1
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Urabe H, Akimoto R, Kamiya S, Hosoki K, Ichikawa H, Nishiyama T. Effects of pulsed electrical stimulation on α-smooth muscle actin and type I collagen expression in human dermal fibroblasts. Biosci Biotechnol Biochem 2024; 88:522-528. [PMID: 38341279 DOI: 10.1093/bbb/zbae017] [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: 11/07/2023] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Pulsed electrical stimulation (PES) is known to affect cellular activities. We previously found PES to human dermal fibroblasts (HFs) promoted platelet-derived growth factor subunit A (PDGFA) gene expression, which enhanced proliferation. In this study, we investigated PES effects on fibroblast collagen production and differentiation into myofibroblasts. HFs were electrically stimulated at 4800 Hz and 5 V for 60 min. Imatinib, a specific inhibitor of PDGF receptors, was treated before PES. After 6 h of PES, PDGFA, α-smooth muscle actin (α-SMA), and collagen type I α1 chain gene expressions were upregulated in PES group. Imatinib suppressed the promoted expression except for PDGFA. Immunofluorescence staining and enzyme-linked immunosorbent assay showed the production of α-SMA and collagen I was enhanced in PES group but suppressed in PES + imatinib group at 48 h after PES. Therefore, PES promotes the production of α-SMA and collagen I in fibroblasts, which is triggered by PDGFA that is upregulated early after PES.
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Affiliation(s)
| | | | | | | | | | - Toshio Nishiyama
- Homer Ion Laboratory Co., Ltd., Tokyo, Japan
- Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
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2
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Babaluei M, Mojarab Y, Mottaghitalab F, Saeb MR, Farokhi M. Conductive hydrogels based on tragacanth and silk fibroin containing dopamine functionalized carboxyl-capped aniline pentamer: Merging hemostasis, antibacterial, and anti-oxidant properties into a multifunctional hydrogel for burn wound healing. Int J Biol Macromol 2024; 261:129932. [PMID: 38309399 DOI: 10.1016/j.ijbiomac.2024.129932] [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: 11/01/2023] [Revised: 01/20/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Hydrogels possessing both conductive characteristics and notable antibacterial and antioxidant properties hold considerable significance within the realm of wound healing and recovery. The object of current study is the development of conductive hydrogels with antibacterial and antioxidant properties, emphasizing their potential for effective wound healing, especially in treating third-degree burns. For this purpose, various conductive hydrogels are developed based on tragacanth and silk fibroin, with variable dopamine functionalized carboxyl-capped aniline pentamer (CAP@DA). The FTIR analysis confirms that the CAP powder was successfully synthesized and modified with DA. The results show that the incorporation of CAP@DA into hydrogels can increase the porosity and swellability of the hydrogels. Additionally, the mechanical and viscoelastic properties of the hydrogels are also improved. The release of vancomycin from the hydrogels is sustained over time, and the hydrogels are effective in inhibiting the growth of Methicillin-resistant Staphylococcus aureus (MRSA). In vitro cell studies of the hydrogels show that all hydrogels are biocompatible and support cell attachment. The hydrogels' tissue adhesiveness yielded a satisfactory hemostatic outcome in a rat-liver injury model. The third-degree burn was created on the dorsal back paravertebral region of the rats and then grafted with hydrogels. The burn was monitored for 3, 7, and 14 days to evaluate the efficacy of the hydrogel in promoting wound healing. The hydrogels revealed treatment effect, resulting in enhancements in wound closure, dermal collagen matrix production, new blood formation, and anti-inflammatory properties. Better results were obtained for hydrogel with increasing CAP@DA. In summary, the multifunctional conducive hydrogel, featuring potent antibacterial properties, markedly facilitated the wound regeneration process.
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Affiliation(s)
| | - Yasamin Mojarab
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Fatemeh Mottaghitalab
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Saeb
- Department of Pharmaceutical Technology, Medical University of Gdańsk, J. Hallera 107, 80-416 Gdańsk, Poland
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran.
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3
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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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4
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Lee J, Dutta SD, Acharya R, Park H, Kim H, Randhawa A, Patil TV, Ganguly K, Luthfikasari R, Lim KT. Stimuli-Responsive 3D Printable Conductive Hydrogel: A Step toward Regulating Macrophage Polarization and Wound Healing. Adv Healthc Mater 2024; 13:e2302394. [PMID: 37950552 DOI: 10.1002/adhm.202302394] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/27/2023] [Indexed: 11/12/2023]
Abstract
Conductive hydrogels (CHs) are promising alternatives for electrical stimulation of cells and tissues in biomedical engineering. Wound healing and immunomodulation are complex processes that involve multiple cell types and signaling pathways. 3D printable conductive hydrogels have emerged as an innovative approach to promote wound healing and modulate immune responses. CHs can facilitate electrical and mechanical stimuli, which can be beneficial for altering cellular metabolism and enhancing the efficiency of the delivery of therapeutic molecules. This review summarizes the recent advances in 3D printable conductive hydrogels for wound healing and their effect on macrophage polarization. This report also discusses the properties of various conductive materials that can be used to fabricate hydrogels to stimulate immune responses. Furthermore, this review highlights the challenges and limitations of using 3D printable CHs for future material discovery. Overall, 3D printable conductive hydrogels hold excellent potential for accelerating wound healing and immune responses, which can lead to the development of new therapeutic strategies for skin and immune-related diseases.
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Affiliation(s)
- Jieun Lee
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Sayan Deb Dutta
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Rumi Acharya
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hyeonseo Park
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hojin Kim
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Aayushi Randhawa
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Tejal V Patil
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Keya Ganguly
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Rachmi Luthfikasari
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Ki-Taek Lim
- Department of Biosystems Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, Republic of Korea
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
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5
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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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6
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Xiang T, Guo Q, Jia L, Yin T, Huang W, Zhang X, Zhou S. Multifunctional Hydrogels for the Healing of Diabetic Wounds. Adv Healthc Mater 2024; 13:e2301885. [PMID: 37702116 DOI: 10.1002/adhm.202301885] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/10/2023] [Indexed: 09/14/2023]
Abstract
The healing of diabetic wounds is hindered by various factors, including bacterial infection, macrophage dysfunction, excess proinflammatory cytokines, high levels of reactive oxygen species, and sustained hypoxia. These factors collectively impede cellular behaviors and the healing process. Consequently, this review presents intelligent hydrogels equipped with multifunctional capacities, which enable them to dynamically respond to the microenvironment and accelerate wound healing in various ways, including stimuli -responsiveness, injectable self-healing, shape -memory, and conductive and real-time monitoring properties. The relationship between the multiple functions and wound healing is also discussed. Based on the microenvironment of diabetic wounds, antibacterial, anti-inflammatory, immunomodulatory, antioxidant, and pro-angiogenic strategies are combined with multifunctional hydrogels. The application of multifunctional hydrogels in the repair of diabetic wounds is systematically discussed, aiming to provide guidelines for fabricating hydrogels for diabetic wound healing and exploring the role of intelligent hydrogels in the therapeutic processes.
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Affiliation(s)
- Tao Xiang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Qianru Guo
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Lianghao Jia
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Tianyu Yin
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Wei Huang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Xinyu Zhang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Shaobing Zhou
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
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7
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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: 18] [Impact Index Per Article: 9.0] [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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8
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Abedin-Do A, Zhang Z, Douville Y, Méthot M, Bernatchez J, Rouabhia M. Engineering diabetic human skin equivalent for in vitro and in vivo applications. Front Bioeng Biotechnol 2022; 10:989888. [PMID: 36246377 PMCID: PMC9561872 DOI: 10.3389/fbioe.2022.989888] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
The prevalence of diabetes is increasing worldwide. Diabetes contributes to 70% of all non-traumatic lower-limb amputations, which are directly caused by diabetic foot ulcers (DFU) that are difficult to heal. Non-healing diabetic ulcers represent one of modern society’s most difficult medical challenges. One of the promising initiatives to treat DFU is the grafting of autologous skin or stimulating the skin cells at the edge of the wound to proliferate and close the wound. The present study was to engineer a diabetic human skin equivalent (DHSE) that contains fibroblasts and keratinocytes extracted from the skin collected from diabetic patients. The DHSE was used to investigate whether exposure to low-intensity electrical stimulation (ES) could promote diabetic cell activity. The ES was generated by a direct current (DC) electric field of 20 or 40 mV/mm. We demonstrated that the fibroblasts and keratinocytes could be extracted from older diabetics, cultured, and used to engineer DHSE. Interestingly, the exposure of DHSE to ES led to a structural improvement through tissue stratification, increased Ki-67 expression, and the deposition of basement membrane proteins (laminin and type IV collagen). The DHSE exposed to ES showed a high level of keratin 5 and 14 expressions in the basal and supra-basal layers. The keratinocyte proliferation was supported by an increased secretion of the keratinocyte growth factor (FGF-7). Exposure to ES decreased the activity of metalloproteinases (MMP) 2 and 9. In conclusion, we extracted keratinocytes and fibroblasts from the skin of diabetic-old donors. These cells were used to engineer skin equivalents and demonstrate that ES can promote diabetic wound healing. This DHSE can be a promising tool for various in vitro studies to understand the wound healing mechanisms under chronic inflammatory conditions such as diabetes. The DHSE could also be used as an autologous substrate to cover the DFU permanently.
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Affiliation(s)
- Atieh Abedin-Do
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire Université Laval, Quebec, QC, Canada
- Axe Médecine Régénératrice Centre de Recherche du CHU de Québec Département de Chirurgie Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Ze Zhang
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire Université Laval, Quebec, QC, Canada
| | - Yvan Douville
- Axe Médecine Régénératrice Centre de Recherche du CHU de Québec Département de Chirurgie Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Mirelle Méthot
- Axe Médecine Régénératrice Centre de Recherche du CHU de Québec Département de Chirurgie Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Julien Bernatchez
- Axe Médecine Régénératrice Centre de Recherche du CHU de Québec Département de Chirurgie Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire Université Laval, Quebec, QC, Canada
- *Correspondence: Mahmoud Rouabhia,
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9
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Jia Y, Xu J, Shi Q, Zheng L, Liu M, Wang M, Li P, Fan Y. Study on the effects of alternating capacitive electric fields with different frequencies on promoting wound healing. MEDICINE IN NOVEL TECHNOLOGY AND DEVICES 2022. [DOI: 10.1016/j.medntd.2022.100142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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10
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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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11
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Wu F, Gong Y, Song L, Li H, Zhang X, Li H, Zhang S. In vitro and in vivo wound healing-promoting activities of phosvitin-derived peptide Pt5-1c. Eur J Pharmacol 2022; 920:174833. [DOI: 10.1016/j.ejphar.2022.174833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/11/2022] [Accepted: 02/15/2022] [Indexed: 01/05/2023]
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12
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Yoshikawa Y, Hiramatsu T, Sugimoto M, Uemura M, Mori Y, Ichibori R. Efficacy of Low-frequency Monophasic Pulsed Microcurrent Stimulation Therapy in Undermining Pressure Injury: A Double-blind Crossover-controlled Study. Prog Rehabil Med 2022; 7:20220045. [PMID: 36160025 PMCID: PMC9470497 DOI: 10.2490/prm.20220045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 08/09/2022] [Indexed: 11/09/2022] Open
Abstract
Objectives: This double-blind crossover-controlled trial aimed to verify the effect of electrical
stimulation therapy on pressure injuries with undermining. Methods : In this trial, we compared the healing rates between a sham period and a treatment
period using monophasic pulsed microcurrent therapy. The participants were randomly
assigned to the sham or treatment group and received stimulation for 2 weeks. All the
participants, physical therapists, and researchers were blinded to the allocation. For
the main analysis, data on the effect of the intervention on changes in weekly healing
and contraction rates of the wound areas, including undermining, were analyzed based on
a two-period crossover study design. The intervention effect was estimated by examining
the mean treatment difference for each period using Wilcoxon’s signed-rank test. Results : The reduction of the entire wound area, including the undermining area, resulted in
significantly higher healing and contraction rates in the treatment group (overall wound
area reduction rate: contraction rate, P=0.008; period healing rate, P=0.002). Conclusions : Electrical stimulation therapy for pressure injuries, using conditions based on the
findings of an in vivo culture study, was effective in reducing the wound area.
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Affiliation(s)
| | | | - Masaharu Sugimoto
- Department of Physical therapy, Kobe Gakuin University (Retired), Kobe, Japan
| | - Mikiko Uemura
- Department of Health Science, Kansai University of Welfare Sciences, Kashiwara City, Japan
| | - Yuki Mori
- Department of Rehabilitation, Housenka Hospital, Ibaraki City, Japan
| | - Ryoko Ichibori
- Department of Dermatology, Housenka Hospital, Ibaraki City, Japan
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Yu R, Zhang H, Guo B. Conductive Biomaterials as Bioactive Wound Dressing for Wound Healing and Skin Tissue Engineering. NANO-MICRO LETTERS 2021; 14:1. [PMID: 34859323 PMCID: PMC8639891 DOI: 10.1007/s40820-021-00751-y] [Citation(s) in RCA: 239] [Impact Index Per Article: 79.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/29/2021] [Indexed: 05/06/2023]
Abstract
Conductive biomaterials based on conductive polymers, carbon nanomaterials, or conductive inorganic nanomaterials demonstrate great potential in wound healing and skin tissue engineering, owing to the similar conductivity to human skin, good antioxidant and antibacterial activities, electrically controlled drug delivery, and photothermal effect. However, a review highlights the design and application of conductive biomaterials for wound healing and skin tissue engineering is lacking. In this review, the design and fabrication methods of conductive biomaterials with various structural forms including film, nanofiber, membrane, hydrogel, sponge, foam, and acellular dermal matrix for applications in wound healing and skin tissue engineering and the corresponding mechanism in promoting the healing process were summarized. The approaches that conductive biomaterials realize their great value in healing wounds via three main strategies (electrotherapy, wound dressing, and wound assessment) were reviewed. The application of conductive biomaterials as wound dressing when facing different wounds including acute wound and chronic wound (infected wound and diabetic wound) and for wound monitoring is discussed in detail. The challenges and perspectives in designing and developing multifunctional conductive biomaterials are proposed as well.
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Affiliation(s)
- Rui Yu
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Hualei Zhang
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Baolin Guo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.
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Yuan M, Li X, Liu J, Zheng Y, Cheng L, Tang N, Zhang R, Xu S, Fu X, Haick H, Xu Y. Fully Integrated Self-Powered Electrical Stimulation Cell Culture Dish for Noncontact High-Efficiency Plasmid Transfection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54762-54769. [PMID: 34757708 DOI: 10.1021/acsami.1c16748] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Plasmid DNA transfection of mammalian cells is widely used in biomedical research and genetic drug delivery, but low transfection efficiency, especially in the context of the primary cells, limits its application. To improve the efficiency of plasmid transfection, a fully integrated self-powered electrical stimulation cell culture dish (SESD) has been developed to provide self-powered electrical stimulation (ES) of adherent cells, significantly improving the efficiency of plasmid transfection into mammalian cells and cell survival by the standard lipofectamine transfection method. Mechanistically, ES can safely increase the intracellular calcium concentration by opening calcium-ion channels, leading to a higher efficiency of plasmid transfection. Therefore, SESD has the potential to become an effective platform for high-efficiency plasmid DNA transfection in biomedical research and drug delivery.
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Affiliation(s)
- Miaomiao Yuan
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China
| | - Xiaoying Li
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Jingfeng Liu
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
- Department of Rheumatism and Immunology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Youbin Zheng
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Li Cheng
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, China
| | - Ning Tang
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Rongjun Zhang
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Shuxiang Xu
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Xuemei Fu
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China
| | - Hossam Haick
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Yang Xu
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
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Abedin-Do A, Zhang Z, Douville Y, Méthot M, Rouabhia M. Effect of Electrical Stimulation on Diabetic Human Skin Fibroblast Growth and the Secretion of Cytokines and Growth Factors Involved in Wound Healing. BIOLOGY 2021; 10:biology10070641. [PMID: 34356496 PMCID: PMC8301053 DOI: 10.3390/biology10070641] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 06/29/2021] [Accepted: 07/07/2021] [Indexed: 12/12/2022]
Abstract
Simple Summary With the number of diabetic patients on the rise, diabetes has become a major health issue affecting millions of people worldwide. One complication of diabetes is foot ulcers, which are difficult to repair and are thus associated with major clinical problems that may lead to foot amputation and even patient death. The delayed repair of diabetic foot ulcers is due to the slow growth of one of the cell types involved in wound healing, namely, fibroblasts. Fibroblasts inhabit deep skin tissue. Post-wound, they grow and produce skin tissues to enable other cells to close the wound. Even though normal fibroblast growth can be increased by electrical stimulation, it is not clear whether diabetic fibroblast also responds to electrical stimulation. We demonstrated for the first time that a weak direct current electrical field increased diabetic fibroblast growth. The use of electrical stimulation could thus potentially help heal diabetic foot ulcers and ultimately improve patient health and well-being. Abstract Diabetic foot ulcers are indicative of an impaired wound healing process. This delay may be resolved through electrical stimulation (ES). The goal of the present study was to evaluate the effect of ES on diabetic fibroblast adhesion and growth, and the secretion of cytokines and growth factors. Diabetic human skin fibroblasts (DHSF) were exposed to various intensities of direct current ES (100, 80, 40 and 20 mV/mm). The effect of ES on fibroblast adhesion and growth was evaluated using Hoechst staining, MTT and trypan blue exclusion assays. The secretion of cytokine and growth factor was assessed by cytokine array and ELISA assay. The long-term effects of ES on DHSF shape and growth were determined by optical microscopy and cell count. We demonstrated that ES at 20 and 40 mV/mm promoted cell adhesion, viability and growth. ES also decreased the secretion of pro-inflammatory cytokines IL-6 and IL-8 yet promoted growth factor FGF7 secretion during 48 h post-ES. Finally, the beneficial effect of ES on fibroblast growth was maintained up to 5 days post-ES. Overall results suggest the possible use of low-intensity direct current ES to promote wound healing in diabetic patients.
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Affiliation(s)
- Atieh Abedin-Do
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada;
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada; (Z.Z.); (Y.D.); (M.M.)
| | - Ze Zhang
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada; (Z.Z.); (Y.D.); (M.M.)
| | - Yvan Douville
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada; (Z.Z.); (Y.D.); (M.M.)
| | - Mireille Méthot
- Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada; (Z.Z.); (Y.D.); (M.M.)
| | - Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada;
- Correspondence: ; Tel.: +1-418-656-2131 (ext. 416321)
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16
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Fibrinogen, collagen, and transferrin adsorption to poly(3,4-ethylenedioxythiophene)-xylorhamno-uronic glycan composite conducting polymer biomaterials for wound healing applications. Biointerphases 2021; 16:021003. [PMID: 33752337 DOI: 10.1116/6.0000708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We present the conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) doped with an algal-derived glycan extract, Phycotrix™ [xylorhamno-uronic glycan (XRU84)], as an innovative electrically conductive material capable of providing beneficial biological and electrical cues for the promotion of favorable wound healing processes. Increased loading of the algal XRU84 into PEDOT resulted in a reduced surface nanoroughness and interfacial surface area and an increased static water contact angle. PEDOT-XRU84 films demonstrated good electrical stability and charge storage capacity and a reduced impedance relative to the control gold electrode. A quartz crystal microbalance with dissipation monitoring study of protein adsorption (transferrin, fibrinogen, and collagen) showed that collagen adsorption increased significantly with increased XRU84 loading, while transferrin adsorption was significantly reduced. The viscoelastic properties of adsorbed protein, characterized using the ΔD/Δf ratio, showed that for transferrin and fibrinogen, a rigid, dehydrated layer was formed at low XRU84 loadings. Cell studies using human dermal fibroblasts demonstrated excellent cell viability, with fluorescent staining of the cell cytoskeleton illustrating all polymers to present excellent cell adhesion and spreading after 24 h.
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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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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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19
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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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20
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Li H, Ma C, Liu W, He J, Li K. Gypenosides Protect Orbital Fibroblasts in Graves Ophthalmopathy via Anti-Inflammation and Anti-Fibrosis Effects. Invest Ophthalmol Vis Sci 2020; 61:64. [PMID: 32462203 PMCID: PMC7405800 DOI: 10.1167/iovs.61.5.64] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Purpose To investigate the effect of Gypenosides (Gyps) on the inflammation and fibrosis in orbital fibroblasts (OFs) in Graves ophthalmopathy (GO). Methods Bioinformatics analyses were performed to identify the enriched genes and signaling pathways related to Gyps function. For ex vivo experiments, OFs were cultured from orbital connective tissues from patients with GO. OF proliferation was estimated by Cell Counting Kit-8 assay. Effects of Gyps treatment on interleukin (IL)-1β-induced inflammation and transforming growth factor-β1 (TGF-β1)-induced fibrosis were evaluated by real-time quantitative PCR (RT-qPCR), enzyme-linked immunosorbent assay (ELISA), and Western blotting. OFs were treated with IL-1β or TGF-β1 in the absence or presence of Gyps pretreatment, and the levels of related mRNA or proteins were evaluated by RT-qPCR or ELISA. Results Eight inflammation-related target genes and nine fibrosis-related target genes were screened out. These genes were mainly enriched in pathways corresponding to inflammation and fibrosis, respectively. IL-1β-induced upregulation of inflammatory cytokines, and TGF-β-induced upregulation of fibrotic mediators in OFs were downregulated by Gyps. Moreover, Gyps reduced the activation of Toll like receptors 4/nuclear factor-κ B signaling and TGF-β1/SMAD2/SMAD4 signaling in GO OFs. Conclusions Gyps could protect GO-derived OFs against IL-1β-induced inflammation and TGF-β1-induced fibrosis. Thus Gyps might have therapeutic potential on inflammation and fibrosis in GO.
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21
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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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22
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Liu X, George MN, Li L, Gamble D, Miller AL, Gaihre B, Waletzki BE, Lu L. Injectable Electrical Conductive and Phosphate Releasing Gel with Two-Dimensional Black Phosphorus and Carbon Nanotubes for Bone Tissue Engineering. ACS Biomater Sci Eng 2020; 6:4653-4665. [PMID: 33455193 PMCID: PMC9009275 DOI: 10.1021/acsbiomaterials.0c00612] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Injectable hydrogels have unique advantages for the repair of irregular tissue defects. In this study, we report a novel injectable carbon nanotube (CNT) and black phosphorus (BP) gel with enhanced mechanical strength, electrical conductivity, and continuous phosphate ion release for tissue engineering. The gel utilized biodegradable oligo(poly(ethylene glycol) fumarate) (OPF) polymer as the cross-linking matrix, with the addition of cross-linkable CNT-poly(ethylene glycol)-acrylate (CNTpega) to grant mechanical support and electric conductivity. Two-dimensional (2D) black phosphorus nanosheets were also infused to aid in tissue regeneration through the steady release of phosphate that results from environmental oxidation of phosphorus in situ. This newly developed BP-CNTpega-gel was found to enhance the adhesion, proliferation, and osteogenic differentiation of MC3T3 preosteoblast cells. With electric stimulation, the osteogenesis of preosteoblast cells was further enhanced with elevated expression of several key osteogenic pathway genes. As monitored with X-ray imaging, the BP-CNTpega-gel demonstrated excellent in situ gelation and cross-linking to fill femur defects, vertebral body cavities, and posterolateral spinal fusion sites in the rabbit. Together, these results indicate that this newly developed injectable BP-CNTpega-gel owns promising potential for future bone and broad types of tissue engineering applications.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Matthew N. George
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Linli Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Darian Gamble
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E. Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
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Nickel VV, Efremova VP. Proliferative Activity of Cells of Paravasal Connective Tissue at Different Ages. ADVANCES IN GERONTOLOGY 2020. [DOI: 10.1134/s2079057020020125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vijayavenkataraman S, Kannan S, Cao T, Fuh JYH, Sriram G, Lu WF. 3D-Printed PCL/PPy Conductive Scaffolds as Three-Dimensional Porous Nerve Guide Conduits (NGCs) for Peripheral Nerve Injury Repair. Front Bioeng Biotechnol 2019; 7:266. [PMID: 31750293 PMCID: PMC6843025 DOI: 10.3389/fbioe.2019.00266] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 09/27/2019] [Indexed: 01/15/2023] Open
Abstract
Conductivity is a desirable property of an ideal nerve guide conduit (NGC) that is being considered for peripheral nerve regeneration. Most of the conductive polymers reported in use for fabrication of tissue engineering scaffolds such as polypyrrole (PPy), polyaniline, polythiophene, and poly(3,4-ethylenedioxythiophene) are non-biodegradable and possess weak mechanical properties to be fabricated into 3D structures. In this study, a biodegradable and conductive block copolymer of PPy and Polycaprolactone (PPy-b-PCL) was used to fabricate 3D porous NGCs using a novel electrohydrodynamic jet 3D printing process which offers superior control over fiber diameter, pore size, porosity, and fiber alignment. PCL/PPy scaffolds with three different concentrations of PPy-b-PCL (0.5, 1, and 2% v/v) were fabricated as a mesh (pore size 125 ± 15 μm) and the effect of incorporation of PPy-b-PCL on mechanical properties, biodegradability, and conductivity of the NGCs were studied. The mechanical properties of the scaffolds decreased with the addition of PPy-b-PCL which aided the ability to fabricate softer scaffolds that are closer to the properties of the native human peripheral nerve. With increasing concentrations of PPy-b-PCL, the scaffolds displayed a marked increase in conductivity (ranging from 0.28 to 1.15 mS/cm depending on concentration of PPy). Human embryonic stem cell-derived neural crest stem cells (hESC-NCSCs) were used to investigate the impact of PPy-b-PCL based conductive scaffolds on the growth and differentiation to peripheral neuronal cells. The hESC-NCSCs were able to attach and differentiate to peripheral neurons on PCL and PCL/PPy scaffolds, in particular the PCL/PPy (1% v/v) scaffolds supported higher growth of neural cells and a stronger maturation of hESC-NCSCs to peripheral neuronal cells. Overall, these results suggest that PPy-based conductive scaffolds have potential clinical value as cell-free or cell-laden NGCs for peripheral neuronal regeneration.
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Affiliation(s)
- Sanjairaj Vijayavenkataraman
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
- Department of Mechanical Engineering, Tandon School of Engineering, New York University, New York, NY, United States
| | - Sathya Kannan
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Tong Cao
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Jerry Y. H. Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Gopu Sriram
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Wen Feng Lu
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
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25
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Application of conducting polymers to wound care and skin tissue engineering: A review. Biosens Bioelectron 2019; 135:50-63. [DOI: 10.1016/j.bios.2019.04.001] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/22/2019] [Accepted: 04/01/2019] [Indexed: 01/20/2023]
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26
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Geng K, Wang J, Liu P, Tian X, Liu H, Wang X, Hu C, Yan H. Electrical stimulation facilitates the angiogenesis of human umbilical vein endothelial cells through MAPK/ERK signaling pathway by stimulating FGF2 secretion. Am J Physiol Cell Physiol 2019; 317:C277-C286. [PMID: 30995109 DOI: 10.1152/ajpcell.00474.2018] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Electrical stimulation (ES) is able to enhance angiogenesis by stimulating fibroblasts. Fibroblast growth factor 2 (FGF2) is an independent angiogenesis inducer. The present study aimed to evaluate the role of ES-induced FGF2 secretion in affecting angiogenesis during wound healing via the mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) signaling pathway. Fibroblasts and human umbilical vein endothelial cells (HUVECs) were exposed to ES, and the HUVECs were cocultured with ES-treated fibroblast culture solution. ES exposure showed no toxic effects on fibroblasts or HUVECs. ES led to enhanced growth of fibroblasts and HUVECs as well as FGF2 secretion, which is induced through the NOS pathway. ES-induced FGF2 secretion was shown to increase vascular endothelial growth factor (VEGF) protein and enhance migration, invasion, and angiogenesis of HUVECs. Also, ES-induced FGF2 secretion activated the MAPK/ERK signaling pathway. However, inhibition of the MAPK/ERK signaling pathway reversed the positive effects of ES-induced FGF2 secretion. In vitro experiments showed positive effects of ES on wound healing. Taken together, the findings suggested that ES promoted FGF2 secretion and then activated the MAPK/ERK signaling pathway by facilitating angiogenesis and promoting wound healing.
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Affiliation(s)
- Kang Geng
- Department of Burns and Plastic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Jing Wang
- Southwest Petroleum University College of Mechanical and Electrical Engineering, Chengdu, China
| | - Pengfei Liu
- Department of Orthopedics, Aerospace 731 Hospital, Beijing,China
| | - Xinli Tian
- Department of Burns and Plastic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Hongjun Liu
- Department of Burns and Plastic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xue Wang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Chunbing Hu
- Department of Plastic Surgery, Yuehao Medical Beauty Hospital, Chengdu, China
| | - Hong Yan
- Department of Burns and Plastic Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
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Lu Y, Wang Y, Zhang J, Hu X, Yang Z, Guo Y, Wang Y. In-situ doping of a conductive hydrogel with low protein absorption and bacterial adhesion for electrical stimulation of chronic wounds. Acta Biomater 2019; 89:217-226. [PMID: 30862548 DOI: 10.1016/j.actbio.2019.03.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 02/19/2019] [Accepted: 03/07/2019] [Indexed: 12/23/2022]
Abstract
Electrical stimulation (ES) via electrodes is promising for treating chronic wounds, but this electrode-based strategy is unable to stimulate the whole wound area and the therapeutic outcome may be compromised. In this study, a conductive poly(2-hydroxyethyl methacrylate) (polyHEMA)/polypyrrole (PPY) hydrogel was developed, and 3-sulfopropyl methacrylate was covalently incorporated in the hydrogel's network to in-situ dope the PPY and maintain the hydrogel's conductivity in the weak alkaline physiological environment. The obtained hydrogel was superior to the commercial Hydrosorb® dressing for preventing bacterial adhesion and protein absorption, and this is helpful to reduce the possibilities of infection and secondary damage during dressing replacement. The in vitro scratch assay demonstrates that ES through the hydrogel enhanced fibroblast migration, and this enhancement effect remained even after the ES was ended. The in vivo assay using diabetic rats shows that when ES was conducted with this polyHEMA/PPY hydrogel, the healing rate was faster than that achieved by the electrode-based ES strategy. Therefore, this polyHEMA/PPY hydrogel shows a great potential for developing the next generation of ES treatment for chronic wounds. STATEMENT OF SIGNIFICANCE: Electrical stimulation (ES) via separated electrodes is promising for treating chronic wounds, but this electrode-based strategy is unable to stimulate the whole wound area, compromising the therapeutic outcome. Herein, a hydrogel was developed with stable electrical conductivity in the physiological environment and strong resistance to protein absorption and bacterial adhesion. The in vitro and in vivo tests proved that ES applied through the flexible and conductive hydrogel that covered the wound was superior to ES through electrodes for promoting the healing of the chronic wound. This hydrogel-based ES strategy combines the advantages of ES and hydrogel dressing and will pave the way for the next generation of ES treatment for chronic wounds.
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Li Y, Li BS, Liu C, Hong SS, Min J, Hu M, Tang JM, Li ST, Wang TT, Zhou HX, Hong L. Effect of integrin β1 in the treatment of stress urinary incontinence by electrical stimulation. Mol Med Rep 2019; 19:4727-4734. [PMID: 31059065 PMCID: PMC6522829 DOI: 10.3892/mmr.2019.10145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 04/02/2019] [Indexed: 11/24/2022] Open
Abstract
The aim of the present study was to investigate the protective effect of integrin β1 in the treatment of stress urinary incontinence (SUI) by electrical stimulation, and the underlying mechanisms by which electrical stimulation regulates the collagen metabolism of female vaginal wall fibroblasts (FVWFs). FVWFs obtained from the vaginal wall tissue of patients with (Ingelman-Sundberg scale; grade II, n=8; grade III, n=10) or without (n=8) SUI during gynecological operations were isolated by enzymatic digestion and subsequently identified by immunocytochemistry. Following this, cultured FVWFs were treated with an inhibitor of integrin β1, recombinant human integrin β1 and electrical stimulation (100 mv/mm, 2 h, 20 Hz), followed by total mRNA and protein extraction. mRNA and protein expression levels of integrin β1, transforming growth factor (TGF)-β1 and collagen (COL) I and III in FVWFs were quantified by reverse transcription-quantitative PCR (RT-qPCR) and western blot analysis respectively. Integrin β1, TGF-β1 and COL I and III expression levels were decreased in patients with SUI compared with healthy controls, and the grade III group had lower levels than the grade II group. Following electrical stimulation treatment, the expression levels of TGF-β1, COL I and III were enhanced in the grade II group, but not in the grade III group. Nevertheless, the inhibitor of integrin β1 reduced the protective effect of electrical stimulation in the grade II group. In addition, electrical stimulation combined with recombinant human integrin β1 could also protect cells from SUI in the grade III group. The present study provides evidence for the increased degradation of the extracellular matrix and integrin β1 in the vaginal wall tissues of patients with SUI, and the protective effect of electrical stimulation against SUI via integrin β1. These results provide a novel mechanism for the treatment of SUI using electrical stimulation.
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Affiliation(s)
- Yang Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Bing-Shu Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Cheng Liu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Sha-Sha Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jie Min
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Ming Hu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jian-Ming Tang
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Su-Ting Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Ting-Ting Wang
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Hui-Xin Zhou
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Li Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Zaniboni E, Bagne L, Camargo T, do Amaral MEC, Felonato M, de Andrade TAM, Dos Santos GMT, Caetano GF, Esquisatto MAM, Santamaria M, Mendonça FAS. Do electrical current and laser therapies improve bone remodeling during an orthodontic treatment with corticotomy? Clin Oral Investig 2019; 23:4083-4097. [PMID: 30771000 DOI: 10.1007/s00784-019-02845-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 02/07/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Evaluate the bone remodeling during orthodontic movement with corticotomy when submitted to low-intensity electrical stimulation application (microcurrent-MC) and low-level laser therapy (LLLT). MATERIAL AND METHODS One hundred and fifty Wistar rats were divided into the following 5 groups: (C) submitted to tooth movement; (Cort) tooth movement/corticotomy; (Cort-L) tooth movement/corticotomy/laser AsGaAl 808 nm (4.96J/50s); (Cort-Mc) tooth movement/corticotomy/microcurrent (10 μA/5 min); (Cort-L-Mc) tooth movement/corticotomy and laser/microcurrent alternated. Inflammation, angiogenesis, and osteogenesis were evaluated in the periodontal ligament (PDL) and alveolar bone on the 7th, 14th, and 21st days of orthodontic movement. RESULTS The quantification of inflammatory infiltrate, angiogenesis and expression of TGF-β1, VEGF, and collagen type I were favorably modulated by the application of therapies such as low-level laser therapy (LLLT), MC, or both combined. However, electrical stimulation increased fibroblasts, osteoclasts and RANK numbers, birefringent collagen fiber organization, and BMP-7 and IL-6 expression. CONCLUSIONS Low-level laser therapy (LLLT) and MC application both improved the process of bone remodeling during orthodontic treatment with corticotomy. Still, electrical current therapy promoted a more effective tooth displacement but presented expected root resorption similar to all experimental treatments. CLINICAL RELEVANCE It is important to know the effects of minimally invasive therapies on cellular and molecular elements involved in the bone remodeling of orthodontic treatment associated with corticotomy surgery, in order to reduce the adverse effects in the use of this technique and to establish a safer clinical routine.
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Affiliation(s)
- Ewerton Zaniboni
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Leonardo Bagne
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thaís Camargo
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maria Esméria Corezola do Amaral
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maira Felonato
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thiago Antônio Moretti de Andrade
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Gláucia Maria Tech Dos Santos
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Guilherme Ferreira Caetano
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Marcelo Augusto Marreto Esquisatto
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Milton Santamaria
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil. .,Graduate Program of Orthodontics, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil.
| | - Fernanda Aparecida Sampaio Mendonça
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
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Polypyrrole as Electrically Conductive Biomaterials: Synthesis, Biofunctionalization, Potential Applications and Challenges. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:347-370. [DOI: 10.1007/978-981-13-0950-2_18] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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31
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Rouabhia M, Park HJ, Zhang Z. Electrically Activated Primary Human Fibroblasts Improve In Vitro and In Vivo Skin Regeneration. J Cell Physiol 2016; 231:1814-21. [PMID: 26661681 DOI: 10.1002/jcp.25289] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/10/2015] [Indexed: 12/14/2022]
Abstract
Electrical stimulation (ES) changes cellular behaviors and thus constitutes a potential strategy to promote wound healing. However, well-controlled in vitro findings have yet to be translated to in vivo trials. This study was to demonstrate the feasibility and advantages of transplanting electrically activated cells (E-Cells) to help wound healing. Primary human skin fibroblasts were activated through well defined ES and cultured with keratinocytes to generate engineered human skin (EHS), which were transplanted to nu/nu mice. The electrically activated EHS grafts were analyzed at 20 and 30 days post-grafting, showing faster wound closure, thick epidermis, vasculature, and functional basement membrane containing laminin and type IV collagen that were totally produced by the implanted human cells. Because a variety of cells can be electrically activated, E-Cells may become a new cell source and the transplantation of E-Cells may represent a new strategy in wound healing and tissue engineering. J. Cell. Physiol. 231: 1814-1821, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, Canada
| | - Hyun Jin Park
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, Canada.,Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Université Laval, Québec, Canada
| | - Ze Zhang
- Département de Chirurgie, Faculté de Médecine, Axe Médecine Régénératrice, Centre de Recherche du CHU de Québec, Université Laval, Québec, Canada
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