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Godoi S, Sant'Ana E, Renno ACM, Martignago CCS, Tim CR, Assis L. Evaluation of the photothermal effects of the subdermal high-power laser in the skin of an experimental rat model. Lasers Med Sci 2024; 39:230. [PMID: 39222167 DOI: 10.1007/s10103-024-04182-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024]
Abstract
The aim of the present study was to evaluate the photothermal effects of a subdermal high-power diode laser at a wavelength (λ) of 1470 nm in the skin of rats. Twenty male Wistar rats were used, divided into 2 groups: placebo laser (PL) and active laser (AL). A high-power diode laser equipment was applied to 5 subdermal vectors on the animal's back region. The results demonstrated that active laser animals showed a better arrangement of collagen fiber bands, an increase in the thickness of the dermis and the number of vessels. Furthermore, animals treated with active laser showed an increased immunoexpression of TGF-β and VEGF compared to the placebo. The present work demonstrated that the subdermal high-power diode laser increases the vascularization and the expression of factors that enhance skin regeneration and may be promising resource in the esthetic and dermatology clinical treatment of skin rejuvenation.
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Affiliation(s)
- Silvana Godoi
- Programa de Pós-graduação em Engenharia Biomédica, Universidade Brasil Itaquera, São Paulo, SP, 08230-030, Brazil
| | | | | | | | - Carla Roberta Tim
- Programa de Pós-graduação em Engenharia Biomédica, Universidade Brasil Itaquera, São Paulo, SP, 08230-030, Brazil
| | - Lívia Assis
- Programa de Pós-graduação em Engenharia Biomédica, Universidade Brasil Itaquera, São Paulo, SP, 08230-030, Brazil.
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de A Cruz M, Sousa KSJ, Avanzi IR, de Souza A, Martignago CCS, Delpupo FVB, Simões MC, Parisi JR, Assis L, De Oliveira F, Granito RN, Laakso EL, Renno A. In Vivo Effects of Biosilica and Spongin-Like Collagen Scaffolds on the Healing Process in Osteoporotic Rats. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2024:10.1007/s10126-024-10356-2. [PMID: 39153015 DOI: 10.1007/s10126-024-10356-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
Due to bioactive properties, introducing spongin-like collagen (SPG) into the biosilica (BS) extracted from marine sponges would present an enhanced biological material for improving osteoporotic fracture healing by increasing bone formation rate. Our aim was to characterize the morphology of the BS/SPG scaffolds by scanning electron microscopy (SEM), the chemical bonds of the material by Fourier transform infrared spectroscopy (FTIR), and evaluating the orthotopic in vivo response of BS/SPG scaffolds in tibial defects of osteoporotic fractures in rats (histology, histomorphometry, and immunohistochemistry) in two experimental periods (15 and 30 days). SEM showed that scaffolds were porous, showing the spicules of BS and fibrous aspect of SPG. FTIR showed characteristic peaks of BS and SPG. For the in vivo studies, after 30 days, BS and BS/SPG showed a higher amount of newly formed bone compared to the first experimental period, observed both in the periphery and in the central region of the bone defect. For histomorphometry, BS/SPG presented higher %BV/TV compared to the other experimental groups. After 15 days, BS presented higher volumes of collagen type I. After 30 days, all groups demonstrated higher volumes of collagen type III compared to volumes at 15 days. After 30 days, BS/SPG presented higher immunostaining of osteoprotegerin compared to the other experimental groups at the same experimental period. The results showed that BS and BS/SPG scaffolds were able to improve bone healing. Future research should focus on the effects of BS/SPG on longer periods in vivo studies.
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Affiliation(s)
- Matheus de A Cruz
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Karolyne S J Sousa
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Ingrid R Avanzi
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil.
| | - Amanda de Souza
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Cintia C S Martignago
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Fernanda V B Delpupo
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Mariana C Simões
- Department of Physiotherapy, Metropolitan University of Santos - UNIMES, Santos, São Paulo, Brazil
| | - Julia R Parisi
- Department of Physiotherapy, Metropolitan University of Santos - UNIMES, Santos, São Paulo, Brazil
| | - Livia Assis
- Post-Graduate Program in Biomedical Engineering, Brasil University, São Paulo, São Paulo, Brazil
| | - Flávia De Oliveira
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Renata N Granito
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
| | - Eeva-Liisa Laakso
- Mater Research Institute, University of Queensland, South Brisbane, QLD, Australia
| | - Ana Renno
- Department of Biosciences, Federal University of São Paulo - UNIFESP, Santos, São Paulo, Brazil
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Jia S, Wang X, Wang G, Wang X. Mechanism and application of β-adrenoceptor blockers in soft tissue wound healing. Med Res Rev 2024; 44:422-452. [PMID: 37470332 DOI: 10.1002/med.21984] [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: 07/03/2022] [Revised: 06/01/2023] [Accepted: 07/06/2023] [Indexed: 07/21/2023]
Abstract
Soft tissue damage stimulates sympathetic nerves to release large amounts of catecholamine hormones which bind to β-adrenergic receptors (β-ARs) on the cell membrane surface. It activates the downstream effector molecules and impairs soft tissue wound healing. β-blockers specifically inhibit β-ARs activation in acute/chronic skin lesions and ulcerative hemangiomas. They also accelerate soft tissue wound healing by shortening the duration of inflammation, speeding keratinocyte migration and reepithelialization, promoting wound contraction and angiogenesis, and inhibiting bacterial virulence effects. In addition, β-blockers shorten wound healing periods in patients with severe thermal damage by reducing the hypermetabolic response. While β-blockers promote/inhibit corneal epithelial cell regeneration and restores limbal stem/progenitor cells function, it could well accelerate/delay corneal wound healing. Given these meaningful effects, a growing number of studies are focused on examining the efficacy and safety of β-blockers in soft tissue wound repair, including acute and chronic wounds, severe thermal damage, ulcerated infantile hemangioma, corneal wounds, and other soft tissue disorders. However, an intensive investigation on their acting mechanisms is imperatively needed. The purpose of this article is to summerize the roles of β-blockers in soft tissue wound healing and explore their clinical applications.
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Affiliation(s)
- Shasha Jia
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
- School of Stomatology, Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Xueya Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
- School of Stomatology, Qingdao University, Qingdao, Shandong, People's Republic of China
| | - Guowei Wang
- Department of Stomatology, No. 971 Hospital of the Chinese Navy, Qingdao, Shandong, People's Republic of China
| | - Xiaojing Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, People's Republic of China
- School of Stomatology, Qingdao University, Qingdao, Shandong, People's Republic of China
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Su J, Wei Q, Ma K, Wang Y, Hu W, Meng H, Li Q, Zhang Y, Zhang W, Li H, Fu X, Zhang C. P-MSC-derived extracellular vesicles facilitate diabetic wound healing via miR-145-5p/ CDKN1A-mediated functional improvements of high glucose-induced senescent fibroblasts. BURNS & TRAUMA 2023; 11:tkad010. [PMID: 37860579 PMCID: PMC10583213 DOI: 10.1093/burnst/tkad010] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 01/01/2023] [Accepted: 02/14/2023] [Indexed: 10/21/2023]
Abstract
Background Persistent hyperglycaemia in diabetes causes functional abnormalities of human dermal fibroblasts (HDFs), partially leading to delayed skin wound healing. Extracellular vesicles (EVs) containing multiple pro-healing microRNAs (miRNAs) have been shown to exert therapeutic effects on diabetic wound healing. The present study aimed to observe the effects of EVs derived from placental mesenchymal stem cells (P-MSC-EVs) on diabetic wound healing and high glucose (HG)-induced senescent fibroblasts and to explore the underlying mechanisms. Methods P-MSC-EVs were isolated by differential ultracentrifugation and locally injected into the full-thickness skin wounds of diabetic mice, to observe the beneficial effects on wound healing in vivo by measuring wound closure rates and histological analysis. Next, a series of assays were conducted to evaluate the effects of low (2.28 x 1010 particles/ml) and high (4.56 x 1010 particles/ml) concentrations of P-MSC-EVs on the senescence, proliferation, migration, and apoptosis of HG-induced senescent HDFs in vitro. Then, miRNA microarrays and real-time quantitative PCR (RT-qPCR) were carried out to detect the differentially expressed miRNAs in HDFs after EVs treatment. Specific RNA inhibitors, miRNA mimics, and small interfering RNA (siRNA) were used to evaluate the role of a candidate miRNA and its target genes in P-MSC-EV-induced improvements in the function of HG-induced senescent HDFs. Results Local injection of P-MSC-EVs into diabetic wounds accelerated wound closure and reduced scar widths, with better-organized collagen deposition and decreased p16INK4a expression. In vitro, P-MSC-EVs enhanced the antisenescence, proliferation, migration, and antiapoptotic abilities of HG-induced senescent fibroblasts in a dose-dependent manner. MiR-145-5p was found to be highly enriched in P-MSC-EVs. MiR-145-5p inhibitors effectively attenuated the P-MSC-EV-induced functional improvements of senescent fibroblasts. MiR-145-5p mimics simulated the effects of P-MSC-EVs on functional improvements of fibroblasts by suppressing the expression of cyclin-dependent kinase inhibitor 1A and activating the extracellular signal regulated kinase (Erk)/protein kinase B (Akt) signaling pathway. Furthermore, local application of miR-145-5p agomir mimicked the effects of P-MSC-EVs on wound healing. Conclusions These results suggest that P-MSC-EVs accelerate diabetic wound healing by improving the function of senescent fibroblasts through the transfer of miR-145-5p, which targets cyclin-dependent kinase inhibitor 1A to activate the Erk/Akt signaling pathway. P-MSC-EVs are promising therapeutic candidates for diabetic wound treatment.
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Affiliation(s)
- Jianlong Su
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
- School of Medicine, NanKai University, 94 Weijin Road, Nankai District, Tianjin 300071, China
| | - Qian Wei
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Kui Ma
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Yaxi Wang
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Wenzhi Hu
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Hao Meng
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Qiankun Li
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Yuehou Zhang
- Burn and Plastic Surgery, Zhongda Hospital Affiliated Southeast University, Dingjiaqiao 87, Gulou District, Nanjing 210009, China
| | - Wenhua Zhang
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Haihong Li
- Department of Wound Repair, Institute of Wound Repair and Regeneration Medicine, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, 6019 Xililiuxian Road, Nanshan District, Shenzhen 518055, China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
- School of Medicine, NanKai University, 94 Weijin Road, Nankai District, Tianjin 300071, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, 51 Fucheng Road, Haidian District, Beijing 100048, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, 51 Fucheng Road, Haidian District, Beijing 100048, China
| | - Cuiping Zhang
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Division and the 4th Medical Center of Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing 100048, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, 51 Fucheng Road, Haidian District, Beijing 100048, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, 51 Fucheng Road, Haidian District, Beijing 100048, China
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Extracellular Vesicles from Human Umbilical Cord Mesenchymal Stem Cells Facilitate Diabetic Wound Healing Through MiR-17-5p-mediated Enhancement of Angiogenesis. Stem Cell Rev Rep 2021; 18:1025-1040. [PMID: 33942217 DOI: 10.1007/s12015-021-10176-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 12/14/2022]
Abstract
Endothelial dysfunction caused by persistent hyperglycemia in diabetes is responsible for impaired angiogenesis in diabetic wounds. Extracellular vehicles (EVs) are considered potential therapeutic tools to promote diabetic wound healing. The aim of this study was to investigate the effects of EVs secreted by human umbilical cord mesenchymal stem cells (hucMSC-EVs) on angiogenesis under high glucose (HG) conditions in vivo and in vitro and to explore the underlying mechanisms. In vivo, local application of hucMSC-EVs enhanced wound healing and angiogenesis. In vitro, hucMSC-EVs promoted proliferation, migration, and tube formation by inhibiting phosphatase and tensin homolog (PTEN) expression and activating the AKT/HIF-1α/VEGF pathways. MiR-17-5p was found to be highly enriched in hucMSC-EVs. In vitro, MiR-17-5p agomirs downregulated the expression of PTEN and activated the AKT/HIF-1α/VEGF pathway to promote proliferation, migration, and tube formation in HG-treated HUVECs. In vivo, miR-17-5p agomirs mimicked the effects of hucMSC-EVs on wound healing and angiogenesis, whereas miR-17-5p inhibitors reversed their effects. Our findings suggest that hucMSC-EVs have regenerative and protective effects on HG-induced endothelial cells via transfer of miR-17-5p targeting PTEN/ AKT/HIF-1α/VEGF pathway, thereby accelerating diabetic wound healing. Thus, hucMSC-EVs may be promising therapeutic candidates for improving diabetic wound angiogenesis.
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Bi Q, Liu J, Wang X, Sun F. Downregulation of miR-27b promotes skin wound healing in a rat model of scald burn by promoting fibroblast proliferation. Exp Ther Med 2020; 20:63. [PMID: 32952653 PMCID: PMC7485298 DOI: 10.3892/etm.2020.9191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 04/29/2020] [Indexed: 12/17/2022] Open
Abstract
The aim of the present study was to investigate the effect and mechanism of action of microRNA (miR)-27b on skin wound healing in rats with deep second-degree scald burns and in BJ human skin fibroblast cells. Rat models with deep second-degree scald burns were constructed and injected with miR-27b mimics and inhibitors at the wound site daily for 21 days. Healing of burned skin tissues was observed at 0, 3, 7, 14 and 21 days following modeling. H&E and Masson staining were used to observe the pathological structure and degree of collagen fibers in the burned skin tissues. The effects of miR-27b on BJ cell proliferation and migration were determined by MTT and scratch assays. Matrix metalloproteinase-1 (MMP-1), α-smooth muscle actin (α-SMA), collagen I and collagen III expression in rat skin tissues and BJ cells were measured via reverse transcription-quantitative PCR and western blot analysis. The results of the in vivo experiments demonstrated that miR-27b inhibition accelerated scalded skin healing and induced fibroblast growth. Furthermore, the in vitro experiments revealed that miR-27b inhibition increased BJ cell proliferation and migration. Furthermore, miR-27b inhibition upregulated MMP-1, α-SMA, collagen I and collagen III expression in the skin tissues and cells, while the overexpression of miR-27b demonstrated the opposite effect. In conclusion, the results of the present study revealed that miR-27b inhibition increased fibroblast proliferation, thereby accelerating scald wound healing in rats.
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Affiliation(s)
- Qingxia Bi
- Department of Burn and Cosmetology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Jingyan Liu
- Department of Burn and Cosmetology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Xueming Wang
- Department of Burn and Cosmetology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Furong Sun
- Department of Burn and Cosmetology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
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Quintana HT, Baptista VIDA, Lazzarin MC, Antunes HKM, Le Sueur-Maluf L, de Oliveira CAM, de Oliveira F. Insulin Modulates Myogenesis and Muscle Atrophy Resulting From Skin Scald Burn in Young Male Rats. J Surg Res 2020; 257:56-68. [PMID: 32818785 DOI: 10.1016/j.jss.2020.07.040] [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: 10/19/2018] [Revised: 06/18/2020] [Accepted: 07/07/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Burn injuries (BIs) due to scalding are one of the most common accidents among children. BIs greater than 40% of total body surface area are considered extensive and result in local and systemic response. We sought to assess morphological and myogenic mechanisms through both short- and long-term intensive insulin therapies that affect the skeletal muscle after extensive skin BI in young rats. MATERIALS AND METHODS Wistar rats aged 21 d were distributed into four groups: control (C), control with insulin (C + I), scald burn injury (SI), and SI with insulin (SI + I). The SI groups were submitted to a 45% total body surface area burn, and the C + I and SI + I groups received insulin (5 UI/Kg/d) for 4 or 14 d. Glucose tolerance and the homeostatic model assessment of insulin resistance index were determined. Gastrocnemius muscles were analyzed for histopathological, morphometric, and immunohistochemical myogenic parameters (Pax7, MyoD, and MyoG); in addition, the expression of genes related to muscle atrophy (MuRF1 and MAFbx) and its regulation (IGF-1) were also assessed. RESULTS Short-term treatment with insulin favored muscle regeneration by primary myogenesis and decreased muscle atrophy in animals with BIs, whereas the long-term treatment modulated myogenesis by increasing the MyoD protein. Both treatments improved histopathological parameters and secondary myogenesis by increasing the MyoG protein. CONCLUSIONS Treatment with insulin benefits myogenic parameters during regeneration and modulates MuRF1, an important mediator of muscle atrophy.
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Affiliation(s)
| | | | | | | | | | | | - Flavia de Oliveira
- Departamento de Biociências, Universidade Federal de São Paulo, Santos, SP, Brazil.
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