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Li J, Xie Y, Liu G, Bahatibieke A, Zhao J, Kang J, Sha J, Zhao F, Zheng Y. Bioelectret Materials and Their Bioelectric Effects for Tissue Repair: A Review. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38852-38879. [PMID: 39041365 DOI: 10.1021/acsami.4c07808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Biophysical and clinical medical studies have confirmed that biological tissue lesions and trauma are related to the damage of an intrinsic electret (i.e., endogenous electric field), such as wound healing, embryonic development, the occurrence of various diseases, immune regulation, tissue regeneration, and cancer metastasis. As exogenous electrical signals, such as conductivity, piezoelectricity, ferroelectricity, and pyroelectricity, bioelectroactives can regulate the endogenous electric field, thus controlling the function of cells and promoting the repair and regeneration of tissues. Materials, once polarized, can harness their inherent polarized static electric fields to generate an electric field through direct stimulation or indirect interactions facilitated by physical signals, such as friction, ultrasound, or mechanical stimulation. The interaction with the biological microenvironment allows for the regulation and compensation of polarized electric signals in damaged tissue microenvironments, leading to tissue regeneration and repair. The technique shows great promise for applications in the field of tissue regeneration. In this paper, the generation and change of the endogenous electric field and the regulation of exogenous electroactive substances are expounded, and the latest research progress of the electret and its biological effects in the field of tissue repair include bone repair, nerve repair, drug penetration promotion, wound healing, etc. Finally, the opportunities and challenges of electret materials in tissue repair were summarized. Exploring the research and development of new polarized materials and the mechanism of regulating endogenous electric field changes may provide new insights and innovative methods for tissue repair and disease treatment in biological applications.
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Affiliation(s)
- Junfei Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yajie Xie
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Guodong Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Abudureheman Bahatibieke
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianming Zhao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jia Kang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jian Sha
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Feilong Zhao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yudong Zheng
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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2
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Sachs D, Jakob R, Thumm B, Bajka M, Ehret AE, Mazza E. Sustained Physiological Stretch Induces Abdominal Skin Growth in Pregnancy. Ann Biomed Eng 2024; 52:1576-1590. [PMID: 38424309 PMCID: PMC11081934 DOI: 10.1007/s10439-024-03472-6] [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: 10/14/2023] [Accepted: 02/11/2024] [Indexed: 03/02/2024]
Abstract
Supraphysiological stretches are exploited in skin expanders to induce tissue growth for autologous implants. As pregnancy is associated with large levels of sustained stretch, we investigated whether skin growth occurs in pregnancy. Therefore, we combined a mechanical model of skin and the observations from suction experiments on several body locations of five pregnant women at different gestational ages. The measurements show a continuous increase in stiffness, with the largest change observed during the last trimester. A comparison with numerical simulations indicates that the measured increase in skin stiffness is far below the level expected for the corresponding deformation of abdominal skin. A new set of simulations accounting for growth could rationalize all observations. The predicted amount of tissue growth corresponds to approximately 40% area increase before delivery. The results of the simulations also offered the opportunity to investigate the biophysical cues present in abdominal skin along gestation and to compare them with those arising in skin expanders. Alterations of the skin mechanome were quantified, including tissue stiffness, hydrostatic and osmotic pressure of the interstitial fluid, its flow velocity and electrical potential. The comparison between pregnancy and skin expansion highlights similarities as well as differences possibly influencing growth and remodeling.
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Affiliation(s)
- David Sachs
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland.
| | - Raphael Jakob
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
| | - Bettina Thumm
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
| | - Michael Bajka
- Department of Obstetrics and Gynecology, University Hospital of Zurich, Zurich, Switzerland
| | - Alexander E Ehret
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
- Swiss Federal Laboratories for Materials Science and Technology, Dubendorf, Switzerland
| | - Edoardo Mazza
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
- Swiss Federal Laboratories for Materials Science and Technology, Dubendorf, Switzerland
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3
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Sachs D, Jakob R, Restivo G, Hafner J, Lindenblatt N, Ehret AE, Mazza E. A quadriphasic mechanical model of the human dermis. Biomech Model Mechanobiol 2024:10.1007/s10237-024-01827-5. [PMID: 38489079 DOI: 10.1007/s10237-024-01827-5] [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: 08/14/2023] [Accepted: 02/09/2024] [Indexed: 03/17/2024]
Abstract
The present study investigates the multiphasic nature of the mechanical behavior of human dermis. Motivated by experimental observations and by consideration of its composition, a quadriphasic model of the dermis is proposed, distinguishing solid matrix components, interstitial fluid and charged constituents moving within the fluid, i.e., anions and cations. Compression and tensile experiments with and without change of osmolarity of the bath are performed to characterize the chemo-mechanical coupling in the dermis. Model parameters are determined through inverse analysis. The computations predict a dominant role of the permeability in the determination of the temporal evolution of the mechanical response of the tissue. In line with the previous studies on other tissues, the analysis shows that an ideal model based on Donnan's equilibrium overestimates the osmotic pressure in skin for the case of very dilute solutions. The quadriphasic model is applied to predict changes in dermal cell environment and therefore alterations in what is called the "mechanome," associated with skin stretch. The simulations indicate that skin deformation causes a variation in several local variables, including in particular the electric field associated with a deformation-induced non-homogeneous distribution of fixed charges.
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Affiliation(s)
- David Sachs
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland.
| | - Raphael Jakob
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
| | - Gaetana Restivo
- Department of Dermatology, University Hospital Zürich, Zurich, Switzerland
| | - Jürg Hafner
- Department of Dermatology, University Hospital Zürich, Zurich, Switzerland
| | - Nicole Lindenblatt
- Department of Plastic Surgery and Hand Surgery, University Hospital Zürich, Zurich, Switzerland
| | - Alexander E Ehret
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland
- Swiss Federal Laboratories for Materials Science and Technology, Experimental Continuum Mechanics, Dübendorf, Switzerland
| | - Edoardo Mazza
- Institute for Mechanical Systems, ETH Zürich, Zurich, Switzerland.
- Swiss Federal Laboratories for Materials Science and Technology, Experimental Continuum Mechanics, Dübendorf, Switzerland.
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4
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Dai J, Shao J, Zhang Y, Hang R, Yao X, Bai L, Hang R. Piezoelectric dressings for advanced wound healing. J Mater Chem B 2024; 12:1973-1990. [PMID: 38305583 DOI: 10.1039/d3tb02492j] [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: 02/03/2024]
Abstract
The treatment of chronic refractory wounds poses significant challenges and threats to both human society and the economy. Existing research studies demonstrate that electrical stimulation fosters cell proliferation and migration and promotes the production of cytokines that expedites the wound healing process. Presently, clinical settings utilize electrical stimulation devices for wound treatment, but these devices often present issues such as limited portability and the necessity for frequent recharging. A cutting-edge wound dressing employing the piezoelectric effect could transform mechanical energy into electrical energy, thereby providing continuous electrical stimulation and accelerating wound healing, effectively addressing these concerns. This review primarily reviews the selection of piezoelectric materials and their application in wound dressing design, offering a succinct overview of these materials and their underlying mechanisms. This study also provides a perspective on the current limitations of piezoelectric wound dressings and the future development of multifunctional dressings harnessing the piezoelectric effect.
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Affiliation(s)
- Jinjun Dai
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - Jin Shao
- Taikang Bybo Dental, Zhuhai, 519100, China
| | - Yi Zhang
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - Ruiyue Hang
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - Xiaohong Yao
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
| | - Long Bai
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Ruiqiang Hang
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
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Song S, McConnell KW, Shan D, Chen C, Oh B, Sun J, Poon ASY, George PM. Conductive gradient hydrogels allow spatial control of adult stem cell fate. J Mater Chem B 2024; 12:1854-1863. [PMID: 38291979 PMCID: PMC10922832 DOI: 10.1039/d3tb02269b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Electrical gradients are fundamental to physiological processes including cell migration, tissue formation, organ development, and response to injury and regeneration. Current electrical modulation of cells is primarily studied under a uniform electrical field. Here we demonstrate the fabrication of conductive gradient hydrogels (CGGs) that display mechanical properties and varying local electrical gradients mimicking physiological conditions. The electrically-stimulated CGGs enhanced human mesenchymal stem cell (hMSC) viability and attachment. Cells on CGGs under electrical stimulation showed a high expression of neural progenitor markers such as Nestin, GFAP, and Sox2. More importantly, CGGs showed cell differentiation toward oligodendrocyte lineage (Oligo2) in the center of the scaffold where the electric field was uniform with a greater intensity, while cells preferred neuronal lineage (NeuN) on the edge of the scaffold on a varying electric field at lower magnitude. Our data suggest that CGGs can serve as a useful platform to study the effects of electrical gradients on stem cells and potentially provide insights on developing new neural engineering applications.
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Affiliation(s)
- Shang Song
- Department of Neurology and Neurological Sciences, Stanford University, School of Medicine, 300 Pasteur Dr, MC5778 Stanford Stroke Center, Stanford, CA 94305-5778, USA.
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ, USA
- Departments of Neuroscience GIDP, Materials Science and Engineering, BIO5 Institute, The University of Arizona, Tucson, AZ, USA
| | - Kelly W McConnell
- Department of Neurology and Neurological Sciences, Stanford University, School of Medicine, 300 Pasteur Dr, MC5778 Stanford Stroke Center, Stanford, CA 94305-5778, USA.
| | - Dingying Shan
- Department of Neurology and Neurological Sciences, Stanford University, School of Medicine, 300 Pasteur Dr, MC5778 Stanford Stroke Center, Stanford, CA 94305-5778, USA.
| | - Cheng Chen
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
| | - Byeongtaek Oh
- Department of Neurology and Neurological Sciences, Stanford University, School of Medicine, 300 Pasteur Dr, MC5778 Stanford Stroke Center, Stanford, CA 94305-5778, USA.
| | - Jindi Sun
- Department of Biomedical Engineering, The University of Arizona, Tucson, AZ, USA
| | - Ada S Y Poon
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
| | - Paul M George
- Department of Neurology and Neurological Sciences, Stanford University, School of Medicine, 300 Pasteur Dr, MC5778 Stanford Stroke Center, Stanford, CA 94305-5778, USA.
- Stanford Stroke Center and Stanford University School of Medicine, Stanford, CA, USA
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Urabe H, Akimoto R, Kamiya S, Hosoki K, Ichikawa H, Nishiyama T. Pulsed electrical stimulation and amino acid derivatives promote collagen gene expression in human dermal fibroblasts. Cytotechnology 2024; 76:139-151. [PMID: 38304625 PMCID: PMC10828296 DOI: 10.1007/s10616-023-00604-z] [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: 04/18/2023] [Accepted: 10/19/2023] [Indexed: 02/03/2024] Open
Abstract
Several collagen types are important for maintaining skin structure and function. Previous reports show that l-hydroxyproline (Hyp), N-acetyl-l-hydroxyproline (AHyp), and l-alanyl-l-glutamine (Aln-Gln) are biological active substances with collagen synthesis-promoting effects. In this study, we combined the promotive effects of pulsed electrical stimulation (PES) with three amino acid derivatives in human dermal fibroblasts. Fibroblasts were exposed to PES with a 4,800 Hz pulse frequency and a voltage at 1 or 5 V for 15 min. The gene expression of type I and III collagen (fibrillar collagen), type IV and VII collagen (basement membrane collagen and anchoring fibril collagen) were measured by RT-PCR 48 h after PES. PES alone promoted the expression of COL1A1 and COL3A1 at 5 V but did not alter that of COL4A1 and COL7A1. Each AAD and the AAD mixture promoted the expression of COL4A1 and COL7A1 but either repressed, or did not alter, that of COL1A1 and COL3A1. Compared to treatment with each AAD, PES at 5 V with Hyp promoted the expression of COL1A1 and COL3A1, enhanced COL3A1 expression with AHyp, and stimulated COL3A1 expression with Aln-Gln, while COL4A1 and COL7A1 expressions were not affected. PES and the AAD mixture significantly promoted COL4A1 expression in a voltage-dependent manner, and COL1A1 and COL3A1 demonstrated a similar but nonsignificant trend, whereas COL7A1 expression was not affected. The combination of PES with each AAD or the AAD mixture may improve skin structure and function by increasing the expression of basement membrane collagen and dermal fibrillar collagen.
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Affiliation(s)
- Hiroya Urabe
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
| | - Ryuji Akimoto
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
| | - Shohei Kamiya
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
| | - Katsu Hosoki
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
| | - Hideyuki Ichikawa
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
| | - Toshio Nishiyama
- Homer Ion Laboratory Co., Ltd, 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045 Japan
- Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509 Japan
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7
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Rabbani M, Rahman E, Powner MB, Triantis IF. Making Sense of Electrical Stimulation: A Meta-analysis for Wound Healing. Ann Biomed Eng 2024; 52:153-177. [PMID: 37743460 PMCID: PMC10808217 DOI: 10.1007/s10439-023-03371-2] [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: 07/08/2023] [Accepted: 09/11/2023] [Indexed: 09/26/2023]
Abstract
Electrical stimulation as a mode of external enhancement factor in wound healing has been explored widely. It has proven to have multidimensional effects in wound healing including antibacterial, galvanotaxis, growth factor secretion, proliferation, transdifferentiation, angiogenesis, etc. Despite such vast exploration, this modality has not yet been established as an accepted method for treatment. This article reviews and analyzes the approaches of using electrical stimulation to modulate wound healing and discusses the incoherence in approaches towards reporting the effect of stimulation on the healing process. The analysis starts by discussing various processes adapted in in vitro, in vivo, and clinical practices. Later it is focused on in vitro approaches directed to various stages of wound healing. Based on the analysis, a protocol is put forward for reporting in vitro works in such a way that the outcomes of the experiment are replicable and scalable in other setups. This work proposes a ground of unification for all the in vitro approaches in a more sensible manner, which can be further explored for translating in vitro approaches to complex tissue stimulation to establish electrical stimulation as a controlled clinical method for modulating wound healing.
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Affiliation(s)
- Mamun Rabbani
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Enayetur Rahman
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Michael B Powner
- Centre for Applied Vision Research, School of Health and Psychological Sciences, City University of London, Northampton Square, London, ECIV 0HB, UK
| | - Iasonas F Triantis
- Research Centre for Biomedical Engineering, School of Science and Technology, City University of London, Northampton Square, London, ECIV 0HB, UK.
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8
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Nwogbaga I, Kim AH, Camley BA. Physical limits on galvanotaxis. Phys Rev E 2023; 108:064411. [PMID: 38243498 DOI: 10.1103/physreve.108.064411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/17/2023] [Indexed: 01/21/2024]
Abstract
Eukaryotic cells can polarize and migrate in response to electric fields via "galvanotaxis," which aids wound healing. Experimental evidence suggests cells sense electric fields via molecules on the cell's surface redistributing via electrophoresis and electroosmosis, though the sensing species has not yet been conclusively identified. We develop a model that links sensor redistribution and galvanotaxis using maximum likelihood estimation. Our model predicts a single universal curve for how galvanotactic directionality depends on field strength. We can collapse measurements of galvanotaxis in keratocytes, neural crest cells, and granulocytes to this curve, suggesting that stochasticity due to the finite number of sensors may limit galvanotactic accuracy. We find cells can achieve experimentally observed directionalities with either a few (∼100) highly polarized sensors or many (∼10^{4}) sensors with an ∼6-10% change in concentration across the cell. We also identify additional signatures of galvanotaxis via sensor redistribution, including the presence of a tradeoff between accuracy and variance in cells being controlled by rapidly switching fields. Our approach shows how the physics of noise at the molecular scale can limit cell-scale galvanotaxis, providing important constraints on sensor properties and allowing for new tests to determine the specific molecules underlying galvanotaxis.
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Affiliation(s)
- Ifunanya Nwogbaga
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - A Hyun Kim
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Brian A Camley
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, USA
- William H. Miller III Department of Physics & Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
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9
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Talipova AB, Buranych VV, Savitskaya IS, Bondar OV, Turlybekuly A, Pogrebnjak AD. Synthesis, Properties, and Applications of Nanocomposite Materials Based on Bacterial Cellulose and MXene. Polymers (Basel) 2023; 15:4067. [PMID: 37896311 PMCID: PMC10610809 DOI: 10.3390/polym15204067] [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: 07/12/2023] [Revised: 09/17/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
MXene exhibits impressive characteristics, including flexibility, mechanical robustness, the capacity to cleanse liquids like water through MXene membranes, water-attracting nature, and effectiveness against bacteria. Additionally, bacterial cellulose (BC) exhibits remarkable qualities, including mechanical strength, water absorption, porosity, and biodegradability. The central hypothesis posits that the incorporation of both MXene and bacterial cellulose into the material will result in a remarkable synthesis of the attributes inherent to MXene and BC. In layered MXene/BC coatings, the presence of BC serves to separate the MXene layers and enhance the material's integrity through hydrogen bond interactions. This interaction contributes to achieving a high mechanical strength of this film. Introducing cellulose into one layer of multilayer MXene can increase the interlayer space and more efficient use of MXene. Composite materials utilizing MXene and BC have gained significant traction in sensor electronics due to the heightened sensitivity exhibited by these sensors compared to usual ones. Hydrogel wound healing bandages are also fabricated using composite materials based on MXene/BC. It is worth mentioning that MXene/BC composites are used to store energy in supercapacitors. And finally, MXene/BC-based composites have demonstrated high electromagnetic interference (EMI) shielding efficiency.
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Affiliation(s)
- Aizhan B Talipova
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Volodymyr V Buranych
- Department of Nanoelectronics and Surface Modification, Sumy State University, 40000 Sumy, Ukraine
- Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, 917 24 Trnava, Slovakia
| | - Irina S Savitskaya
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Oleksandr V Bondar
- Department of Nanoelectronics and Surface Modification, Sumy State University, 40000 Sumy, Ukraine
| | - Amanzhol Turlybekuly
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
- Aman Technologies, LLP, Astana 010000, Kazakhstan
| | - Alexander D Pogrebnjak
- Department of Nanoelectronics and Surface Modification, Sumy State University, 40000 Sumy, Ukraine
- Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, 917 24 Trnava, Slovakia
- Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland
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Das R, Le TT, Schiff B, Chorsi MT, Park J, Lam P, Kemerley A, Supran AM, Eshed A, Luu N, Menon NG, Schmidt TA, Wang H, Wu Q, Thirunavukkarasu M, Maulik N, Nguyen TD. Biodegradable piezoelectric skin-wound scaffold. Biomaterials 2023; 301:122270. [PMID: 37591188 PMCID: PMC10528909 DOI: 10.1016/j.biomaterials.2023.122270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/12/2023] [Accepted: 08/06/2023] [Indexed: 08/19/2023]
Abstract
Electrical stimulation (ES) induces wound healing and skin regeneration. Combining ES with the tissue-engineering approach, which relies on biomaterials to construct a replacement tissue graft, could offer a self-stimulated scaffold to heal skin-wounds without using potentially toxic growth factors and exogenous cells. Unfortunately, current ES technologies are either ineffective (external stimulations) or unsafe (implanted electrical devices using toxic batteries). Hence, we propose a novel wound-healing strategy that integrates ES with tissue engineering techniques by utilizing a biodegradable self-charged piezoelectric PLLA (Poly (l-lactic acid)) nanofiber matrix. This unique, safe, and stable piezoelectric scaffold can be activated by an external ultrasound (US) to produce well-controlled surface-charges with different polarities, thus serving multiple functions to suppress bacterial growth (negative surface charge) and promote skin regeneration (positive surface charge) at the same time. We demonstrate that the scaffold activated by low intensity/low frequency US can facilitate the proliferation of fibroblast/epithelial cells, enhance expression of genes (collagen I, III, and fibronectin) typical for the wound healing process, and suppress the growth of S. aureus and P. aeruginosa bacteria in vitro simultaneously. This approach induces rapid skin regeneration in a critical-sized skin wound mouse model in vivo. The piezoelectric PLLA skin scaffold thus assumes the role of a multi-tasking, biodegradable, battery-free electrical stimulator which is important for skin-wound healing and bacterial infection prevention simultaneuosly.
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Affiliation(s)
- Ritopa Das
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Thinh T Le
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Benjamin Schiff
- Department of Physiology and Neurobiology, University of Connecticut, Storrs, CT, 06269, USA
| | - Meysam T Chorsi
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, 06269, USA; Department of Mechanical Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Jinyoung Park
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Priscilla Lam
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health School of Medicine, Farmington, 06030, CT, USA
| | - Andrew Kemerley
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health School of Medicine, Farmington, 06030, CT, USA
| | - Ajayan Mannoor Supran
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health School of Medicine, Farmington, 06030, CT, USA
| | - Amit Eshed
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Ngoc Luu
- Department of Biomedical Engineering, New York University, New York, NY, 10012, USA
| | - Nikhil G Menon
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, 06030, CT, USA
| | - Tannin A Schmidt
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, 06030, CT, USA; Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA
| | - Hanzhang Wang
- Pathology and Laboratory Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Qian Wu
- Pathology and Laboratory Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Mahesh Thirunavukkarasu
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health School of Medicine, Farmington, 06030, CT, USA
| | - Nilanjana Maulik
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health School of Medicine, Farmington, 06030, CT, USA
| | - Thanh D Nguyen
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, 06269, USA; Department of Mechanical Engineering, University of Connecticut, Storrs, CT, 06269, USA; Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA.
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11
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Davis M, Hom D. Current and Future Developments in Wound Healing. Facial Plast Surg 2023; 39:477-488. [PMID: 37308128 PMCID: PMC11121504 DOI: 10.1055/s-0043-1769936] [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] [Indexed: 06/14/2023] Open
Abstract
Poor wound healing on the face and neck can lead to significant morbidity and dissatisfaction in facial plastic surgery. With current advances in wound healing management and commercially available biologic and tissue-engineered products, there are several options available to optimize acute wound healing and treat delayed or chronic wounds. This article summarizes some of the key principals and recent developments in wound healing research in addition to potential future advancements in the field of soft tissue wound healing.
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Affiliation(s)
- Morgan Davis
- Department of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, California
| | - David Hom
- Department of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, California
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12
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Yin H, Du H, Li W, Qin Y, Fan Y, Tan J, Yang M, Zhu C, Xu Y. Long-Lived Photoacid-Doped Conducting Composites Induce Photocurrent for Efficient Wound Healing. Adv Healthc Mater 2023; 12:e2300742. [PMID: 37204778 DOI: 10.1002/adhm.202300742] [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: 03/08/2023] [Revised: 05/14/2023] [Indexed: 05/20/2023]
Abstract
Electrical stimulation is an effective strategy for facilitating wound healing. However, it is hindered by unwieldy electrical systems. In this study, a light-powered dressing based on long-lived photoacid generator (PAG)-doped polyaniline composites is used, which can generate a photocurrent under visible light irradiation to interact with the endogenous electric field and facilitate skin growth. Light-controlled proton binding and dissociation result in oxidation and reduction of the polyaniline backbone, inducing charge transfer to generate a photocurrent. Due to the rapid intramolecular photoreaction of PAG, a long-lived proton-induced localized acidic environment is formed, which protects the wound from microbial infection. In summary, a simple and effective therapeutic strategy is introduced for light-powered and biocompatible wound dressings that show great potential for wound treatment.
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Affiliation(s)
- Haiyan Yin
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Huifang Du
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Wenya Li
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yinhua Qin
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Yonghong Fan
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Ju Tan
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Mingcan Yang
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Chuhong Zhu
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
- State Key Laboratory of Trauma, Burn and Combined Injury, Chongqing, 400038, China
| | - Youqian Xu
- National and Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Department of Anatomy, Army Medical University (Third Military Medical University), Chongqing, 400038, China
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13
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Wang W, Huang W, Liu J, Zhang Z, Ji R, Wu C, Zhang J, Jiang X. Electric field promotes dermal fibroblast transdifferentiation through activation of RhoA/ROCK1 pathway. Int J Med Sci 2023; 20:1326-1335. [PMID: 37786441 PMCID: PMC10542021 DOI: 10.7150/ijms.86215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/26/2023] [Indexed: 10/04/2023] Open
Abstract
With the increased incidence of age-related and lifestyle-related diseases, chronic wounds are sweeping the world, where recent studies reveal that dysfunction of fibroblast plays an indispensable role. Endogenous electric field (EF) generated by skin wound disrupting an epithelial layer has been used as an alternative clinical treatment in chronic wound by modulating cellular behaviours, including fibroblasts transdifferentiation. Although many molecules and signaling pathways have been reported associated with fibroblasts transdifferentiation, studies investigating how the electric field affects the cellular pathways have been limited. For this purpose, a model of electric field treatment in vitro was established, where cells were randomly divided into control and electrified groups. The changes of protein expression and distribution were detected under different conditions, along with Zeiss imaging system observing the response of cells. Results showed that fibroblast transdifferentiation was accompanied by increased expression of a-SMA and extracellular matrix (COL-1 and COL-3) under the EF. Simultaneously, fibroblast transdifferentiation was also consistent with changes of cell arrangement and enhanced motility. Furthermore, we found that electric field activated RhoA signaling pathways activity. Y-27632, a RhoA inhibitor, which was used to treat fibroblasts, resulted in reduced transdifferentiation. The connection between electric field and RhoA signaling pathways is likely to be significant in modulating fibroblast transdifferentiation in acute injury and tissue remodeling, which provides an innovative idea for the molecular mechanism of EF in promoting chronic wound healing.
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Affiliation(s)
- Wenping Wang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Wanqi Huang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
| | - Jie Liu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
- Department of Plastic and Maxillofacial Surgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Ze Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
| | - Ran Ji
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chao Wu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
| | - Jiaping Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
| | - Xupin Jiang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Army Medical University, Chongqing 400038, China
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14
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Pavlenko A, Lasota S, Wnuk D, Paw M, Czyż J, Michalik M, Madeja Z. Bronchial Fibroblasts from Asthmatic Patients Display Impaired Responsiveness to Direct Current Electric Fields (dcEFs). Biomedicines 2023; 11:2138. [PMID: 37626635 PMCID: PMC10452584 DOI: 10.3390/biomedicines11082138] [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: 07/04/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Accumulating evidence suggests that an important role is played by electric signals in modifying cell behaviour during developmental, regenerative and pathological processes. However, their role in asthma has not yet been addressed. Bronchial fibroblasts have recently been identified having important roles in asthma development. Therefore, we adapted an experimental approach based on the lineages of human bronchial fibroblasts (HBF) derived from non-asthmatic (NA) donors and asthmatic (AS) patients to elucidate whether their reactivity to direct current electric fields (dcEF) could participate in the asthmatic process. The efficient responsiveness of NA HBF to an electric field in the range of 2-4 V/cm was illustrated based on the perpendicular orientation of long axes of the cells to the field lines and their directional movement towards the anode. These responses were related to the activity of TGF-β signalling, as the electrotaxis and re-orientation of NA HBF polarity was impaired by the inhibitors of canonical and non-canonical TGF-β-dependent pathways. A similar tendency towards perpendicular cell-dcEF orientation was observed for AS HBF. However, their motility remained insensitive to the electric field applied at 2-4 V/cm. Collectively, these observations demonstrate the sensitivity of NA HBF to dcEF, as well as the inter-relations between this parameter and the canonical and non-canonical TGF-β pathways, and the differences between the electrotactic responses of NA and AS HBF point to the possible role of their dcEFs in desensitisation in the asthmatic process. This process may impair the physiologic behaviour of AS HBF functions, including cell motility, ECM deposition, and contractility, thus promoting bronchial wall remodelling, which is a characteristic of bronchial asthma.
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Affiliation(s)
| | - Sławomir Lasota
- Correspondence: (S.L.); (Z.M.); Tel.: +48-126-646-143 (S.L.); +48-126-646-142 (Z.M.)
| | | | | | | | | | - Zbigniew Madeja
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland; (A.P.); (D.W.); (M.P.); (J.C.); (M.M.)
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15
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Leal J, Shaner S, Jedrusik N, Savelyeva A, Asplund M. Electrotaxis evokes directional separation of co-cultured keratinocytes and fibroblasts. Sci Rep 2023; 13:11444. [PMID: 37454232 PMCID: PMC10349865 DOI: 10.1038/s41598-023-38664-y] [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: 04/12/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023] Open
Abstract
Bioelectric communication plays a significant role in several cellular processes and biological mechanisms, such as division, differentiation, migration, cancer metastasis, and wound healing. Ion flow across cellular walls leads to potential gradients and subsequent formation of constant or time-varying electric fields(EFs), which regulate cellular processes. An EF is natively generated towards the wound center during epithelial wound healing, aiming to align and guide cell migration, particularly of macrophages, fibroblasts, and keratinocytes. While this phenomenon, known as electrotaxis or galvanotaxis, has been extensively investigated across many cell types, it is typically explored one cell type at a time, which does not accurately represent cellular interactions during complex biological processes. Here we show the co-cultured electrotaxis of epidermal keratinocytes and dermal fibroblasts with a salt-bridgeless microfluidic approach for the first time. The electrotactic response of these cells was first assessed in mono-culture to establish a baseline, resulting in the characteristic cathodic migration for keratinocytes and anodic for fibroblasts. Both cell types retained their electrotactic properties in co-culture leading to clear cellular partition even in the presence of cellular collisions. The methods leveraged here pave the way for future co-culture electrotaxis experiments where the concurrent influence of cell types can be thoroughly investigated.
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Affiliation(s)
- José Leal
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany.
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Germany.
| | - Sebastian Shaner
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Germany
| | - Nicole Jedrusik
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Germany
| | - Anna Savelyeva
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Germany
| | - Maria Asplund
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany.
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Germany.
- Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg, Freiburg, Germany.
- Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, Sweden.
- Division of Nursing and Medical Technology, Luleå University of Technology, 97187, Luleå, Sweden.
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16
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Hu F, Gao Q, Liu J, Chen W, Zheng C, Bai Q, Sun N, Zhang W, Zhang Y, Lu T. Smart microneedle patches for wound healing and management. J Mater Chem B 2023; 11:2830-2851. [PMID: 36916631 DOI: 10.1039/d2tb02596e] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
The number of patients with non-healing wounds is generally increasing globally, placing a huge social and economic burden on every country. The complexity of the wound-healing process remains a major health challenge despite the numerous studies that have been reported on conventional wound dressings. Therefore, a therapeutic system that combines diagnostic and therapeutic modalities is essential to monitor wound-related biomarkers and facilitate wound healing in real time. Microneedles, as a multifunctional platform, are promising for transdermal diagnostics and drug delivery. Their advantages are mainly reflected in painless transdermal drug delivery, good biocompatibility, and ease of self-administration. In this work, we review recent advances in the use of microneedle patches for wound healing and monitoring. The paper first provides a brief overview of the skin structure and the wound healing process, and then discusses the current state of research and prospects for the development of wound-related biomarkers and their real-time monitoring based on microneedle sensors. It summarizes the current state of research based on the unique design of microneedle patches, including biomimetic, conductive, and environmentally responsive, to achieve wound healing. It further summarizes the prospects for the application of different microneedle-based drug delivery modalities and drug delivery substances for wound healing, due to their superior transdermal drug delivery advantages. It concludes with challenges and expectations for the use of smart microneedle patches for wound healing and management.
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Affiliation(s)
- Fangfang Hu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Qian Gao
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Jinxi Liu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Wenting Chen
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Caiyun Zheng
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Que Bai
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Na Sun
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Wenhui Zhang
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Yanni Zhang
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Tingli Lu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
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17
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Castrejón-Comas V, Alemán C, Pérez-Madrigal MM. Multifunctional conductive hyaluronic acid hydrogels for wound care and skin regeneration. Biomater Sci 2023; 11:2266-2276. [PMID: 36912458 DOI: 10.1039/d2bm02057b] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Although the main function of skin is to act as a protective barrier against external factors, it is indeed an extremely vulnerable tissue. Skincare, regardless of the wound type, requires effective treatments to prevent bacterial infection and local inflammation. The complex biological roles displayed by hyaluronic acid (HA) during the wound healing process have made this multifaceted polysaccharide an alternative biomaterial to prepare wound dressings. Therefore, herein, we present the most advanced research undertaken to engineer conductive and interactive hydrogels based on HA as wound dressings that enhance skin tissue regeneration either through electrical stimulation (ES) or by displaying multifunctional performance. First, we briefly introduce to the reader the effect of ES on promoting wound healing and why HA has become a vogue as a wound healing agent. Then, a selection of systems, chosen according to their multifunctional relevance, is presented. Special care has been taken to highlight those recently reported works (mainly from the last 3 years) with enhanced scalability and biomimicry. By doing that, we have turned a critical eye on the field considering what major challenges must be overcome for these systems to have real commercial, clinical, or other translational impact.
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Affiliation(s)
- Víctor Castrejón-Comas
- Departament d'Enginyeria Química (EQ), Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain. .,Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química (EQ), Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain. .,Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain.,Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
| | - Maria M Pérez-Madrigal
- Departament d'Enginyeria Química (EQ), Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain. .,Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal Besòs (EEBE), Universitat Politècnica de Catalunya · BarcelonaTech (UPC), C/Eduard Maristany, 10-14, 08019, Barcelona, Spain
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18
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Wang L, Yu Y, Zhao X, Zhang Z, Yuan X, Cao J, Meng W, Ye L, Lin W, Wang G. A Biocompatible Self-Powered Piezoelectric Poly(vinyl alcohol)-Based Hydrogel for Diabetic Wound Repair. ACS APPLIED MATERIALS & INTERFACES 2022; 14:46273-46289. [PMID: 36195572 DOI: 10.1021/acsami.2c13026] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Acute and chronic wounds, caused by trauma, tumors, diabetic foot ulcers, etc., are usually difficult to heal, while applying exogenous electrical stimulation to enhance the endogenous electric field in the wound has been proven to significantly accelerate wound healing. However, traditional electrical stimulation devices require an additional external power supply, making them poor in portability and comfort. In this work, a self-powered piezoelectric poly(vinyl alcohol) (PVA)/polyvinylidene fluoride (PVDF) composite hydrogel is constructed by establishing a distinctive preparation process of freezing/thawing-solvent replacement-annealing-swelling. The hydrogen bonding in the hydrogel is remarkably enhanced by the annealing-swelling process, which is stronger between PVA/PVDF molecules than that between PVA molecules, promoting transformation of the α-phase into the electroactive β-phase PVDF and facilitating formation of a much more crystalline structure with high cross-linking density. Hence, an obvious piezoelectric response with high piezoelectric coefficient and electrical signal output with superior stability and sensitivity and excellent mechanical strength and stretchability was achieved for hydrogels. PVA/PVDF composite hydrogels with good cytocompatibility significantly promote proliferation, migration, and secretion of extracellular matrix proteins and growth factors of fibroblasts, possibly through activating the AKT and ERK1/2 signaling pathways. In a wound model of diabetic rats, piezoelectric hydrogels could not only rapidly attract wound exudate and maintain the wet environment of the wound bed but also convert the mechanical energy generated by rats' physical activities into electrical energy, so as to provide local piezoelectric stimulation to the wound bed evenly and symmetrically in real time. Such an effect significantly promotes re-epithelialization and collagen deposition and increases angiogenesis and secretion of growth factors in wound tissue. Besides, it regulates the macrophage phenotype from the M1 subtype (pro-inflammatory subtype) to the M2 subtype (anti-inflammatory subtype) and reduces the expression levels of inflammatory factors, thus accelerating wound healing. The development of such a novel piezoelectric hydrogel provides new therapeutic strategies for chronic wound healing.
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Affiliation(s)
- Limin Wang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu610065, China
| | - Yaru Yu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu610065, China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu610065, China
| | - Zhen Zhang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu610065, China
| | - Xueling Yuan
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu610065, China
| | - Jinlong Cao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu610065, China
| | - Weikun Meng
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu610065, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu610065, China
| | - Wei Lin
- West China Women's and Children's Hospital, Chengdu610065, China
| | - Guanglin Wang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu610065, China
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19
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Yang J, Liu X, Wang W, Chen Y, Liu J, Zhang Z, Wu C, Jiang X, Liang Y, Zhang J. Bioelectric fields coordinate wound contraction and re-epithelialization process to accelerate wound healing via promoting myofibroblast transformation. Bioelectrochemistry 2022; 148:108247. [PMID: 35994901 DOI: 10.1016/j.bioelechem.2022.108247] [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: 07/05/2022] [Revised: 08/09/2022] [Accepted: 08/15/2022] [Indexed: 11/02/2022]
Abstract
Electric fields (EFs) are thought to play a decisive role in wound healing. However, most studies focused on the effects of EF on single species of cells in vitro. Here, we aimed to investigate the coordination function of EFs on wound healing. Using a bamamini pig whole-layer wound model, we further evaluated the potential of EFs as a treatment modality by applying continuous and stable EF to the wound, and we found that EF promoted wound contraction and re-epithelialization in vivo, which accelerated wound healing. In vitro, we found that EFs significantly promoted the collective migration of HaCaT cells, guided HSF cells rearrangement, and promoted collagen secretion and myofibroblast transformation, and the electrotaxis of HaCaT cells was significantly enhanced on the collagen substrate and F-actin polarization at the leading edge of the cells was more pronounced. Overall, we determined that EF promotes wound contraction by promoting myofibrillar transformation, while accelerating the formation of collagen substrates, and the substrates could provide a good basis for electric field-guided re-epithelialization. EF may promote wound healing in multiple dimensions interaction and coordinate the whole process of wound healing. These findings provide support for the continued development of EF for wound treatment applications.
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Affiliation(s)
- Jinrui Yang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoqiang Liu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Wenping Wang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ying Chen
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jie Liu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ze Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chao Wu
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xupin Jiang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yi Liang
- Department of Burn and Plastic Surgery, Army 73rd Group Military Hospital, China.
| | - JiaPing Zhang
- Department of Plastic Surgery, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
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20
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Response of Osteoblasts to Electric Field Line Patterns Emerging from Molecule Stripe Landscapes. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12147329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Molecular surface gradients can constitute electric field landscapes and serve to control local cell adhesion and migration. Cellular responses to electric field landscapes may allow the discovery of routes to improve osseointegration of implants. Flat molecule aggregate landscapes of amine- or carboxyl-teminated dendrimers, amine-containing protein and polyelectrolytes were prepared on glass to provide lateral electric field gradients through their differing zeta potentials compared to the glass substrate. The local as well as the mesoscopic morphological responses of adhered osteoblasts (MG-63) with respect to the stripes were studied by means of Scanning Ion Conductance Microscopy (SICM) and Fluorescence Microscopy, in situ. A distinct spindle shape oriented parallel to the surface pattern as well as a preferential adhesion of the cells on the glass site have been observed at a stripe and spacing width of 20 μm. Excessive ruffling is observed at the spindle poles, where the cells extend. To explain this effect of material preference and electro-deformation, we put forward a retraction mechanism, a localized form of double-sided cathodic taxis.
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21
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Yuan Z, Yang Z, Li W, Wu A, Su Z, Jiang B, Ganesan S. Triphlorethol-A attenuates U251 human glioma cancer cell proliferation and ameliorates apoptosis through JAK2/STAT3 and p38 MAPK/ERK signaling pathways. J Biochem Mol Toxicol 2022; 36:e23138. [PMID: 35838116 DOI: 10.1002/jbt.23138] [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: 11/19/2021] [Revised: 03/29/2022] [Accepted: 05/30/2022] [Indexed: 11/07/2022]
Abstract
Glioma is the foremost recurrent type of brain tumor in humans; in particular, glioblastoma (GBM) is the main form of brain tumor (GBM) that is highly proliferative and impervious to apoptosis. Triphlorethol-A (TA), a phlorotannin isolated from Ecklonia cava, exhibited cytoprotective, antioxidant, and anticancer properties. However, the exact molecular action of TA in the U251 human GBM cells remains unknown. This may be the first report on the antiproliferative and apoptotic mechanisms of TA on GBM. The cytotoxicity, intracellular reactive oxygen species (ROS), matrix metalloproteinase (MMP), and cell apoptosis activity of TA have been evaluated by the MTT assay and by DCFH-DA, Rh-123, AO/EB, and western blot analysis. The results obtained showed that TA abridged the viability of U251 cells, while MMP increased apoptosis by increasing the ROS levels in a time-dependent manner. The results showed that a reduction in U251 cell proliferation was associated with the regulation of JAK2/STAT3 and p38 MAPK/ERK signaling pathways. TA was found to suppress pJAK, pSTAT3, p38 MAPK, and pERK phosphorylation, thereby causing Bax/Bcl-2 imbalance, activating the caspase cascade and cytochrome c, and inducing apoptosis. Our findings showed that the suppression of JAK2/STAT3 and p38 MAPK/ERK signaling by TA results in cell growth arrest and stimulation of apoptosis in GBM cells. These studies justify the protective remedy of TA against GBM.
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Affiliation(s)
- Zhihai Yuan
- Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, China
| | - Zhen Yang
- Department of Neurology, Xi'an Central Hospital, Xi'an, Shaanxi, China
| | - Weiqin Li
- Department of Pediatrics, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, China
| | - Aimei Wu
- Department of Neurology, Xi'an Fengcheng Hospital, Xi'an, Shaanxi, China
| | - Zhixiang Su
- Department of Oncology, Shaanxi Provincial Cancer Hospital, Xi'an, Shaanxi, China
| | - Bin Jiang
- Department of Neurosurgery, Xi'an Children's Hospital, Xi'an, Shaanxi, China
| | - Sakthivigneswari Ganesan
- Department of Botany, Avinashilingam Institute for Home Science & Higher Education for Women is a women's, Coimbatore, Tamil Nadu, India
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22
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Wu H, Wei S, Chen S, Pan H, Pan W, Huang S, Tsai M, Yang P. Metal-Free Perovskite Piezoelectric Nanogenerators for Human-Machine Interfaces and Self-Powered Electrical Stimulation Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105974. [PMID: 35445556 PMCID: PMC9218782 DOI: 10.1002/advs.202105974] [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] [Received: 12/24/2021] [Revised: 03/10/2022] [Indexed: 06/02/2023]
Abstract
Single crystal metal-free halide perovskites have received great attention in recent years owing to their excellent piezoelectric and ferroelectric properties. However, the nanotoxicity and piezoelectricity within the nanoscale of such materials have yet been reported for the demonstration of practical applications. In this work, the observation of intrinsic piezoelectricity in metal-free perovskite (MDABCO-NH4 I3 ) films using piezoresponse force microscopy (PFM) is reported. A cytotoxicity test is also performed on MDABCO-NH4 I3 to evaluate its low-toxic nature. The as-synthesized MDABCO-NH4 I3 is further integrated into a piezoelectric nanogenerator (PENG). The MDABCO-NH4 I3 -based PENG (MN-PENG) exhibits optimal output voltage and current of 15.9 V and 54.5 nA, respectively. In addition, the MN-PENG can serve as a self-powered strain sensor for human-machine interface applications or be adopted in in vitro electrical stimulation devices. This work demonstrates a path of perovskite-based PENG with high performance, low toxicity, and multifunctionality for future advanced wearable sensors and portable therapeutic systems.
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Affiliation(s)
- Han‐Song Wu
- Department of Materials Science and EngineeringNational Taiwan University of Science and TechnologyTaipei City10607Taiwan
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
| | - Shih‐Min Wei
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
| | - Shuo‐Wen Chen
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
| | - Han‐Chi Pan
- National Laboratory Animal CenterNational Applied Research LaboratoriesTaipei City11571Taiwan
| | - Wei‐Pang Pan
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
| | - Shih‐Min Huang
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
| | - Meng‐Lin Tsai
- Department of Materials Science and EngineeringNational Taiwan University of Science and TechnologyTaipei City10607Taiwan
| | - Po‐Kang Yang
- Department of Biomedical Sciences and EngineeringNational Central UniversityTaoyuan City32001Taiwan
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23
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Verdes M, Mace K, Margetts L, Cartmell S. Status and challenges of electrical stimulation use in chronic wound healing. Curr Opin Biotechnol 2022; 75:102710. [DOI: 10.1016/j.copbio.2022.102710] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/19/2021] [Accepted: 03/07/2022] [Indexed: 12/12/2022]
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24
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Davidian D, LeGro M, Barghouth PG, Rojas S, Ziman B, Maciel EI, Ardell D, Escobar AL, Oviedo NJ. Restoration of DNA integrity and cell cycle by electric stimulation in planarian tissues damaged by ionizing radiation. J Cell Sci 2022; 135:274829. [PMID: 35322853 PMCID: PMC9264365 DOI: 10.1242/jcs.259304] [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: 08/19/2021] [Accepted: 03/05/2022] [Indexed: 10/18/2022] Open
Abstract
Exposure to high levels of ionizing γ-radiation leads to irreversible DNA damage and cell death. Here, we establish that exogenous application of electric stimulation enables cellular plasticity to reestablish stem cell activity in tissues damaged by ionizing radiation. We show that sub-threshold direct current stimulation (DCS) rapidly restores pluripotent stem cell populations previously eliminated by lethally γ-irradiated tissues of the planarian flatworm Schmidtea mediterranea. Our findings reveal that DCS enhances DNA repair, transcriptional activity, and cell cycle entry in post-mitotic cells. These responses involve rapid increases in cytosolic [Ca2+] through the activation of L-type Cav channels and intracellular Ca2+ stores leading to the activation of immediate early genes and ectopic expression of stem cell markers in postmitotic cells. Overall, we show the potential of electric current stimulation to reverse the damaging effects of high dose γ-radiation in adult tissues. Furthermore, our results provide mechanistic insights describing how electric stimulation effectively translates into molecular responses capable of regulating fundamental cellular functions without the need for genetic or pharmacological intervention.
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Affiliation(s)
- Devon Davidian
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - Melanie LeGro
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - Paul G Barghouth
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - Salvador Rojas
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - Benjamin Ziman
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - Eli Isael Maciel
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, USA
| | - David Ardell
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Health Sciences Research Institute, University of California, Merced, USA
| | - Ariel L Escobar
- Department of Bioengineering, University of California, Merced, USA.,Health Sciences Research Institute, University of California, Merced, USA
| | - Néstor J Oviedo
- Department of Molecular & Cell Biology, University of California, Merced, USA.,Health Sciences Research Institute, University of California, Merced, USA
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25
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Rizqi J, Fitriawan AS. Low-dose Indonesian Aloe vera Increases Viability and Migration of the Fibroblast: An In Vitro Study. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Important stages in wound healing involve homeostasis, inflammation, proliferation, and remodeling phases. Fibroblasts are essential factors in the healing pathway through the process of cell proliferation and migration. Aloe vera contains various active compounds used for anti-inflammatory, antimicrobial, immunomodulatory, anticancer, and wound healing.
AIM: This study aimed to evaluate the effect of A. vera on the viability and migration of fibroblast cells.
MATERIALS AND METHODS: Fibroblasts were cultured in a monolayer with Dulbecco’s Modified Eagle Medium containing 10% fetal bovine serum, 1% pinstripe, and 0.5% fungizone. We use fresh A. vera leaves extracted with 95% ethanol. Cell viability will be evaluated using the MTT test and microscopic evaluation. Cell migration was tested using an in vitro wound scratch assay and analyzed with ImageJ software.
RESULTS: A. vera stimulated cell viability compared to control (p < 0.05). Administration of A. vera does not change shape and is not toxic to fibroblasts. A. vera stimulated cell migration at doses of 250, 125, 50, and 5 μg/mL compared to control after 24 h of intervention. At 48 h incubation, migration doses of 250, 50, and 5 μg/mL were higher than control (p < 0.05).
CONCLUSIONS: A. vera extract may effectively wound healing by increasing viability and migration of fibroblast cells.
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26
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Melotto G, Tunprasert T, Forss JR. The effects of electrical stimulation on diabetic ulcers of foot and lower limb: A systematic review. Int Wound J 2022; 19:1911-1933. [PMID: 35112496 DOI: 10.1111/iwj.13762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/13/2022] [Indexed: 01/04/2023] Open
Abstract
Diabetic foot ulcer (DFU) is a life-threatening condition affecting a third of diabetic patients. Many adjuvant therapies aimed at improving the healing rate (HR) and accelerating healing time are currently under investigation. Electrical stimulation (ES) is a physical-based therapy able to increase cells activity and migration into wound bed as well as inhibiting bacterial activity. The aim of this paper was to collect and analyse findings on the effects of ES used in combination with standard wound care (SWC) in the treatment of diabetic foot ulceration compared with SWC alone. A systematic review was performed to synthesise data from quantitative studies from eight databases. Article quality was assessed using the Crowe critical appraisal tool. Seven articles out of 560 publications met the inclusion criteria. A meta-analysis was not performed due to the heterogeneity of the studies and the results were narratively synthetised. Findings showed that HR appears to be higher among diabetic ulcers treated with ES; however, the reliability of these findings is affected by the small sample sizes of the studies. Furthermore, four studies are considered as moderate or high risk of bias. The evidence to suggest the systematic usage of ES in the treatment of DFUs is still insufficient.
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Affiliation(s)
- Gianluca Melotto
- School of Health Sciences, University of Brighton, Eastbourne, UK
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27
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Cheah YJ, Buyong MR, Mohd Yunus MH. Wound Healing with Electrical Stimulation Technologies: A Review. Polymers (Basel) 2021; 13:3790. [PMID: 34771347 PMCID: PMC8588136 DOI: 10.3390/polym13213790] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/16/2021] [Accepted: 10/29/2021] [Indexed: 01/22/2023] Open
Abstract
Electrical stimulation (ES) is an attractive field among clinicians in the topic of wound healing, which is common yet complicated and requires multidisciplinary approaches. The conventional dressing and skin graft showed no promise on complete wound closure. These urge the need for the exploration of electrical stimulation to supplement current wound care management. This review aims to provide an overview of electrical stimulation in wound healing. The mechanism of galvanotaxis related to wound repair will be reviewed at the cellular and molecular levels. Meanwhile, different modalities of externally applied electricity mimicking a physiologic electric field will be discussed and compared in vitro, in vivo, and clinically. With the emerging of tissue engineering and regenerative medicine, the integration of electroconductive biomaterials into modern miniaturised dressing is of interest and has become possible with the advancing understanding of smart biomaterials.
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Affiliation(s)
- Yt Jun Cheah
- Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56600, Malaysia;
| | - Muhamad Ramdzan Buyong
- Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Mohd Heikal Mohd Yunus
- Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56600, Malaysia;
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28
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Lee MH, Park YJ, Hong SH, Koo MA, Cho M, Park JC. Pulsed Electrical Stimulation Enhances Consistency of Directional Migration of Adipose-Derived Stem Cells. Cells 2021; 10:cells10112846. [PMID: 34831069 PMCID: PMC8616144 DOI: 10.3390/cells10112846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/16/2021] [Accepted: 10/20/2021] [Indexed: 12/31/2022] Open
Abstract
Electrical stimulation is a well-known strategy for regulating cell behavior, both in pathological and physiological processes such as wound healing, tissue regeneration, and embryonic development. Electrotaxis is the directional migration of cells toward the cathode or anode when subjected to electrical stimulation. In this study, we investigated the conditions for enhanced directional migration of electrically stimulated adipose-derived stem cells (ADSCs) during prolonged culture, using a customized agar-salt electrotaxis chamber. Exposure of ADSCs to a 1200 μA electric current for 3 h, followed by cessation of stimulation for 6 h and resumed stimulation for a further 3 h, increased directional cell migration toward the anode without inducing cell death. Moreover, Golgi polarization maintained the direction of polarity parallel to the direction of cell movement. Herein, we demonstrated that a pulsed electric current is sufficient to trigger directional migration of ADSCs in long-term culture while maintaining cell viability.
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Affiliation(s)
- Mi Hee Lee
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
| | - Ye Jin Park
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
- Department of Medical Device Engineering and Management, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Seung Hee Hong
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
- Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Min-Ah Koo
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
- Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Minyoung Cho
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
| | - Jong-Chul Park
- Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea; (M.H.L.); (Y.J.P.); (S.H.H.); (M.-A.K.); (M.C.)
- Department of Medical Device Engineering and Management, Yonsei University College of Medicine, Seoul 03722, Korea
- Department of Medical Engineering, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Korea
- Correspondence: ; Tel.: +82-2-2228-1917
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29
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Farber PL, Isoldi FC, Ferreira LM. Electric Factors in Wound Healing. Adv Wound Care (New Rochelle) 2021; 10:461-476. [PMID: 32870772 DOI: 10.1089/wound.2019.1114] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Significance: Electric factors such as electric charges, electrodynamic field, skin battery, and interstitial exclusion permeate wound healing physiology and physiopathology from injury to re-epithelialization. The understanding of how electric factors contribute to wound healing and how treatments may interfere with them is fundamental for the development of better strategies for the management of pathological scarring and chronic wounds. Recent Advances: Angiogenesis, cell migration, macrophage activation hemorheology, and microcirculation can interfere and be interfered with electric factors. New treatments with various types of electric currents, laser, light emitting diode, acupuncture, and weak electric fields applied directly on the wound have been developed to improve wound healing. Critical Issues: Despite the basic and clinical development, pathological scars such as keloids and chronic wounds are still a challenge. Future Directions: New treatments can be developed to improve skin wound healing taking into account the influence of electrical charges. Monitoring electrical activity during skin healing and the influence of treatments on hemorheology and microcirculation are examples of how to use knowledge of electrical factors to increase their effectiveness.
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Affiliation(s)
| | - Felipe Contoli Isoldi
- Surgery Department, Plastic Surgery Division, Postgraduated Program in Translational Surgery, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Lydia Masako Ferreira
- Surgery Department, Plastic Surgery Division, Postgraduated Program in Translational Surgery, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
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30
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Luo R, Dai J, Zhang J, Li Z. Accelerated Skin Wound Healing by Electrical Stimulation. Adv Healthc Mater 2021; 10:e2100557. [PMID: 33945225 DOI: 10.1002/adhm.202100557] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/06/2021] [Indexed: 01/28/2023]
Abstract
When the integrity of the skin got damaged, an endogenous electric field will be generated in the wound and a series of physiological reactions will be initiated to close the wound. The existence of the endogenous electric field of the wound has a promoting effect on all stages of wound healing. For wounds that cannot heal on their own, the exogenous electric field can assist the treatment. In this review, the effects of exogenous electrical stimulation on wound healing, such as the inflammation phase, blood flow, cell proliferation and migration, and the wound scarring is overviewed. This article also reviews the new electrical stimulation methods that have emerged in recent years, such as small power supplies, nanogenerators (NGs), and other physical, chemical or biological strategies. These new electrical stimulation methods and devices are safe, low-cost, stable, and small in size. The challenge and perspective are discussed for the future trends of the electrical stimulation treatment in accelerating skin wound healing.
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Affiliation(s)
- Ruizeng Luo
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
| | - Jieyu Dai
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
| | - Jiaping Zhang
- Department of Plastic Surgery State Key Laboratory of Trauma, Burns and Combined Injury Southwest Hospital Third Military Medical University (Army Medical University) Chongqing 400038 China
| | - Zhou Li
- College of Chemistry and Chemical Engineering Center of Nanoenergy Research Guangxi University Nanning 530004 China
- CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro–Nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China
- School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 China
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31
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Conta G, Libanori A, Tat T, Chen G, Chen J. Triboelectric Nanogenerators for Therapeutic Electrical Stimulation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007502. [PMID: 34014583 DOI: 10.1002/adma.202007502] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/03/2020] [Indexed: 06/12/2023]
Abstract
Current solutions developed for the purpose of in and on body (IOB) electrical stimulation (ES) lack autonomous qualities necessary for comfortable, practical, and self-dependent use. Consequently, recent focus has been placed on developing self-powered IOB therapeutic devices capable of generating therapeutic ES for human use. With the recent invention of the triboelectric nanogenerator (TENG), harnessing passive human biomechanical energy to develop self-powered systems has allowed for the introduction of novel therapeutic ES solutions. TENGs are especially effective at providing ES for IOB therapeutic systems given their bioconformability, low cost, simple manufacturability, and self-powering capabilities. Due to the key role of naturally induced electrical signals in many physiological functions, TENG-induced ES holds promise to provide a novel paradigm in therapeutic interventions. The aim here is to detail research on IOB TENG devices applied for ES-based therapy in the fields of regenerative medicine, neurology, rehabilitation, and pharmaceutical engineering. Furthermore, considering TENG-produced ES can be measured for sensing applications, this technology is paving the way to provide a fully autonomous personalized healthcare system, capable of IOB energy generation, sensing, and therapeutic intervention. Considering these grounds, it seems highly relevant to review TENG-ES research and applications, as they could constitute the foundation and future of personalized healthcare.
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Affiliation(s)
- Giorgio Conta
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Alberto Libanori
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Trinny Tat
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Guorui Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
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32
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Jiang TX, Li A, Lin CM, Chiu C, Cho JH, Reid B, Zhao M, Chow RH, Widelitz RB, Chuong CM. Global feather orientations changed by electric current. iScience 2021; 24:102671. [PMID: 34179734 PMCID: PMC8214094 DOI: 10.1016/j.isci.2021.102671] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/18/2021] [Accepted: 05/27/2021] [Indexed: 12/17/2022] Open
Abstract
During chicken skin development, each feather bud exhibits its own polarity, but a population of buds organizes with a collective global orientation. We used embryonic dorsal skin, with buds aligned parallel to the rostral-caudal body axis, to explore whether exogenous electric fields affect feather polarity. Interestingly, brief exogenous current exposure prior to visible bud formation later altered bud orientations. Applying electric pulses perpendicular to the body rostral-caudal axis realigned bud growth in a collective swirl, resembling an electric field pointing toward the anode. Perturbed buds show normal molecular expression and morphogenesis except for their altered orientation. Epithelial-mesenchymal recombination demonstrates the effects of exogenous electric fields are mediated through the epithelium. Small-molecule channel inhibitor screens show Ca2+ channels and PI3 Kinase are involved in controlling feather bud polarity. This work reveals the importance of bioelectricity in organ development and regeneration and provides an explant culture platform for experimentation.
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Affiliation(s)
- Ting-Xin Jiang
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
| | - Ang Li
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
| | - Chih-Min Lin
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
| | - Cathleen Chiu
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
| | - Jung-Hwa Cho
- Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Brian Reid
- Department of Ophthalmology & Vision Science, and Department of Dermatology, University of California, Davis, Sacramento, CA 95816, USA
| | - Min Zhao
- Department of Ophthalmology & Vision Science, and Department of Dermatology, University of California, Davis, Sacramento, CA 95816, USA
| | - Robert H. Chow
- Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Randall Bruce Widelitz
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Ángeles, CA 90033, USA
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33
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Han SJ, Noh M, Jang J, Lee JB, Kim KS. Electric fields regulate cellular elasticity through intracellular Ca 2+ concentrations. J Cell Physiol 2021; 236:7450-7463. [PMID: 33993476 DOI: 10.1002/jcp.30417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 04/25/2021] [Accepted: 04/28/2021] [Indexed: 11/06/2022]
Abstract
Cellular elasticity is a key factor related to a broad range of physiological and pathological processes. The elasticity of a single cell has thus emerged as a potential biomarker to characterize the cellular state. Both internal and external stimuli affect cellular elasticity, and changes in elasticity can cause alterations in cellular characteristics or function. The application of electric fields (EFs) is a promising method that can be used to change cellular elasticity; however, the mechanisms underlying its effect remain unknown. Here, we demonstrate EFs-induced elasticity changes in human dermal fibroblasts and discuss the underlying mechanism related to actin polymerization. Cellular elasticity increases after EF (50 mV/mm) stimulation, reaching a maximum at 30 min before decreasing between 30 and 120 min. The cellular elasticity under EF stimulation, regardless of stimulation time, is higher than that of the control. F-actin regulates the elasticity of cells through gelsolin activation. We show changes in intracellular Ca2+ caused by EFs, which induced gelsolin activation and F-actin content changes. This result demonstrates a series of processes in which external electrical stimulation conditions regulate cellular elasticity.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea.,Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
| | - Minjoo Noh
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jihui Jang
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jun Bae Lee
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
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34
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Uemura M, Sugimoto M, Yoshikawa Y, Hiramatsu T, Inoue T. Monophasic Pulsed Current Stimulation of Duty Cycle 10% Promotes Differentiation of Human Dermal Fibroblasts into Myofibroblasts. Phys Ther Res 2021; 24:145-152. [PMID: 34532210 PMCID: PMC8419484 DOI: 10.1298/ptr.e10064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 02/02/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Many clinical trials have shown the therapeutic effects of electrical stimulation (ES) in various conditions. Our previous studies showed that ES (200 μA and 2 Hz) promotes migration and proliferation of human dermal fibroblasts (HDFs). However, the effective duty cycle and the effect of ES on myofibroblast differentiation are unclear. This study aimed to investigate the relationship between duty cycle and myofibroblast differentiation. METHODS HDFs were subjected to ES (200 μA and 2 Hz) for 24 h with the duty cycle adapted at 0% (control), 10%, 50%, or 90%. α-smooth muscle actin (SMA) and transforming growth factor (TGF)-β1 mRNA and α-SMA protein expressions were assessed. Collagen gel contraction was observed for 48 h after ES initiation and the gel area was measured. Cell viability and pH of culture medium were analyzed for cytotoxicity of the ES. RESULTS Cell viabilities were decreased in the 50% and the 90% groups but ES did not influence on pH of culture media. ES with a duty cycle of 10% significantly promoted the mRNA expression of α-SMA and TGF-β1. α-SMA protein expression in the 10% group was also significantly higher than that of the control group. Collagen gel subjected to ES with a duty cycle of 10% was contracted. CONCLUSION Duty cycle can influence on myofibroblast differentiation and ES with a duty cycle 10% is the effective for wound healing.
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Affiliation(s)
- Mikiko Uemura
- Faculty of Health Science, Department of Rehabilitation, Kansai University of Welfare Sciences, Japan
| | | | - Yoshiyuki Yoshikawa
- Faculty of Health Sciences, Department of Rehabilitation, Naragakuen University, Japan
| | | | - Taketo Inoue
- Department of Emergency, Disaster and Critical Care Medicine, Hyogo College of Medicine, Japan
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35
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Korupalli C, Li H, Nguyen N, Mi F, Chang Y, Lin Y, Sung H. Conductive Materials for Healing Wounds: Their Incorporation in Electroactive Wound Dressings, Characterization, and Perspectives. Adv Healthc Mater 2021; 10:e2001384. [PMID: 33274846 DOI: 10.1002/adhm.202001384] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/06/2020] [Indexed: 12/11/2022]
Abstract
The use of conductive materials to promote the activity of electrically responsive cells is an effective means of accelerating wound healing. This article focuses on recent advancements in conductive materials, with emphasis on overviewing their incorporation with non-conducting polymers to fabricate electroactive wound dressings. The characteristics of these electroactive dressings are deliberated, and the mechanisms on how they accelerate the wound healing process are discussed. Potential directions for the future development of electroactive wound dressings and their potential in monitoring the course of wound healing in vivo concomitantly are also proposed.
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Affiliation(s)
- Chiranjeevi Korupalli
- Department of Chemical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu Taiwan 300 ROC
| | - Hui Li
- Department of Chemical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu Taiwan 300 ROC
| | - Nhien Nguyen
- Department of Chemical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu Taiwan 300 ROC
| | - Fwu‐Long Mi
- Department of Biochemistry and Molecular Cell Biology School of Medicine College of Medicine Taipei Medical University Taipei Taiwan 110 ROC
| | - Yen Chang
- Taipei Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation and School of Medicine Tzu Chi University Hualien Taiwan 970 ROC
| | - Yu‐Jung Lin
- Department of Chemical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu Taiwan 300 ROC
- Research Center for Applied Sciences Academia Sinica Taipei Taiwan 11529 ROC
| | - Hsing‐Wen Sung
- Department of Chemical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu Taiwan 300 ROC
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Casella A, Panitch A, Leach JK. Endogenous Electric Signaling as a Blueprint for Conductive Materials in Tissue Engineering. Bioelectricity 2021; 3:27-41. [PMID: 34476376 PMCID: PMC8370482 DOI: 10.1089/bioe.2020.0027] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Bioelectricity plays an important role in cell behavior and tissue modulation, but is understudied in tissue engineering research. Endogenous electrical signaling arises from the transmembrane potential inherent to all cells and contributes to many cell behaviors, including migration, adhesion, proliferation, and differentiation. Electrical signals are also involved in tissue development and repair. Synthetic and natural conductive materials are under investigation for leveraging endogenous electrical signaling cues in tissue engineering applications due to their ability to direct cell differentiation, aid in maturing electroactive cell types, and promote tissue functionality. In this review, we provide a brief overview of bioelectricity and its impact on cell behavior, report recent literature using conductive materials for tissue engineering, and discuss opportunities within the field to improve experimental design when using conductive substrates.
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Affiliation(s)
- Alena Casella
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
| | - Alyssa Panitch
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
- Department of Surgery and UC Davis Health, Sacramento, California, USA
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, California, USA
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Zhao Y, Bunch TD, Isom SC. Effects of electrical biostimulation and silver ions on porcine fibroblast cells. PLoS One 2021; 16:e0246847. [PMID: 33566869 PMCID: PMC7875371 DOI: 10.1371/journal.pone.0246847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/26/2021] [Indexed: 11/19/2022] Open
Abstract
The medical applications of electrical biostimulation and silver ions have been evaluated in laboratory experiments and clinical studies for more than two decades. Their effects on preventing infection and promoting wound healing have been described. However, little is known about the role of electrical biostimulation and/or silver ion on changes in cellular transcriptome dynamics. To our knowledge, few studies have been conducted to investigate the potential of electrical biostimulation and silver ions in cell reprogramming. Besides, it is essential to assess any possible adverse effects or potential benefits of the silver ions on mammalian cells to address its safety concerns and to improve silver medical products. In this study, we investigated transcriptomic changes in porcine fibroblast cells in response to electrical biostimulation in the presence of silver ions. Exposed cells presented distinct morphological changes after treatment, which was mainly due to the exposure of silver ions rather than the electrical current itself. Gene expression analyses suggested that electrical biostimulation and silver ions did not increase the expression of pluripotency genes. Interestingly, a set of genes related to cellular metabolic processes were differentially expressed after cells were exposed to electrically generated silver ions for 21 hours. We found that 2.00 mg/L of electrically generated silver ion caused an increase of ATP generation and an increase of the total pool of NAD+ and NADH, while ROS production did not change. Aside from toxic effects, the results reported herein demonstrate the alternative effects of silver ions on mammalian cells, especially an oxidative phosphorylation burst. To our knowledge, this response of mammalian cells to silver ions has not been described previously. Although the function of this burst is not understood, it may lead to alterations in cellular activities such as metabolic remodeling and cell reprogramming, and/or serve an as-yet unknown function in neutralization or detoxification of the silver ions within the cells.
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Affiliation(s)
- Yuanfeng Zhao
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - Thomas D. Bunch
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
| | - S. Clay Isom
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah, United States of America
- * E-mail:
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Gonçalves JP, de Oliveira CC, da Silva Trindade E, Riegel-Vidotti IC, Vidotti M, Simas FF. In vitro biocompatibility screening of a colloidal gum Arabic-polyaniline conducting nanocomposite. Int J Biol Macromol 2021; 173:109-117. [PMID: 33476624 DOI: 10.1016/j.ijbiomac.2021.01.101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 02/05/2023]
Abstract
Although polyaniline (PANI) is a widely investigated conductive polymer for biological applications, studies addressing the biocompatibility of colloidal PANI dispersions are scarcely found in the literature of the area. Therefore, PANI nanoparticles stabilized by the natural polysaccharide gum Arabic (GA) were screened for their biocompatibility. The GA successfully stabilized the colloidal PANI-GA dispersions when exposed to a protein-rich medium, showing compatibility with the biological environment. The results obtained from a series of in vitro assays showed that, after up to 48 h of exposure to a range of PANI-GA concentrations (1-50 μg/mL), both mouse BALB/3T3 fibroblasts and RAW 264.7 macrophages showed no evidence of change in cellular proliferation, viability and metabolic activity. An increase in macrophage granularity poses as evidence of phagocytic uptake of PANI-GA, without resulting activation of this cell type. Additionally, the PANI-GA nanoparticles modulated the cell morphology changes induced on fibroblasts by GA in a concentration-dependent manner. Thus, this unprecedented biocompatibility study of PANI nanoparticles stabilized by a plant gum exudate polysaccharide showed promising results. This simple biomaterial might be further developed into colloidal formulations for biological and biomedical applications, taking advantage of its versatility, biocompatibility, and conductive properties.
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Affiliation(s)
- Jenifer Pendiuk Gonçalves
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Carolina Camargo de Oliveira
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Edvaldo da Silva Trindade
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Izabel Cristina Riegel-Vidotti
- Macromolecules and Interfaces Research Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Marcio Vidotti
- Macromolecules and Interfaces Research Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil
| | - Fernanda Fogagnoli Simas
- Laboratory of Inflammatory and Neoplastic Cells/Laboratory of Sulfated Polysaccharides Investigation, Cell Biology Department, Section of Biological Sciences, Universidade Federal do Paraná (UFPR), Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil; Macromolecules and Interfaces Research Group, Department of Chemistry, UFPR, Av Cel Francisco H dos Santos, s/n, CEP 81530-980 Curitiba, PR, Brazil.
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Zhang R, Han Y, Zhang L, Chen Q, Ding M, Shi T. Migration and deformation of polyelectrolyte vesicle through a pore in electric field. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125560] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang XF, Li ML, Fang QQ, Zhao WY, Lou D, Hu YY, Chen J, Wang XZ, Tan WQ. Flexible electrical stimulation device with Chitosan-Vaseline® dressing accelerates wound healing in diabetes. Bioact Mater 2021; 6:230-243. [PMID: 32913931 PMCID: PMC7451868 DOI: 10.1016/j.bioactmat.2020.08.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 12/16/2022] Open
Abstract
The healing process of diabetic wounds is typically disordered and prolonged and requires both angiogenesis and epithelialization. Disruptions of the endogenous electric fields (EFs) may lead to disordered cell migration. Electrical stimulation (ES) that mimics endogenous EFs is a promising method in treating diabetic wounds; however, a microenvironment that facilitates cell migration and a convenient means that can be used to apply ES are also required. Chitosan-Vaseline® gauze (CVG) has been identified to facilitate wound healing; it also promotes moisture retention and immune regulation and has antibacterial activity. For this study, we created a wound dressing using CVG together with a flexible ES device and further evaluated its potential as a treatment for diabetic wounds. We found that high voltage monophasic pulsed current (HVMPC) promoted healing of diabetic wounds in vivo. In studies carried out in vitro, we found that HVMPC promoted the proliferation and migration of human umbilical vein endothelial cells (HUVECs) by activating PI3K/Akt and ERK1/2 signaling. Overall, we determined that the flexible ES-chitosan dressing may promoted healing of diabetic wounds by accelerating angiogenesis, enhancing epithelialization, and inhibiting scar formation. These findings provide support for the ongoing development of this multidisciplinary product for the care and treatment of diabetic wounds.
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Affiliation(s)
- Xiao-Feng Wang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
| | - Meng-Lu Li
- Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang Province, PR China
| | - Qing-Qing Fang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
| | - Wan-Yi Zhao
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
| | - Dong Lou
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
| | - Yan-Yan Hu
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
| | - Jun Chen
- Innovation Center for Signaling Network, College of Life Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang Province, PR China
| | - Xiao-Zhi Wang
- Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang Province, PR China
| | - Wei-Qiang Tan
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang Province, PR China
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41
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Wang L, Hu S, Ullah MW, Li X, Shi Z, Yang G. Enhanced cell proliferation by electrical stimulation based on electroactive regenerated bacterial cellulose hydrogels. Carbohydr Polym 2020; 249:116829. [DOI: 10.1016/j.carbpol.2020.116829] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 01/09/2023]
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42
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Li M, Wang X, Rajagopalan P, Zhang L, Zhan S, Huang S, Li W, Zeng X, Ye Q, Liu Y, Zhong K, Kim JM, Luo J, Dong S, Gu R, Wang X, Tan WQ. Toward Controlled Electrical Stimulation for Wound Healing Based on a Precision Layered Skin Model. ACS APPLIED BIO MATERIALS 2020; 3:8901-8910. [DOI: 10.1021/acsabm.0c01190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Menglu Li
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Xiaofeng Wang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province PR China
| | - Pandey Rajagopalan
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Liang Zhang
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Shijie Zhan
- Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom
| | - Shuyi Huang
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Wei Li
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Xiangyu Zeng
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Qikai Ye
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Yulu Liu
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Kai Zhong
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Jong Min Kim
- Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom
| | - Jikui Luo
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Shurong Dong
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Rongcheng Gu
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
| | - Xiaozhi Wang
- Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of ISEE, Zhejiang University, Hangzhou 310027, China
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310018, China
| | - Wei-Qiang Tan
- Department of Plastic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou 310016, Zhejiang Province PR China
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France LA, Fancey KS. Viscoelastically active sutures - A stitch in time? MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 121:111695. [PMID: 33579505 DOI: 10.1016/j.msec.2020.111695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 01/17/2023]
Abstract
We present results to show that a commercially available polypropylene suture filament (Ethicon Prolene), following annealing and tensile creep can, after creep load removal, release viscoelastically stored energy over a period of several weeks. Specifically, over 0.1-1000 h, the suture undergoes a time-dependent contraction of ~4% and, following a short recovery time (~3 min) to a fixed strain, produces a progressively increasing recovery force of ~0.1-1 N. We suggest that this time-dependent energy release may facilitate wound healing by the action of viscoelastically induced mechanotransduction (VIM). Moreover, our recent (published) findings have led to evidence of reduced hydrophobicity from viscoelastically recovering polymeric filaments and speculation that this may emanate from the long-term release of electric charges. Thus, we propose that the latter may enhance the VIM mechanism. In this paper, we report on the direct detection of these charges and the first findings from an investigation involving the presence of cell cultures on Prolene samples that are (i) viscoelastically recovering, (ii) annealed only and (iii) in as-received condition. From (i), the results demonstrate a significant increase in cell motility, with migration towards the suture, compared to (ii) and (iii). This suggests greater stimulation of the wound healing process, an effect which is expected to continue for the duration of the viscoelastic recovery period.
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Affiliation(s)
| | - Kevin S Fancey
- Department of Engineering, University of Hull, HU6 7RX, UK
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Mao L, Hu S, Gao Y, Wang L, Zhao W, Fu L, Cheng H, Xia L, Xie S, Ye W, Shi Z, Yang G. Biodegradable and Electroactive Regenerated Bacterial Cellulose/MXene (Ti 3 C 2 T x ) Composite Hydrogel as Wound Dressing for Accelerating Skin Wound Healing under Electrical Stimulation. Adv Healthc Mater 2020; 9:e2000872. [PMID: 32864898 DOI: 10.1002/adhm.202000872] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/22/2020] [Indexed: 01/07/2023]
Abstract
Traditional wound dressings mainly participate in the passive healing processes and are rarely engaged in active wound healing by stimulating skin cell behaviors. Electrical stimulation (ES) has been known to regulate skin cell behaviors. Herein, a series of multifunctional hydrogels based on regenerated bacterial cellulose (rBC) and MXene (Ti3 C2 Tx ) are first developed that can electrically modulate cell behaviors for active skin wound healing under external ES. The composite hydrogel with 2 wt% MXene (rBC/MXene-2%) exhibits the highest electrical conductivity and the best biocompatibility. Meanwhile, the rBC/MXene-2% hydrogel presents desired mechanical properties, favorable flexibility, good biodegradability, and high water-uptake capacity. An in vivo study using a rat full-thickness defect model reveals that this rBC/MXene hydrogel exhibits a better therapeutic effect than the commercial Tegaderm film. More importantly, in vitro and in vivo data demonstrate that coupling with ES, the hydrogel can significantly enhance the proliferation activity of NIH3T3 cells and accelerate the wound healing process, as compared to non-ES controls. This study suggests that the biodegradable and electroactive rBC/MXene hydrogel is an appealing candidate as a wound dressing for skin wound healing, while also providing an effective synergistic therapeutic strategy for accelerating wound repair process through coupling ES with the hydrogel dressing.
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Affiliation(s)
- Lin Mao
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Sanming Hu
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Yihua Gao
- Center for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics School of Physics Huazhong University of Science and Technology Wuhan 430074 China
| | - Li Wang
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Weiwei Zhao
- School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan 430070 China
| | - Lina Fu
- Department of Head and Neck Surgery & Communication Sciences School of Medicine Duke University Durham 27710 USA
| | - Haoyan Cheng
- School of Materials Science and Engineering Henan University of Science and Technology Luoyang 471023 China
| | - Lin Xia
- Key Laboratory of Molecular Biophysics of MOE College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Shangxian Xie
- Key Laboratory of Molecular Biophysics of MOE College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Weiliang Ye
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Zhijun Shi
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
| | - Guang Yang
- National Engineering Research Center for Nano‐Medicine Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China
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Urabe H, Akimoto R, Kamiya S, Hosoki K, Ichikawa H, Nishiyama T. Effects of pulsed electrical stimulation on growth factor gene expression and proliferation in human dermal fibroblasts. Mol Cell Biochem 2020; 476:361-368. [PMID: 32968926 DOI: 10.1007/s11010-020-03912-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 09/15/2020] [Indexed: 01/25/2023]
Abstract
Human dermal fibroblast proliferation plays an important role in skin wound healing, and electrical stimulation (ES) promotes skin wound healing. Although the use of ES for skin wound healing has been investigated, the mechanism underlying the effects of ES on cells is still unclear. This study examined the effects of pulsed electrical stimulation (PES) on human dermal fibroblasts. Normal adult human dermal fibroblasts were exposed to a frequency of 4800 Hz, voltage of 1-5 V, and PES exposure time of 15, 30, and 60 min. Dermal fibroblast proliferation and growth factor gene expression were investigated for 6-48 h post PES. Dermal fibroblast proliferation significantly increased from 24 to 48 h post PES at a voltage of 5 V and PES exposure time of 60 min. Under the same conditions, post PES, platelet-derived growth factor subunit A (PDGFA), fibroblast growth factor 2 (FGF2), and transforming growth factor beta 1 (TGF-β1) expression significantly increased from 6 to 24 h, 12 to 48 h, and 24 to 48 h, respectively. Imatinib, a specific inhibitor of platelet-derived growth factor receptor, significantly inhibited the proliferation of dermal fibroblasts promoted by PES, suggesting that PDGFA expression, an early response of PES, was involved in promoting the cell proliferation. Therefore, PES at 4800 Hz may initially promote PDGFA expression and subsequently stimulate the expression of two other growth factors, resulting in dermal fibroblast proliferation after 24 h or later. In conclusion, PES may activate the cell growth phase of wound healing.
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Affiliation(s)
- Hiroya Urabe
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan.
| | - Ryuji Akimoto
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan
| | - Shohei Kamiya
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan
| | - Katsu Hosoki
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan
| | - Hideyuki Ichikawa
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan
| | - Toshio Nishiyama
- Homer Ion Laboratory Co., Ltd., 17-2 Shinsen-cho, Shibuya-ku, Tokyo, 150-0045, Japan.,Scleroprotein Research Institute, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183-8509, Japan
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Zhao S, Mehta AS, Zhao M. Biomedical applications of electrical stimulation. Cell Mol Life Sci 2020; 77:2681-2699. [PMID: 31974658 PMCID: PMC7954539 DOI: 10.1007/s00018-019-03446-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/12/2019] [Accepted: 12/27/2019] [Indexed: 12/14/2022]
Abstract
This review provides a comprehensive overview on the biomedical applications of electrical stimulation (EStim). EStim has a wide range of direct effects on both biomolecules and cells. These effects have been exploited to facilitate proliferation and functional development of engineered tissue constructs for regenerative medicine applications. They have also been tested or used in clinics for pain mitigation, muscle rehabilitation, the treatment of motor/consciousness disorders, wound healing, and drug delivery. However, the research on fundamental mechanism of cellular response to EStim has fell behind its applications, which has hindered the full exploitation of the clinical potential of EStim. Moreover, despite the positive outcome from the in vitro and animal studies testing the efficacy of EStim, existing clinical trials failed to establish strong, conclusive supports for the therapeutic efficacy of EStim for most of the clinical applications mentioned above. Two potential directions of future research to improve the clinical utility of EStim are presented, including the optimization and standardization of the stimulation protocol and the development of more tissue-matching devices.
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Affiliation(s)
- Siwei Zhao
- Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, 985965 Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Surgery, University of Nebraska Medical Center, Nebraska Medical Center 985965, Omaha, NE, 68198, USA.
| | - Abijeet Singh Mehta
- Department of Dermatology, University of California, Davis, CA, USA
- Department of Ophthalmology & Vision Science, Institute for Regenerative Cures, Center for Neuroscience, University of California at Davis, School of Medicine, Suite 1630, Room 1617, 2921 Stockton Blvd., Sacramento, CA, 95817, USA
| | - Min Zhao
- Department of Dermatology, University of California, Davis, CA, USA
- Department of Ophthalmology & Vision Science, Institute for Regenerative Cures, Center for Neuroscience, University of California at Davis, School of Medicine, Suite 1630, Room 1617, 2921 Stockton Blvd., Sacramento, CA, 95817, USA
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Rouabhia M, Park HJ, Abedin‐Do A, Douville Y, Méthot M, Zhang Z. Electrical stimulation promotes the proliferation of human keratinocytes, increases the production of keratin 5 and 14, and increases the phosphorylation of ERK1/2 and p38 MAP kinases. J Tissue Eng Regen Med 2020; 14:909-919. [DOI: 10.1002/term.3040] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 03/14/2020] [Accepted: 03/23/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine DentaireUniversité Laval Quebec Canada
| | - Hyun Jin Park
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine DentaireUniversité Laval Quebec Canada
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de QuébecUniversité Laval Quebec Canada
| | - Atieh Abedin‐Do
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine DentaireUniversité Laval Quebec Canada
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de QuébecUniversité Laval Quebec Canada
| | - Yvan Douville
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de QuébecUniversité Laval Quebec Canada
| | - Mireille Méthot
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de QuébecUniversité Laval Quebec Canada
| | - Ze Zhang
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de QuébecUniversité Laval Quebec Canada
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Theodoro V, de Oliveira Fujii L, Lucke LD, Bortolazzo FO, Silva DFD, Carneiro GD, do Amaral MEC, de Oliveira CA, de Andrade TAM, Bombeiro AL, Vicente CP, do Bomfim FRC, de Oliveira ALR, Bagnato VS, Esquisatto MAM, Mendonça FAS, Dos Santos GMT, de Aro AA. Inhibitory effect of red LED irradiation on fibroblasts and co-culture of adipose-derived mesenchymal stem cells. Heliyon 2020; 6:e03882. [PMID: 32426535 PMCID: PMC7226671 DOI: 10.1016/j.heliyon.2020.e03882] [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: 01/27/2020] [Revised: 03/27/2020] [Accepted: 04/27/2020] [Indexed: 12/29/2022] Open
Abstract
The objective of this study was to evaluate the effects of red Light Emiting Diode (red LED) irradiation on fibroblasts in adipose-derived mesenchymal stem cells (ASC) co-culture on the scratch assay. We hypothesized that red LED irradiation could stimulate paracrine secretion of ASC, contributing to the activation of genes and molecules involved in cell migration and tissue repair. ASC were co-cultured with NIH/3T3 fibroblasts through direct contact and subjected to red LED irradiation (1.45 J/cm2/5min6s) after the scratch assay, during 4 days. Four groups were established: fibroblasts (F), fibroblasts + LED (FL), fibroblasts + ASC (FC) and fibroblasts + LED + ASC (FLC). The analyzes were based on Ctgf and Reck expression, quantification of collagen types I and III, tenomodulin, VEGF, TGF-β1, MMP-2 and MMP-9, as well as viability analysis and cell migration. Higher Ctgf expression was observed in FC compared to F. Group FC presented higher amount of tenomodulin and VEGF in relation to the other groups. In the cell migration analysis, a higher number of cells was observed in the scratched area of the FC group on the 4th day. There were no differences between groups considering cell viability, Reck expression, amount of collagen types I and III, MMP-2 and TGF-β1, whereas TGF-β1 was not detected in the FC group and the MMP-9 in none of the groups. Our hypothesis was not supported by the results because the red LED irradiation decreased the healing response of ASC. An inhibitory effect of the LED irradiation associated with ASC co-culture was observed with reduction of the amount of TGF-β1, VEGF and tenomodulin, possibly involved in the reduced cell migration. In turn, the ASC alone seem to have modulated fibroblast behavior by increasing Ctgf, VEGF and tenomodulin, leading to greater cell migration. In conclusion, red LED and ASC therapy can have independent effects on fibroblast wound healing, but the combination of both does not have a synergistic effect. Therefore, future studies with other parameters of red LED associated with ASC should be tested aiming clinical application for tissue repair.
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Affiliation(s)
- Viviane Theodoro
- Biomedical Sciences Graduate Program, University Center of Herminio Ometto Foundation / FHO, Araras, São Paulo, Brazil
| | - Lucas de Oliveira Fujii
- Biomedical Sciences Graduate Program, University Center of Herminio Ometto Foundation / FHO, Araras, São Paulo, Brazil
| | - Leticia Dudri Lucke
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Fernanda Oriani Bortolazzo
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | | | - Giane Daniela Carneiro
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | | | - Camila Andréa de Oliveira
- Biomedical Sciences Graduate Program, University Center of Herminio Ometto Foundation / FHO, Araras, São Paulo, Brazil
| | | | - André Luis Bombeiro
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Cristina Pontes Vicente
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | | | | | | | | | | | - Gláucia Maria Tech Dos Santos
- Biomedical Sciences Graduate Program, University Center of Herminio Ometto Foundation / FHO, Araras, São Paulo, Brazil
| | - Andrea Aparecida de Aro
- Biomedical Sciences Graduate Program, University Center of Herminio Ometto Foundation / FHO, Araras, São Paulo, Brazil.,Department of Structural and Functional Biology, Institute of Biology, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
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Gouarderes S, Doumard L, Vicendo P, Mingotaud AF, Rols MP, Gibot L. Electroporation does not affect human dermal fibroblast proliferation and migration properties directly but indirectly via the secretome. Bioelectrochemistry 2020; 134:107531. [PMID: 32335353 DOI: 10.1016/j.bioelechem.2020.107531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/03/2020] [Accepted: 04/04/2020] [Indexed: 12/29/2022]
Abstract
Aesthetic wound healing is often experienced by patients after electrochemotherapy. We hypothesized that pulsed electric fields applied during electrochemotherapy (ECT) or gene electrotransfer (GET) protocols could stimulate proliferation and migration of human cutaneous cells, as described in protocols for electrostimulation of wound healing. We used videomicroscopy to monitor and quantify in real time primary human dermal fibroblast behavior when exposed in vitro to ECT and GET electric parameters, in terms of survival, proliferation and migration in a calibrated scratch wound assay. Distinct electric field intensities were applied to allow gradient in cell electropermeabilization while maintaining reversible permeabilization conditions, in order to mimic in vivo heterogeneous electric field distribution of complex tissues. Neither galvanotaxis nor statistical modification of fibroblast migration were observed in a calibrated scratch wound assay after application of ECT and GET parameters. The only effect on proliferation was observed under the strongest GET conditions, which drastically reduced the number of fibroblasts through induction of mitochondrial stress and apoptosis. Finally, we found that 24 h-conditioned cell culture medium by electrically stressed fibroblasts tended to increase the migration properties of cells that were not exposed to electric field. RT-qPCR array indicated that several growth factor transcripts were strongly modified after electroporation.
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Affiliation(s)
- Sara Gouarderes
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Layal Doumard
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France; Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Patricia Vicendo
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Anne-Françoise Mingotaud
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Marie-Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Laure Gibot
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France; Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France.
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50
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Chen C, Bai X, Ding Y, Lee IS. Electrical stimulation as a novel tool for regulating cell behavior in tissue engineering. Biomater Res 2019; 23:25. [PMID: 31844552 PMCID: PMC6896676 DOI: 10.1186/s40824-019-0176-8] [Citation(s) in RCA: 198] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/27/2019] [Indexed: 12/18/2022] Open
Abstract
Recently, electrical stimulation as a physical stimulus draws lots of attention. It shows great potential in disease treatment, wound healing, and mechanism study because of significant experimental performance. Electrical stimulation can activate many intracellular signaling pathways, and influence intracellular microenvironment, as a result, affect cell migration, cell proliferation, and cell differentiation. Electrical stimulation is using in tissue engineering as a novel type of tool in regeneration medicine. Besides, with the advantages of biocompatible conductive materials coming into view, the combination of electrical stimulation with suitable tissue engineered scaffolds can well combine the benefits of both and is ideal for the field of regenerative medicine. In this review, we summarize the various materials and latest technologies to deliver electrical stimulation. The influences of electrical stimulation on cell alignment, migration and its underlying mechanisms are discussed. Then the effect of electrical stimulation on cell proliferation and differentiation are also discussed.
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Affiliation(s)
- Cen Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018 People’s Republic of China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, 310018 People’s Republic of China
| | - Xue Bai
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018 People’s Republic of China
| | - Yahui Ding
- Department of Cardiology, Zhejiang Provincial People’s Hospital, Hangzhou, 310014 People’s Republic of China
- People’s Hospital of Hangzhou Medical College, Hangzhou, 310014 People’s Republic of China
| | - In-Seop Lee
- Institute of Natural Sciences, Yonsei University, 134 Shinchon-dong, Seodaemoon-gu, Seoul, 03722 Republic of Korea
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