microindentation, yielding average crack fracture forces above the required insertion force for a single MN to penetrate human skin. We further developed a thumb pressure-actuated applicator-assisted npMNA insertion method, which enables anchoring of MNs in the skin by an adhesive in one handling step. Using a set of simple artificial skin models, we found a puncture efficiency of this insertion method a factor three times higher than by applying thumb pressure on the npMNA base plate directly. In addition, this new method facilitated zero MN-breakage due to a well-defined force distribution exerted onto the MNs and the closely surrounding area prior to bringing the adhesive into contact with the skin. Owing to the fact that such parameter space exists, we can conclude that npMNAs by soft lithography are a platform technology for MN assembly into a patch.
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313
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IgG-loaded hyaluronan-based dissolving microneedles for intradermal protein delivery. J Control Release 2015; 218:53-62. [DOI: 10.1016/j.jconrel.2015.10.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/29/2015] [Accepted: 10/01/2015] [Indexed: 01/06/2023]
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314
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Combination of nanoparticles with photothermal effects and phase-change material enhances the non-invasive transdermal delivery of drugs. Colloids Surf B Biointerfaces 2015; 135:324-331. [DOI: 10.1016/j.colsurfb.2015.07.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/25/2015] [Accepted: 07/22/2015] [Indexed: 12/22/2022]
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315
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Investigation of Plasma Treatment on Micro-Injection Moulded Microneedle for Drug Delivery. Pharmaceutics 2015; 7:471-85. [PMID: 26529005 PMCID: PMC4695829 DOI: 10.3390/pharmaceutics7040471] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/22/2015] [Accepted: 10/22/2015] [Indexed: 11/17/2022] Open
Abstract
Plasma technology has been widely used to increase the surface energy of the polymer surfaces for many industrial applications; in particular to increase in wettability. The present work was carried out to investigate how surface modification using plasma treatment modifies the surface energy of micro-injection moulded microneedles and its influence on drug delivery. Microneedles of polyether ether ketone and polycarbonate and have been manufactured using micro-injection moulding and samples from each production batch have been subsequently subjected to a range of plasma treatment. These samples were coated with bovine serum albumin to study the protein adsorption on these treated polymer surfaces. Sample surfaces structures, before and after treatment, were studied using atomic force microscope and surface energies have been obtained using contact angle measurement and calculated using the Owens-Wendt theory. Adsorption performance of bovine serum albumin and release kinetics for each sample set was assessed using a Franz diffusion cell. Results indicate that plasma treatment significantly increases the surface energy and roughness of the microneedles resulting in better adsorption and release of BSA.
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316
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Alkilani AZ, McCrudden MTC, Donnelly RF. Transdermal Drug Delivery: Innovative Pharmaceutical Developments Based on Disruption of the Barrier Properties of the stratum corneum. Pharmaceutics 2015; 7:438-70. [PMID: 26506371 PMCID: PMC4695828 DOI: 10.3390/pharmaceutics7040438] [Citation(s) in RCA: 500] [Impact Index Per Article: 55.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/29/2015] [Accepted: 10/13/2015] [Indexed: 02/06/2023] Open
Abstract
The skin offers an accessible and convenient site for the administration of medications. To this end, the field of transdermal drug delivery, aimed at developing safe and efficacious means of delivering medications across the skin, has in the past and continues to garner much time and investment with the continuous advancement of new and innovative approaches. This review details the progress and current status of the transdermal drug delivery field and describes numerous pharmaceutical developments which have been employed to overcome limitations associated with skin delivery systems. Advantages and disadvantages of the various approaches are detailed, commercially marketed products are highlighted and particular attention is paid to the emerging field of microneedle technologies.
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Affiliation(s)
- Ahlam Zaid Alkilani
- School of Pharmacy, 97 Lisburn Road, Queens University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
- Faculty of Pharmacy, Zarqa University, Zarqa 132222, Jordan.
| | - Maelíosa T C McCrudden
- School of Pharmacy, 97 Lisburn Road, Queens University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
| | - Ryan F Donnelly
- School of Pharmacy, 97 Lisburn Road, Queens University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
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317
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318
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Abstract
The skin being the largest organ of the body presents a potential route for administration of drugs. Passive transdermal products such as gels, creams and patches deliver drugs effectively across the skin. However, this approach is limited to lipophilic molecules with low molecular weights. Passive transdermal delivery of proteins and peptides which are hydrophilic with high molecular weights is negligible. This led to the development of various ways of surmounting the skin barrier so as to make this route feasible for peptide and protein delivery. The current article reviews various active transdermal technologies with special emphasis on microneedle mediated delivery. Microneedles, especially dissolvable microneedles present an excellent platform for protein and peptide delivery. Significant advances have been made in the past decade in this area. Published literature shows a broad spectrum of molecules being delivered successfully via microneedles. However, success in clinic will give a boost to all the efforts and advances made in this field so far.
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319
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Zhang L, Wang W, Wang S. Effect of vaccine administration modality on immunogenicity and efficacy. Expert Rev Vaccines 2015; 14:1509-23. [PMID: 26313239 DOI: 10.1586/14760584.2015.1081067] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The many factors impacting the efficacy of a vaccine can be broadly divided into three categories: features of the vaccine itself, including immunogen design, vaccine type, formulation, adjuvant and dosing; individual variations among vaccine recipients and vaccine administration-related parameters. While much literature exists related to vaccines, and recently systems biology has started to dissect the impact of individual subject variation on vaccine efficacy, few studies have focused on the role of vaccine administration-related parameters on vaccine efficacy. Parenteral and mucosal vaccinations are traditional approaches for licensed vaccines; novel vaccine delivery approaches, including needless injection and adjuvant formulations, are being developed to further improve vaccine safety and efficacy. This review provides a brief summary of vaccine administration-related factors, including vaccination approach, delivery route and method of administration, to gain a better understanding of their potential impact on the safety and immunogenicity of candidate vaccines.
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Affiliation(s)
- Lu Zhang
- a 1 Department of Infectious Diseases, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China.,b 2 China-US Vaccine Research Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Wei Wang
- c 3 Wang Biologics, LLC, Chesterfield, MO 63017, USA ; Current affiliation: Bayer HealthCare, Berkeley, CA 94710, USA
| | - Shixia Wang
- d 4 Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
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320
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van der Maaden K, Sekerdag E, Schipper P, Kersten G, Jiskoot W, Bouwstra J. Layer-by-Layer Assembly of Inactivated Poliovirus and N-Trimethyl Chitosan on pH-Sensitive Microneedles for Dermal Vaccination. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8654-8660. [PMID: 26145437 DOI: 10.1021/acs.langmuir.5b01262] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The aim of this work was to coat pH-sensitive microneedle arrays with inactivated polio vaccine (IPV) particles and N-trimethyl chitosan chloride (TMC) via electrostatic interactions, and assess the immunogenicity of the vaccine after topical application of the coated microneedles in rats. The surface of 200 μm long microneedles was first chemically modified with pH-sensitive (pyridine) groups and then coated with negatively charged IPV and a positively charged polymer (TMC). To obtain a sufficient high antigen dose, 10 layers of IPV were alternately coated with TMC. The binding of IPV and TMC onto pH-sensitive microneedles was quantified and visualized by using fluorescently labeled TMC and IPV. The release of IPV and TMC from the microneedles was evaluated in ex vivo human skin by fluorescence and the immunogenicity of (unlabeled) IPV was assessed after topical application of the coated microneedles in rats. pH-sensitive microneedles were homogeneously coated with 10 layers of both IPV and TMC, resulting in 45 D antigen units IPV and 700 ng TMC per microneedle array. Fluorescence microscopy imaging revealed that both IPV and TMC were released into ex vivo human skin upon application of the coated microneedles. Finally, in vivo application of IPV-TMC-coated pH-sensitive microneedles in rats led to the induction of IPV specific antibody responses, illustrating that they are practically applicable. Topical administration of pH-sensitive microneedles coated with polyelectrolyte multinanolayers of antigens and oppositely charged polymers may be a useful approach for microneedle-based vaccination.
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Affiliation(s)
- Koen van der Maaden
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
| | - Emine Sekerdag
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
| | - Pim Schipper
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
| | - Gideon Kersten
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
- ‡Institute for Translational Vaccinology (Intravacc), P.O. Box 450, 3720 AL Bilthoven, The Netherlands
| | - Wim Jiskoot
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
| | - Joke Bouwstra
- †Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300 RA, 2311 EZ Leiden, The Netherlands
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321
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Lee J, Park SH, Seo IH, Lee KJ, Ryu W. Rapid and repeatable fabrication of high A/R silk fibroin microneedles using thermally-drawn micromolds. Eur J Pharm Biopharm 2015; 94:11-9. [DOI: 10.1016/j.ejpb.2015.04.024] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 11/26/2022]
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322
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Controlled release of a model vaccine by nanoporous ceramic microneedle arrays. Int J Pharm 2015; 491:375-83. [DOI: 10.1016/j.ijpharm.2015.06.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/15/2015] [Accepted: 06/18/2015] [Indexed: 12/24/2022]
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323
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324
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van der Maaden K, Luttge R, Vos PJ, Bouwstra J, Kersten G, Ploemen I. Microneedle-based drug and vaccine delivery via nanoporous microneedle arrays. Drug Deliv Transl Res 2015; 5:397-406. [PMID: 26044672 PMCID: PMC4529475 DOI: 10.1007/s13346-015-0238-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the literature, several types of microneedles have been extensively described. However, porous microneedle arrays only received minimal attention. Hence, only little is known about drug delivery via these microneedles. However, porous microneedle arrays may have potential for future microneedle-based drug and vaccine delivery and could be a valuable addition to the other microneedle-based drug delivery approaches. To gain more insight into porous microneedle technologies, the scientific and patent literature is reviewed, and we focus on the possibilities and constraints of porous microneedle technologies for dermal drug delivery. Furthermore, we show preliminary data with commercially available porous microneedles and describe future directions in this field of research.
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325
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Park Y, Park J, Chu GS, Kim KS, Sung JH, Kim B. Transdermal delivery of cosmetic ingredients using dissolving polymer microneedle arrays. BIOTECHNOL BIOPROC E 2015. [DOI: 10.1007/s12257-014-0775-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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326
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Wu X, Chen Y, Gui S, Wu X, Chen L, Cao Y, Yin D, Ma P. Sinomenine hydrochloride-loaded dissolving microneedles enhanced its absorption in rabbits. Pharm Dev Technol 2015; 21:787-793. [PMID: 26122959 DOI: 10.3109/10837450.2015.1055766] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Sinomenine hydrochloride-loaded dissolving microneedles (SH-DM) were fabricated by maltose and poly-lactic-co-glycolic acid using a casting method. The mechanical strength of SH-DM was investigated by an insertion test. In vivo transdermal absorption experiment was performed to evaluate the percutaneous absorption of SH-DM, sinomenine hydrochloride gel (SH-G) was used as a control. The results demonstrated that prepared SH-DM was morphologically intact with sufficient mechanical strength after inserting into aluminum foil and rat skin. The value of area under curve obtained after administration of SH-DM through transdermal in rabbits showed a significantly rise and was 1.99 times higher than that of SH-G, and the relative bioavailability value was 199.21%. These results showed that SH-DM enhanced bioavailability and permeability of SH.
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Affiliation(s)
- Xingxing Wu
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Yulin Chen
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Shuangying Gui
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China.,b Anhui Engineering Research Center for Chinese Medicine Preparation , Hefei , P.R. China , and
| | - Xiaoqing Wu
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Lei Chen
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Yingji Cao
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Dengke Yin
- a Department of Pharmacy , Anhui University of Chinese Medicine , Hefei , P.R. China
| | - Ping Ma
- c Global Pharmaceutical Research and Development, Hospira Inc. , McPherson , KS , USA
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327
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Ita K. Transdermal Delivery of Drugs with Microneedles-Potential and Challenges. Pharmaceutics 2015; 7:90-105. [PMID: 26131647 PMCID: PMC4588187 DOI: 10.3390/pharmaceutics7030090] [Citation(s) in RCA: 247] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/24/2015] [Accepted: 06/24/2015] [Indexed: 12/14/2022] Open
Abstract
Transdermal drug delivery offers a number of advantages including improved patient compliance, sustained release, avoidance of gastric irritation, as well as elimination of pre-systemic first-pass effect. However, only few medications can be delivered through the transdermal route in therapeutic amounts. Microneedles can be used to enhance transdermal drug delivery. In this review, different types of microneedles are described and their methods of fabrication highlighted. Microneedles can be fabricated in different forms: hollow, solid, and dissolving. There are also hydrogel-forming microneedles. A special attention is paid to hydrogel-forming microneedles. These are innovative microneedles which do not contain drugs but imbibe interstitial fluid to form continuous conduits between dermal microcirculation and an attached patch-type reservoir. Several microneedles approved by regulatory authorities for clinical use are also examined. The last part of this review discusses concerns and challenges regarding microneedle use.
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Affiliation(s)
- Kevin Ita
- College of Pharmacy, Touro University, Mare Island-Vallejo, CA 94592, USA.
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328
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Römgens AM, Bader DL, Bouwstra JA, Baaijens FPT, Oomens CWJ. Diffusion profile of macromolecules within and between human skin layers for (trans)dermal drug delivery. J Mech Behav Biomed Mater 2015; 50:215-22. [PMID: 26151288 DOI: 10.1016/j.jmbbm.2015.06.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/12/2015] [Accepted: 06/16/2015] [Indexed: 12/29/2022]
Abstract
Delivering a drug into and through the skin is of interest as the skin can act as an alternative drug administration route for oral delivery. The development of new delivery methods, such as microneedles, makes it possible to not only deliver small molecules into the skin, which are able to pass the outer layer of the skin in therapeutic amounts, but also macromolecules. To provide insight into the administration of these molecules into the skin, the aim of this study was to assess the transport of macromolecules within and between its various layers. The diffusion coefficients in the epidermis and several locations in the papillary and reticular dermis were determined for fluorescein dextran of 40 and 500 kDa using a combination of fluorescent recovery after photobleaching experiments and finite element analysis. The diffusion coefficient was significantly higher for 40 kDa than 500 kDa dextran, with median values of 23 and 9 µm(2)/s in the dermis, respectively. The values only marginally varied within and between papillary and reticular dermis. For the 40 kDa dextran, the diffusion coefficient in the epidermis was twice as low as in the dermis layers. The adopted method may be used for other macromolecules, which are of interest for dermal and transdermal drug delivery. The knowledge about diffusion in the skin is useful to optimize (trans)dermal drug delivery systems to target specific layers or cells in the human skin.
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Affiliation(s)
- Anne M Römgens
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - Dan L Bader
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Faculty of Health Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Joke A Bouwstra
- Division of Drug Delivery Technology, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Frank P T Baaijens
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Cees W J Oomens
- Soft Tissue Biomechanics and Engineering, Department of Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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329
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Cahill EM, O’Cearbhaill ED. Toward Biofunctional Microneedles for Stimulus Responsive Drug Delivery. Bioconjug Chem 2015; 26:1289-96. [DOI: 10.1021/acs.bioconjchem.5b00211] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ellen M. Cahill
- School of Mechanical
and Materials Engineering, §UCD Centre for Biomedical Engineering, and ‡UCD Conway Institute of Biomolecular
and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eoin D. O’Cearbhaill
- School of Mechanical
and Materials Engineering, §UCD Centre for Biomedical Engineering, and ‡UCD Conway Institute of Biomolecular
and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
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330
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Development of cup shaped microneedle array for transdermal drug delivery. Biointerphases 2015; 10:021008. [PMID: 25956180 DOI: 10.1116/1.4919779] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Microneedle technology is one of the attractive methods in transdermal drug delivery. However, the clinical applications of this method are limited owing to: complexity in the preparation of multiple coating solutions, drug leakage while inserting the microneedles into the skin and the outer walls of the solid microneedle can hold limited quantity of drug. Here, the authors present the fabrication of an array of rectangular cup shaped silicon microneedles, which provide for reduced drug leakage resulting in improvement of efficiency of drug delivery and possibility of introducing multiple drugs. The fabricated solid microneedles with rectangular cup shaped tip have a total height of 200 μm. These cup shaped tips have dimensions: 60 × 60 μm (length × breadth) with a depth of 60 μm. The cups are filled with drug using a novel in-house built drop coating system. Successful drug dissolution was observed when the coated microneedle was used on mice. Also, using the above method, it is possible to fill the cups selectively with different drugs, which enables simultaneous multiple drug delivery.
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331
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Polymer microneedles fabricated from PCL and PCL/PEG blends for transdermal delivery of hydrophilic compounds. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.01.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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332
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Schoubben A, Cavicchi A, Barberini L, Faraon A, Berti M, Ricci M, Blasi P, Postrioti L. Dynamic behavior of a spring-powered micronozzle needle-free injector. Int J Pharm 2015; 491:91-8. [PMID: 26027490 DOI: 10.1016/j.ijpharm.2015.05.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 05/25/2015] [Indexed: 11/28/2022]
Abstract
Conventional injection is still the leading method to deliver macromolecular therapeutics. Needle injection is considered a low compliance administration strategy, principally due to pain and needle phobia. This has fostered the research on the development of alternative strategies to circumvent the skin barrier. Among needle-free drug delivery methods, jet injection is an old strategy with great potential not yet completely disclosed. Here, the design, engineering and dynamic behavior of a novel spring-powered micronozzle needle-free injector is presented. Fluid mechanics was first studied in air to calculate jet force and speed as well as injection duration in different conditions. Polyacrylamide gel was used to simulate a soft tissue and to investigate the jet evolution over time of different injected doses. Finally, ex vivo characterization was carried out on pig skin. Results evidenced a direct dependence of the force, velocity, and duration with the injection volume. The model material allowed individuating the different steps of jet penetration and to attempt a mechanistic explanation. A different behavior has been recorded in the skin with interesting findings for subcutaneous and/or dermal delivery. Peculiar features with respect to existing jet injectors confers to this device good potentiality for a future clinical application.
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Affiliation(s)
- Aurélie Schoubben
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Perugia, Italy
| | - Andrea Cavicchi
- Dipartimento di Ingegneria, Università degli Studi di Perugia, Perugia, Italy
| | - Lanfranco Barberini
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Perugia, Italy
| | | | - Marco Berti
- Brovedani Group, San Vito al Tagliamento, Italy
| | - Maurizio Ricci
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Perugia, Italy
| | - Paolo Blasi
- Scuola di Scienze del Farmaco e dei Prodotti della Salute, Università degli Studi di Camerino, Camerino, Italy.
| | - Lucio Postrioti
- Dipartimento di Ingegneria, Università degli Studi di Perugia, Perugia, Italy.
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333
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Feasibility study for intraepidermal delivery of proteins using a solid microneedle array. Int J Pharm 2015; 486:52-8. [DOI: 10.1016/j.ijpharm.2015.03.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 03/20/2015] [Indexed: 11/23/2022]
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334
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Singh S, Davis H, Wilson P. Axillary hyperhidrosis: A review of the extent of the problem and treatment modalities. Surgeon 2015; 13:279-85. [PMID: 25921800 DOI: 10.1016/j.surge.2015.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 10/24/2014] [Accepted: 03/24/2015] [Indexed: 12/09/2022]
Abstract
BACKGROUND The purpose of this review is to summarize the extent of the problem of axillary hyperhidrosis and treatment modalities available. The benefits and disadvantages of various treatments are reflected on with the hope of providing a starting point to investigate new ways of treating hyperhidrosis. MATERIAL & METHODS A literature search was conducted using various databases and search criteria. RESULTS Current treatments include aluminium chloride antiperspirants, iontophoresis, botox injections and endoscopic thoracic sympathectomy. Botox therapy is usually the most effective treatment, without surgery or unpleasant side effects. However it has to be administered by a skilled clinician and involves around 20 injections to treat axillary hyperhidrosis. Other ways of giving Botox are being developed, the most promising one being the use of microneedles which are able to penetrate the skin and deliver drugs to the target area of the dermis without causing pain. In comparison to the temporary effects of microneedles, laser and microwave therapies are also assessed as they offer the hope of permanent relief from hyperhidrosis. CONCLUSION There is a considerable dearth in the literature on the management of axillary hyperhidrosis. Further study in larger populations with longer follow up times is critical to access the long term effects of treatment. Microneedles could be the future treatment of choice with the potential to deliver drugs in a safe and pain free way.
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Affiliation(s)
- Sanjay Singh
- Department of Vascular Surgery, Royal Lancaster Infirmary, Lancaster, LA1 4RP, UK.
| | - Harriet Davis
- Department of Vascular Surgery, Royal Lancaster Infirmary, Lancaster, LA1 4RP, UK
| | - Paul Wilson
- Department of Vascular Surgery, Royal Lancaster Infirmary, Lancaster, LA1 4RP, UK
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335
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Multifunctional liposomes constituting microneedles induced robust systemic and mucosal immunoresponses against the loaded antigens via oral mucosal vaccination. Vaccine 2015; 33:4330-40. [PMID: 25858854 DOI: 10.1016/j.vaccine.2015.03.081] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 03/12/2015] [Accepted: 03/24/2015] [Indexed: 11/20/2022]
Abstract
To develop effective, convenient and stable mucosal vaccines, mannose-PEG-cholesterol (MPC)/lipid A-liposomes (MLLs) entrapping model antigen bovine serum albumin (BSA) were prepared by the procedure of emulsification-lyophilization and used to constitute microneedles, forming the proMLL-filled microneedle arrays (proMMAs). The proMMAs were rather stable and hard enough to pierce porcine skin and, upon rehydration, dissolved rapidly recovering the MLLs without size and entrapment change. The proMMAs given to mice via oral mucosal (o.m.) route, rather than routine intradermal administration, elicited robust systemic and mucosal immunoresponses against the loaded antigens as evidenced by high levels of BSA-specific IgG in the sera and IgA in the salivary, intestinal and vaginal secretions of mice. Enhanced levels of IgG2a and IFN-γ in treated mice revealed that proMMAs induced a mixed Th1/Th2 immunoresponse. Moreover, a significant increase in CD8(+) T cells confirmed that strong cellular immunity had also been established by the immunization of the proMMAs. Thus, the proMMAs can be immunized via o.m. route to set up an effective multiple defense against pathogen invasion and may be an effective vaccine adjuvant-delivery system (VADS) applicable in the controlled temperature chain.
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336
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Wang C, Ruan R, Zhang L, Zhang Y, Zhou W, Lin J, Ding W, Wen L. Role of the Na+/K+-ATPase Beta-Subunit in Peptide-Mediated Transdermal Drug Delivery. Mol Pharm 2015; 12:1259-67. [DOI: 10.1021/mp500789h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Li Zhang
- Department
of Urology, Anhui Medical University, Hefei, Anhui 230032, China
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337
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Ogawa Y, Kato K, Miyake T, Nagamine K, Ofuji T, Yoshino S, Nishizawa M. Organic transdermal iontophoresis patch with built-in biofuel cell. Adv Healthc Mater 2015; 4:506-10. [PMID: 25402232 DOI: 10.1002/adhm.201400457] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/15/2014] [Indexed: 01/11/2023]
Abstract
A completely organic iontophoresis patch is reported. A built-in biofuel cell is mounted on the patch that generates transdermal iontophoretic administration of compounds into the skin. The amplitude of transdermal current is tuned by integrating a conducting polymer-based stretchable resistor of predetermined resistance.
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Affiliation(s)
- Yudai Ogawa
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Koichiro Kato
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Takeo Miyake
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Kuniaki Nagamine
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Takuya Ofuji
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Syuhei Yoshino
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
| | - Matsuhiko Nishizawa
- Department of Bioengineering and Robotics; Tohoku University; 6-6-1 Aramaki Aoba Sendai 980-8579 Japan
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338
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Draghici B, Ilies MA. Synthetic Nucleic Acid Delivery Systems: Present and Perspectives. J Med Chem 2015; 58:4091-130. [DOI: 10.1021/jm500330k] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Bogdan Draghici
- Department
of Pharmaceutical Sciences and Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, 3307 North Broad Street, Philadelphia, Pennsylvania 19140, United States
| | - Marc A. Ilies
- Department
of Pharmaceutical Sciences and Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, 3307 North Broad Street, Philadelphia, Pennsylvania 19140, United States
- Temple Materials Institute, 1803 North Broad Street, Philadelphia, Pennsylvania 19122, United States
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339
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Riahi R, Tamayol A, Shaegh SAM, Ghaemmaghami A, Dokmeci MR, Khademshosseini A. Microfluidics for Advanced Drug Delivery Systems. Curr Opin Chem Eng 2015; 7:101-112. [PMID: 31692947 PMCID: PMC6830738 DOI: 10.1016/j.coche.2014.12.001] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Considerable efforts have been devoted towards developing effective drug delivery methods. Microfluidic systems, with their capability for precise handling and transport of small liquid quantities, have emerged as a promising platform for designing advanced drug delivery systems. Thus, microfluidic systems have been increasingly used for fabrication of drug carriers or direct drug delivery to a targeted tissue. In this review, the recent advances in these areas are critically reviewed and the shortcomings and opportunities are discussed. In addition, we highlight the efforts towards developing smart drug delivery platforms with integrated sensing and drug delivery components.
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Affiliation(s)
- Reza Riahi
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Tamayol
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Seyed Ali Mousavi Shaegh
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Amir Ghaemmaghami
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, United Kingdom
| | - Mehmet R. Dokmeci
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Khademshosseini
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
- Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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340
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Qiu Y, Guo L, Zhang S, Xu B, Gao Y, Hu Y, Hou J, Bai B, Shen H, Mao P. DNA-based vaccination against hepatitis B virus using dissolving microneedle arrays adjuvanted by cationic liposomes and CpG ODN. Drug Deliv 2015; 23:2391-2398. [PMID: 25625495 DOI: 10.3109/10717544.2014.992497] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
DNA vaccines are simple to produce and can generate strong cellular and humoral immune response, making them attractive vaccine candidates. However, a major shortcoming of DNA vaccines is their poor immunogenicity when administered intramuscularly. Transcutaneous immunization (TCI) via microneedles is a promising alternative delivery route to enhance the vaccination efficacy. A novel dissolving microneedle array (DMA)-based TCI system loaded with cationic liposomes encapsulated with hepatitis B DNA vaccine and adjuvant CpG ODN was developed and characterized. The pGFP expression in mouse skin using DMA was imaged over time. In vivo immunity tests in mice were performed to observe the capability of DMA to induce immune response after delivery of DNA. The results showed that pGFP could be delivered into skin by DMA and expressed in skin. Further, the amount of expressed GFP was likely to peak at day 4. The immunity tests showed that the DMA-based DNA vaccination could induce effective immune response. CpG ODN significantly improved the immune response and achieved the shift of immune type from predominate Th2 type to a balance Th1/Th2 type. The cationic liposomes could further improve the immunogenicity of DNA vaccine. In conclusion, the novel DMA-based TCI system can effectively deliver hepatitis B DNA vaccine into skin, inducing effective immune response and change the immune type by adjuvant CpG ODN.
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Affiliation(s)
- Yuqin Qiu
- a Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Haidian , Beijing , China , and
| | - Lei Guo
- a Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Haidian , Beijing , China , and
| | - Suohui Zhang
- a Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Haidian , Beijing , China , and
| | - Bai Xu
- a Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Haidian , Beijing , China , and
| | - Yunhua Gao
- a Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Haidian , Beijing , China , and
| | - Yan Hu
- b 302 Military Hospital of China , Fengtai , Beijing , China
| | - Jun Hou
- b 302 Military Hospital of China , Fengtai , Beijing , China
| | - Bingke Bai
- b 302 Military Hospital of China , Fengtai , Beijing , China
| | - Honghui Shen
- b 302 Military Hospital of China , Fengtai , Beijing , China
| | - Panyong Mao
- b 302 Military Hospital of China , Fengtai , Beijing , China
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341
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Uddin MJ, Scoutaris N, Klepetsanis P, Chowdhry B, Prausnitz MR, Douroumis D. Inkjet printing of transdermal microneedles for the delivery of anticancer agents. Int J Pharm 2015; 494:593-602. [PMID: 25617676 DOI: 10.1016/j.ijpharm.2015.01.038] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 01/15/2015] [Accepted: 01/20/2015] [Indexed: 10/24/2022]
Abstract
A novel inkjet printing technology is introduced as a process to coat metal microneedle arrays with three anticancer agents 5-fluororacil, curcumin and cisplatin for transdermal delivery. The hydrophilic graft copolymer Soluplus(®) was used as a drug carrier and the coating formulations consisted of drug-polymer solutions at various ratios. A piezoelectric dispenser jetted microdroplets on the microneedle surface to develop uniform, accurate and reproducible coating layers without any material losses. Inkjet printing was found to depend on the nozzle size, the applied voltage (mV) and the duration of the pulse (μs). The drug release rates were determined in vitro using Franz type diffusion cells with dermatomed porcine skin. The drug release rates depended on the drug-polymer ratio, the drug lipophilicity and the skin thickness. All drugs presented increased release profiles (750 μm skin thickness), which were retarded for 900 μm skin thickness. Soluplus assisted the drug release especially for the water insoluble curcumin and cisplatin due to its solubilizing capacity. Inkjet printing has been shown to be an effective technology for coating of metal microneedles which can then be used for further transdermal drug delivery applications.
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Affiliation(s)
- Md Jasim Uddin
- Faculty of Engineering and Science, University of Greenwich, Medway Campus, Chatham Maritime, Kent ME4 4TB, UK
| | - Nicolaos Scoutaris
- Faculty of Engineering and Science, University of Greenwich, Medway Campus, Chatham Maritime, Kent ME4 4TB, UK
| | - Pavlos Klepetsanis
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio 26510, Greece
| | - Babur Chowdhry
- Faculty of Engineering and Science, University of Greenwich, Medway Campus, Chatham Maritime, Kent ME4 4TB, UK
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Dennis Douroumis
- Faculty of Engineering and Science, University of Greenwich, Medway Campus, Chatham Maritime, Kent ME4 4TB, UK.
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342
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A patchless dissolving microneedle delivery system enabling rapid and efficient transdermal drug delivery. Sci Rep 2015; 5:7914. [PMID: 25604728 PMCID: PMC4300505 DOI: 10.1038/srep07914] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 12/22/2014] [Indexed: 11/25/2022] Open
Abstract
Dissolving microneedles (DMNs) are polymeric, microscopic needles that deliver encapsulated drugs in a minimally invasive manner. Currently, DMN arrays are superimposed onto patches that facilitate their insertion into skin. However, due to wide variations in skin elasticity and the amount of hair on the skin, the arrays fabricated on the patch are often not completely inserted and large amount of loaded materials are not delivered. Here, we report “Microlancer”, a novel micropillar based system by which patients can self-administer DMNs and which would also be capable of achieving 97 ± 2% delivery efficiency of the loaded drugs regardless of skin type or the amount of hair on the skin in less than a second.
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343
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Wang T, Zhen Y, Ma X, Wei B, Li S, Wang N. Mannosylated and lipid A-incorporating cationic liposomes constituting microneedle arrays as an effective oral mucosal HBV vaccine applicable in the controlled temperature chain. Colloids Surf B Biointerfaces 2015; 126:520-30. [PMID: 25612819 DOI: 10.1016/j.colsurfb.2015.01.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 12/11/2014] [Accepted: 01/04/2015] [Indexed: 10/24/2022]
Abstract
To develop an effective, convenient and stable mucosal vaccine against hepatitis B virus (HBV), the mannose-PEG-cholesterol/lipid A-liposomes (MLLs) loaded with HBsAg were prepared by the procedure of emulsification-lyophilization and, subsequently, filled into the microholes of microneedle array reverse molds and dried to form the proHBsAg-MLLs microneedle arrays (proHMAs). The proHMAs were stable even at 40 °C for up to 3 days and hard enough to pierce porcine skin but, upon rehydration, rapidly dissolved recovering the HBsAg-MLLs without obvious changes in size and antigen association efficiency. Notably, immunization of mice only once with the proHMAs at oral mucosa induced robust systemic and widespread mucosal immunoresponses, as evidenced by the high levels of HBsAg-specific IgG in the sera and IgA in the salivary, intestinal and vaginal secretions. In addition, a strong cellular immunity against HBV had been established through a mixed Th1/Th2 response, as confirmed by a significant increase in CD8(+) T cells as well as the enhanced levels of IgG2a and IFN-γ in the treated mice. Thus, the proHMAs can be conveniently vaccinated via oral mucosal route to set up a multiple immune defense against HBV invasion and, in addition, may be a stable HBV vaccine applicable in the controlled temperature chain for wide distribution.
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Affiliation(s)
- Ting Wang
- School of Pharmacy, Anhui Medical University, 81 Plum Hill Road, Hefei, Anhui Province 230032, China.
| | - Yuanyuan Zhen
- School of Pharmacy, Anhui Medical University, 81 Plum Hill Road, Hefei, Anhui Province 230032, China
| | - Xiaoyu Ma
- School of Pharmacy, Anhui Medical University, 81 Plum Hill Road, Hefei, Anhui Province 230032, China
| | - Biao Wei
- School of Pharmacy, Anhui Medical University, 81 Plum Hill Road, Hefei, Anhui Province 230032, China
| | - Shuqin Li
- School of Pharmacy, Anhui Medical University, 81 Plum Hill Road, Hefei, Anhui Province 230032, China
| | - Ning Wang
- School of Medical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui Province 230009, China.
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344
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van de Wijdeven GG, Hirschberg HJ, Weyers W, Schalla W. Phase 1 clinical study with Bioneedles, a delivery platform for biopharmaceuticals. Eur J Pharm Biopharm 2015; 89:126-33. [DOI: 10.1016/j.ejpb.2014.11.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 11/25/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
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345
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Trends in Nonparenteral Delivery of Biologics, Vaccines and Cancer Therapies. NOVEL APPROACHES AND STRATEGIES FOR BIOLOGICS, VACCINES AND CANCER THERAPIES 2015. [PMCID: PMC7150203 DOI: 10.1016/b978-0-12-416603-5.00005-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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346
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Han T, Das DB. Potential of combined ultrasound and microneedles for enhanced transdermal drug permeation: a review. Eur J Pharm Biopharm 2014; 89:312-28. [PMID: 25541440 DOI: 10.1016/j.ejpb.2014.12.020] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 12/11/2014] [Accepted: 12/15/2014] [Indexed: 11/28/2022]
Abstract
Transdermal drug delivery (TDD) is limited by the outer layer of the skin, i.e., the stratum corneum. Research on TDD has become very active in the recent years and various technologies have been developed to overcome the resistance of the stratum corneum to molecular diffusion. In particular, researchers have started to consider the possibility of combining the TDD technologies in order to have further increase in drug permeability. Both microneedles (MNs) and ultrasound are promising technologies. They achieve enhancement in drug permeation via different mechanisms and therefore give a good potential for combining with each other. This review will focus on discussing the potential of this combinational technique along with other important issues, e.g., the mechanisms of ultrasound and MNs as it is and these mechanisms which are coupled via the two systems (i.e. MNs and ultrasound). We discuss the possible ways to achieve this combination as well as how this combination would increase the permeability. Some of the undeveloped (weaker) research areas of MNs and sonophoresis are also discussed in order to understand the true potential of combining the two technologies when they are developed further in the future. We propose several hypothetical combinations based on the possible mechanisms involved in MNs and ultrasound. Furthermore, we carry out a cluster analysis by which we determine the significance of this combinational method in comparison with some other selected combinational methods for TDD (e.g., MNs and iontophoresis). Using a time series analysis tool (ARIMA model), the current trend and the future development of combined MNs and ultrasound are also analysed. Overall, the review in this paper indicates that combining MNs and ultrasound is a promising TDD method for the future.
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Affiliation(s)
- Tao Han
- Chemical Engineering Department, Loughborough University, Loughborough, UK
| | - Diganta Bhusan Das
- Chemical Engineering Department, Loughborough University, Loughborough, UK.
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347
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Römgens A, Bader D, Bouwstra J, Baaijens F, Oomens C. Monitoring the penetration process of single microneedles with varying tip diameters. J Mech Behav Biomed Mater 2014; 40:397-405. [DOI: 10.1016/j.jmbbm.2014.09.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 09/09/2014] [Accepted: 09/15/2014] [Indexed: 12/29/2022]
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348
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van der Maaden K, Varypataki EM, Yu H, Romeijn S, Jiskoot W, Bouwstra J. Parameter optimization toward optimal microneedle-based dermal vaccination. Eur J Pharm Sci 2014; 64:18-25. [DOI: 10.1016/j.ejps.2014.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 08/11/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
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349
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Ma Y, Gill HS. Coating solid dispersions on microneedles via a molten dip-coating method: development and in vitro evaluation for transdermal delivery of a water-insoluble drug. J Pharm Sci 2014; 103:3621-3630. [PMID: 25213295 PMCID: PMC4374630 DOI: 10.1002/jps.24159] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 08/12/2014] [Accepted: 08/15/2014] [Indexed: 11/11/2022]
Abstract
This study demonstrates for the first time the ability to coat solid dispersions on microneedles as a means to deliver water-insoluble drugs through the skin. Polyethylene glycol (PEG) was selected as the hydrophilic matrix, and lidocaine base was selected as the model hydrophobic drug to create the solid dispersion. First, thermal characterization and viscosity measurements of the PEG-lidocaine mixture at different mass fractions were performed. The results show that lidocaine can remain stable at temperatures up to ∼130°C and that viscosity of the PEG-lidocaine molten solution increases as the mass fraction of lidocaine decreases. Differential scanning calorimetry demonstrated that at lidocaine mass fraction less than or equal to 50%, lidocaine is well dispersed in the PEG-lidocaine mixture. Uniform coatings were obtained on microneedle surfaces. In vitro dissolution studies in porcine skin showed that microneedles coated with PEG-lidocaine dispersions resulted in significantly higher delivery of lidocaine in just 3 min compared with 1 h topical application of 0.15 g EMLA®, a commercial lidocaine-prilocaine cream. In conclusion, the molten coating process we introduce here offers a practical approach to coat water-insoluble drugs on microneedles for transdermal delivery.
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Affiliation(s)
- Yunzhe Ma
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409
| | - Harvinder S Gill
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409.
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350
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Yang CH, Tsai MT, Shen SC, Ng CY, Jung SM. Feasibility of ablative fractional laser-assisted drug delivery with optical coherence tomography. BIOMEDICAL OPTICS EXPRESS 2014; 5:3949-59. [PMID: 25426321 PMCID: PMC4242029 DOI: 10.1364/boe.5.003949] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/07/2014] [Accepted: 10/11/2014] [Indexed: 05/20/2023]
Abstract
Fractional resurfacing creates hundreds of microscopic wounds in the skin without injuring surrounding tissue. This technique allows rapid wound healing owing to small injury regions, and has been proven as an effective method for repairing photodamaged skin. Recently, ablative fractional laser (AFL) treatment has been demonstrated to facilitate topical drug delivery into skin. However, induced fractional photothermolysis depends on several parameters, such as incident angle, exposure energy, and spot size of the fractional laser. In this study, we used fractional CO2 laser to induce microscopic ablation array on the nail for facilitating drug delivery through the nail. To ensure proper energy delivery without damaging tissue structures beneath the nail plate, optical coherence tomography (OCT) was implemented for quantitative evaluation of induced microscopic ablation zone (MAZ). Moreover, to further study the feasibility of drug delivery, normal saline was dripped on the exposure area of fingernail and the speckle variance in OCT signal was used to observe water diffusion through the ablative channels into the nail plate. In conclusion, this study establishes OCT as an effective tool for the investigation of fractional photothermolysis and water/drug delivery through microscopic ablation channels after nail fractional laser treatment.
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Affiliation(s)
- Chih-Hsun Yang
- Department of Dermatology, Chang Gung Memorial Hospital, 5 Fusing St., Kwei-Shan, Tao- Yuan, 33302,
Taiwan
- College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
| | - Meng-Tsan Tsai
- Department of Electrical Engineering, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
- Graduate Institute of Electro-Optical Engineering, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
| | - Su-Chin Shen
- College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
- Department of Ophthalmology, Chang Gung Memorial Hospital, 5 Fusing St. Kwei-Shan, Tao- Yuan, 33302
Taiwan
| | - Chau Yee Ng
- Department of Dermatology, Chang Gung Memorial Hospital, 5 Fusing St., Kwei-Shan, Tao- Yuan, 33302,
Taiwan
- College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
| | - Shih-Ming Jung
- College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 33302
Taiwan
- Department of Pathology, Chang Gung Memorial Hospital, 5 Fusing St., Kwei-Shan, Tao- Yuan, 33302
Taiwan
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