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Zhang H, Zhao Z, Wu C. Bioactive Inorganic Materials for Innervated Multi-Tissue Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2025; 12:e2415344. [PMID: 40013907 PMCID: PMC11967777 DOI: 10.1002/advs.202415344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2024] [Revised: 02/04/2025] [Indexed: 02/28/2025]
Abstract
Tissue engineering aims to repair damaged tissues with physiological functions recovery. Although several therapeutic strategies are there for tissue regeneration, the functional recovery of regenerated tissues still poses significant challenges due to the lack of concerns of tissue innervation. Design rationale of multifunctional biomaterials with both tissue-induction and neural induction activities shows great potential for functional tissue regeneration. Recently, the research and application of inorganic biomaterials attracts increasing attention in innervated multi-tissue regeneration, such as central nerves, bone, and skin, because of its superior tunable chemical composition, topographical structures, and physiochemical properties. More importantly, inorganic biomaterials are easily combined with other organic materials, biological factors, and external stimuli to enhance their therapeutic effects. This review presents a comprehensive overview of recent advancements of inorganic biomaterials for innervated multi-tissue regeneration. It begins with introducing classification and properties of typical inorganic biomaterials and design rationale of inorganic-based material composites. Then, recent progresses of inorganic biomaterials in regenerating various nerves and nerve-innervated tissues with functional recovery are systematically reviewed. Finally, the existing challenges and future perspectives are proposed. This review may pave the way for the direction of inorganic biomaterials and offers a new strategy for tissue regeneration in combination of innervation.
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Affiliation(s)
- Hongjian Zhang
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050P. R. China
| | - Ziyi Zhao
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049P. R. China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing100049P. R. China
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Xing L, Chen B, Qin Y, Li X, Zhou S, Yuan K, Zhao R, Qin D. The role of neuropeptides in cutaneous wound healing: a focus on mechanisms and neuropeptide-derived treatments. Front Bioeng Biotechnol 2024; 12:1494865. [PMID: 39539691 PMCID: PMC11557334 DOI: 10.3389/fbioe.2024.1494865] [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: 09/17/2024] [Accepted: 10/21/2024] [Indexed: 11/16/2024] Open
Abstract
An extensive network of cutaneous nerves, neuropeptides, and specific receptors richly innervates the skin and influences a variety of physiological and pathological processes. The sensory and autonomic nerve fibers secrete a variety of neuropeptides that are essential to the different phases of wound healing. In addition to initiating a neurogenic inflammatory response in the early stages of healing, neuropeptides also control wound healing by influencing immune cells, repair cells, and the growth factor network. However, the precise mechanism by which they accomplish these roles in the context of cutaneous wound healing is still unknown. Investigating the mechanisms of action of neuropeptides in wound healing and potential therapeutic applications is therefore urgently necessary. The present review discusses the process of wound healing, types of neuropeptides, potential mechanisms underlying the role of neuropeptides in cutaneous wound healing, as well as some neuropeptide-derived treatment strategies, such as hydrogels, new dressings, electro stimulation, and skin-derived precursors. Future in-depth mechanistic studies of neuropeptides in cutaneous wound healing may provide opportunities to develop therapeutic technologies that harness the roles of neuropeptides in the wound healing process.
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Affiliation(s)
- Liwei Xing
- First Clinical Medical College, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Bing Chen
- School of Medicine, Kunming University, Kunming, China
| | - Yuliang Qin
- Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Neuropsychiatric Diseases, Yunnan University of Chinese Medicine, Kunming, China
| | - Xinyao Li
- Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Neuropsychiatric Diseases, Yunnan University of Chinese Medicine, Kunming, China
| | - Sitong Zhou
- Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Neuropsychiatric Diseases, Yunnan University of Chinese Medicine, Kunming, China
| | - Kai Yuan
- Second Clinical Medical College, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Rong Zhao
- First Clinical Medical College, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Dongdong Qin
- Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Neuropsychiatric Diseases, Yunnan University of Chinese Medicine, Kunming, China
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Ma Y, He C, Gong Y, Qian L, Lu Q, Li J, Zong LJ, Song J, Yin Z, Shen Y. Effects of low-frequency pulsed electrical stimulation at the common peroneal nerve on chronic refractory wounds of the lower limb: A randomized controlled trial. Health Sci Rep 2024; 7:e70023. [PMID: 39253351 PMCID: PMC11381316 DOI: 10.1002/hsr2.70023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 07/10/2024] [Accepted: 08/13/2024] [Indexed: 09/11/2024] Open
Abstract
Background and aims Electrical stimulation (ES) has been shown to substantially enhance the quality of life by alleviating pain in patients with chronic wounds. This study aimed to observe the effects of low-frequency pulsed wearable ES at the common peroneal nerve on chronic refractory wounds of the lower limb. Methods Forty-eight participants were randomly divided into control group (n = 24) and treatment group (n = 24) in this study. The control group received standard wound care (SWC) exclusively, whereas the treatment group was administered both SWC and the wearable low-frequency ES targeting the common peroneal nerve. Measurements of wound area, pain intensity, wound status, and quality of life scores were systematically recorded both before and after 4 weeks treatment. Results After 4 weeks of intervention, the percentage area reduction was significantly higher in the treatment group compared to the control group (Z = -3.9, p < 0.001), and the healing rate of the treatment group was significantly higher than that of the control group (33% vs. 4%). Moreover, the visual Analog Scale for Pain score (β = -0.65, p = 0.019), the Bates-Jensen Wound Assessment Tool score (p < 0.05), and the questionnaire on quality of life with chronic wounds (Wound-Qol) score (β = -4.23, p = 0.003) were significantly decreased in the patients in the treatment group compared to the control group. Conclusion The wearable low-frequency pulsed ES at the common peroneal nerve for the treatment of chronic refractory wounds showed significant improvement and were far superior compared to SWC. Future research should broaden its scope to include a diverse range of wound types and benefit from collaboration across multiple research centers.
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Affiliation(s)
- Yu Ma
- Rehabilitation Medicine Center The First Affiliated Hospital of Nanjing Medical University Nanjing China
- Department of Rehabilitation Medicine The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Chuan He
- Department of Rehabilitation Medicine The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Youhui Gong
- Department of Rehabilitation Medicine The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Lifang Qian
- Oncology Center The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Qian Lu
- Department of Rehabilitation Medicine The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Jinhua Li
- Oncology Center The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University Suzhou China
| | - Li-Juan Zong
- Department of Rehabilitation Medicine Zhongda Hospital of Southeast University Nanjing China
| | - Jie Song
- Rehabilitation Medicine Center The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Zhifei Yin
- Rehabilitation Medicine Center The First Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Ying Shen
- Rehabilitation Medicine Center The First Affiliated Hospital of Nanjing Medical University Nanjing China
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Feng SW, North TM, Wivell P, Pletcher A, Popratiloff A, Shibata M. Macrophages of multiple hematopoietic origins reside in the developing prostate. Development 2024; 151:dev203070. [PMID: 39082371 PMCID: PMC11385323 DOI: 10.1242/dev.203070] [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: 05/22/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
Tissue-resident macrophages contribute to the organogenesis of many tissues. Growth of the prostate is regulated by androgens during puberty, yet androgens are considered immune suppressive. In this study, we characterized the localization, androgen receptor expression and hematopoietic origin of prostate macrophages, and transiently ablated macrophages during postnatal prostate organogenesis in the mouse. We show that myeloid cells were abundant in the prostate during puberty. However, nuclear androgen receptor expression was not detected in most macrophages. We found Cx3cr1, a marker for macrophages, monocytes and dendritic cells, expressed in interstitial macrophages surrounding the prostate and associated with nerve fibers. Furthermore, we provide evidence for the co-existence of embryonic origin, self-renewing, tissue-resident macrophages and recruited macrophages of bone-marrow monocyte origin in the prostate during puberty. Our findings suggest that prostate macrophages promote neural patterning and may shed further light on our understanding of the role of the innate immune system in prostate pathology in response to inflammation and in cancer.
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Affiliation(s)
- Sally W Feng
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- The George Washington University Cancer Center, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
| | - Tanya M North
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- The George Washington University Cancer Center, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
| | - Peri Wivell
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- The George Washington University Cancer Center, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
| | - Andrew Pletcher
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- The George Washington University Cancer Center, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
| | - Anastas Popratiloff
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- GW Nanofabrication and Imaging Center, The George Washington University, Washington, DC 20052, USA
| | - Maho Shibata
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
- The George Washington University Cancer Center, The George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA
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Bertolini M, Gherardini J, Chéret J, Alam M, Sulk M, Botchkareva NV, Biro T, Funk W, Grieshaber F, Paus R. Mechanical epilation exerts complex biological effects on human hair follicles and perifollicular skin: An ex vivo study approach. Int J Cosmet Sci 2024; 46:175-198. [PMID: 37923568 DOI: 10.1111/ics.12923] [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: 07/06/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE Electrical epilation of unwanted hair is a widely used hair removal method, but it is largely unknown how this affects the biology of human hair follicles (HF) and perifollicular skin. Here, we have begun to explore how mechanical epilation changes selected key biological read-out parameters ex vivo within and around the pilosebaceous unit. METHODS Human full-thickness scalp skin samples were epilated ex vivo using an electro-mechanical device, organ-cultured for up to 6 days in serum-free, supplemented medium, and assessed at different time points by quantitative (immuno-)histomorphometry for selected relevant read-out parameters in epilated and sham-epilated control samples. RESULTS Epilation removed most of the hair shafts, often together with fragments of the outer and inner root sheath and hair matrix. This was associated with persistent focal thinning of the HF basal membrane, decreased melanin content of the residual HF epithelium, and increased HF keratinocyte apoptosis, including in the bulge, yet without affecting the number of cytokeratin 15+ HF epithelial stem cells. Sebocyte apoptosis in the peripheral zone was increased, albeit without visibly altering sebum production. Epilation transiently perturbed HF immune privilege, and increased the expression of ICAM-1 in the bulge and bulb mesenchyme, and the number of perifollicular MHC class II+ cells as well as mast cells around the distal epithelium and promoted mast cell degranulation around the suprabulbar and bulbar area. Moreover, compared to controls, several key players of neurogenic skin inflammation, itch, and/or thermosensation (TRPV1, TRPA1, NGF, and NKR1) were differentially expressed in post-epilation skin. CONCLUSION These data generated in denervated, organ-cultured human scalp skin demonstrate that epilation-induced mechanical HF trauma elicits surprisingly complex biological responses. These may contribute to the delayed re-growth of thinner and lighter hair shafts post-epilation and temporary post-epilation discomfort. Our findings also provide pointers regarding the development of topically applicable agents that minimize undesirable sequelae of epilation.
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Affiliation(s)
- Marta Bertolini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Jennifer Gherardini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Jérémy Chéret
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Majid Alam
- Department of Dermatology and Venereology, Qatar Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Mathias Sulk
- Department of Dermatology, University of Münster, Münster, Germany
| | - Natalia V Botchkareva
- Department of Dermatology, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Tamas Biro
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Wolfgang Funk
- Clinic for Plastic, Aesthetic and Reconstructive Surgery, Dr. Dr. med. Funk, Munich, Germany
| | | | - Ralf Paus
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
- CUTANEON - Skin & Hair Innovations, Hamburg, Germany
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Aslankoohi E, Rolandi M, Isseroff RR, Zhao M, Gomez M. Quantifying innervation facilitated by deep learning in wound healing. Sci Rep 2023; 13:16885. [PMID: 37803028 PMCID: PMC10558471 DOI: 10.1038/s41598-023-42743-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/14/2023] [Indexed: 10/08/2023] Open
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, and are suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and the noise/background associated with the immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, Denoising Convolutional Neural Network (DnCNN), to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8 mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3, 7, 10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly, we found a positive correlation (R2 = 0.926) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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Affiliation(s)
- Abijeet Singh Mehta
- Department of Dermatology, University of California, Davis, CA, 95616, USA.
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA.
| | - Sam Teymoori
- Department of Applied Mathematics, University of California, Santa Cruz, CA, 95064, USA
| | - Cynthia Recendez
- Department of Dermatology, University of California, Davis, CA, 95616, USA
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA
| | - Daniel Fregoso
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Anthony Gallegos
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Hsin-Ya Yang
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Elham Aslankoohi
- Department of Electrical and Computer Engineering, University of California, Santa Cruz, CA, 95064, USA
| | - Marco Rolandi
- Department of Electrical and Computer Engineering, University of California, Santa Cruz, CA, 95064, USA
| | | | - Min Zhao
- Department of Dermatology, University of California, Davis, CA, 95616, USA.
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA.
| | - Marcella Gomez
- Department of Applied Mathematics, University of California, Santa Cruz, CA, 95064, USA.
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Solazzo M, Monaghan MG. A Workflow to Produce a Low-Cost In Vitro Platform for the Electric-Field Pacing of Cellularised 3D Porous Scaffolds. ACS Biomater Sci Eng 2023; 9:4573-4582. [PMID: 37531298 PMCID: PMC10428090 DOI: 10.1021/acsbiomaterials.3c00756] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/20/2023] [Indexed: 08/04/2023]
Abstract
Endogenous electrically mediated signaling is a key feature of most native tissues, the most notable examples being the nervous and the cardiac systems. Biomedical engineering often aims to harness and drive such activity in vitro, in bioreactors to study cell disease and differentiation, and often in three-dimensional (3D) formats with the help of biomaterials, with most of these approaches adopting scaffold-free self-assembling strategies to create 3D tissues. In essence, this is the casting of gels which self-assemble in response to factors such as temperature or pH and have capacity to harbor cells during this process without imparting toxicity. However, the use of materials that do not self-assemble but can support 3D encapsulation of cells (such as porous scaffolds) warrants consideration given the larger repertoire this would provide in terms of material physicochemical properties and microstructure. In this method and protocol paper, we detail and provide design codes and assembly instructions to cheaply create an electrical pacing bioreactor and a Rig for Stimulation of Sponge-like Scaffolds (R3S). This setup has also been engineered to simultaneously perform live optical imaging of the in vitro models. To showcase a pilot exploration of material physiochemistry (in this aspect material conductivity) and microstructure (isotropy versus anisotropy), we adopt isotropic and anisotropic porous scaffolds composed of collagen or poly(3,4-ethylene dioxythiophene):polystyrenesulfonate (PEDOT:PSS) for their contrasting conductivity properties yet similar in porosity and mechanical integrity. Electric field pacing of mouse C3H10 cells on anisotropic porous scaffolds placed in R3S led to increased metabolic activity and enhanced cell alignment. Furthermore, after 7 days electrical pacing drove C3H10 alignment regardless of material conductivity or anisotropy. This platform and its design, which we have shared, have wide suitability for the study of electrical pacing of cellularized scaffolds in 3D in vitro cultures.
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Affiliation(s)
- Matteo Solazzo
- Department
of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, 152−160 Pearse Street, Dublin 2, Ireland
- Trinity
Centre for Biomedical Engineering, 152-160 Pearse Street, Dublin 2, Ireland
| | - Michael G. Monaghan
- Department
of Mechanical, Manufacturing and Biomedical Engineering, Trinity College Dublin, 152−160 Pearse Street, Dublin 2, Ireland
- Advanced
Materials and BioEngineering Research (AMBER) Centre at Trinity College Dublin and the Royal College of Surgeons
in Ireland, Dublin 2, Ireland
- CÚRAM,
Centre for Research in Medical Devices, National University of Ireland, Galway, Newcastle Road, Galway H91 W2TY, Ireland
- Trinity
Centre for Biomedical Engineering, 152-160 Pearse Street, Dublin 2, Ireland
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Kurz P, Danner G, Lembelembe J, Nair HKR, Martin R. Activation of healing and reduction of pain by single-use automated microcurrent electrical stimulation therapy in patients with hard-to-heal wounds. Int Wound J 2023; 20:2053-2061. [PMID: 36601702 PMCID: PMC10333020 DOI: 10.1111/iwj.14071] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 01/06/2023] Open
Abstract
Evidence shows that Electrical Stimulation Therapy (EST) accelerates healing and reduces pain, but EST has yet to become widely used. One reason is the historical use of complex, clinic-based EST devices. This evaluation assessed the early response of different hard-to-heal wounds to a simple, wearable, single-use, automated microcurrent EST device (Accel-Heal, Accel-Heal Technologies Limited - Hever, UK). Forty wounds (39 patients: 18 female - 21 male), mean age 68.9 ± 14.0 years comprised of: seven post-surgical, three trauma, 12 diabetic foot (DFU), 10 venous (VLU), four pressure injuries (PI), four mixed venous or arterial ulcers (VLU/arterial) received automated microcurrent EST for 12 days. Early clinical responses were scored on a 0-5 scale (5-excellent-0-no response). Pain was assessed at 48 h, seven days, and 14 days on a 0-10 visual analogue scale (VAS). Overall, 78% of wounds showed a marked positive clinical response (scores of 5 and 4). Sixty eight percent of wounds were painful with a mean VAS score of 5.5. Almost every patient (96%) with pain experienced reduction within 48 h. All patients with painful wounds experienced pain reduction after seven days: 2.50 VAS (45% reduction) and further pain reduction after 14 days: 1.83 VAS (33%).
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Affiliation(s)
- Peter Kurz
- WPM Wund Pflege Management GmbHBad PirawarthAustria
| | | | - Jean‐Paul Lembelembe
- Department, Geriatrics & Wound Day HospitalClinique des AugustinesMalestroitFrance
| | | | - Robin Martin
- Robin Martin PhD Scientific ConsultingFoggathorpeUK
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Isseroff R, Zhao M, Gomez M, Aslankoohi E, Rolandi M. Quantifying innervation facilitated by deep learning in wound healing. RESEARCH SQUARE 2023:rs.3.rs-3088471. [PMID: 37461461 PMCID: PMC10350234 DOI: 10.21203/rs.3.rs-3088471/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, which have been suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and noise/background associated with the Immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, DnCNN, to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3,7,10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly we found a positive correlation (R 2 = 0.933) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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10
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Isseroff RR, Zhao M, Gomez M. Quantifying innervation facilitated by deep learning in wound healing. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.14.544960. [PMID: 37398108 PMCID: PMC10312705 DOI: 10.1101/2023.06.14.544960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, which have been suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and noise/background associated with the Immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, DnCNN, to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3,7,10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly we found a positive correlation (R- 2 = 0.933) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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11
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Zhang H, Ma W, Ma H, Qin C, Chen J, Wu C. Spindle-Like Zinc Silicate Nanoparticles Accelerating Innervated and Vascularized Skin Burn Wound Healing. Adv Healthc Mater 2022; 11:e2102359. [PMID: 35104395 DOI: 10.1002/adhm.202102359] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/19/2021] [Indexed: 12/13/2022]
Abstract
The treatment of severe burn injuries is a crucial challenge in skin tissue engineering. Severe burns are always accompanied with large-area neurovascular networks damage, leading to the lack of excitation functions and difficulty in self-healing. Therefore, it is of great importance to develop biomaterials which can not only promote wound healing but also simultaneously reconstruct cutaneous neurovascular networks. In this study, Zn2 SiO4 (ZS) nanoparticles-incorporated bioactive nanofibrous scaffolds are designed for innervated and vascularized skin burn wound healing. ZS nanoparticles with spindle-like morphology are synthesized via a facile hydrothermal method. The incorporation of ZS nanoparticles endows the scaffolds with excellent angiogenic and neurogenic activities in vitro. Additionally, in vivo results show that the ZS nanoparticles-incorporated scaffolds have favorable re-epithelialization, innervation, and vascularization abilities through local release of bioactive Zn and Si ions from ZS nanoparticles, leading to rapid wound healing featuring with newly formed blood vessels and nerve fibers. Taken together, this study suggests that the spindle-like ZS nanoparticles are useful bioactive agents for stimulating vascularization and innervation of functional skin repair. The bioactive inorganic nanoparticles may be used for multifunctional tissue regeneration.
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Affiliation(s)
- Hongjian Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wenping Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Hongshi Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Chen Qin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jiajie Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
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12
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Lee SM, Lee JE, Lee YK, Yoo DA, Seon DB, Lee DW, Kim CB, Choi H, Lee KH. Thermal-Corrosion-Free Electrode-Integrated Cell Chip for Promotion of Electrically Stimulated Neurite Outgrowth. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00049-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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13
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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: 31] [Impact Index Per Article: 7.8] [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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14
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Gilhar A, Reich K, Keren A, Kabashima K, Steinhoff M, Paus R. Mouse models of atopic dermatitis: a critical reappraisal. Exp Dermatol 2021; 30:319-336. [PMID: 33368555 DOI: 10.1111/exd.14270] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 12/13/2022]
Abstract
Mouse models for atopic dermatitis (AD) are an indispensable preclinical research tool for testing new candidate AD therapeutics and for interrogating AD pathobiology in vivo. In this Viewpoint, we delineate why, unfortunately, none of the currently available so-called "AD" mouse models satisfactorily reflect the clinical complexity of human AD, but imitate more "allergic" or "irriant" contact dermatitis conditions. This limits the predictive value of AD models for clinical outcomes of new tested candidate AD therapeutics and the instructiveness of mouse models for human AD pathophysiology research. Here, we propose to initiate a rational debate on the minimal criteria that a mouse model should meet in order to be considered relevant for human AD. We suggest that valid AD models should at least meet the following criteria: (a) an AD-like epidermal barrier defect with reduced filaggrin expression along with hyperproliferation, hyperplasia; (b) increased epidermal expression of thymic stromal lymphopoietin (TSLP), periostin and/or chemokines such as TARC (CCL17); (c) a characteristic dermal immune cell infiltrate with overexpression of some key cytokines such as IL-4, IL-13, IL-31 and IL-33; (d) distinctive "neurodermatitis" features (sensory skin hyperinnervation, defective beta-adrenergic signalling, neurogenic skin inflammation and triggering or aggravation of AD-like skin lesions by perceived stress); and (e) response of experimentally induced skin lesions to standard AD therapy. Finally, we delineate why humanized AD mouse models (human skin xenotransplants on SCID mice) offer a particularly promising preclinical research alternative to the currently available "AD" mouse models.
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Affiliation(s)
- Amos Gilhar
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel.,Rambam Health Care Campus, Haifa, Israel
| | - Kristian Reich
- Centre for Translational Research in Inflammatory Skin Diseases, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Skinflammation Center, Hamburg, Germany
| | - Aviad Keren
- Skin Research Laboratory, Rappaport Faculty of Medicine, Technion -Israel Institute of Technology, Haifa, Israel
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore, Singapore
| | - Martin Steinhoff
- Department of Dermatology and Venereology, Hamad Medical Corporation, Qatar University, Doha, Qatar.,School of Medicine, Weill Cornell University-Qatar and Qatar University, Doha, Qatar
| | - Ralf Paus
- Dr. Phillip Frost, Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Dermatology Research Centre, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester, UK.,Monasterium Laboratory, Münster, Germany
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15
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Xu X, Zhang H, Yan Y, Wang J, Guo L. Effects of electrical stimulation on skin surface. ACTA MECHANICA SINICA = LI XUE XUE BAO 2021; 37:1843-1871. [PMID: 33584001 PMCID: PMC7866966 DOI: 10.1007/s10409-020-01026-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/16/2020] [Accepted: 10/02/2020] [Indexed: 05/10/2023]
Abstract
ABSTRACT Skin is the largest organ in the body, and directly contact with the external environment. Articles on the role of micro-current and skin have emerged in recent years. The function of micro-current is various, including introducing various drugs into the skin locally or throughout the body, stimulating skin wounds healing through various currents, suppressing pain caused by various diseases, and promoting blood circulation for postoperative muscle rehabilitation, etc. This article reviews these efforts. Compared with various physical and chemical medical therapies, micro-current stimulation provides a relatively safe, non-invasive therapy with few side effects, giving modern medicine a more suitable treatment option. At the same time, the cost of the electrical stimulation generating device is relatively low, which makes it have wider space to and more clinical application value. The current micro-current stimulation technology has become more and more mature, but there are still many problems in its research. The design of the experiment and the selection of the current parameters not standardized and rigorous. Now, clear regulations are needed to regulate this field. Micro-current skin therapy has become a robust, reliable, and well-structured system.
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Affiliation(s)
- Xinkai Xu
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190 China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Han Zhang
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049 China
- Key Laboratory of Noise and Vibration, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190 China
- State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190 China
| | - Yan Yan
- Cosmetic Technology Center, Chinese Academy of Inspection and Quarantine, Beijing, 100176 China
| | - Jianru Wang
- Xi’an Aerospace Propulsion Institute, Xi’an, 710100 China
| | - Liang Guo
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190 China
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16
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Talagas M, Lebonvallet N, Leschiera R, Sinquin G, Elies P, Haftek M, Pennec JP, Ressnikoff D, La Padula V, Le Garrec R, L'herondelle K, Mignen O, Le Pottier L, Kerfant N, Reux A, Marcorelles P, Misery L. Keratinocytes Communicate with Sensory Neurons via Synaptic-like Contacts. Ann Neurol 2020; 88:1205-1219. [PMID: 32951274 DOI: 10.1002/ana.25912] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Pain, temperature, and itch are conventionally thought to be exclusively transduced by the intraepidermal nerve endings. Although recent studies have shown that epidermal keratinocytes also participate in sensory transduction, the mechanism underlying keratinocyte communication with intraepidermal nerve endings remains poorly understood. We sought to demonstrate the synaptic character of the contacts between keratinocytes and sensory neurons and their involvement in sensory communication between keratinocytes and sensory neurons. METHODS Contacts were explored by morphological, molecular, and functional approaches in cocultures of epidermal keratinocytes and sensory neurons. To interrogate whether structures observed in vitro were also present in the human epidermis, in situ correlative light electron microscopy was performed on human skin biopsies. RESULTS Epidermal keratinocytes dialogue with sensory neurons through en passant synaptic-like contacts. These contacts have the ultrastructural features and molecular hallmarks of chemical synaptic-like contacts: narrow intercellular cleft, keratinocyte synaptic vesicles expressing synaptophysin and synaptotagmin 1, and sensory information transmitted from keratinocytes to sensory neurons through SNARE-mediated (syntaxin1) vesicle release. INTERPRETATION By providing selective communication between keratinocytes and sensory neurons, synaptic-like contacts are the hubs of a 2-site receptor. The permanent epidermal turnover, implying a specific en passant structure and high plasticity, may have delayed their identification, thereby contributing to the long-held concept of nerve endings passing freely between keratinocytes. The discovery of keratinocyte-sensory neuron synaptic-like contacts may call for a reassessment of basic assumptions in cutaneous sensory perception and sheds new light on the pathophysiology of pain and itch as well as the physiology of touch. ANN NEUROL 2020;88:1205-1219.
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Affiliation(s)
- Matthieu Talagas
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Department of Pathology, Brest University Hospital, Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Nicolas Lebonvallet
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Raphael Leschiera
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Gerard Sinquin
- Univ Brest, Imagery and Microscopic Measures Facility, Brest University, F-29200 Brest, France
| | - Philippe Elies
- Univ Brest, Imagery and Microscopic Measures Facility, Brest University, F-29200 Brest, France
| | - Marek Haftek
- Laboratory of Tissue Biology and Therapeutic Engineering, University of Lyon 1, UMR 5305 CNRS-UCBL1, Lyon, France
| | - Jean-Pierre Pennec
- Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France.,Univ Brest, Movement Sport and Health (EA1274), Brest University, F-29200 Brest, France
| | - Denis Ressnikoff
- East Lyon Center of Quantitative Imagery, University of Lyon 1, INSERM US 7-CNRS UMS 3453, Lyon, France
| | - Veronica La Padula
- Technological Center of Microstructures, University of Lyon 1, Lyon, France
| | - Raphaele Le Garrec
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Killian L'herondelle
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Olivier Mignen
- Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France.,Univ Brest, INSERM, UMR 1227, Brest University, F-29200 Brest, France
| | - Laetitia Le Pottier
- Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France.,Univ Brest, INSERM, UMR 1227, Brest University, F-29200 Brest, France
| | - Nathalie Kerfant
- Department of Plastic, Reconstructive, and Esthetic Surgery, Brest University Hospital, Brest, France
| | - Alexia Reux
- Univ Brest, LIEN, Brest University, F-29200 Brest, France
| | - Pascale Marcorelles
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Department of Pathology, Brest University Hospital, Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France
| | - Laurent Misery
- Univ Brest, LIEN, Brest University, F-29200 Brest, France.,Univ Brest, Brest Institute of Health Agro Matter, Brest University, F-29200 Brest, France.,Department of Dermatology, Brest University Hospital, Brest, France
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17
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Kervarrec T, Samimi M, Guyétant S, Sarma B, Chéret J, Blanchard E, Berthon P, Schrama D, Houben R, Touzé A. Histogenesis of Merkel Cell Carcinoma: A Comprehensive Review. Front Oncol 2019; 9:451. [PMID: 31245285 PMCID: PMC6579919 DOI: 10.3389/fonc.2019.00451] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 05/13/2019] [Indexed: 12/11/2022] Open
Abstract
Merkel cell carcinoma (MCC) is a primary neuroendocrine carcinoma of the skin. This neoplasia features aggressive behavior, resulting in a 5-year overall survival rate of 40%. In 2008, Feng et al. identified Merkel cell polyomavirus (MCPyV) integration into the host genome as the main event leading to MCC oncogenesis. However, despite identification of this crucial viral oncogenic trigger, the nature of the cell in which MCC oncogenesis occurs is actually unknown. In fact, several hypotheses have been proposed. Despite the large similarity in phenotype features between MCC tumor cells and physiological Merkel cells (MCs), a specialized subpopulation of the epidermis acting as mechanoreceptor of the skin, several points argue against the hypothesis that MCC derives directly from MCs. Alternatively, MCPyV integration could occur in another cell type and induce acquisition of an MC-like phenotype. Accordingly, an epithelial as well as a fibroblastic or B-cell origin of MCC has been proposed mainly based on phenotype similarities shared by MCC and these potential ancestries. The aim of this present review is to provide a comprehensive review of the current knowledge of the histogenesis of MCC.
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Affiliation(s)
- Thibault Kervarrec
- Department of Pathology, Centre Hospitalier Universitaire de Tours, Tours, France.,ISP "Biologie des infections à polyomavirus" team, UMR INRA 1282, University of Tours, Tours, France.,Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Mahtab Samimi
- ISP "Biologie des infections à polyomavirus" team, UMR INRA 1282, University of Tours, Tours, France.,Departement of Dermatology, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Serge Guyétant
- Department of Pathology, Centre Hospitalier Universitaire de Tours, Tours, France.,ISP "Biologie des infections à polyomavirus" team, UMR INRA 1282, University of Tours, Tours, France
| | - Bhavishya Sarma
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Jérémy Chéret
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Emmanuelle Blanchard
- Department of Pathology, Centre Hospitalier Universitaire de Tours, Tours, France.,Plateforme IBiSA de Microscopie Electronique, INSERM 1259, Université de Tours, Tours, France
| | - Patricia Berthon
- ISP "Biologie des infections à polyomavirus" team, UMR INRA 1282, University of Tours, Tours, France
| | - David Schrama
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Roland Houben
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Antoine Touzé
- ISP "Biologie des infections à polyomavirus" team, UMR INRA 1282, University of Tours, Tours, France
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18
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Fabrication of a Co-Culture System with Human Sweat Gland-Derived Cells and Peripheral Nerve Cells. Methods Mol Biol 2019; 1993:139-148. [PMID: 31148084 DOI: 10.1007/978-1-4939-9473-1_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The interaction of peripheral nerves with different cells of the skin is a relevant aspect of many physiological processes including nociception, temperature control, and wound healing. Here we describe a protocol for the setup of an indirect co-culture system of peripheral nerve cells and sweat gland-derived stem cells, which can be used to quantify neurite outgrowth.
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19
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UCHL1/PGP 9.5 Dynamic in Neuro-Immune-Cutaneous Milieu: Focusing on Axonal Nerve Terminals and Epidermal Keratinocytes in Psoriatic Itch. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7489316. [PMID: 30148172 PMCID: PMC6083486 DOI: 10.1155/2018/7489316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/28/2018] [Accepted: 06/07/2018] [Indexed: 01/03/2023]
Abstract
Psoriasis is an immunogenetic skin disease manifesting as plaque lesions on the skin. Patients with psoriasis frequently suffer from itch, an unpleasant sensation causing a desire to scratch. Psoriatic itch is mainly transmitted by unmyelinated C-fibers; however, the exact molecular mechanism of psoriatic itch is still unexplained. Protein gene product 9.5 (PGP 9.5) is a panneurological marker commonly used for analysis of peripheral peptidergic and nonpeptidergic nerves and identification of cutaneous neuro-immune-endocrine cells. However, some studies suggested that nonneuronal cells, like keratinocytes, may also express PGP 9.5. This phenomenon might be linked with impaired axonal transport, keratinocyte injury, or dysfunctions of neuro-immune-cutaneous connections. The aim of this study was to analyze the expression of PGP 9.5 in psoriatic skin. We observed significantly altered density of PGP 9.5-positive axonal nerve terminals in pruritic lesional (p=0.04) and nonlesional psoriatic skin (p>0.001) compared with controls. In contrast, no significant differences were observed between psoriatic skin without itch and controls. Furthermore, PGP 9.5 expression by suprabasal keratinocytes (SBKs) was significantly increased in itchy skin lesions (p=0.007) compared to skin without itch, and a positive correlation was observed between PGP 9.5 expression and itch intensity (r=0.64; p=0.02). Our findings indicate changes in peripheral innervations and psoriatic keratinocytes, which may influence neuro-immune-cutaneous homeostasis and modulate itch transmission.
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20
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Lebonvallet N, Laverdet B, Misery L, Desmoulière A, Girard D. New insights into the roles of myofibroblasts and innervation during skin healing and innovative therapies to improve scar innervation. Exp Dermatol 2018; 27:950-958. [DOI: 10.1111/exd.13681] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Nicolas Lebonvallet
- Department of Dermatology and EA4685 “Laboratory Interactions Neurons-Keratinocytes”; Faculty of Medicine and Health Sciences; University of Western Brittany; Brest France
| | - Betty Laverdet
- Department of Physiology and EA6309 “Myelin Maintenance and Peripheral Neuropathies”; Faculty of Pharmacy; University of Limoges; Limoges France
| | - Laurent Misery
- Department of Dermatology and EA4685 “Laboratory Interactions Neurons-Keratinocytes”; Faculty of Medicine and Health Sciences; University of Western Brittany; Brest France
| | - Alexis Desmoulière
- Department of Physiology and EA6309 “Myelin Maintenance and Peripheral Neuropathies”; Faculty of Pharmacy; University of Limoges; Limoges France
| | - Dorothée Girard
- Department of Physiology and EA6309 “Myelin Maintenance and Peripheral Neuropathies”; Faculty of Pharmacy; University of Limoges; Limoges France
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21
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Slominski AT, Zmijewski MA, Plonka PM, Szaflarski JP, Paus R. How UV Light Touches the Brain and Endocrine System Through Skin, and Why. Endocrinology 2018; 159:1992-2007. [PMID: 29546369 PMCID: PMC5905393 DOI: 10.1210/en.2017-03230] [Citation(s) in RCA: 321] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/16/2018] [Indexed: 12/15/2022]
Abstract
The skin, a self-regulating protective barrier organ, is empowered with sensory and computing capabilities to counteract the environmental stressors to maintain and restore disrupted cutaneous homeostasis. These complex functions are coordinated by a cutaneous neuro-endocrine system that also communicates in a bidirectional fashion with the central nervous, endocrine, and immune systems, all acting in concert to control body homeostasis. Although UV energy has played an important role in the origin and evolution of life, UV absorption by the skin not only triggers mechanisms that defend skin integrity and regulate global homeostasis but also induces skin pathology (e.g., cancer, aging, autoimmune responses). These effects are secondary to the transduction of UV electromagnetic energy into chemical, hormonal, and neural signals, defined by the nature of the chromophores and tissue compartments receiving specific UV wavelength. UV radiation can upregulate local neuroendocrine axes, with UVB being markedly more efficient than UVA. The locally induced cytokines, corticotropin-releasing hormone, urocortins, proopiomelanocortin-peptides, enkephalins, or others can be released into circulation to exert systemic effects, including activation of the central hypothalamic-pituitary-adrenal axis, opioidogenic effects, and immunosuppression, independent of vitamin D synthesis. Similar effects are seen after exposure of the eyes and skin to UV, through which UVB activates hypothalamic paraventricular and arcuate nuclei and exerts very rapid stimulatory effects on the brain. Thus, UV touches the brain and central neuroendocrine system to reset body homeostasis. This invites multiple therapeutic applications of UV radiation, for example, in the management of autoimmune and mood disorders, addiction, and obesity.
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Affiliation(s)
- Andrzej T Slominski
- Department of Dermatology, Comprehensive Cancer Center Cancer Chemoprevention Program, University of Alabama at Birmingham, Birmingham, Alabama
- VA Medical Center, Birmingham, Alabama
- Correspondence: Andrzej T. Slominski, MD, PhD, Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama 35294. E-mail:
| | | | - Przemyslaw M Plonka
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Jerzy P Szaflarski
- Departments of Neurology and Neurobiology and the UAB Epilepsy Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ralf Paus
- Centre for Dermatology Research, University of Manchester, Manchester, United Kingdom
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida
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22
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Tandon B, Magaz A, Balint R, Blaker JJ, Cartmell SH. Electroactive biomaterials: Vehicles for controlled delivery of therapeutic agents for drug delivery and tissue regeneration. Adv Drug Deliv Rev 2018; 129:148-168. [PMID: 29262296 DOI: 10.1016/j.addr.2017.12.012] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/24/2017] [Accepted: 12/16/2017] [Indexed: 01/09/2023]
Abstract
Electrical stimulation for delivery of biochemical agents such as genes, proteins and RNA molecules amongst others, holds great potential for controlled therapeutic delivery and in promoting tissue regeneration. Electroactive biomaterials have the capability of delivering these agents in a localized, controlled, responsive and efficient manner. These systems have also been combined for the delivery of both physical and biochemical cues and can be programmed to achieve enhanced effects on healing by establishing control over the microenvironment. This review focuses on current state-of-the-art research in electroactive-based materials towards the delivery of drugs and other therapeutic signalling agents for wound care treatment. Future directions and current challenges for developing effective electroactive approach based therapies for wound care are discussed.
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23
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Emmerson E. Efficient Healing Takes Some Nerve: Electrical Stimulation Enhances Innervation in Cutaneous Human Wounds. J Invest Dermatol 2017; 137:543-545. [DOI: 10.1016/j.jid.2016.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 10/14/2016] [Indexed: 10/20/2022]
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