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Wang Z, Xiao M, Li Z, Wang X, Li F, Yang H, Chen Y, Zhu Z. Microneedle Patches-Integrated Transdermal Bioelectronics for Minimally Invasive Disease Theranostics. Adv Healthc Mater 2024; 13:e2303921. [PMID: 38341619 DOI: 10.1002/adhm.202303921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/29/2024] [Indexed: 02/12/2024]
Abstract
Wearable epidermal electronics with non- or minimally-invasive characteristics can collect, transduce, communicate, and interact with accessible physicochemical health indicators on the skin. However, due to the stratum corneum layer, rich information about body health is buried under the skin stratum corneum layer, for example, in the skin interstitial fluid. Microneedle patches are typically designed with arrays of special microsized needles of length within 1000 µm. Such characteristics potentially enable the access and sample of biomolecules under the skin or give therapeutical treatment painlessly and transdermally. Integrating microneedle patches with various electronics allows highly efficient transdermal bioelectronics, showing their great promise for biomedical and healthcare applications. This comprehensive review summarizes and highlights the recent progress on integrated transdermal bioelectronics based on microneedle patches. The design criteria and state-of-the-art fabrication techniques for such devices are initially discussed. Next, devices with different functions, including but not limited to health monitoring, drug delivery, and therapeutical treatment, are highlighted in detail. Finally, key issues associated with current technologies and future opportunities are elaborated to sort out the state of recent research, point out potential bottlenecks, and provide future research directions.
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Affiliation(s)
- Zifeng Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Min Xiao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Zhanhong Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Xinghao Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Fangjie Li
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Huayuan Yang
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
- Health Industry Innovation Center, Xin-Huangpu Joint Innovation Institute of Chinese Medicine, 81 Xiangxue Middle Avenue, Huangpu District, Guangzhou, Guangdong Province, 510799, China
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Nguyen HX, Kipping T, Banga AK. Polymeric Microneedles Enhance Transdermal Delivery of Therapeutics. Pharmaceutics 2024; 16:845. [PMID: 39065542 PMCID: PMC11280287 DOI: 10.3390/pharmaceutics16070845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 07/28/2024] Open
Abstract
This research presents the efficacy of polymeric microneedles in improving the transdermal permeation of methotrexate across human skin. These microneedles were fabricated from PLGA Expansorb® 50-2A and 50-8A and subjected to comprehensive characterization via scanning electron microscopy, Fourier-transform infrared spectroscopy, and mechanical analysis. We developed and assessed a methotrexate hydrogel for physicochemical and rheological properties. Dye binding, histological examinations, and assessments of skin integrity demonstrated the effective microporation of the skin by PLGA microneedles. We measured the dimensions of microchannels in the skin using scanning electron microscopy, pore uniformity analysis, and confocal microscopy. The skin permeation and disposition of methotrexate were researched in vitro. PLGA 50-8A microneedles appeared significantly longer, sharper, and more mechanically uniform than PLGA 50-2A needles. PLGA 50-8A needles generated substantially more microchannels, as well as deeper, larger, and more uniform channels in the skin than PLGA 50-2A needles. Microneedle insertion substantially reduced skin electrical resistance, accompanied by an elevation in transepidermal water loss values. PLGA 50-8A microneedle treatment provided a significantly higher cumulative delivery, flux, diffusion coefficient, permeability coefficient, and predicted steady-state plasma concentration; however, there was a shorter lag time than for PLGA 50-2A needles, base-treated, and untreated groups (p < 0.05). Conclusively, skin microporation using polymeric microneedles significantly improved the transdermal delivery of methotrexate.
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Affiliation(s)
- Hiep X. Nguyen
- Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
- Faculty of Pharmacy, Phenikaa University, Yen Nghia, Ha Dong, Hanoi 12116, Vietnam;
| | - Thomas Kipping
- MilliporeSigma, a Business of Merck KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany
| | - Ajay K. Banga
- Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
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Limcharoen B, Wanichwecharungruang S, Kröger M, Sansureerungsikul T, Schleusener J, Lena Klein A, Banlunara W, Meinke MC, Darvin ME. Dissolvable microneedles in the skin: Determination the impact of barrier disruption and dry skin on dissolution. Eur J Pharm Biopharm 2024; 199:114303. [PMID: 38657740 DOI: 10.1016/j.ejpb.2024.114303] [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: 12/27/2023] [Revised: 04/02/2024] [Accepted: 04/22/2024] [Indexed: 04/26/2024]
Abstract
Dissolvable microneedles (DMNs), fabricated from biocompatible materials that dissolve in both water and skin have gained popularity in dermatology. However, limited research exists on their application in compromised skin conditions. This study compares the hyaluronic acid-based DMNs penetration, formation of microchannels, dissolution, and diffusion kinetics in intact, barrier-disrupted (tape stripped), and dry (acetone-treated) porcine ear skin ex vivo. After DMNs application, comprehensive investigations including dermoscopy, stereomicroscope, skin hydration, transepidermal water loss (TEWL), optical coherence tomography (OCT), reflectance confocal laser scanning microscopy (RCLSM), confocal Raman micro-spectroscopy (CRM), two-photon tomography combined with fluorescence lifetime imaging (TPT-FLIM), histology, and scanning electron microscopy (SEM) were conducted. The 400 µm long DMNs successfully penetrated the skin to depths of ≈200 µm for dry skin and ≈200-290 µm for barrier-disrupted skin. Although DMNs fully inserted into all skin conditions, their dissolution rates were high in barrier-disrupted and low in dry skin, as observed through stereomicroscopy and TPT-FLIM. The dissolved polymer exhibited a more significant expansion in barrier-disrupted skin compared to intact skin, with the smallest increase observed in dry skin. Elevated TEWL and reduced skin hydration levels were evident in barrier-disrupted and dry skins compared to intact skin. OCT and RCLSM revealed noticeable skin indentation and pronounced microchannel areas, particularly in barrier-disrupted and dry skin. Additional confirmation of DMN effects on the skin and substance dissolution was obtained through histology, SEM, and CRM techniques. This study highlights the impact of skin condition on DMN effectiveness, emphasizing the importance of considering dissolvability and dissolution rates of needle materials, primarily composed of hyaluronic acid, for optimizing DMN-based drug delivery.
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Affiliation(s)
- Benchaphorn Limcharoen
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence in Advanced Materials and Biointerfaces, Chulalongkorn University, 10330, Thailand
| | - Supason Wanichwecharungruang
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand; Center of Excellence in Advanced Materials and Biointerfaces, Chulalongkorn University, 10330, Thailand
| | - Marius Kröger
- Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology (CCP), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Germany
| | - Titiporn Sansureerungsikul
- Mineed Technology, 928 Block 28, Building D, Chulalongkorn 7 Alley, Wangmai, Pathumwan, Bangkok 10330, Thailand
| | - Johannes Schleusener
- Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology (CCP), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Germany
| | - Anna Lena Klein
- Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology (CCP), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Germany
| | - Wijit Banlunara
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand; Center of Excellence in Advanced Materials and Biointerfaces, Chulalongkorn University, 10330, Thailand
| | - Martina C Meinke
- Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology (CCP), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Germany.
| | - Maxim E Darvin
- Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology (CCP), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Germany.
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Xie Y, He J, He W, Iftikhar T, Zhang C, Su L, Zhang X. Enhanced Interstitial Fluid Extraction and Rapid Analysis via Vacuum Tube-Integrated Microneedle Array Device. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308716. [PMID: 38502884 DOI: 10.1002/advs.202308716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/06/2024] [Indexed: 03/21/2024]
Abstract
Advancing the development of point-of-care testing (POCT) sensors that utilize interstitial fluid (ISF) presents considerable obstacles in terms of rapid sampling and analysis. Herein, an innovative strategy is introduced that involves the use of a 3D-printed, hollow microneedle array patch (MAP), in tandem with a vacuum tube (VT) connected through a hose, to improve ISF extraction efficiency and facilitate expedited analysis. The employment of negative pressure by the VT allows the MAP device to effectively gather ≈18 µL of ISF from the dermis of a live rabbit ear within a concise period of 5 min. This methodology enables the immediate and minimally invasive measurement of glucose levels within the body, employing personal healthcare meters for quantification. The fusion of the VT and MAP technologies provides for their effortless integration into a comprehensive and mobile system for ISF analysis, accomplished by preloading the hose with custom sensing papers designed to detect specific analytes. Moreover, the design and functionality of this integrated VT-MAP system are intuitively user-friendly, eliminating the requirement for specialized medical expertise. This feature enhances its potential to make a significant impact on the field of decentralized personal healthcare.
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Affiliation(s)
- Yuanting Xie
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
- Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, International Health Science Innovation Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, China
| | - Jinhua He
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Wenqing He
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen, 518060, China
| | - Tayyaba Iftikhar
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Chuangjie Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
| | - Lei Su
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
- Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, International Health Science Innovation Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, China
| | - Xueji Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen, 518060, China
- Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, International Health Science Innovation Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, China
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Wen W, Yang J, Liang X, Li Y, Zhang W, Sun X, Wang R. Construction of cryomicroneedles loaded with milk-derived exosomes encapsulated TNF-α siRNA and efficacy of percutaneous acupoint administration in rheumatoid arthritis. Int J Pharm 2024; 657:124159. [PMID: 38701907 DOI: 10.1016/j.ijpharm.2024.124159] [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: 12/04/2023] [Revised: 04/15/2024] [Accepted: 04/22/2024] [Indexed: 05/05/2024]
Abstract
Inhibiting the expression of tumor necrosis factor-α (TNF-α), a pro-inflammatory cytokine widely distributed in the serum and synovial fluid, is important for managing rheumatoid arthritis (RA). Despite the good therapeutic effects of TNF-α small interfering RNA (TNF-α siRNA) in RA animal models, safe and efficient siRNA delivery systems that retain stability are lacking. We introduced a novel therapy using milk-derived exosomes(mEXOs)-encapsulated TNF-α siRNA-coated cryomicroneedle (cryoMN) patch and evaluated its efficacy via local transdermal administration through acupoints in RA treatment. The loading of TNF-α siRNAs into mEXOs was achieved by sonication, the loading rate, stability, and in vitro release of mEXOs-TNF-α siRNA were determined. The cryoMNs were prepared by micromolding, morphology, drug loading, and mechanical strength of the cryoMN array were analyzed. The loading efficiency of TNF-α siRNA was up to 21% and each cryoMN contained 39.6 ± 1.29 μg of TNF-α siRNA. Frozen sections penetrated 523 ± 63 μm deep. In vitro experiments have shown that mEXOs-TNF-α siRNA cryoMNs have good biocompatibility and inhibit the proliferation of HFLS-RA cells. In vivo pharmacodynamics studies found that general conditions, changes in microcirculation indexes, synovial histopathological changes, and expression of related proteins in the synovial tissue in RA rabbits were effectively alleviated by mEXOs-TNF-α siRNA cryoMNs. Improvement of each index at acupoints was greater than that at non-acupoints. Our findings facilitate the development of cryoMNs combined with exosomes and acupoints drug delivery for the treatment of RA. The combination of exosomes and cryoMNs will enable the development of new-generation microneedle-based treatments.
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Affiliation(s)
- Wulong Wen
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jing Yang
- Basic Medical College of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiao Liang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yalan Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Weiye Zhang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xin Sun
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Rui Wang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China.
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Yao S, Zhang C, Ping J, Ying Y. Recent advances in hydrogel microneedle-based biofluid extraction and detection in food and agriculture. Biosens Bioelectron 2024; 250:116066. [PMID: 38310731 DOI: 10.1016/j.bios.2024.116066] [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: 08/13/2023] [Revised: 12/21/2023] [Accepted: 01/22/2024] [Indexed: 02/06/2024]
Abstract
Microneedle (MN) technology has been extensively studied for its advantages of minimal invasiveness and user-friendliness. Notably, hydrogel microneedles (HMNs) have garnered considerable attention for biofluid extraction due to its high swelling properties and biocompatibility. This review provides a comprehensive overview of definition, materials, and fabrication methods associated with HMNs. The extraction mechanisms and optimization strategies for enhancing extraction efficiency are summarized. Moreover, particular emphasis is placed on HMN-based biofluid extraction and detection in the domains of food and agriculture, encompassing the detection of small molecules, nucleic acids, and other relevant analytes. Finally, current challenges and possible solutions associated with HMN-based biofluid extraction are discussed.
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Affiliation(s)
- Shiyun Yao
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Chi Zhang
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China
| | - Yibin Ying
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China.
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Jiang Z, Li J, Wang J, Pan Y, Liang S, Hu Y, Wang L. Multifunctional fucoidan-loaded Zn-MOF-encapsulated microneedles for MRSA-infected wound healing. J Nanobiotechnology 2024; 22:152. [PMID: 38575979 PMCID: PMC10996189 DOI: 10.1186/s12951-024-02398-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 03/18/2024] [Indexed: 04/06/2024] Open
Abstract
Infected wound healing remains a challenging task in clinical practice due to several factors: (I) drug-resistant infections caused by various pathogens, (II) persistent inflammation that hinders tissue regeneration and (III) the ability of pathogens to persist intracellularly and evade antibiotic treatment. Microneedle patches (MNs), recognized for their effecacious and painless subcutaneous drug delivery, could greatly enhance wound healing if integrated with antibacterial functionality and tissue regenerative potential. A multifunctional agent with subcellular targeting capability and contained novel antibacterial components, upon loading onto MNs, could yield excellent therapeutic effects on wound infections. In this study, we sythesised a zeolitic imidazolate framework-8 nanoparticles (ZIF-8 NPs) loaded with low molecular weight fucoidan (Fu) and further coating by hyaluronic acid (HA), obtained a multifunctional HAZ@Fu NPs, which could hinders Methicillin-resistant Staphylococcus aureus (MRSA) growth and promotes M2 polarization in macrophages. We mixed HAZ@Fu NPs with photocrosslinked gelatin methacryloyl (GelMA) and loaded it into the tips of the MNs (HAZ@Fu MNs), administered to mice model with MRSA-infected full-thickness cutaneous wounds. MNs are able to penetrate the skin barrier, delivering HAZ@Fu NPs into the dermal layer. Since cells within infected tissues extensively express the HA receptor CD44, we also confirmed the HA endows the nanoparticles with the ability to target MRSA in subcellular level. In vitro and in vivo murine studies have demonstrated that MNs are capable of delivering HAZ@Fu NPs deep into the dermal layers. And facilitated by the HA coating, HAZ@Fu NPs could target MRSA surviving at the subcellular level. The effective components, such as zinc ions, Fu, and hyaluronic acid could sustainably released, which contributes to antibacterial activity, mitigates inflammation, promotes epithelial regeneration and fosters neovascularization. Through the RNA sequencing of macrophages post co-culture with HAZ@Fu, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis reveals that the biological functionalities associated with wound healing could potentially be facilitated through the PI3K-Akt pathway. The results indicate that the synergistic application of HAZ@Fu NPs with biodegradable MNs may serve as a significant adjunct in the treatment of infected wounds. The intricate mechanisms driving its biological effects merit further investigation.
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Affiliation(s)
- Zichao Jiang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jingyi Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jiahao Wang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yixiao Pan
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Shuailong Liang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yihe Hu
- Department of Orthopedics, First Affiliated Hospital, School of Medicine, Zhejiang, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
| | - Long Wang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.
- University Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
- Hunan Key Laboratory of Aging Biology, Xiangya Hospital, Central South University, Changsha, China.
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Shen S, Zheng X, Dong X, Fang M, Wan A, Zhu T, Yang Q, Xie J, Yan Q. Methotrexate-loaded hyaluronan-modified liposomes integrated into dissolving microneedles for the treatment of psoriasis. Eur J Pharm Sci 2024; 195:106711. [PMID: 38290610 DOI: 10.1016/j.ejps.2024.106711] [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: 10/25/2023] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/01/2024]
Abstract
Methotrexate (MTX) is a first-line drug in treating psoriasis because of its strong anti-proliferation and anti-inflammatory effects. However, systemic administration of MTX will lead to many side effects, such as gastrointestinal irritation, liver and kidney toxicity, etc. Herein, we developed liposome-loaded microneedles (MNs) system to improve transdermal efficiency, which was used to overcome the problems of low transdermal efficiency and poor therapeutic effect of traditional transdermal drug delivery methods. Hyaluronic acid (HA) was modified on the surface of MTX-loaded liposomes. The interaction of HA and CD44 could increase the adhesion of HA-MTX-Lipo to HaCaT cells, thereby promoting the apoptosis or death of HaCaT cells. Results indicated HA-MTX-Lipo MNs could inhibit the development of psoriasis and reduce the degree of skin erythema, scaling, and thickening. The mRNA levels of proinflammatory cytokines such as IL-17A, IL-23, and TNF-α were decreased. The epidermal thickness and proliferative cell-associated antigen Ki67 expression were also reduced. Specifically, the expression of mRNA levels of proinflammatory cytokines was down-regulated. The MNs transdermal delivery of HA-modified-MTX liposomes provided a promising method for treating psoriasis.
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Affiliation(s)
- Shulin Shen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xi Zheng
- Analysis Center of Agrobiology and Environmental Sciences, Zhejiang University, Hangzhou 310014, PR China
| | - Xu Dong
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Min Fang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Aiqun Wan
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Tong Zhu
- School of Education and English, Faculty of Humanities and Social Sciences, University of Nottingham, Ningbo 315199, PR China
| | - Qingliang Yang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Jing Xie
- Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou 325000, PR China
| | - Qinying Yan
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Research Institute of Pharmaceutical Particle Technology, Zhejiang University of Technology, Hangzhou 310014, PR China.
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Futaki M, Inamura K, Nishimura T, Niitsu T, Tojo T, Sugibayashi K, Todo H. A Hollow Microneedle Equipped with a Micropillar for Improved Needle Insertion and Injection of Drug Solution. Pharm Res 2024; 41:819-831. [PMID: 38443630 DOI: 10.1007/s11095-024-03681-7] [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: 12/12/2023] [Accepted: 02/21/2024] [Indexed: 03/07/2024]
Abstract
PURPOSE Hollow-type microneedles (hMNs) are a promising device for the effective administration of drugs into intradermal sites. Complete insertion of the needle into the skin and administration of the drug solution without leakage must be achieved to obtain bioavailability or a constant effect. In the present study, several types of hMN with or without a rounded blunt tip micropillar, which suppresses skin deformation, around a hollow needle, and the effect on successful needle insertion and administration of a drug solution was investigated. Six different types of hMNs with needle lengths of 1000, 1300, and 1500 µm with or without a micropillar were used. METHODS Needle insertion and the disposition of a drug in rat skin were investigated. In addition, the displacement-force profile during application of hMNs was also investigated using a texture analyzer with an artificial membrane to examine needle factors affecting successful insertion and administration of a drug solution by comparing with in vivo results. RESULTS According to the results with the drug distribution of iodine, hMN1300 with a micropillar was able to successfully inject drug solution into an intradermal site with a high success rate. In addition, the results of displacement-force profiles with an artificial membrane showed that a micropillar can be effective for depth control of the injected solution as well as the prevention of contact between the hMN pedestal and the deformed membrane. CONCLUSION In the present study, hMN1300S showed effective solution delivery into an intradermal site. In particular, a micropillar can be effective for depth control of the injected solution as well as preventing contact between the hMN pedestal and the deformed membrane. The obtained results will help in the design and development of hMNs that ensure successful injection of an administered drug.
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Affiliation(s)
- Mika Futaki
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Kazuya Inamura
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Tomoya Nishimura
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Takatoshi Niitsu
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Takehiko Tojo
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Kenji Sugibayashi
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba-ken, 283-8555, Japan
| | - Hiroaki Todo
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.
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10
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Che QT, Seo JW, Charoensri K, Nguyen MH, Park HJ, Bae H. 4D-printed microneedles from dual-sensitive chitosan for non-transdermal drug delivery. Int J Biol Macromol 2024; 261:129638. [PMID: 38266841 DOI: 10.1016/j.ijbiomac.2024.129638] [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: 10/04/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/26/2024]
Abstract
Microneedles are a promising micro-scale drug delivery platform that has been under development for over two decades. While 3D printing technology has been applied to fabricate these systems, the challenge of achieving needle sharpness remains. In this study, we present an innovative approach for microneedle fabrication using digital light processing (DLP) 3D printing and smart chitosan biomaterial. For the first time, we used hydroxybutyl methacrylated chitosan (HBCMA), which possesses dual temperature- and photo-sensitive properties, to create microneedles. The DLP approach enabled a quick generation of HBCMA-based microneedles with a high resolution. The microneedles exhibited 4D properties with a change in needle dimensions upon exposure to temperature, which enhances resolution, sharpens needles, and improves mechanical strength. We demonstrated the ability of these microneedles to load, deliver, sustained release small molecular drugs and penetrate soft tissue. Overall, the HBCMA-based microneedles show promising potential in non-dermal drug delivery applications.
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Affiliation(s)
- Quang Tuan Che
- Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jeong Wook Seo
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul, 05029, Republic of Korea
| | - Korakot Charoensri
- Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Minh Hiep Nguyen
- Center of Radiation Technology and Biotechnology, Nuclear Research Institute, Dalat 670000, Viet Nam
| | - Hyun Jin Park
- Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea.
| | - Hojae Bae
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul, 05029, Republic of Korea; Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.
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11
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Kang G, Kim M, Lee Y, Yang H, Seong BL, Jung H. Egg microneedles for transdermal vaccination of inactivated influenza virus. Biomater Sci 2024; 12:907-918. [PMID: 38174731 DOI: 10.1039/d3bm01635h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The use of dissolving microneedles (DMNs) is a drug delivery technique in which drug dissolution occurs once it is administered into the skin. The skin is a remarkable site for vaccination due to its significant immunologic properties. Compared to the traditional hypodermic intramuscular (IM) injection, vaccination via DMN does not require cold chains and allows for minimal invasive drug delivery. On account of the significance of skin vaccination, preceding studies have been conducted to elucidate the importance of the DMN technology in vaccination. Most of these studies focused on formulations that maintain the activity of the vaccine, so formulations designed to be specific to the mechanical properties of the microneedle could not be used together independently. In this study, we have developed influenza vaccine loaded egg microneedles (EMN) and characterized the specificity of layer-specific functions of EMN by distinguishing between formulations that can maintain the activity of the vaccine and have the mechanical strength. By the use of in vitro tests such as ELISA and SRID assays, we quantitively evaluated the antigen activity of the formulation candidates to be 87% and 91%, respectively. In vivo tests were also conducted as mouse groups were inoculated with the formulation constructed into egg microneedles (FLU-EMN) to determine the protective efficacy against infection. The results demonstrated that FLU-EMN with functionalized formulations successfully enabled protective immune response even with a fractional dose compared to IM injection.
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Affiliation(s)
- Geonwoo Kang
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, Republic of Korea
| | - Minkyung Kim
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Youjin Lee
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Huisuk Yang
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, Republic of Korea
| | - Baik-Lin Seong
- Department of Microbiology, College of Medicine, Yonsei University, Seoul, 03721, Republic of Korea
- Vaccine Innovative Technology Alliance (VITAL)-Korea, Yonsei University, Seoul 03721, Republic of Korea
| | - Hyungil Jung
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, Republic of Korea
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12
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Vergilio MM, Birchall JC, Lima LL, Rezende RA, Leonardi GR. Drug Delivery Systems based on Microneedles for Dermatological Diseases and Aesthetic Enhancement. Curr Med Chem 2024; 31:3473-3487. [PMID: 37231729 DOI: 10.2174/0929867330666230525122913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/22/2023] [Accepted: 03/29/2023] [Indexed: 05/27/2023]
Abstract
Microneedle (MN) devices comprise of micron-sized structures that circumvent biological barriers in a minimally invasive manner. MN research continues to grow and evolve; the technology was recently identified as one of the top ten overall emerging technologies of 2020. There is a growing interest in using such devices in cosmetology and dermatological conditions where the MNs mechanically disrupt the outer skin barrier layer, creating transient pathways that allow the passage of materials to underlying skin layers. This review aims to appraise the application of microneedle technologies in skin science, provide information on potential clinical benefits, as well as indicate possible dermatological conditions that can benefit from this technology, including autoimmunemediated inflammatory skin diseases, skin aging, hyperpigmentation, and skin tumors. A literature review was carried out to select studies that evaluated the use of microneedles to enhance drug delivery for dermatologic purposes. MN patches create temporary pathways that allow the passage of therapeutic material to deeper layers of the skin. Given their demonstrable promise in therapeutic applications it will be essential for healthcare professionals to engage with these new delivery systems as they transition to the clinic.
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Affiliation(s)
- Mariane Massufero Vergilio
- Graduate Program in Internal Medicine, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - James Caradoc Birchall
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, CF10 3NB, UK
| | - Lonetá Lauro Lima
- 3D Technologies Research Group, NT3D, Renato Archer Information Technology Center (CTI), Campinas, SP, Brazi
| | - Rodrigo Alvarenga Rezende
- 3D Technologies Research Group, NT3D, Renato Archer Information Technology Center (CTI), Campinas, SP, Brazi
- Postgraduate Program in Biotechnology, Universidade de Araraquara, Araraquara, SP, Brazil
| | - Gislaine Ricci Leonardi
- Graduate Program in Internal Medicine, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
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13
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Abbasiasl T, Mirlou F, Mirzajani H, Bathaei MJ, Istif E, Shomalizadeh N, Cebecioğlu RE, Özkahraman EE, Yener UC, Beker L. A Wearable Touch-Activated Device Integrated with Hollow Microneedles for Continuous Sampling and Sensing of Dermal Interstitial Fluid. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2304704. [PMID: 37709513 DOI: 10.1002/adma.202304704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/20/2023] [Indexed: 09/16/2023]
Abstract
Dermal interstitial fluid (ISF) is emerging as a rich source of biomarkers that complements conventional biofluids such as blood and urine. However, the impact of ISF sampling in clinical applications has been limited owing to the challenges associated with extraction. The implementation of microneedle-based wearable devices that can extract dermal ISF in a pain-free and easy-to-use manner has attracted growing attention in recent years. Here, a fully integrated touch-activated wearable device based on a laser-drilled hollow microneedle (HMN) patch for continuous sampling and sensing of dermal ISF is introduced. The developed platform can produce and maintain the required vacuum pressure (as low as ≈ -53 kPa) to collect adequate volumes of ISF (≈2 µL needle-1 h-1 ) for medical applications. The vacuum system can be activated through a one-touch finger operation. A parametric study is performed to investigate the effect of microneedle array size, vacuum pressure, and extraction duration on collected ISF. The capability of the proposed platform for continuous health monitoring is further demonstrated by the electrochemical detection of glucose and pH levels of ISF in animal models. This HMN-based system provides an alternative tool to the existing invasive techniques for ISF collection and sensing for medical diagnosis and treatment.
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Affiliation(s)
- Taher Abbasiasl
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Fariborz Mirlou
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Hadi Mirzajani
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Mohammad Javad Bathaei
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Emin Istif
- Faculty of Engineering and Natural Sciences, Kadir Has University, Cibali, Istanbul, 34083, Turkey
| | - Narges Shomalizadeh
- Koç University Research Center for Translational Research (KUTTAM), Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Rümeysa Emine Cebecioğlu
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Ecem Ezgi Özkahraman
- Department of Material Science and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Umut Can Yener
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Levent Beker
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Koç University Research Center for Translational Research (KUTTAM), Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Nanofabrication and Nanocharacterization Center for Scientific and Technological Advanced Research (n2Star), Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
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14
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Zhang L, Zhu C, Shi J, Zhou Z, Ge D. Design of three-section microneedle towards low insertion force and high drug delivery amount using the finite element method. Comput Methods Biomech Biomed Engin 2024; 27:156-166. [PMID: 36762916 DOI: 10.1080/10255842.2023.2174019] [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: 09/06/2022] [Accepted: 01/23/2023] [Indexed: 02/11/2023]
Abstract
A microneedle has been greatly recognized as one of the most promising devices for novel transdermal drug delivery system due to its capacity of piercing the protective stratum corneum with a minimally invasive and painless manner. During the past two decades, although numerous achievements have been made in the structure and material combination of microneedles, they mostly focus on the pharmacology and functionality of microneedles, and little is reported about how to design the shape of microneedles to reduce insertion force and especially improve penetration efficiency. Using the developed finite element method, we designed three-section microneedles (TSMN) with various sizes and evaluated their maximum insertion force, penetration efficiency, drug delivery amount and strength. The simulation results demonstrate that the well-designed TSMN with shaft width of 60 μm exhibits a lower maximum insertion force of 116.68 mN relative to 167.92 mN of conical microneedle and an effective penetration length of 81.6% relative to 71.38% of conical microneedle. Besides, the optimized TSMN with shaft width of 80 μm shows similar maximum insertion force and 2.3 times the drug delivery amount compared to conical microneedle. These excellent properties are attributed to the optimized design of the shape curve of TSMN sidewall. Such results may provide an inspiration of microneedle design for low insertion force and high penetration efficiency.
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Affiliation(s)
- Liqiang Zhang
- Institute of Intelligent Flexible Mechatronics, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, PR China
| | - Chenxi Zhu
- Institute of Intelligent Flexible Mechatronics, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jiakang Shi
- Institute of Intelligent Flexible Mechatronics, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhuoran Zhou
- Institute of Intelligent Flexible Mechatronics, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Daohan Ge
- Institute of Intelligent Flexible Mechatronics, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, PR China
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15
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Bisgaard SI, Nguyen LQ, Bøgh KL, Keller SS. Dermal tissue penetration of in-plane silicon microneedles evaluated in skin-simulating hydrogel, rat skin and porcine skin. BIOMATERIALS ADVANCES 2023; 155:213659. [PMID: 37939443 DOI: 10.1016/j.bioadv.2023.213659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/18/2023] [Accepted: 10/07/2023] [Indexed: 11/10/2023]
Abstract
Recently, microneedle-based sensors have been introduced as novel strategy for in situ monitoring of biomarkers in the skin. Here, in-plane silicon microneedles with different dimensions and shapes are fabricated and their ability to penetrate skin is evaluated. Arrays with flat, triangular, hypodermic, lancet and pencil-shaped microneedles, with lengths of 500-1000 μm, widths of 200-400 μm and thickness of 180-500 μm are considered. Fracture force is higher than 20 N for all microneedle arrays (MNA) confirming a high mechanical stability of the microneedles. Penetration force in skin-simulating hydrogels, excised rat abdominal skin and porcine ear skin is at least five times lower than the fracture force for all MNA designs. The lowest force for skin penetration is required for triangular microneedles with a low width and thickness. Skin tissue staining and histological analysis of rat abdominal skin and porcine ear skin confirm successful penetration of the epidermis for all MNA designs. However, the penetration depth is between 100 and 300 μm, which is considerably lower than the microneedle length. Tissue damage estimated by visual analysis of the penetration hole is smallest for triangular microneedles. Penetration ability and tissue damage are compared to the skin prick test (SPT) needle applied in allergy testing.
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Affiliation(s)
- Stephanie Ingemann Bisgaard
- National Centre for Nano Fabrication and Characterization, DTU Nanolab, Technical University of Denmark, Ørsteds Plads, Building 347, 2800 Kgs. Lyngby, Denmark; National Food Institute, DTU Food, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| | - Long Quang Nguyen
- National Centre for Nano Fabrication and Characterization, DTU Nanolab, Technical University of Denmark, Ørsteds Plads, Building 347, 2800 Kgs. Lyngby, Denmark
| | - Katrine Lindholm Bøgh
- National Food Institute, DTU Food, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| | - Stephan Sylvest Keller
- National Centre for Nano Fabrication and Characterization, DTU Nanolab, Technical University of Denmark, Ørsteds Plads, Building 347, 2800 Kgs. Lyngby, Denmark.
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16
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Shriky B, Babenko M, Whiteside BR. Dissolving and Swelling Hydrogel-Based Microneedles: An Overview of Their Materials, Fabrication, Characterization Methods, and Challenges. Gels 2023; 9:806. [PMID: 37888379 PMCID: PMC10606778 DOI: 10.3390/gels9100806] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023] Open
Abstract
Polymeric hydrogels are a complex class of materials with one common feature-the ability to form three-dimensional networks capable of imbibing large amounts of water or biological fluids without being dissolved, acting as self-sustained containers for various purposes, including pharmaceutical and biomedical applications. Transdermal pharmaceutical microneedles are a pain-free drug delivery system that continues on the path to widespread adoption-regulatory guidelines are on the horizon, and investments in the field continue to grow annually. Recently, hydrogels have generated interest in the field of transdermal microneedles due to their tunable properties, allowing them to be exploited as delivery systems and extraction tools. As hydrogel microneedles are a new emerging technology, their fabrication faces various challenges that must be resolved for them to redeem themselves as a viable pharmaceutical option. This article discusses hydrogel microneedles from a material perspective, regardless of their mechanism of action. It cites the recent advances in their formulation, presents relevant fabrication and characterization methods, and discusses manufacturing and regulatory challenges facing these emerging technologies before their approval.
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Affiliation(s)
- Bana Shriky
- Faculty of Engineering and Digital Technologies, University of Bradford, Bradford BD7 1DP, UK;
| | | | - Ben R. Whiteside
- Faculty of Engineering and Digital Technologies, University of Bradford, Bradford BD7 1DP, UK;
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17
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Potts MR, Evans SL, Pullin R, Coulman SA, Birchall JC, Wyatt H. An analysis of the relationship between microneedle spacing, needle force and skin strain during the indentation phase prior to skin penetration. Comput Methods Biomech Biomed Engin 2023; 26:1719-1731. [PMID: 36420964 DOI: 10.1080/10255842.2022.2136486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/25/2022]
Abstract
Microneedle (MN) array patches present a promising new approach for the minimally invasive delivery of therapeutics and vaccines. However, ensuring reproducible insertion of MNs into the skin is challenging. The spacing and arrangement of MNs in an array are critical determinants of skin penetration and the mechanical integrity of the MNs. In this work, the finite element method was used to model the effect of MN spacing on needle reaction force and skin strain during the indentation phase prior to skin penetration. Spacings smaller than 2-3 mm (depending on variables, e.g., skin stretch) were found to significantly increase these parameters.
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Affiliation(s)
| | - Sam L Evans
- School of Engineering, Cardiff University, Cardiff, UK
| | - Rhys Pullin
- School of Engineering, Cardiff University, Cardiff, UK
| | - Sion A Coulman
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - James C Birchall
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Hayley Wyatt
- School of Engineering, Cardiff University, Cardiff, UK
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18
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Chinnamani MV, Hanif A, Kannan PK, Kaushal S, Sultan MJ, Lee NE. Soft microfiber-based hollow microneedle array for stretchable microfluidic biosensing patch with negative pressure-driven sampling. Biosens Bioelectron 2023; 237:115468. [PMID: 37343311 DOI: 10.1016/j.bios.2023.115468] [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: 02/26/2023] [Revised: 05/19/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023]
Abstract
Wearable point-of-care testing devices are essential for personalized and decentralized healthcare. They can collect biofluid samples from the human body and use an analyzer to detect biomolecules. However, creating an integrated system is challenging due to the difficulty of achieving conformality to the human body, regulating the collection and transport of biofluids, developing a biosensor patch capable of precise biomolecule detection, and establishing a simple operation protocol that requires minimal wearer attention. In this study, we propose using a hollow microneedle (HMN) based on soft hollow microfibers and a microneedle-integrated microfluidic biosensor patch (MIMBP) capable of integrated blood sampling and electrochemical biosensing of biomolecules. The soft MIMBP includes a stretchable microfluidic device, a flexible electrochemical biosensor, and a HMN array made from flexible hollow microfibers. The HMNs are fabricated by electroplating flexible and mechanically durable hollow microfibers made from a nanocomposite matrix of polyimide, a poly (vinylidene fluoride-co-trifluoroethylene) copolymer, and single-walled carbon nanotubes. The MIMBP uses the negative pressure generated by a single button push to collect blood and deliver it to a flexible electrochemical biosensor modified with a gold nanostructure and Pt nanoparticles. We have demonstrated that glucose can be accurately measured up to the molar range in whole human blood collected through the microneedle. The MIMBP platform with HMNs has great potential as a foundation for the future development of simple, wearable, self-testing systems for minimally invasive biomolecule detection. This platform capable of sequential blood collection and high sensitivity glucose detection, which are ideal for personalized and decentralized healthcare.
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Affiliation(s)
- Mottour Vinayagam Chinnamani
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea
| | - Adeela Hanif
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea
| | - Padmanathan Karthick Kannan
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea
| | - Sandeep Kaushal
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea
| | - Muhammad Junaid Sultan
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea
| | - Nae-Eung Lee
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea; SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea; Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Samsung Medical Centre, Suwon, 16419, South Korea; Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea; Institute of Quantum Biophysics (IQB), Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea; Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea.
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19
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Dul M, Alali M, Ameri M, Burke MD, Craig CM, Creelman BP, Dick L, Donnelly RF, Eakins MN, Frivold C, Forster AH, Gilbert PA, Henke S, Henry S, Hunt D, Lewis H, Maibach HI, Mistilis JJ, Park JH, Prausnitz MR, Robinson DK, Hernandez CAR, Ross C, Shin J, Speaker TJ, Taylor KM, Zehrung D, Birchall JC, Jarrahian C, Coulman SA. Assessing the risk of a clinically significant infection from a Microneedle Array Patch (MAP) product. J Control Release 2023; 361:236-245. [PMID: 37437849 DOI: 10.1016/j.jconrel.2023.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/28/2023] [Accepted: 07/01/2023] [Indexed: 07/14/2023]
Abstract
Microneedle Array Patches (MAPs) are an emerging dosage form that creates transient micron-sized disruptions in the outermost physical skin barrier, the stratum corneum, to facilitate delivery of active pharmaceutical ingredients to the underlying tissue. Numerous MAP products are proposed and there is significant clinical potential in priority areas such as vaccination. However, since their inception scientists have hypothesized about the risk of a clinically significant MAP-induced infection. Safety data from two major Phase 3 clinical trials involving hundreds of participants, who in total received tens of thousands of MAP applications, does not identify any clinically significant infections. However, the incumbent data set is not extensive enough to make definitive generalizable conclusions. A comprehensive assessment of the infection risk is therefore advised for MAP products, and this should be informed by clinical and pre-clinical data, theoretical analysis and informed opinions. In this article, a group of key stakeholders identify some of the key product- and patient-specific factors that may contribute to the risk of infection from a MAP product and provide expert opinions in the context of guidance from regulatory authorities. Considerations that are particularly pertinent to the MAP dosage form include the specifications of the finished product (e.g. microbial specification), it's design features, the setting for administration, the skill of the administrator, the anatomical application site, the target population and the clinical context. These factors, and others discussed in this article, provide a platform for the development of MAP risk assessments and a stimulus for early and open dialogue between developers, regulatory authorities and other key stakeholders, to expedite and promote development of safe and effective MAP products.
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Affiliation(s)
- Maria Dul
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Howard I Maibach
- Department of Dermatology, University of California San Francisco, San Francisco, CA, USA
| | | | - Jung-Hwan Park
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | | | | | | | | | | | - Kevin Michael Taylor
- University College London School of Pharmacy, British Pharmacopoeia Commission, UK
| | | | - James C Birchall
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | | | - Sion A Coulman
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK.
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20
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Xu S, Liu W, Peng M, Ma D, Liu Z, Tang L, Li X, Chen S. Biodegradable Microneedles Array with Dual-Release Behavior and Parameter Optimization by Finite Element Analysis. J Pharm Sci 2023; 112:2506-2515. [PMID: 37072050 DOI: 10.1016/j.xphs.2023.04.007] [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: 01/14/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/20/2023]
Abstract
Microneedles (MNs) are particularly attractive for transdermal administration because of the improved safety, patient compliance and convenience. Dissolving MNs could provide rapid transdermal delivery, but with relatively low mechanical strength and almost no sustainability. On the other hand, hydrogel MNs are complicated to fabricate and have risk concerns. Herein, we developed a biodegradable MNs array composed of biocompatible silk fibroin and poly(vinyl alcohol) to overcome these limitations. Finite element analysis was employed for parameter optimization. The MNs array fabricated by the optimal parameters and material displayed sufficient mechanical strength to disrupt stratum corneum and formed microchannels for transdermal delivery. Dual-release profile was observed in the MNs array, with rapid release in the beginning, and prolonged release afterward. This release behavior fits Weibull release model and is favorable for topical application. The initial immediate release can quickly deliver active compounds to reach the therapeutic effective concentration and facilitate skin penetration, and the sustained release may supply the skin with active compounds over a prolonged period. This biodegradable MNs array is easy to fabricate, mechanically robust, could eliminate safety concerns, and provide the sustainability and advantage for large-scale production.
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Affiliation(s)
- Shuai Xu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, China
| | - Wenyuan Liu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, China
| | - Mingwei Peng
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, China
| | - Dewei Ma
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, China
| | - Zhixiang Liu
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Lingfeng Tang
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Xiaoniu Li
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Siyuan Chen
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing, China.
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21
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Chen J, Cai X, Zhang W, Zhu D, Ruan Z, Jin N. Fabrication of Antibacterial Sponge Microneedles for Sampling Skin Interstitial Fluid. Pharmaceutics 2023; 15:1730. [PMID: 37376179 DOI: 10.3390/pharmaceutics15061730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/28/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Microneedles (MNs) have recently garnered extensive interest concerning direct interstitial fluid (ISF) extraction or their integration into medical devices for continuous biomarker monitoring, owing to their advantages of painlessness, minimal invasiveness, and ease of use. However, micropores created by MN insertion may provide pathways for bacterial infiltration into the skin, causing local or systemic infection, especially with long-term in situ monitoring. To address this, we developed a novel antibacterial sponge MNs (SMNs@PDA-AgNPs) by depositing silver nanoparticles (AgNPs) on polydopamine (PDA)-coated SMNs. The physicochemical properties of SMNs@PDA-AgNPs were characterized regarding morphology, composition, mechanical strength, and liquid absorption capacity. The antibacterial effects were evaluated and optimized through agar diffusion assays in vitro. Wound healing and bacterial inhibition were further examined in vivo during MN application. Finally, the ISF sampling ability and biosafety of SMNs@PDA-AgNPs were assessed in vivo. The results demonstrate that antibacterial SMNs enable direct ISF extraction while preventing infection risks. SMNs@PDA-AgNPs could potentially be used for direct sampling or combined with medical devices for real-time diagnosis and management of chronic diseases.
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Affiliation(s)
- Jianmin Chen
- School of Pharmacy, Fujian Medical University, Putian 351100, China
- Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Putian 351100, China
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
| | - Xiaozhen Cai
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
| | - Wenqin Zhang
- School of Pharmacy, Fujian Medical University, Putian 351100, China
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
| | - Danhong Zhu
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
| | - Zhipeng Ruan
- Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Putian 351100, China
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
| | - Nan Jin
- Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Putian 351100, China
- School of Pharmacy and Medical technology, Putian University, Putian 351100, China
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22
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Zhang Y, Wang S, Yang Y, Zhao S, You J, Wang J, Cai J, Wang H, Wang J, Zhang W, Yu J, Han C, Zhang Y, Gu Z. Scarless wound healing programmed by core-shell microneedles. Nat Commun 2023; 14:3431. [PMID: 37301874 PMCID: PMC10257705 DOI: 10.1038/s41467-023-39129-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Effective reprogramming of chronic wound healing remains challenging due to the limited drug delivery efficacy hindered by physiological barriers, as well as the inappropriate dosing timing in distinct healing stages. Herein, a core-shell structured microneedle array patch with programmed functions (PF-MNs) is designed to dynamically modulate the wound immune microenvironment according to the varied healing phases. Specifically, PF-MNs combat multidrug-resistant bacterial biofilm at the early stage via generating reactive oxygen species (ROS) under laser irradiation. Subsequently, the ROS-sensitive MN shell gradually degrades to expose the MN core component, which neutralizes various inflammatory factors and promotes the phase transition from inflammation to proliferation. In addition, the released verteporfin inhibits scar formation by blocking Engrailed-1 (En1) activation in fibroblasts. Our experiments demonstrate that PF-MNs promote scarless wound repair in mouse models of both acute and chronic wounds, and inhibit the formation of hypertrophic scar in rabbit ear models.
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Affiliation(s)
- Ying Zhang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Shenqiang Wang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
| | - Yinxian Yang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Sheng Zhao
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jiahuan You
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Junxia Wang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jingwei Cai
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 310016, Hangzhou, China
| | - Hao Wang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jie Wang
- Department of Burns and Wound Care Center, the Second Affiliated Hospital, College of Medicine, Zhejiang University, 310009, Hangzhou, China
| | - Wei Zhang
- Department of Burns and Wound Care Center, the Second Affiliated Hospital, College of Medicine, Zhejiang University, 310009, Hangzhou, China
| | - Jicheng Yu
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 310016, Hangzhou, China
- Jinhua Institute of Zhejiang University, 321299, Jinhua, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 311121, Hangzhou, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, 310058, Hangzhou, China
| | - Chunmao Han
- Department of Burns and Wound Care Center, the Second Affiliated Hospital, College of Medicine, Zhejiang University, 310009, Hangzhou, China
| | - Yuqi Zhang
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
- Department of Burns and Wound Care Center, the Second Affiliated Hospital, College of Medicine, Zhejiang University, 310009, Hangzhou, China.
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, 310058, Hangzhou, China.
| | - Zhen Gu
- Key Laboratory for Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 310016, Hangzhou, China.
- Jinhua Institute of Zhejiang University, 321299, Jinhua, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 311121, Hangzhou, China.
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, 310058, Hangzhou, China.
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, 310027, Hangzhou, China.
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23
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McNamee M, Wong S, Guy O, Sharma S. Microneedle technology for potential SARS-CoV-2 vaccine delivery. Expert Opin Drug Deliv 2023:1-16. [PMID: 37128730 DOI: 10.1080/17425247.2023.2209718] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
INTRODUCTION Microneedle fabrication was conceptualised in the 1970s as devices for painless transdermal drug delivery. The last two decades have seen considerable research and financial investment in this area with SARS-CoV-2 and other vaccines catalysing their application to in vivo intradermal vaccine delivery. Microneedle arrays have been fabricated in different shapes, geometries, formats, and out of different materials. AREAS COVERED The recent pandemic has offered microneedle platforms the opportunity to be employed as a vehicle for SARS-CoV-2 vaccine administration. The various modes of vaccination delivery and the potential of microneedle arrays-based vaccines will be presented, with a specific focus placed on recent SARS-CoV-2 research. The advantages of microneedle-based vaccine administration, in addition to the major hurdles to their en masse implementation, will be examined. EXPERT OPINION Considering the widely acknowledged disadvantages of current vaccine delivery, such as anxiety, pain, and the requirement for professional administration, a large shift in this research sphere is imminent. The SARS-CoV-2 pandemic has catalysed the development of alternate vaccination platforms, working to avoid the requirement for mass vaccination centres. As microneedle vaccine patches are transitioning through clinical study phases, research will be required to ready this technology for a more mass production environment.
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Affiliation(s)
- Megan McNamee
- School of Engineering and Applied Sciences, Faculty of Science and Engineering , Fabian Way, Bay Campus, Swansea University, Swansea SA1 8EN, UK
| | - Shuyi Wong
- School of Engineering and Applied Sciences, Faculty of Science and Engineering , Fabian Way, Bay Campus, Swansea University, Swansea SA1 8EN, UK
| | - Owen Guy
- School of Engineering and Applied Sciences, Faculty of Science and Engineering , Fabian Way, Bay Campus, Swansea University, Swansea SA1 8EN, UK
| | - Sanjiv Sharma
- School of Engineering and Applied Sciences, Faculty of Science and Engineering , Fabian Way, Bay Campus, Swansea University, Swansea SA1 8EN, UK
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24
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Haghniaz R, Kim HJ, Montazerian H, Baidya A, Tavafoghi M, Chen Y, Zhu Y, Karamikamkar S, Sheikhi A, Khademhosseini A. Tissue adhesive hemostatic microneedle arrays for rapid hemorrhage treatment. Bioact Mater 2023; 23:314-327. [PMID: 36439081 PMCID: PMC9692134 DOI: 10.1016/j.bioactmat.2022.08.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/06/2022] [Accepted: 08/20/2022] [Indexed: 11/26/2022] Open
Abstract
Blood loss by hemorrhaging wounds accounts for over one-third of ∼5 million trauma fatalities worldwide every year. If not controlled in a timely manner, exsanguination can take lives within a few minutes. Developing new biomaterials that are easy to use by non-expert patients and promote rapid blood coagulation is an unmet medical need. Here, biocompatible, and biodegradable microneedle arrays (MNAs) based on gelatin methacryloyl (GelMA) biomaterial hybridized with silicate nanoplatelets (SNs) are developed for hemorrhage control. The SNs render the MNAs hemostatic, while the needle-shaped structure increases the contact area with blood, synergistically accelerating the clotting time from 11.5 min to 1.3 min in vitro. The engineered MNAs reduce bleeding by ∼92% compared with the untreated injury group in a rat liver bleeding model. SN-containing MNAs outperform the hemostatic effect of needle-free patches and a commercial hemostat in vivo via combining micro- and nanoengineered features. Furthermore, the tissue adhesive properties and mechanical interlocking support the suitability of MNAs for wound closure applications. These hemostatic MNAs may enable rapid hemorrhage control, particularly for patients in developing countries or remote areas with limited or no immediate access to hospitals.
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Affiliation(s)
- Reihaneh Haghniaz
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Han-Jun Kim
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Hossein Montazerian
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Avijit Baidya
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
| | - Maryam Tavafoghi
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
| | - Yi Chen
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Solmaz Karamikamkar
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
| | - Amir Sheikhi
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, United States
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, United States
| | - Ali Khademhosseini
- Department of Bioengineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, CA, 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, CA, 90095, United States
- Terasaki Institute for Biomedical Innovation, 11570 W Olympic Boulevard, Los Angeles, CA, 90024, United States
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25
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Yadav PR, Das DB, Pattanayek SK. Coupled Diffusion-Binding-Deformation Modelling for Phase-Transition Microneedles-Based Drug Delivery. J Pharm Sci 2023; 112:1108-1118. [PMID: 36528111 DOI: 10.1016/j.xphs.2022.12.009] [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: 11/03/2022] [Revised: 12/10/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022]
Abstract
Phase-transition microneedles (PTMNs)-based transdermal drug delivery (TDD) is gaining popularity due to its non-invasiveness and ability to deliver a wide range of drugs. PTMNs absorb interstitial skin fluid (ISF) and transport drugs from microneedle (MNs) domain to the skin without polymer dissolution. To establish PTMNs for practical use, one needs to understand and optimise the key parameters governing drug transport mechanisms to achieve controlled drug delivery. In addressing this point, we have developed a coupled diffusion-binding-deformation model to understand the effect of physicochemical parameters (e.g., swelling capacity, drug binding) of MN and skin mechanical properties on overall drug transport behaviour. The contact mechanics at the MN and skin interface is introduced to account for the resistive force exerted by the deformed skin to MN swelling. The model is validated with the reported data of in vitro insulin delivery using polyvinyl alcohol (PVA) MN. The drug binding parameters are estimated from the fitting of the cumulative release of insulin within 6 hours of MN insertion. To predict the in vivo data of insulin delivery using the PVA MN, one-compartment model of drug pharmacokinetics is incorporated. It is shown in the paper that the model is able to predict the final insulin concentration in blood and in good agreement with the reported experimental data. The proposed model is concluded to be a tool for the predictive design and development of PTMNs-based TDD systems.
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Affiliation(s)
- Prateek Ranjan Yadav
- Department of Chemical Engineering, Indian Institute of Technology, Delhi 110016, India
| | - Diganta Bhusan Das
- Chemical Engineering Department, Loughborough University, Loughborough LE11 3TU, Leicestershire, United Kingdom
| | - Sudip K Pattanayek
- Department of Chemical Engineering, Indian Institute of Technology, Delhi 110016, India.
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26
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3D Printed Hollow Microneedles for Treating Skin Wrinkles Using Different Anti-Wrinkle Agents: A Possible Futuristic Approach. COSMETICS 2023. [DOI: 10.3390/cosmetics10020041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Skin wrinkles are an inevitable phenomenon that is brought about by aging due to the degradation of scleroprotein fibers and significant collagen reduction, which is the fundamental basis of anti-wrinkle technology in use today. Conventional treatments such as lasering and Botulinum toxin have some drawbacks including allergic skin reactions, cumbersome treatment procedures, and inefficient penetration of the anti-wrinkle products into the skin due to the high resistance of stratum corneum. Bearing this in mind, the cosmetic industry has exploited the patient-compliant technology of microneedles (MNs) to treat skin wrinkles, developing several products based on solid and dissolvable MNs incorporated with antiwrinkle formulations. However, drug administration via these MNs is limited by the high molecular weight of the drugs. Hollow MNs (HMNs) can deliver a wider array of active agents, but that is a relatively unexplored area in the context of antiwrinkle technology. To address this gap, we discuss the possibility of bioinspired 3D printed HMNs in treating skin wrinkles in this paper. We compare the previous and current anti-wrinkling treatment options, as well as the techniques and challenges involved with its manufacture and commercialization.
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27
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Min HS, Kim Y, Nam J, Ahn H, Kim M, Kang G, Jang M, Yang H, Jung H. Shape of dissolving microneedles determines skin penetration ability and efficacy of drug delivery. BIOMATERIALS ADVANCES 2023; 145:213248. [PMID: 36610239 DOI: 10.1016/j.bioadv.2022.213248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/28/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Dissolving microneedles (DMNs) are used for minimally invasive transdermal drug delivery. Dissolution of drugs is achieved in the body after skin penetration by DMNs. Unlike injections, the insertion depth of the DMN is an important issue because the amount of dissolved DMN in the skin determines the amount of drug delivered. Therefore, the inaccurate drug delivery due to the incomplete insertion is one of the limitations of the DMN. Thus, many insertion and penetration tests have been essentially conducted in DMN studies, yet only incomplete insertion is known and the exact standard for how much it is not inserted is still unknown. Moreover, there are various shapes have been introduced in the microneedle field, there have been only few studies that have compared and evaluated the insertion depth of the shapes. Here, we present an intensive approach for DMN insertion based on DMN shape among various insertion deciding factors. We numerically analyzed the volumetric distribution of three types of DMN shapes: conical-shaped DMN, funnel-shaped DMN, and candlelit-shaped DMN, and introduced a new insertion evaluation criterion while covering previous insertion evaluations. Using optical coherence tomography, the images of DMNs embedded in the skin were analyzed in rea l-time, and the amount of drug delivered was analyzed at sectioned depth with a cryotome. The in vitro data confirmed that the insertion depth differed based on shape, and the resulting drug delivery depended on the volume assigned to the insertion depth. Insulin-loaded DMNs were applied to C57BL/6 mice, and the results of pharmacokinetic and pharmacodynamic analyses supported the results of the in vitro analysis. Our approach, which considers the correlation between DMN shape and insertion depth, will contribute to establishing criteria for various DMN design and maximizing drug delivery.
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Affiliation(s)
- Hye Su Min
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Youseong Kim
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Jeehye Nam
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Hyeri Ahn
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Minkyung Kim
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Geonwoo Kang
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, South Korea
| | - Mingyu Jang
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, South Korea
| | - Huisuk Yang
- Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, South Korea
| | - Hyungil Jung
- Department of Biotechnology, Building 123, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea; Juvic Inc., 272 Digital-ro, Guro-gu, Seoul 08389, South Korea.
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28
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Pillai MM, Ajesh S, Tayalia P. Two-photon polymerization based reusable master template to fabricate polymer microneedles for drug delivery. MethodsX 2023; 10:102025. [PMID: 36793674 PMCID: PMC9922965 DOI: 10.1016/j.mex.2023.102025] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 01/17/2023] [Indexed: 01/24/2023] Open
Abstract
Microneedle patches have been widely used in a minimally invasive manner for various drug delivery applications. However, for developing these microneedle patches, master molds are required, which are generally made of metal and are very expensive. Two-photon polymerization (2PP) technique can be used for fabricating microneedles more precisely and at a much lower cost. This study reports a novel strategy for developing microneedle master templates using the 2PP method. The main advantage of this technique is that there is no requirement for post-processing after laser writing, and that for the fabrication of polydimethylsiloxane (PDMS) molds, harsh chemical treatments such as silanization are not required. This is a one-step process for manufacturing of microneedle templates which allows easy replication of negative PDMS molds. This is done by adding resin to the master-template and annealing at a specific temperature, thereby making the PDMS peel-off easy and allowing re-use of the master template multiple times. Using this PDMS mold, two types of polyvinyl alcohol (PVA)-rhodamine (RD) microneedle patches were developed, namely, dissolving (D-PVA) and hydrogel (H-PVA) patches and were characterized using suitable techniques. This technique is affordable, efficient and does not require post-processing for development of microneedle templates required for drug delivery applications.•Two photon polymerization can be used for cost-effective fabrication of polymer microneedles for transdermal drug delivery.•Post-processing or surface-modification procedures are not required for these master templates.•Using a simple annealing step, the master template becomes reusable and robust for peeling off polymers like PDMS.
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Affiliation(s)
- Mamatha M. Pillai
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, India
| | - Saranya Ajesh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, India
| | - Prakriti Tayalia
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, India
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29
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Formulation Development of Fast Dissolving Microneedles Loaded with Cubosomes of Febuxostat: In Vitro and In Vivo Evaluation. Pharmaceutics 2023; 15:pharmaceutics15010224. [PMID: 36678853 PMCID: PMC9863705 DOI: 10.3390/pharmaceutics15010224] [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: 11/17/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
Febuxostat is a widely prescribed drug for the treatment of gout, which is a highly prevalent disease worldwide and is a major cause of disability in mankind. Febuxostat suffers from several limitations such as gastrointestinal disturbances and low oral bioavailability. Thus, to improve patient compliance and bioavailability, transdermal drug delivery systems of Febuxostat were developed for obtaining enhanced permeation. Cubosomes of Febuxostat were prepared using a bottom-up approach and loaded into a microneedle using a micromolding technique to achieve better permeation through the skin. Optimization of the process and formulation parameters were achieved using our design of experiments. The optimized cubosomes of Febuxostat were characterized for various parameters such as % entrapment efficiency, vesicle size, Polydispersity index, Transmission electron microscopy, in vitro drug release, Small angle X-ray scattering, etc. After loading it in the microneedle it was characterized for dissolution time, axial fracture force, scanning electron microscopy, in vitro drug release, pore closure kinetics, etc. It was also evaluated for various ex vivo characterizations such as in vitro cell viability, ex vivo permeation, ex vivo fluorescence microscopy and histopathology which indicates its safety and better permeation. In vivo pharmacokinetic studies proved enhanced bioavailability compared with the marketed formulation. Pharmacodynamic study indicated its effectiveness in a disease-induced rat model. The developed formulations were then subjected to the stability study, which proved its stability.
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30
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De Decker I, Szabó A, Hoeksema H, Speeckaert M, Delanghe JR, Blondeel P, Van Vlierberghe S, Monstrey S, Claes KEY. Treatment of Hypertrophic Scars with Corticoid-Embedded Dissolving Microneedles. J Burn Care Res 2023; 44:158-169. [PMID: 36318807 DOI: 10.1093/jbcr/irac165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 11/23/2022]
Abstract
Hypertrophic scarring (HTS) is frequently observed after deep dermal and full-thickness skin defects. Local drug delivery in HTS has been shown more effective compared to other (minimally) invasive treatments. Disadvantages being operator-dependency and non-uniform drug distribution. Moreover, injections are painful and difficult when confronted with extensive scars or HTS in children. Corticoid-embedded dissolving microneedles (CEDMN) were developed that provide painless skin penetration and direct dermal drug delivery. Hyaluronic acid-based DMN and CEDMN patches were utilized. Structural analysis was performed via nuclear magnetic resonance (NMR) spectroscopy while gel permeation chromatography (GPC) was applied to determine chain length (molar mass) and dispersity of hyaluronic acid. Mechanical properties were evaluated by compression testing. Five burn victims with HTS were included. For each individual, three comparable scars were chosen. One control scar was left untreated. Two scars were treated with either 600 or 800 µm CEDMN patches. Patients were treated monthly for 4 months. Treatment with 800 µm CEDMN was initiated after 8 weeks. Assessor-blinded POSAS was registered. Hydration, evaporation, color and elasticity were recorded. The physico-chemical characterization suggests that the mechanical properties enable skin penetration and adequate drug delivery. Patients experienced the therapy as painless. According to the POSAS, all scars improved over time. However, the scars that were treated with CEDMN patches improved faster and with increased increment. The 800 µm CEDMN ensured the fastest POSAS-decrease. Hyaluronic acid-based CEDMN patches are valuable alternatives to intracicatrical injections, as they offer a painless and effective method for administering corticosteroids in HTS.
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Affiliation(s)
- Ignace De Decker
- Burn Center, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium.,Department of Plastic Surgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
| | - Anna Szabó
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000, Belgium
| | - Henk Hoeksema
- Burn Center, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium.,Department of Plastic Surgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
| | | | - Joris R Delanghe
- Department of Diagnostic Sciences, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
| | - Phillip Blondeel
- Burn Center, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium.,Department of Plastic Surgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Center of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000, Belgium
| | - Stan Monstrey
- Burn Center, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium.,Department of Plastic Surgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
| | - Karel E Y Claes
- Burn Center, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium.,Department of Plastic Surgery, Ghent University Hospital, C. Heymanslaan 10, 9000, Belgium
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31
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Mechanistic modeling-guided optimization of microneedle-based skin patch for rapid transdermal delivery of naloxone for opioid overdose treatment. Drug Deliv Transl Res 2023; 13:320-338. [PMID: 35879533 DOI: 10.1007/s13346-022-01202-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2022] [Indexed: 12/13/2022]
Abstract
Naloxone, an FDA-approved opioid inhibitor, used to reverse opioid overdose complications has up till date faced challenges associated with its delivery. Limitations include the use of invasive delivery forms and the need for frequent redosing due to its short half-life. The goal of the current study was to design a transdermal rapidly dissolving polymeric microneedle (MN) patch with delivery and pharmacokinetic properties comparable to that seen with the commercially available NAL products, eliminating their delivery limitations. Patches of varying dimensions (500 µm; 100 array,800 µm; 100array, and 600 µm; 225 array) were fabricated to evaluate the effect of increasing MN length, and density (no. of needles/unit area) on drug release. Drug dose in each of these patches was 17.89 ± 0.23 mg, 17.2 ± 0.77 mg, and 17.8 ± 1.01 mg, respectively. Furthermore, the insertion efficiency of each of the MN patches was 94 ± 4.8%, 90.6 ± 1.69%, and 96 ± 1.29%, respectively. Compared to passive permeation, a reduced lag time of about 5-15 min was observed with a significant drug flux of 15.09 ± 7.68 g[Formula: see text]/cm2/h seen in the first 1 h (p < 0.05) with the array of 100 needles (500 µm long). Over 24 h, a four and ten-fold increase in permeation was seen with the longer length and larger density MN patch, respectively, when compared to the 500 µm (100 array) patch. Model simulations and analyses revealed the significance of needle base diameter and needle count in improving systemic pharmacokinetics of NAL.
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32
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Preparation of particle-attached microneedles using a dry coating process. J Control Release 2022; 351:1003-1016. [DOI: 10.1016/j.jconrel.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 11/19/2022]
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33
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Solid microneedle assisted transepidermal delivery of iloperidone loaded film: Characterization and Skin deposition studies. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Drug delivery with dissolving microneedles: Skin puncture, its influencing factors and improvement strategies. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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35
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McGlynn E, Walton F, Das R, Heidari H. Neural microprobe modelling and microfabrication for improved implantation and mechanical failure mitigation. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2022; 380:20210007. [PMID: 35658676 PMCID: PMC9168446 DOI: 10.1098/rsta.2021.0007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Careful design and material selection are the most beneficial strategies to ensure successful implantation and mitigate the failure of a neural probe in the long term. In order to realize a fully flexible implantable system, the probe should be easily manipulated by neuroscientists, with the potential to bend up to 90°. This paper investigates the impact of material choice, probe geometry, and crucially, implantation angle on implantation success through finite-element method simulations in COMSOL Multiphysics followed by cleanroom microfabrication. The designs introduced in this paper were fabricated using two polyimides: (i) PI-2545 as a release layer and (ii) photodefinable HD-4110 as the probe substrate. Four different designs were microfabricated, and the implantation tests were compared between an agarose brain phantom and lamb brain samples. The probes were scanned in a 7 T PharmaScan MRI coil to investigate potential artefacts. From the simulation, a triangular base and 50 µm polymer thickness were identified as the optimum design, which produced a probe 57.7 µm thick when fabricated. The probes exhibit excellent flexibility, exemplified in three-point bending tests performed with a DAGE 4000Plus. Successful implantation is possible for a range of angles between 30° and 90°. This article is part of the theme issue 'Advanced neurotechnologies: translating innovation for health and well-being'.
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Affiliation(s)
- Eve McGlynn
- Microelectronics Lab (meLAB), James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Finlay Walton
- Microelectronics Lab (meLAB), James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Rupam Das
- Microelectronics Lab (meLAB), James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Hadi Heidari
- Microelectronics Lab (meLAB), James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
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36
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Ali M, Namjoshi S, Benson HAE, Mohammed Y, Kumeria T. Dissolvable polymer microneedles for drug delivery and diagnostics. J Control Release 2022; 347:561-589. [PMID: 35525331 DOI: 10.1016/j.jconrel.2022.04.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
Dissolvable transdermal microneedles (μND) are promising micro-devices used to transport a wide selection of active compounds into the skin. To provide an effective therapeutic outcome, μNDs must pierce the human stratum corneum (~10 to 20 μm), without rupturing or bending during penetration, then release their cargo at the predetermined area and time. The ability of dissolvable μND arrays/patches to sufficiently pierce the skin is a crucial requirement, which depends on the material composition, μND geometry and fabrication techniques. This comprehensive review not only provides contemporary knowledge on the μND design approaches, but also the materials science facilitating these delivery systems and the opportunities these advanced materials can provide to enhance clinical outcomes.
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Affiliation(s)
- Masood Ali
- Therapeutics Research Group, The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Brisbane, QLD 4102, Australia
| | - Sarika Namjoshi
- Therapeutics Research Group, The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Brisbane, QLD 4102, Australia; Vaxxas Pty Ltd, Brisbane, Woolloongabba, QLD 4102, Australia
| | - Heather A E Benson
- Curtin Medical School, Curtin University, Bentley, WA 6102, Australia; UniSA Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia; Basil Hetzel institute for Translational Health Research, Adelaide, SA 5001, Australia.
| | - Yousuf Mohammed
- Therapeutics Research Group, The University of Queensland Diamantina Institute, Faculty of Medicine, University of Queensland, Brisbane, QLD 4102, Australia.
| | - Tushar Kumeria
- School of Materials Science and Engineering, The University of New South Wales, Sydney. NSW 2052, Australia; Australian Centre for Nanomedicine, The University of New South Wales, Sydney, NSW 2052, Australia; School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
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37
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Üner B, Özdemir S, Taş Ç, Özsoy Y, Üner M. Development of Lipid Nanoparticles for Transdermal Loteprednol Etabonate Delivery. J Microencapsul 2022; 39:327-340. [PMID: 35583383 DOI: 10.1080/02652048.2022.2079744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM Loteprednol etabonate (LE) is a new generation corticosteroid that is used for the treatment of inflammatory and allergic conditions of the eye. Therefore, solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) were attempted to improve for transdermal LE delivery for the first time. METHODS SLN and NLC were produced by hot homogenization and ultrasonication technique. Their physical stability was monitored for 3 months of storage. Drug release and permeation of SLN and NLC through the porcine skin were investigated. RESULTS It was determined that SLN and NLC mean particle size as 139.1 nm had a homogeneous particle size distribution (∼0,169 PI) and mean charge as -23.6. They were found to be stable both physically and chemically at room temperature. CONCLUSION SLN and NLC formulations of LE can be stated among the systems that can be an alternative to conventional systems with less side-effect in the treatment of inflammatory problems.
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Affiliation(s)
- Burcu Üner
- Istanbul University, Institute of Graduate Studies in Health Sciences, Fatih, 34126 Istanbul, Turkey.,Yeditepe University, Faculty of Pharmacy, Atasehir 34755, Istanbul, Turkey
| | - Samet Özdemir
- Istanbul Health and Technology University, Faculty of Pharmacy, Zeytinburnu 34010, Istanbul, Turkey
| | - Çetin Taş
- Yeditepe University, Faculty of Pharmacy, Atasehir 34755, Istanbul, Turkey
| | - Yıldız Özsoy
- Istanbul University, Faculty of Pharmacy, Beyazıt, 34116 Istanbul, Turkey
| | - Melike Üner
- Istanbul University, Faculty of Pharmacy, Beyazıt, 34116 Istanbul, Turkey
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38
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Ranjan Yadav P, Iqbal Nasiri M, Vora LK, Larrañeta E, Donnelly RF, Pattanayek SK, Bhusan Das D. Super-swelling Hydrogel-forming Microneedle based Transdermal Drug Delivery: Mathematical Modelling, Simulation and Experimental Validation. Int J Pharm 2022; 622:121835. [PMID: 35597393 DOI: 10.1016/j.ijpharm.2022.121835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 11/29/2022]
Abstract
Super-swelling hydrogel-forming microneedles (HFMNs) based transdermal drug delivery (TDD) is gaining significant interest due to their non-invasiveness and ability to deliver a wide range of drugs. The HFMNs swell by imbibing interstitial skin fluid (ISF), and they facilitate drug transport from the reservoir attached at the base into the skin without polymer dissolution. To develop HFMNs for practical applications, a complete understanding of the drug transport mechanism is required, allowing for controlled TDD and geometrical optimisation. A three-phase system consisting of a reservoir, microneedle, and skin is considered. A mathematical model is developed to incorporate the drug binding within the matrix of the compartment, which was not considered earlier. Super-swelling nature of the HFMNs is incorporated through the swelling ratio obtained experimentally for a polymer. The results are validated with in vitro diffusion studies of ibuprofen sodium (IBU) across excised porcine skin, showing that around 20% of the loaded IBU in lyophilised wafer was delivered in 24 hours. It was observed that increasing IBU solubility in reservoir can achieve high drug transport across the skin. The developed model is shown to be in good agreement with the experimental data. It is concluded that the proposed model can be considered a tool with predictive design and development of super-swelling HFMNs based TDD systems.
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Affiliation(s)
- Prateek Ranjan Yadav
- Chemical Engineering Department, Indian Institute of Technology, Delhi 110016, India
| | - Muhammad Iqbal Nasiri
- Hamdard Institute of Pharmaceutical Sciences, Hamdard University, Islamabad Campus, 44000 Pakistan; School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Lalitkumar K Vora
- School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Eneko Larrañeta
- School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Sudip K Pattanayek
- Chemical Engineering Department, Indian Institute of Technology, Delhi 110016, India.
| | - Diganta Bhusan Das
- Chemical Engineering Department, Loughborough University, Loughborough LE11 3TU, Leicestershire, United Kingdom.
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39
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Yılmaz YZ, Tüten A, Çakan D, Kara E, Akşahin E, Gülmez ZD, Batıoğlu-Karaaltın A. The Relationship Between the Presence of Severe Acute Respiratory Syndrome-Coronavirus-2 during Pregnancy and Neonatal Hearing Loss. ISTANBUL MEDICAL JOURNAL 2022. [DOI: 10.4274/imj.galenos.2022.83707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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40
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Nazary Abrbekoh F, Salimi L, Saghati S, Amini H, Fathi Karkan S, Moharamzadeh K, Sokullu E, Rahbarghazi R. Application of microneedle patches for drug delivery; doorstep to novel therapies. J Tissue Eng 2022; 13:20417314221085390. [PMID: 35516591 PMCID: PMC9065468 DOI: 10.1177/20417314221085390] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/17/2022] [Indexed: 12/14/2022] Open
Abstract
In the past decade, microneedle-based drug delivery systems showed promising approaches to become suitable and alternative for hypodermic injections and can control agent delivery without side effects compared to conventional approaches. Despite these advantages, the procedure of microfabrication is facing some difficulties. For instance, drug loading method, stability of drugs, and retention time are subjects of debate. Besides, the application of novel refining fabrication methods, types of materials, and instruments are other issues that need further attention. Herein, we tried to summarize recent achievements in controllable drug delivery systems (microneedle patches) in vitro and in vivo settings. In addition, we discussed the influence of delivered drugs on the cellular mechanism and immunization molecular signaling pathways through the intradermal delivery route. Understanding the putative efficiency of microneedle patches in human medicine can help us develop and design sophisticated therapeutic modalities.
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Affiliation(s)
| | - Leila Salimi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepideh Saghati
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Amini
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sonia Fathi Karkan
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Keyvan Moharamzadeh
- Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Emel Sokullu
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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41
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Mansoor I, Eassa HA, Mohammed KHA, Abd El-Fattah MA, Abdo MH, Rashad E, Eassa HA, Saleh A, Amin OM, Nounou MI, Ghoneim O. Microneedle-Based Vaccine Delivery: Review of an Emerging Technology. AAPS PharmSciTech 2022; 23:103. [PMID: 35381906 PMCID: PMC8982652 DOI: 10.1208/s12249-022-02250-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/06/2022] [Indexed: 12/23/2022] Open
Abstract
Vaccination has produced a great improvement to the global health by decreasing/eradicating many infectious diseases responsible for significant morbidity and mortality. Thanks to vaccines, many infections affecting childhood have been greatly decreased or even eradicated (smallpox, measles, and polio). That is why great efforts are made to achieve mass vaccination against COVID-19. However, developed vaccines face many challenges with regard to their safety and stability. Moreover, needle phobia could prevent a significant proportion of the population from receiving vaccines. In this context, microneedles (MNs) could potentially present a solution to address these challenges. MNs represent single dose administration systems that do not need reconstitution or cold-chain storage. Being self-administered, pain-free, and capable of producing superior immunogenicity makes them a more attractive alternative. This review explores microneedles’ types, safety, and efficacy in vaccine delivery. Preclinical and clinical studies for microneedle-based vaccines are discussed and patent examples are included.
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42
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Chen YH, Wang FY, Chan YS, Huang C, Huang YY. Biofabricating hollow microneedle array with controllable microstructure for cell transplantation. J Biomed Mater Res B Appl Biomater 2022; 110:1997-2005. [PMID: 35294097 DOI: 10.1002/jbm.b.35054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/04/2021] [Accepted: 11/13/2021] [Indexed: 11/11/2022]
Abstract
Microneedles improve upon the direct injection method by piercing the epidermis to create microchannels for drug delivery in a painless and minimally invasive way. With these microchannels, large macromolecules can penetrate the skin barrier to reach the underlying target tissue. In this study, poly(methyl methacrylate) (PMMA) hollow microneedles (HMN) arrays were fabricated to transplant cells. The result showed that HMN arrays have good biocompatibility. Human epidermal melanocytes and follicle dermal papilla cells were shown to be successfully delivered to acellular porcine skin tissue. Similarly, human corneal keratocytes and corneal epithelial cells were shown to be successfully delivered to acellular porcine corneal tissue. The delivered cells proliferated and penetrated into the tissue. This system may have the potential in the application of cell delivery or cell transplantation.
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Affiliation(s)
- Ying-Hou Chen
- Department of Biomedical Engineering, College of Engineering, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Fang-Ying Wang
- Department of Biomedical Engineering, College of Engineering, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Dermatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yong-Shi Chan
- Department of Biomedical Engineering, College of Engineering, College of Medicine, National Taiwan University, Taipei, Taiwan
| | | | - Yi-You Huang
- Department of Biomedical Engineering, College of Engineering, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Biomedical Engineering, National Taiwan University Hospital, Taipei, Taiwan
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43
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Cai Y, Huang S, Zhang Z, Zhang J, Zhu X, Chen X, Ding X. Bioinspired Rotation Microneedles for Accurate Transdermal Positioning and Ultraminimal-Invasive Biomarker Detection with Mechanical Robustness. RESEARCH 2022; 2022:9869734. [PMID: 35350471 PMCID: PMC8924791 DOI: 10.34133/2022/9869734] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/06/2022] [Indexed: 11/06/2022]
Abstract
Microneedle permits transdermal biosensing and drug delivery with minor pain. However, accurate microneedle transdermal positioning with minimal skin deformation remains a significant technical challenge due to inhomogeneous skin topology and discontinuous force applied to the microneedle. Here, we introduce bioinspired rotation microneedles for in vivo accurate microneedle positioning as inspired by honeybees’ stingers. We demonstrate the benefits of rotation microneedles in alleviating skin resistance through finite element analysis, full-thickness porcine validations, and mathematical derivations of microneedle-skin interaction stress fields. The max penetration force was mitigated by up to 45.7% and the force attenuation rate increased to 2.73 times in the holding stage after penetration. A decrease in max skin deflection and a faster deformation recovery introduced by rotation microneedles implied a more precise penetration depth. Furthermore, we applied the rotation microneedles in psoriasis mice, a monogenic disorder animal model, for minimally invasive biological sample extraction and proinflammatory cytokine monitoring. An ultrasensitive detection method is realized by using only one microneedle to achieve cytokine mRNA level determination compared to commonly required biopsies or blood collection. Thus, rotation microneedles permit a simple, rapid, and ultraminimal-invasive method for subcutaneous trace biological sample acquisition and subsequent point-of-care diagnostics with minimal damage to both microneedles and skins.
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Affiliation(s)
- Yilin Cai
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shiyi Huang
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Zhinan Zhang
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiazheng Zhang
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xingyue Zhu
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoxiang Chen
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xianting Ding
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
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44
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Ebrahiminejad V, Faraji Rad Z, Prewett PD, Davies GJ. Fabrication and testing of polymer microneedles for transdermal drug delivery. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:629-640. [PMID: 35874440 PMCID: PMC9273988 DOI: 10.3762/bjnano.13.55] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/30/2022] [Indexed: 05/19/2023]
Abstract
Microneedle (MN) patches have considerable potential for medical applications such as transdermal drug delivery, point-of-care diagnostics, and vaccination. These miniature microdevices should successfully pierce the skin tissues while having enough stiffness to withstand the forces imposed by penetration. Developing low-cost and simple manufacturing processes for MNs is of considerable interest. This study reports a simple fabrication process for thermoplastic MNs from cycloolefin polymers (COP) using hot embossing on polydimethylsiloxane (PDMS) soft molds. COP has gained interest due to its high molding performance and low cost. The resin master MN arrays (9 × 9) were fabricated using two-photon polymerization (TPP). A previous gap in the detailed characterization of the embossing process was investigated, showing an average of 4.99 ± 0.35% longitudinal shrinkage and 2.15 ± 0.96% lateral enlargement in the molded MN replicas. The effects of bending, buckling, and tip blunting were then examined using compression tests and also theoretically. MN array insertion performance was studied in vitro on porcine back skin using both a prototype custom-made applicator and a commercial device. An adjustable skin stretcher mechanism was designed and manufactured to address current limitations for mimicking skin in vivo conditions. Finite element analysis (FEA) was developed to simulate single MN insertion into a multilayered skin model and validated experimentally using a commercial Pen Needle as a model for the thermoplastic MNs. Margins of safety for the current MN design demonstrated its potential for transdermal drug delivery and fluid sampling. Experimental results indicated significant penetration improvements using the prototype applicator, which produced array penetration efficiencies as high as >92%, depending on the impact velocity setting.
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Affiliation(s)
- Vahid Ebrahiminejad
- School of Engineering, University of Southern Queensland, Springfield Central, QLD 4300, Australia
| | - Zahra Faraji Rad
- School of Engineering, University of Southern Queensland, Springfield Central, QLD 4300, Australia
| | - Philip D Prewett
- Department of Mechanical Engineering, University of Birmingham, Birmingham B15 2TT, United Kingdom
- Oxacus Ltd., Dorchester-on-Thames, OX10 7HN, United Kingdom
| | - Graham J Davies
- Faculty of Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- College of Engineering & Physical Sciences, School of Engineering, University of Birmingham, Birmingham, B15 2TT, United Kingdom
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45
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Xenikakis I, Tsongas K, Tzimtzimis EK, Katsamenis OL, Demiri E, Zacharis CK, Georgiou D, Kalogianni EP, Tzetzis D, Fatouros DG. Transdermal delivery of insulin across human skin in vitro with 3D printed hollow microneedles. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102891] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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46
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Swellable microneedles based transdermal drug delivery: Mathematical model development and numerical experiments. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Shu W, Heimark H, Bertollo N, Tobin DJ, O'Cearbhaill ED, Annaidh AN. Insights into the mechanics of solid conical microneedle array insertion into skin using the finite element method. Acta Biomater 2021; 135:403-413. [PMID: 34492370 DOI: 10.1016/j.actbio.2021.08.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022]
Abstract
In order to develop optimum microneedle designs, researchers must first develop robust, repeatable and adaptable test methods which are representative of in vivo conditions. However, there is a lack of experimental tools which can accurately comparatively interrogate functional microneedle penetration of tissue. In this study, we seek to develop a state of the art finite element model of microneedle insertion into and penetration of human skin. The developed model employs a 3D hyperelastic, anisotropic pre-stressed multi-layered material which more accurately reflects in vivo skin conditions, while the microneedle is modeled as an array, which can capture the influence of adjacent microneedles on the overall response. Using the developed finite element model, we highlight the importance of accurate computational modeling which can decipher the mechanics of microneedle insertion, including the influence of its position within an array and how it correlates well with experimental observations. In particular, we have concluded that, for our model microneedle array, increasing skin pretension from 0 to 10% strain reduces the penetration force by 13%, ultimate local deformation about the microneedle by 22% and the ultimate penetration efficiency by 15%. We have also concluded that the presence of a base plate limits the penetration efficiency by up to 24%, while the penetration efficiency across a 5 × 1 microneedle array may vary by 27%. This model elucidates, for the first time, the combined effects of skin tension and needle geometry on accurately predicting microneedle penetration efficiency. STATEMENT OF SIGNIFICANCE: Microneedles arrays (MNAs) are medical devices with microscale protrusions, typically designed to penetrate the outermost layer of the skin, that upon optimisation, could lead to disruptive minimally-invasive disease management. However, the mechanics of MNA insertion are complex, due in part to a 'bed of nails' effect, and difficult to elucidate experimentally. Therefore, comparisons between designs, functional assessment of production batches and ultimately the likelihood of clinical translation are challenging to predict. Here, we have develop the most sophisticated in silico model of MNA insertion into pre-tensioned human skin to predict the extent of MNA penetration and therefore the likelihood of successful therapeutic delivery. Researchers can customise this model to predict the penetration efficiency of any MNA design.
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Affiliation(s)
- Wenting Shu
- UCD Centre for Biomedical Engineering, University College Dublin, Belfield Dublin 4, Ireland; School of Mechanical & Materials Engineering, University College Dublin, Belfield Dublin 4, Ireland
| | - Helen Heimark
- UCD Centre for Biomedical Engineering, University College Dublin, Belfield Dublin 4, Ireland; School of Mechanical & Materials Engineering, University College Dublin, Belfield Dublin 4, Ireland
| | - Nicky Bertollo
- UCD Centre for Biomedical Engineering, University College Dublin, Belfield Dublin 4, Ireland; School of Mechanical & Materials Engineering, University College Dublin, Belfield Dublin 4, Ireland
| | - Desmond J Tobin
- UCD Charles Institute of Dermatology, School of Medicine, University College Dublin, Belfield Dublin 4, Ireland
| | - Eoin D O'Cearbhaill
- UCD Centre for Biomedical Engineering, University College Dublin, Belfield Dublin 4, Ireland; School of Mechanical & Materials Engineering, University College Dublin, Belfield Dublin 4, Ireland; UCD Charles Institute of Dermatology, School of Medicine, University College Dublin, Belfield Dublin 4, Ireland; The Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland.
| | - Aisling Ní Annaidh
- UCD Centre for Biomedical Engineering, University College Dublin, Belfield Dublin 4, Ireland; School of Mechanical & Materials Engineering, University College Dublin, Belfield Dublin 4, Ireland; UCD Charles Institute of Dermatology, School of Medicine, University College Dublin, Belfield Dublin 4, Ireland.
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Weimer P, Rossi RC, Koester LS. Dissolving Microneedles Developed in Association with Nanosystems: A Scoping Review on the Quality Parameters of These Emerging Systems for Drug or Protein Transdermal Delivery. Pharmaceutics 2021; 13:pharmaceutics13101601. [PMID: 34683895 PMCID: PMC8538119 DOI: 10.3390/pharmaceutics13101601] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 12/20/2022] Open
Abstract
The largest organ of the body provides the main challenge for the transdermal delivery of lipophilic or high molecular weight drugs. To cross the main barrier of the skin, the stratum corneum, many techniques have been developed and improved. In the last 20 years, the association of microneedles with nanostructured systems has gained prominence for its versatility and for enabling targeted drug delivery. Currently, the combination of these mechanisms is pointed to as an emerging technology; however, some gaps need to be answered to transcend the development of these devices from the laboratory scale to the pharmaceutical market. It is known that the lack of regulatory guidelines for quality control is a hindrance to market conquest. In this context, this study undertakes a scoping review of original papers concerning methods applied to evaluate both the quality and drug/protein delivery of dissolving and hydrogel-forming microneedles developed in association with nanostructured systems.
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Affiliation(s)
- Patrícia Weimer
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90610-000, Brazil;
| | - Rochele Cassanta Rossi
- Programa de Pós-Graduação em Nutrição e Alimentos, Universidade do Vale do Rio dos Sinos (UNISINOS), São Leopoldo 93022-000, Brazil;
| | - Letícia Scherer Koester
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90610-000, Brazil;
- Correspondence: ; Tel.: +55-51-33085278; Fax: +55-51-33085437
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Yan Q, Weng J, Shen S, Wang Y, Fang M, Zheng G, Yang Q, Yang G. Finite Element Analysis for Biodegradable Dissolving Microneedle Materials on Skin Puncture and Mechanical Performance Evaluation. Polymers (Basel) 2021; 13:polym13183043. [PMID: 34577944 PMCID: PMC8467965 DOI: 10.3390/polym13183043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/31/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, a micro-molding technology was used to prepare the microneedles (MNs), while a texture analyzer was used to measure its Young’s modulus, Poisson’s ratio and compression breaking force, to evaluate whether the MNs can penetrate the skin. The effects of different materials were characterized by their ability to withstand stresses using the Structural Mechanics Module of COMSOL Multiphysics. Carboxymethylcellulose (CMC) was chosen as the needle formulation material with varying quantities of polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA) and hyaluronic acid (HA) to adjust the viscosity, brittleness, hardness and solubility of the material. The results of both the experimental tests and the predictions indicated that the hardest tip material had a solids content of 15% (w/w
) with a 1:2 (w/w) CMC: HA ratio. Furthermore, it was shown that a solid content of 10% (w/w) with a 1:5 (w/w) CMC: PVA ratio is suitable for making patches. The correlation between the mechanical properties and the different materials was found using the simulation analysis as well as the force required for different dissolving microneedles (DMNs) to penetrate the skin, which significantly promoted the research progress of microneedle transdermal drug delivery.
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