1
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Yang Y, Sheng C, Dong F, Liu S. An integrated wearable differential microneedle array for continuous glucose monitoring in interstitial fluids. Biosens Bioelectron 2024; 256:116280. [PMID: 38603840 DOI: 10.1016/j.bios.2024.116280] [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: 01/22/2024] [Revised: 04/02/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
Monitoring biomarkers in human interstitial fluids (ISF) using microneedle sensors has been extensively studied. However, most of the previous studies were limited to simple in vitro demonstrations and lacked system integration and analytical performance. Here we report a miniaturized, high-precision, fully integrated wearable electrochemical microneedle sensing device that works with a customized smartphone application to wirelessly and in real-time monitor glucose in human ISF. A microneedle array fabrication method is proposed which enables multiple individually addressable, regionally separated sensing electrodes on a single microneedle system. As a demonstration, a glucose sensor and a differential sensor are integrated in a single sensing patch. The differential sensing electrodes can eliminate common-mode interference signals, thus significantly improving the detection accuracy. The basic mechanism of microneedle penetration into the skin was analyzed using the finite element method (FEM). By optimizing the structure of the microneedle, the puncture efficiency was improved while the puncture force was reduced. The electrochemical properties, biocompatibility, and system stability of the microneedle sensing device were characterized before human application. The test results were closely correlated with the gold standard (blood). The platform can be used not only for glucose detection, but also for various ISF biomarkers, and it expands the potential of microneedle technology in wearable sensing.
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Affiliation(s)
- Yong Yang
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Can Sheng
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Fang Dong
- The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, China.
| | - Sheng Liu
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, China; School of Power and Mechanical Engineering, Wuhan University, Wuhan, 430072, China; School of Microelectronics, Wuhan University, Wuhan, 430072, China.
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2
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Siddharth A, Bhandari A, Singh SS, Udai AD. Effect of twisting of intravitreal injections on ocular bio-mechanics: a novel insight to ocular surgery. Biomech Model Mechanobiol 2024; 23:1013-1030. [PMID: 38361086 DOI: 10.1007/s10237-024-01819-5] [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: 06/16/2023] [Accepted: 01/02/2024] [Indexed: 02/17/2024]
Abstract
Although intravitreal (IVT) injections provide several advantages in treating posterior segment eye diseases, several associated challenges remain. The current study uses the finite element method (FEM) to highlight the effect of IVT needle rotation along the insertion axis on the reaction forces and deformation inside the eye. A comparison of the reaction forces at the eye's key locations has been made with and without rotation. In addition, a sensitivity analysis of various parameters, such as the needle's angular speed, insertion location, angle, gauge, shape, and intraocular pressure (IOP), has been carried out to delineate the individual parameter's effect on reaction forces during rotation. Results demonstrate that twisting the needle significantly reduces the reaction forces at the penetration location and throughout the needle travel length, resulting in quicker penetration. Moreover, ocular biomechanics are influenced by needle insertion location, angle, shape, size, and IOP. The reaction forces incurred by the patient may be reduced by using a bevel needle of the higher gauge when inserted close to the normal of the local scleral surface toward the orra serrata within the Pars Plana region. Results obtained from the current study can deepen the understanding of the twisting needle's interaction with the ocular tissue.
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Affiliation(s)
- Ashish Siddharth
- Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India
| | - Ajay Bhandari
- Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Sarthak S Singh
- Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India
| | - Arun Dayal Udai
- Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
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3
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Yan Q, Shen S, Liu L, Weng J, Zheng G, Dong X, Yang J, Yang Q, Xie J. Fabrication of controlled porous and ultrafast dissolution porous microneedles by organic-solvent-free ice templating method. Int J Pharm 2024:124220. [PMID: 38734274 DOI: 10.1016/j.ijpharm.2024.124220] [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: 03/25/2024] [Revised: 05/02/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024]
Abstract
Porous Microneedles (PMNs) have been widely used in drug delivery and medical diagnosis owing to their abundant interconnected pores. However, the mechanical strength, the use of organic solvent, and drug loading capacity have long been challenging. Herein, a novel strategy of PMNs fabrication based on the Ice Templating Method is proposed that is suitable for insoluble, soluble, and nanosystem drug loading. The preparation process simplifies the traditional microneedle preparation process with a shorter preparation time. It endows the highly tunable porous morphology, enhanced mechanical strength, and rapid dissolution performance. Micro-CT three-dimensional reconstruction was used to better quantify the internal structures of PMNs, and we further established the equivalent pore network model to statistically analyze the internal pore structure parameters of PMNs. In particular, the mechanical strength is mainly negatively correlated with the surface porosity, while the dissolution velocity is mainly positively correlated with the permeability coefficient by the correlation heatmap. The poorly water-soluble Asiatic acid was encapsulated in PMNs in nanostructured lipid carriers, showing prominent hypertrophic scar healing trends. This work offers a quick and easy way of preparation that may be used to expand PMNs function and be introduced in industrial manufacturing development.
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Affiliation(s)
- 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
| | - 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
| | - Linxiao Liu
- 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
| | - Jiaqi Weng
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China; Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, PR China; College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, PR China
| | - Gensuo Zheng
- 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
| | - 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
| | - Jing 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
| | - 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.
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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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Xiao M, Wang Z, An Y, Dai Y, Wang X, Zhu Z. Fabrication and mechanical modelling of dissolvable PVA/PVP composite microneedles with biocompatibility for efficient transdermal delivery of ibuprofen. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024:1-16. [PMID: 38590076 DOI: 10.1080/09205063.2024.2333627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/08/2024] [Indexed: 04/10/2024]
Abstract
Microneedles offer minimally invasive, user-friendly, and subcutaneously accessible transdermal drug delivery and have been widely investigated as an effective transdermal delivery system. Ibuprofen is a common anti-inflammatory drug to treat chronic inflammation. It is crucial to develop microneedle patches capable of efficiently delivering ibuprofen through the skin for the effective treatment of arthritis patients requiring repeated medication. In this study, the mechanical properties of a new type of polymer microneedle were studied by finite element analysis, and the experimental results showed that the microneedle could effectively deliver drugs through the skin. In addition, a high ibuprofen-loaded microneedle patch was successfully prepared by micromolding and subjected to evaluation of its infrared spectrum morphology and dissolve degree. The morphology of microneedles was characterized by scanning electron microscopy, and the mechanical properties were assessed using a built linear stretching system. In the in-vitro diffusion cell drug release test, the microneedle released 85.2 ± 1.52% (210 ± 3.7 μg) ibuprofen in the modified Franz diffusion within 4 h, exhibiting a higher drug release compared to other drug delivery methods. This study provides a portable, safe and efficient treatment approach for arthritis patients requiring daily repeated medication.
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Affiliation(s)
- Min Xiao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zifeng Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yanru An
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yingqi Dai
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xinghao Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- Xin-Huangpu Joint Innovation Institute of Chinese Medicine, Guangzhou, Guangdong Province, China
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Shi L, Xu J, Zhang L, Zuo W, Ni B, Lai M, Fu M. CFD simulation of cannabidiol delivery through microneedle patches. Comput Methods Biomech Biomed Engin 2024:1-13. [PMID: 38461448 DOI: 10.1080/10255842.2024.2324881] [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: 11/15/2023] [Accepted: 02/24/2024] [Indexed: 03/12/2024]
Abstract
This study investigates the efficiency and influence of microneedle parameters, specifically Needle Point Angle (a) and Needle Height (h), on the diffusion of Cannabidiol (CBD) across varying skin depths. Utilizing the Latin Hypercube Sampling method, twelve distinct cases were analyzed. Observations reveal a consistent high concentration of CBD delivered via the microneedle patch, with a notable decrease in concentration as the depth increases, displaying a non-linear trend. Multivariate polynomial regression offers a quantitative relationship between the variables, with the third-order bivariate fitting providing the most accurate representation. Compared to other CBD delivery mechanisms, microneedle patches present enhanced CBD concentrations, circumventing challenges faced by other methods such as dosage inaccuracy, systemic absorption issues, and CBD degradation. The results highlight the potential of microneedle patches as a promising avenue for optimized transdermal drug delivery.
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Affiliation(s)
- Liqun Shi
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Jianfeng Xu
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Lihua Zhang
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Weiping Zuo
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Binbin Ni
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Mingqiang Lai
- Research Center of Zhejiang Dingtai Pharmaceutical Co., Ltd., Tongxiang, China
| | - Maoqi Fu
- College of Pharmacy, Fujian Medical University, Fuzhou, China
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Wang X, Wang Z, Xiao M, Li Z, Zhu Z. Advances in biomedical systems based on microneedles: design, fabrication, and application. Biomater Sci 2024; 12:530-563. [PMID: 37971423 DOI: 10.1039/d3bm01551c] [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: 11/19/2023]
Abstract
Wearable devices have become prevalent in biomedical studies due to their convenient portability and potential utility in biomarker monitoring for healthcare. Accessing interstitial fluid (ISF) across the skin barrier, microneedle (MN) is a promising minimally invasive wearable technology for transdermal sensing and drug delivery. MN has the potential to overcome the limitations of conventional transdermal drug administration, making it another prospective mode of drug delivery after oral and injectable. Subsequently, combining MN with multiple sensing approaches has led to its extensive application to detect biomarkers in ISF. In this context, employing MN platforms and control schemes to merge diagnostic and therapeutic capabilities into theranostic systems will facilitate on-demand therapy and point-of-care diagnostics, paving the way for future MN technologies. A comprehensive analysis of the growing advances of microneedles in biomedical systems is presented in this review to summarize the latest studies for academics in the field and to offer for reference the issues that need to be addressed in MN application for healthcare. Covering an array of novel studies, we discuss the following main topics: classification of microneedles in the biomedical field, considerations of MN design, current applications of microneedles in diagnosis and therapy, and the regulatory landscape and prospects of microneedles for biomedical applications. This review sheds light on the significance of microneedle-based innovations, presenting an analysis of their potential implications and contributions to the community of wearable healthcare technologies. The review provides a comprehensive understanding of the field's current state and potential, making it a valuable resource for academics and clinicians seeking to harness the full potential of MN applications.
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Affiliation(s)
- Xinghao Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China.
| | - 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.
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China.
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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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Zhang W, Cai X, Zhang X, Zou S, Zhu D, Zhang Q, Chen J. AgNPs-Modified Polylactic Acid Microneedles: Preparation and In Vivo/In Vitro Antimicrobial Studies. Pharm Res 2024; 41:93-104. [PMID: 37985572 DOI: 10.1007/s11095-023-03634-6] [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: 09/27/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVE To prepare polylactic acid microneedles (PLAMNs) with sustained antibacterial effect to avoid skin infection caused by traditional MNs-based biosensors. METHODS Silver nanoparticles (AgNPs) were synthesized using an in-situ reduction process with polydopamine (PDA). PLAMNs were fabricated using the hot-melt method. A series of pressure tests and puncture experiments were conducted to confirm the physicochemical properties of PLAMNs. Then AgNPs were modified on the surface of PLAMNs through in-situ reduction of PDA, resulting in the formation of PLAMNs@PDA-AgNPs. The in vitro antibacterial efficacy of PLAMNs@PDA-AgNPs was evaluated using agar diffusion assays and bacterial liquid co-culture approach. Wound healing and simulated long-term application were performed to assess the in vivo antibacterial effectiveness of PLAMNs@PDA-AgNPs. RESULTS The MNs array comprised 169 tiny needle tips in pyramidal rows. Strength and puncture tests confirmed a 100% puncture success rate for PLAMNs on isolated rat skin and tin foil. SEM analysis revealed the integrity of PLAMNs@PDA-AgNPs with the formation of new surface substances. EDS analysis indicated the presence of silver elements on the surface of PLAMNs@PDA-AgNPs, with a content of 14.44%. Transepidermal water loss (TEWL) testing demonstrated the rapid healing of micro-pores created by PLAMNs@PDA-AgNPs, indicating their safety. Both in vitro and in vivo tests confirmed antibacterial efficacy of PLAMNs@PDA-AgNPs. CONCLUSIONS In conclusion, the sustained antibacterial activity exhibited by PLAMNs@PDA-AgNPs offers a promising solution for addressing skin infections associated with MN applications, especially when compared to traditional MN-based biosensors. This advancement offers significant potential for the field of MN technology.
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Affiliation(s)
- Wenqin Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, 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
| | - Xinyi Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
- School of Pharmacy and Medical Technology, Putian University, Putian, 351100, China
| | - Shiqi Zou
- School of Pharmacy and Medical Technology, Putian University, Putian, 351100, China
| | - Danhong Zhu
- School of Pharmacy and Medical Technology, Putian University, Putian, 351100, China
| | - Qiulong Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
- School of Pharmacy and Medical Technology, Putian University, Putian, 351100, China
- Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Putian, 351100, China
| | - Jianmin Chen
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
- School of Pharmacy and Medical Technology, Putian University, Putian, 351100, China.
- Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Putian, 351100, China.
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Guo P, Huang C, Yang Q, Zhong G, Zhang J, Qiu M, Zeng R, Gou K, Zhang C, Qu Y. Advances in Formulations of Microneedle System for Rheumatoid Arthritis Treatment. Int J Nanomedicine 2023; 18:7759-7784. [PMID: 38144510 PMCID: PMC10743780 DOI: 10.2147/ijn.s435251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 12/05/2023] [Indexed: 12/26/2023] Open
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic joint inflammation, eventually leading to severe disability and premature death. At present, the treatment of RA is mainly to reduce inflammation, swelling, and pain. Commonly used drugs are non-steroidal anti-inflammatory drugs (NSAIDs), glucocorticoids, and disease-modifying anti-rheumatic drugs (DMARDs). These drugs lack specificity and require long-term, high-dose administration, which can cause serious adverse effects. In addition, the oral, intravenous, and intra-articular injections will reduce patient compliance, resulting in high cost and low bioavailability. Due to these limitations, microneedles (MNs) have emerged as a new strategy to efficiently localize the drugs in inflamed joints for the treatment of RA. MNs can overcome the cuticle barrier of the skin without stimulating nerves and blood vessels. Which can increase patient compliance, improve bioavailability, and avoid systemic circulation. This review summarizes and evaluates the application of MNs in RA, especially dissolving MNs (DMNs). We encourage the use of MNs to treat RA, by describing the general properties of MNs, materials, preparation technology, drug release mechanism, and advantages. Furthermore, we discussed the biological safety, development prospects, and future challenges of MNs, hoping to provide a new strategy for the treatment of RA.
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Affiliation(s)
- Peng Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Chi Huang
- Department of Pharmacy, Jiang’an Hospital of Traditional Chinese Medicine, Yibin, 644200, People’s Republic of China
| | - Qin Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Guofeng Zhong
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Junbo Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Mengyu Qiu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Rui Zeng
- Institute of Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, People’s Republic of China
| | - Kaijun Gou
- Institute of Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, People’s Republic of China
| | - Chen Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
| | - Yan Qu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People’s Republic of China
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11
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Fratus M, Alam MA. Performance gain and electro-mechanical design optimization of microneedles for wearable sensor systems. Biomed Microdevices 2023; 26:4. [PMID: 38095755 DOI: 10.1007/s10544-023-00683-x] [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] [Accepted: 11/15/2023] [Indexed: 12/18/2023]
Abstract
Minimally invasive microneedle (MN) is an emerging technology platform for wearable and implantable diagnostics and therapeutics systems. These short MNs offer pain-free insertion and simple operation. Among the MN technologies proposed to enhance interstitial fluid (ISF) extraction, porous and swellable (P-S) hydrogels absorb analyte molecules across the entire lateral surface. Currently, the design, development, and optimization of the MNs rely on empirical, iterative approaches. Based on theory of fluid flow and analyte diffusion through geometrically complex biomimetic systems, here we derive a generalized physics-guided model for P-S MN sensors. The framework (a) quantifies MN extracting efficiency [Formula: see text] in terms of its geometric and physical properties, and (b) suggests strategies to optimize sensor response while satisfying the mechanical constraints related to various skin-types (e.g., mouse, pig, humans, etc.). Our results show that, despite the differences in geometry and composition, P-S MNs obey a universal scaling response, [Formula: see text] with [Formula: see text] being MN length, diffusivity, and radius, respectively, and [Formula: see text], [Formula: see text] and [Formula: see text] are the ratio between approximate vs. exact analytical solutions, the effective biofluid transfer coefficient between dermis and skin, and the exponent for the power-law approximation, respectively. These parameters quantify the biomolecule transfer through the dermis-to-MN interface at different scaling limits. P-S MNs outperform hollow MNs by a 2-6x enhancement factor; however, the buckling-limit of insertion defines the maximized functionality of the sensor. Our model, validated against experimental results and numerical simulations, offers a predictive design framework to significantly reduce the optimization time for P-S MN-based sensor platforms.
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Affiliation(s)
- Marco Fratus
- Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, 47906, Indiana, USA.
| | - Muhammad Ashraful Alam
- Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, 47906, Indiana, USA
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12
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Yuan Y, Han Y, Yap CW, Kochhar JS, Li H, Xiang X, Kang L. Prediction of drug permeation through microneedled skin by machine learning. Bioeng Transl Med 2023; 8:e10512. [PMID: 38023708 PMCID: PMC10658566 DOI: 10.1002/btm2.10512] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/22/2023] [Accepted: 03/08/2023] [Indexed: 04/07/2023] Open
Abstract
Stratum corneum is the outermost layer of the skin preventing external substances from entering human body. Microneedles (MNs) are sharp protrusions of a few hundred microns in length, which can penetrate the stratum corneum to facilitate drug permeation through skin. To determine the amount of drug delivered through skin, in vitro drug permeation testing is commonly used, but the testing is costly and time-consuming. To address this issue, machine learning methods were employed to predict drug permeation through the skin, circumventing the need of conducting skin permeation experiments. By comparing the experimental data and simulated results, it was found extreme gradient boosting (XGBoost) was the best among the four simulation methods. It was also found that drug loading, permeation time, and MN surface area were critical parameters in the models. In conclusion, machine learning is useful to predict drug permeation profiles for MN-facilitated transdermal drug delivery.
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Affiliation(s)
- Yunong Yuan
- School of Pharmacy, Faculty of Medicine and HealthUniversity of SydneyNew South Wales2006Australia
| | - Yiting Han
- Department of Clinical Pharmacy and Pharmacy Administration, School of PharmacyFudan UniversityShanghai201203China
- Harvard T.H. Chan School of Public Health677 Huntington AvenueBostonMassachusetts02115USA
| | - Chun Wei Yap
- National Healthcare Group1 Fusionopolis LinkSingapore138542Singapore
| | | | - Hairui Li
- MGI Tech21 Biopolis Road, NucleosSingapore138567Singapore
| | - Xiaoqiang Xiang
- Department of Clinical Pharmacy and Pharmacy Administration, School of PharmacyFudan UniversityShanghai201203China
| | - Lifeng Kang
- School of Pharmacy, Faculty of Medicine and HealthUniversity of SydneyNew South Wales2006Australia
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13
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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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14
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Sree VD, Toaquiza-Tubon JD, Payne J, Solorio L, Tepole AB. Damage and Fracture Mechanics of Porcine Subcutaneous Tissue Under Tensile Loading. Ann Biomed Eng 2023; 51:2056-2069. [PMID: 37233856 DOI: 10.1007/s10439-023-03233-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 05/04/2023] [Indexed: 05/27/2023]
Abstract
Subcutaneous injection, which is a preferred delivery method for many drugs, causes deformation, damage, and fracture of the subcutaneous tissue. Yet, experimental data and constitutive modeling of these dissipation mechanisms in subcutaneous tissue remain limited. Here we show that subcutaneous tissue from the belly and breast anatomical regions in the swine show nonlinear stress-strain response with the characteristic J-shaped behavior of collagenous tissue. Additionally, subcutaneous tissue experiences damage, defined as a decrease in the strain energy capacity, as a function of the previously experienced maximum deformation. The elastic and damage response of the tissue are accurately described by a microstructure-driven constitutive model that relies on the convolution of a neo-Hookean material of individual fibers with a fiber orientation distribution and a fiber recruitment distribution. The model fit revealed that subcutaneous tissue can be treated as initially isotropic, and that changes in the fiber recruitment distribution with loading are enough to explain the dissipation of energy due to damage. When tested until failure, subcutaneous tissue that has undergone damage fails at the same peak stress as virgin samples, but at a much larger stretch, overall increasing the tissue toughness. Together with a finite element implementation, these data and constitutive model may enable improved drug delivery strategies and other applications for which subcutaneous tissue biomechanics are relevant.
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Affiliation(s)
- Vivek D Sree
- School of Mechanical Engineering, Purdue University, West Lafayette, USA
| | | | - Jordanna Payne
- School of Mechanical Engineering, Purdue University, West Lafayette, USA
| | - Luis Solorio
- School of Mechanical Engineering, Purdue University, West Lafayette, USA
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15
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Montanari M, Brighenti R, Terzano M, Spagnoli A. Puncturing of soft tissues: experimental and fracture mechanics-based study. SOFT MATTER 2023; 19:3629-3639. [PMID: 37161966 DOI: 10.1039/d3sm00011g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The integrity of soft materials against puncturing is of great relevance for their performance because of the high sensitivity to local rupture caused by rigid sharp objects. In this work, the mechanics of puncturing is studied with respect to a sharp-tipped rigid needle with a circular cross section, penetrating a soft target solid. The failure mode associated with puncturing is identified as a mode-I crack propagation, which is analytically described by a two-dimensional model of the target solid, taking place in a plane normal to the penetration axis. It is shown that the force required for the onset of needle penetration is dependent on two energy contributions, that are, the strain energy stored in the target solid and the energy consumed in crack propagation. More specifically, the force is found to be dependent on the fracture toughness of the material, its stiffness and the sharpness of the penetrating tool. The reference case within the framework of small strain elasticity is first investigated, leading to closed-form toughness parameters related to classical linear elastic fracture mechanics. Then, nonlinear finite element analyses for an Ogden hyperelastic material are presented. Supporting the proposed theoretical framework, a series of puncturing experiments on two commercial silicones is presented. The combined experimental-theoretical findings suggest a simple, yet reliable tool to easily handle and assess safety against puncturing of soft materials.
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Affiliation(s)
- Matteo Montanari
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy.
| | - Roberto Brighenti
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy.
| | - Michele Terzano
- Institute of Biomechanics, Graz University of Technology, Stremayrgasse 16/2, 8010 Graz, Austria
| | - Andrea Spagnoli
- Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy.
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16
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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: 3] [Impact Index Per Article: 3.0] [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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17
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Qiang N, Liu Z, Lu M, Yang Y, Liao F, Feng Y, Liu G, Qiu S. Preparation and Properties of Polyvinylpyrrolidone/Sodium Carboxymethyl Cellulose Soluble Microneedles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093417. [PMID: 37176298 PMCID: PMC10180295 DOI: 10.3390/ma16093417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Transdermal drug delivery is a new means of delivering drugs through the skin to achieve therapeutic effects. Microneedles have several advantages, including low cost, easy self-administration, and high delivery efficiency. Different polymers affect the morphology, mechanical properties, and drug delivery efficiency of microneedles. To study the performance and limitations of microneedles (MNs), we prepared different ratios of polymers. MNs were fabricated from polyvinylpyrrolidone (PVP) and sodium carboxymethyl cellulose (CMC-Na) using the centrifugal molding method. Needle morphology, formability, and other properties of the polymers were evaluated to compare the performances of MNs with different ratios. PVP and CMC-Na were intermixed at different ratios with water as the solvent. The soluble MNs were prepared by mold casting. The morphology, thermodynamic properties, and crystallinity were studied using scanning electron microscopy (SEM), thermogravimetric analysis (TG), differential scanning calorimetric analysis (DSC), and X-ray diffraction (XRD). The results showed that composite microneedles have good thermal stability. Among the different compositions tested, the 10% PVP/2% CMC-Na composite microneedle demonstrated the best performance with a regular surface morphology and relatively high thermal decomposition and melting temperatures. These results indicate that microneedles with appropriate ratios of two different materials possess good formability and other properties.
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Affiliation(s)
- Na Qiang
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Zhu Liu
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Ming Lu
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Yong Yang
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Fangli Liao
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Ying Feng
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Guocong Liu
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Si Qiu
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
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18
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Lechuga Y, Kandel G, Miguel JA, Martinez M. Development of an Automated Design Tool for FEM-Based Characterization of Solid and Hollow Microneedles. MICROMACHINES 2023; 14:133. [PMID: 36677194 PMCID: PMC9861112 DOI: 10.3390/mi14010133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Microneedle design for biomedical applications, such as transdermal drug delivery, vaccination and transdermal biosensing, has lately become a rapidly growing research field. In this sense, finite element analysis has been extendedly used by microneedle designers to determine the most suitable structural parameters for their prototypes, and also to predict their mechanical response and efficiency during the insertion process. Although many proposals include computer-aided tools to build geometrical models for mechanical analysis, there is a lack of software utilities intended to automate the design process encompassing geometrical modeling, simulation setup and postprocessing of results. This work proposes a novel MATLAB-based design tool for microneedle arrays that permits personalized selection of the basic characteristics of a mechanical model. The tool automatically exports the selected options to an ANSYS batch file, including instructions to run a static and a linear buckling analysis. Later, the subsequent simulation results can be retrieved for on-screen display and potential postprocessing. In addition, this work reviews recent proposals (2018-2022) about finite element model characterization of microneedles to establish the minimum set of features that any tool intended for automating a design process should provide.
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Affiliation(s)
- Yolanda Lechuga
- Group of Microelectronics Engineering, Department of Electronics Technology, Systems Engineering and Automation, Universidad de Cantabria, 39005 Santander, Spain
| | - Gregoire Kandel
- Group of Microelectronics Engineering, Department of Electronics Technology, Systems Engineering and Automation, Universidad de Cantabria, 39005 Santander, Spain
- ENSEIRB-MATMECA, Bordeaux INP, CEDEX, 33402 Talence, France
| | - Jose Angel Miguel
- Group of Microelectronics Engineering, Department of Electronics Technology, Systems Engineering and Automation, Universidad de Cantabria, 39005 Santander, Spain
| | - Mar Martinez
- Group of Microelectronics Engineering, Department of Electronics Technology, Systems Engineering and Automation, Universidad de Cantabria, 39005 Santander, Spain
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19
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Metallic Microneedles for Transdermal Drug Delivery: Applications, Fabrication Techniques and the Effect of Geometrical Characteristics. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 10:bioengineering10010024. [PMID: 36671595 PMCID: PMC9855189 DOI: 10.3390/bioengineering10010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/17/2022] [Accepted: 12/15/2022] [Indexed: 12/28/2022]
Abstract
Current procedures for transdermal drug delivery (TDD) have associated limitations including poor administration of nucleic acid, small or large drug molecules, pain and stress for needle phobic people. A painless micro-sized device capable of delivering drugs easily and efficiently, eliminating the disadvantages of traditional systems, has yet to be developed. While polymeric-based microneedle (MN) arrays have been used successfully and clinically as TDD systems, these devices lack mechanical integrity, piercing capacity and the ability to achieve tailored drug release into the systemic circulation. Recent advances in micro/nano fabrication techniques using Additive Manufacturing (AM), also known as 3D printing, have enabled the fabrication of metallic MN arrays, which offer the potential to overcome the limitations of existing systems. This review summarizes the different types of MNs used in TDD and their mode of drug delivery. The application of MNs in the treatment of a range of diseases including diabetes and cancer is discussed. The potential role of solid metallic MNs in TDD, the various techniques used for their fabrication, and the influence of their geometrical characteristics (e.g., shape, size, base diameter, thickness, and tip sharpness) on effective TDD are explored. Finally, the potential and the future directions relating to the optimization of metallic MN arrays for TDD are highlighted.
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20
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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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21
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Phatale V, Vaiphei KK, Jha S, Patil D, Agrawal M, Alexander A. Overcoming skin barriers through advanced transdermal drug delivery approaches. J Control Release 2022; 351:361-380. [PMID: 36169040 DOI: 10.1016/j.jconrel.2022.09.025] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 10/31/2022]
Abstract
Upon exhaustive research, the transdermal drug delivery system (TDDS) has appeared as a potential, well-accepted, and popular approach to a novel drug delivery system. Ease of administration, easy handling, minimum systemic exposure, least discomfort, broad flexibility and tunability, controlled release, prolonged therapeutic effect, and many more perks make it a promising approach for effective drug delivery. Although, the primary challenge associated is poor skin permeability. Skin is an intact barrier that serves as a primary defense mechanism to preclude any foreign particle's entry into the body. Owing to the unique anatomical framework, i.e., compact packing of stratum corneum with tight junction and fast anti-inflammatory responses, etc., emerged as a critical physiological barrier for TDDS. Fusion with other novel approaches like nanocarriers, specially designed transdermal delivery devices, permeation enhancers, etc., can overcome the limitations. Utilizing such strategies, some of the products are under clinical trials, and many are under investigation. This review explores all dimensions that overcome poor permeability and allows the drug to attain maximum potential. The article initially compiles fundamental features, components, and design of TDDS, followed by critical aspects and various methods, including in vitro, ex vivo, and in vivo methods of assessing skin permeability. The work primarily aimed to highlight the recent advancement in novel strategies for effective transdermal drug delivery utilizing active methods like iontophoresis, electroporation, sonophoresis, microneedle, needleless jet injection, etc., and passive methods such as the use of liposomes, SLN, NLC, micro/nanoemulsions, dendrimers, transferosomes, and many more nanocarriers. In all, this compilation will provide a recent insight on the novel updates along with basic concepts, the current status of clinical development, and challenges for the clinical translation of TDDS.
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Affiliation(s)
- Vivek Phatale
- Department of Pharmaceutical Technology (Formulations), National Institute of Pharmaceutical Education and Research, Guwahati (NIPER-G), Changsari, Guwahati 781101, India
| | - Klaudi K Vaiphei
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Guwahati (NIPER-G), Changsari, Guwahati 781101, India
| | - Shikha Jha
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Guwahati (NIPER-G), Changsari, Guwahati 781101, India
| | - Dnyaneshwar Patil
- Department of Pharmaceutical Technology (Formulations), National Institute of Pharmaceutical Education and Research, Guwahati (NIPER-G), Changsari, Guwahati 781101, India
| | - Mukta Agrawal
- SVKM's Narsee Monjee Institute of Management Studies (NMIMS), School of Pharmacy & Technology Management, Hyderabad 509301, India
| | - Amit Alexander
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Guwahati (NIPER-G), Changsari, Guwahati 781101, India.
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22
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Zhu T, Zhang W, Jiang P, Zhou S, Wang C, Qiu L, Shi H, Cui P, Wang J. Progress in Intradermal and Transdermal Gene Therapy with Microneedles. Pharm Res 2022; 39:2475-2486. [PMID: 36008737 DOI: 10.1007/s11095-022-03376-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/17/2022] [Indexed: 01/18/2023]
Abstract
Gene therapy is one of the most widely studied treatments and has the potential to treat a variety of intractable diseases. The skin's limited permeability, as the body's initial protective barrier, drastically inhibits the delivery effect of gene medicine. Given the potential adverse effects and physicochemical features of the medications, improving generic drug penetration into the skin barrier and achieving an effective level of target tissues remains a challenge. Microneedles have made tremendous improvements in aided gene transfer and medication delivery as a unique method. Microneedles offer the advantage of being minimally invasive and painless, as well as the ability to distribute gene medicines straight through the stratum corneum. Microneedles have been used to penetrate skin tissue with various nucleic acids and medicines in recent years, allowing for a wide range of applications in the treatment of skin ailments. This review focuses on skin-related disorders and immunity, and it primarily discusses the progress of microneedle transdermal gene therapy in recent years. It also complements the current major vectors and related microneedle gene therapy applications.
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Affiliation(s)
- Ting Zhu
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Wenya Zhang
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Pengju Jiang
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Shuwen Zhou
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Cheng Wang
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Lin Qiu
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Honglei Shi
- Wujin Hospital Affiliated With Jiangsu University, Changzhou, 213017, Jiangsu, People's Republic of China.
- The Wujin Clinical College of Xuzhou Medical University, Changzhou, 213017, Jiangsu, People's Republic of China.
| | - Pengfei Cui
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Jianhao Wang
- School of Pharmacy, Changzhou University, Changzhou, 213164, People's Republic of China.
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23
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The Finite Element Analysis Research on Microneedle Design Strategy and Transdermal Drug Delivery System. Pharmaceutics 2022; 14:pharmaceutics14081625. [PMID: 36015251 PMCID: PMC9413279 DOI: 10.3390/pharmaceutics14081625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/28/2022] [Accepted: 07/28/2022] [Indexed: 02/04/2023] Open
Abstract
Microneedles (MNs) as a novel transdermal drug delivery system have shown great potential for therapeutic and disease diagnosis applications by continually providing minimally invasive, portable, cost-effective, high bioavailability, and easy-to-use tools compared to traditional parenteral administrations. However, microneedle transdermal drug delivery is still in its infancy. Many research studies need further in-depth exploration, such as safety, structural characteristics, and drug loading performance evaluation. Finite element analysis (FEA) uses mathematical approximations to simulate real physical systems (geometry and load conditions). It can simplify complex engineering problems to guide the precise preparation and potential industrialization of microneedles, which has attracted extensive attention. This article introduces FEA research for microneedle transdermal drug delivery systems, focusing on microneedle design strategy, skin mechanics models, skin permeability, and the FEA research on drug delivery by MNs.
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24
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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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25
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Mo J, Liu J, Huang S, Liang B, Huang X, Yang C, Chen M, Liu J, Zhang T, Xie X, Guo J, Liu F, Chen HJ. Determination of Transdermal Rate of Metallic Microneedle Array through an Impedance Measurements-Based Numerical Check Screening Algorithm. MICROMACHINES 2022; 13:mi13050718. [PMID: 35630185 PMCID: PMC9146767 DOI: 10.3390/mi13050718] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022]
Abstract
Microneedle systems have been widely used in health monitoring, painless drug delivery, and medical cosmetology. Although many studies on microneedle materials, structures, and applications have been conducted, the applications of microneedles often suffered from issues of inconsistent penetration rates due to the complication of skin-microneedle interface. In this study, we demonstrated a methodology of determination of transdermal rate of metallic microneedle array through impedance measurements-based numerical check screening algorithm. Metallic sheet microneedle array sensors with different sizes were fabricated to evaluate different transdermal rates. In vitro sensing of hydrogen peroxide confirmed the effect of transdermal rate on the sensing outcomes. An FEM simulation model of a microneedle array revealed the monotonous relation between the transdermal state and test current. Accordingly, two methods were primely derived to calculate the transdermal rate from the test current. First, an exact logic method provided the number of unpenetrated tips per sheet, but it required more rigorous testing results. Second, a fuzzy logic method provided an approximate transdermal rate on adjacent areas, being more applicable and robust to errors. Real-time transdermal rate estimation may be essential for improving the performance of microneedle systems, and this study provides various fundaments toward that goal.
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Affiliation(s)
- Jingshan Mo
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
| | - Junqing Liu
- Department of Cardiology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China;
| | - Shuang Huang
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
| | - Baoming Liang
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
| | - Xinshuo Huang
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
| | - Cheng Yang
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China;
| | - Jing Liu
- The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China;
| | - Tong Zhang
- School of Computer Science and Engineering, South China University of Technology, Guangzhou 510006, China;
- Pazhou Lab, Guangzhou 510335, China
| | - Xi Xie
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
- The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China;
| | - Jun Guo
- Department of Cardiology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China;
- Correspondence: (J.G.); (F.L.); (H.-J.C.)
| | - Fanmao Liu
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
- The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China;
- Correspondence: (J.G.); (F.L.); (H.-J.C.)
| | - Hui-Jiuan Chen
- School of Electronics and Information Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China; (J.M.); (S.H.); (B.L.); (X.H.); (C.Y.); (X.X.)
- Correspondence: (J.G.); (F.L.); (H.-J.C.)
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Habib R, Azad AK, Akhlaq M, Al-Joufi FA, Shahnaz G, Mohamed HRH, Naeem M, Almalki ASA, Asghar J, Jalil A, Abdel-Daim MM. Thiolated Chitosan Microneedle Patch of Levosulpiride from Fabrication, Characterization to Bioavailability Enhancement Approach. Polymers (Basel) 2022; 14:polym14030415. [PMID: 35160403 PMCID: PMC8839939 DOI: 10.3390/polym14030415] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/07/2022] [Accepted: 01/14/2022] [Indexed: 02/04/2023] Open
Abstract
In this study, a first attempt has been made to deliver levosulpiride transdermally through a thiolated chitosan microneedle patch (TC-MNP). Levosulpiride is slowly and weakly absorbed from the gastrointestinal tract with an oral bioavailability of less than 25% and short half-life of about 6 h. In order to enhance its bioavailability, levosulpiride-loaded thiolated chitosan microneedle patches (LS-TC-MNPs) were fabricated. Firstly, thiolated chitosan was synthesized and characterized by nuclear magnetic resonance (1HNMR) spectroscopy, attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, differential scanning calorimetry (DSC), and X-ray diffraction (XRD). Thiolated chitosan has been used in different drug delivery systems; herein, thiolated chitosan has been used for the transdermal delivery of LS. LS-TC-MNPs were fabricated from different concentrations of thiolated chitosan solution. Furthermore, the levosulpiride-loaded thiolated chitosan microneedle patch (LS-TC-MNP) was characterized by FTIR spectroscopic analysis, scanning electron microscopy (SEM) study, penetration ability, tensile strength, moisture content, patch thickness, and elongation test. LS-TC-MNP fabricated with 3% thiolated chitosan solution was found to have the best tensile strength, moisture content, patch thickness, elongation, drug-loading efficiency, and drug content. Thiolated chitosan is biodegradable, nontoxic and has good absorption and swelling in the skin. LS-TC-MNP-3 consists of 100 needles in 10 rows each with 10 needles. The length of each microneedle was 575 μm; they were pyramidal in shape, with sharp pointed ends and a base diameter of 200 µm. The microneedle patch (LS-TC-MNP-3) resulted in-vitro drug release of 65% up to 48 h, ex vivo permeation of 63.6%, with good skin biocompatibility and enhanced in-vivo pharmacokinetics (AUC = 986 µg/mL·h, Cmax = 24.5 µg/mL) as compared to oral LS dispersion (AUC = 3.2 µg/mL·h, Cmax = 0.5 µg/mL). Based on the above results, LS-TC-MNP-3 seems to be a promising strategy for enhancing the bioavailability of levosulpiride.
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Affiliation(s)
- Rukhshanda Habib
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
- Department of Pharmacology, University of Oxford, Mansfield Rd., Oxford OX1 3QT, UK
- Department of Pharmacy, Quaid-I-Azam University, Islamabad 45320, Pakistan;
- Department of Biotechnology, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Abul Kalam Azad
- Pharmaceutical Technology Unit, Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia
- Correspondence: (A.K.A.); (M.M.A.-D.)
| | - Muhammad Akhlaq
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
| | - Fakhria A. Al-Joufi
- Department of Pharmacology, College of Pharmacy, Jouf University, Skaka 72341, Saudi Arabia;
| | - Gul Shahnaz
- Department of Pharmacy, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Hanan R. H. Mohamed
- Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt;
| | - Muhammad Naeem
- Department of Biotechnology, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Abdulraheem S. A. Almalki
- Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21974, Saudi Arabia;
| | - Junaid Asghar
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (R.H.); (M.A.); (J.A.)
| | - Aamir Jalil
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Mohamed M. Abdel-Daim
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (A.K.A.); (M.M.A.-D.)
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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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Advances of Microneedles in Biomedical Applications. Molecules 2021; 26:molecules26195912. [PMID: 34641460 PMCID: PMC8512585 DOI: 10.3390/molecules26195912] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 01/16/2023] Open
Abstract
A microneedle (MN) is a painless and minimally invasive drug delivery device initially developed in 1976. As microneedle technology evolves, microneedles with different shapes (cone and pyramid) and forms (solid, drug-coated, hollow, dissolvable and hydrogel-based microneedles) have been developed. The main objective of this review is the applications of microneedles in biomedical areas. Firstly, the classifications and manufacturing of microneedle are briefly introduced so that we can learn the advantages and fabrications of different MNs. Secondly, research of microneedles in biomedical therapy such as drug delivery systems, diagnoses of disease, as well as wound repair and cancer therapy are overviewed. Finally, the safety and the vision of the future of MNs are discussed.
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