1
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Iacopetti I, Perazzi A, Patruno M, Contiero B, Carolo A, Martinello T, Melotti L. Assessment of the quality of the healing process in experimentally induced skin lesions treated with autologous platelet concentrate associated or unassociated with allogeneic mesenchymal stem cells: preliminary results in a large animal model. Front Vet Sci 2023; 10:1219833. [PMID: 37559892 PMCID: PMC10407250 DOI: 10.3389/fvets.2023.1219833] [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: 05/09/2023] [Accepted: 07/13/2023] [Indexed: 08/11/2023] Open
Abstract
Regenerative medicine for the treatment of skin lesions is an innovative and rapidly developing field that aims to promote wound healing and restore the skin to its original condition before injury. Over the years, different topical treatments have been evaluated to improve skin wound healing and, among them, mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) have shown promising results for this purpose. This study sought to evaluate the quality of the healing process in experimentally induced full-thickness skin lesions treated with PRP associated or unassociated with MSCs in a sheep second intention wound healing model. After having surgically created full-thickness wounds on the back of three sheep, the wound healing process was assessed by performing clinical evaluations, histopathological examinations, and molecular analysis. Treated wounds showed a reduction of inflammation and contraction along with an increased re-epithelialization rate and better maturation of the granulation tissue compared to untreated lesions. In particular, the combined treatment regulated the expression of collagen types I and III resulting in a proper resolution of the granulation tissue contrary to what was observed in untreated wounds; moreover, it led to a better maturation and organization of skin adnexa and collagen fibers in the repaired skin compared to untreated and PRP-treated wounds. Overall, both treatments improved the wound healing process compared to untreated wounds. Wounds treated with PRP and MSCs showed a healing progression that qualitatively resembles a restitutio ad integrum of the repaired skin, showing features typical of a mature healthy dermis.
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Affiliation(s)
- Ilaria Iacopetti
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Anna Perazzi
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
| | - Barbara Contiero
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Anna Carolo
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
| | | | - Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
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2
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Su CY, Liu TY, Wang HV, Yang WC. Histopathological Study on Collagen in Full-Thickness Wound Healing in Fraser's Dolphins ( Lagenodelphis hosei). Animals (Basel) 2023; 13:ani13101681. [PMID: 37238111 DOI: 10.3390/ani13101681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Fraser's dolphins (Lagenodelphis hosei) possess great healing abilities. Their skin composition can be restored after wounding, including collagen spacing, orientation, and bundle thickness. However, it remains unclear how collagens are involved in the wound-healing process and eventually regain normality in Fraser's dolphins. Learned from the other two scarless healing animals, changes in type III/I collagen composition are believed to modulate the wound healing process and influence the scarring or scarless fate determination in human fetal skin and spiny mouse skin. In the current study, Herovici's, trichrome, and immunofluorescence staining were used on normal and wounded skin samples in Fraser's dolphins. The results suggested that type I collagens were the main type of collagens in the normal skin of Fraser's dolphins, while type III collagens were barely seen. During the wound healing process, type III collagens showed at early wound healing stages, and type I collagen increased in the mature healed wound. In an early healed wound, collagens were organized in a parallel manner, showing a transient hypertrophic-like scar, and eventually restored to normal collagen configuration and adipocyte distribution in the mature healed wound. The remarkable ability to remove excessive collagens merits further investigation to provide new insights into clinical wound management.
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Affiliation(s)
- Chen-Yi Su
- School of Veterinary Medicine, National Taiwan University, Taipei 106216, Taiwan
| | - Tzu-Yu Liu
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan
- Marine Biology and Cetacean Research Center, National Cheng Kung University, Tainan 701, Taiwan
| | - Hao-Ven Wang
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan
- Marine Biology and Cetacean Research Center, National Cheng Kung University, Tainan 701, Taiwan
- Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Wei-Cheng Yang
- School of Veterinary Medicine, National Taiwan University, Taipei 106216, Taiwan
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3
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Rai V, Moellmer R, Agrawal DK. Stem Cells and Angiogenesis: Implications and Limitations in Enhancing Chronic Diabetic Foot Ulcer Healing. Cells 2022; 11:cells11152287. [PMID: 35892584 PMCID: PMC9330772 DOI: 10.3390/cells11152287] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 01/27/2023] Open
Abstract
Nonhealing diabetic foot ulcers (DFUs) are a continuing clinical issue despite the improved treatment with wound debridement, off-loading the ulcer, medication, wound dressings, and preventing infection by keeping the ulcer clean. Wound healing is associated with granulation tissue formation and angiogenesis favoring the wound to enter the resolution phase of healing followed by healing. However, chronic inflammation and reduced angiogenesis in a hyperglycemic environment impair the normal healing cascade and result in chronically non-healing diabetic foot ulcers. Promoting angiogenesis is associated with enhanced wound healing and using vascular endothelial growth factors has been proven beneficial to promote neo-angiogenesis. However, still, nonhealing DFUs persist with increased risks of amputation. Regenerative medicine is an evolving branch applicable in wound healing with the use of stem cells to promote angiogenesis. Various studies have reported promising results, but the associated limitations need in-depth research. This article focuses on summarizing and critically reviewing the published literature since 2021 on the use of stem cells to promote angiogenesis and enhance wound healing in chronic non-healing DFUs.
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Affiliation(s)
- Vikrant Rai
- Department of Translational Research, Western University of Health Sciences, Pomona, CA 91766, USA;
- Correspondence: ; Tel.: +1-909-469-7042
| | - Rebecca Moellmer
- College of Podiatric Medicine, Western University of Health Sciences, Pomona, CA 91766, USA;
| | - Devendra K. Agrawal
- Department of Translational Research, Western University of Health Sciences, Pomona, CA 91766, USA;
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4
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Ishida Y, Nosaka M, Kondo T. Bone Marrow-Derived Cells and Wound Age Estimation. Front Med (Lausanne) 2022; 9:822572. [PMID: 35155503 PMCID: PMC8828650 DOI: 10.3389/fmed.2022.822572] [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: 11/25/2021] [Accepted: 01/03/2022] [Indexed: 12/20/2022] Open
Abstract
Appropriate technology as well as specific target cells and molecules are key factors for determination of wound vitality or wound age in forensic practice. Wound examination is one of the most important tasks for forensic pathologists and is indispensable to distinguish antemortem wounds from postmortem damage. For vital wounds, estimating the age of the wound is also essential in determining how the wound is associated with the cause of death. We investigated bone marrow-derived cells as promising markers and their potential usefulness in forensic applications. Although examination of a single marker cannot provide high reliability and objectivity in estimating wound age, evaluating the appearance combination of bone marrow-derived cells and the other markers may allow for a more objective and accurate estimation of wound age.
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Affiliation(s)
- Yuko Ishida
- *Correspondence: Yuko Ishida ; orcid.org/0000-0001-6104-7599
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5
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Zhang Y, Li T, Zhao C, Li J, Huang R, Zhang Q, Li Y, Li X. An Integrated Smart Sensor Dressing for Real-Time Wound Microenvironment Monitoring and Promoting Angiogenesis and Wound Healing. Front Cell Dev Biol 2021; 9:701525. [PMID: 34422823 PMCID: PMC8378138 DOI: 10.3389/fcell.2021.701525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/19/2021] [Indexed: 12/28/2022] Open
Abstract
Prolonged chronic wound healing not only places great stress on patients but also increase the health care burden. Fortunately, the emergence of tissue-engineered dressings has provided a potential solution for these patients. Recently, the relationship between the wound microenvironment and wound healing has been gradually clarified. Therefore, the state of wounds can be roughly ascertained by monitoring the microenvironment in real time. Here, we designed a three-layer integrated smart dressing, including a biomimetic nanofibre membrane, microenvironment sensor and β-cyclodextrin-containing gelatine methacryloyl (GelMA + β-cd) UV-crosslinked hydrogel. The hydrogel helped increase the expression of vascular endothelial growth factor (VEGF) through hypoxia-inducible factor-1α (HIF-1α) to promote neovascularization and wound healing. The microenvironment sensor, combined with the biological dressings, exhibited satisfactory measurement accuracy, stability, durability and biocompatibility. A BLE4.0 antenna was used to receive, display and upload wound microenvironment data in real time. Such integrated smart dressings can not only achieve biological functions but also monitor changes in the wound microenvironment in real time. These dressings can overcome the challenge of not knowing the state of the wound during the healing process and provide support for clinical work.
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Affiliation(s)
- Yuheng Zhang
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Air Force Hospital of Western Theater Command, Chengdu, China
| | - Tian Li
- Air Force Hospital of Western Theater Command, Chengdu, China.,School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Congying Zhao
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jinqing Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Rong Huang
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Qianru Zhang
- School of Software Center for High Performance Computing, Northwestern Polytechnical University, Xi'an, China
| | - Yongqian Li
- Key Laboratory of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi'an, China
| | - Xueyong Li
- Department of Burn and Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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6
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The Role of MSC in Wound Healing, Scarring and Regeneration. Cells 2021; 10:cells10071729. [PMID: 34359898 PMCID: PMC8305394 DOI: 10.3390/cells10071729] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 02/06/2023] Open
Abstract
Tissue repair and regeneration after damage is not completely understood, and current therapies to support this process are limited. The wound healing process is associated with cell migration and proliferation, extracellular matrix remodeling, angiogenesis and re-epithelialization. In normal conditions, a wound will lead to healing, resulting in reparation of the tissue. Several risk factors, chronic inflammation, and some diseases lead to a deficient wound closure, producing a scar that can finish with a pathological fibrosis. Mesenchymal stem/stromal cells (MSCs) are widely used for their regenerative capacity and their possible therapeutically potential. Derived products of MSCs, such as exosomes or extravesicles, have shown a therapeutic potential similar to MSCs, and these cell-free products may be interesting in clinics. MSCs or their derivative products have shown paracrine beneficial effects, regulating inflammation, modifying the fibroblast activation and production of collagen and promoting neovascularization and re-epithelialization. This review describes the effects of MSCs and their derived products in each step of the wound repair process. As well, it reviews the pre-clinical and clinical use of MSCs to benefit in skin wound healing in diabetic associated wounds and in pathophysiological fibrosis.
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Melotti L, Martinello T, Perazzi A, Iacopetti I, Ferrario C, Sugni M, Sacchetto R, Patruno M. A Prototype Skin Substitute, Made of Recycled Marine Collagen, Improves the Skin Regeneration of Sheep. Animals (Basel) 2021; 11:ani11051219. [PMID: 33922557 PMCID: PMC8145883 DOI: 10.3390/ani11051219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Marine ecosystems are a huge source of unexplored “blue” materials for different applications. The edible part of sea urchin is limited, and the vast majority of the product ends up as waste. Our studies intend to fully recycle wastes from the food industry and reconvert them in high added-value products, as innovative biocompatible skin substitutes for tissue regeneration. The aim of the present work is to apply the pioneering skin substitute in in vivo experimental wounds to test its regenerative potential and compare it, in a future study, to the available commercial membranes produced with collagen of bovine, porcine, and equine origin. Results are encouraging since the skin substitute made with marine collagen reduced inflammation, promoted the deposition of granulation tissue, and enhanced a proper re-epithelialization with the adequate development of skin appendages. In summary, our findings might be of great interest for processing industries and biotech companies which transform waste materials in high-valuable and innovative products for Veterinary advanced applications. Abstract Skin wound healing is a complex and dynamic process that aims to restore lesioned tissues. Collagen-based skin substitutes are a promising treatment to promote wound healing by mimicking the native skin structure. Recently, collagen from marine organisms has gained interest as a source for producing biomaterials for skin regenerative strategies. This preliminary study aimed to describe the application of a collagen-based skin-like scaffold (CBSS), manufactured with collagen extracted from sea urchin food waste, to treat experimental skin wounds in a large animal. The wound-healing process was assessed over different time points by the means of clinical, histopathological, and molecular analysis. The CBSS treatment improved wound re-epithelialization along with cell proliferation, gene expression of growth factors (VEGF-A), and development of skin adnexa throughout the healing process. Furthermore, it regulated the gene expression of collagen type I and III, thus enhancing the maturation of the granulation tissue into a mature dermis without any signs of scarring as observed in untreated wounds. The observed results (reduced inflammation, better re-epithelialization, proper development of mature dermis and skin adnexa) suggest that sea urchin-derived CBSS is a promising biomaterial for skin wound healing in a “blue biotechnologies” perspective for animals of Veterinary interest.
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Affiliation(s)
- Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell’Università 16, Legnaro, 35020 Padova, Italy; (L.M.); (R.S.)
| | - Tiziana Martinello
- Department of Veterinary Medicine, University of Bari, SP. Casamassima Km.3, Valenzano, 70010 Bari, Italy;
| | - Anna Perazzi
- Department of Animal Medicine, Production and Health, University of Padova, Viale dell’Università 16, Legnaro, 35020 Padova, Italy;
| | - Ilaria Iacopetti
- Department of Animal Medicine, Production and Health, University of Padova, Viale dell’Università 16, Legnaro, 35020 Padova, Italy;
- Correspondence: (I.I.); (M.S.); (M.P.)
| | - Cinzia Ferrario
- Department of Environmental Science and Policy, University of Milan, Via Celoria, 2, 20133 Milan, Italy;
- Center for Complexity and Biosystems, Department of Physics, University of Milan, Via Celoria, 16, 20133 Milan, Italy
| | - Michela Sugni
- Department of Environmental Science and Policy, University of Milan, Via Celoria, 2, 20133 Milan, Italy;
- Center for Complexity and Biosystems, Department of Physics, University of Milan, Via Celoria, 16, 20133 Milan, Italy
- Correspondence: (I.I.); (M.S.); (M.P.)
| | - Roberta Sacchetto
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell’Università 16, Legnaro, 35020 Padova, Italy; (L.M.); (R.S.)
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell’Università 16, Legnaro, 35020 Padova, Italy; (L.M.); (R.S.)
- Correspondence: (I.I.); (M.S.); (M.P.)
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8
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Despoudi K, Mantzoros I, Ioannidis O, Loutzidou L, Christidis P, Chatzakis C, Gkasdaris G, Raptis D, Pramateftakis MG, Angelopoulos S, Zaraboukas T, Koliakos G, Tsalis K. Healing of colonic anastomosis in rats under obstructive ileus conditions. Discoveries (Craiova) 2021; 9:e129. [PMID: 34849396 PMCID: PMC8627191 DOI: 10.15190/d.2021.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/09/2021] [Accepted: 05/10/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The anastomosis leak in colon resections is a crucial post-operative complication with significant morbidity and mortality. Methods: Forty (40) Wistar rats were allocated in two groups. In SHAM group only anastomosis was performed. In ILEUS group anastomosis was performed following one day of ileus. Animals in both groups were subdivided in two groups according to the day they were sacrificed, 4th or 8th post-operative day. A number of variables between the groups were estimated. RESULTS Body weight loss was higher following obstructive ileus on both days. Adhesion score in 4th and 8th post-operative day was higher in ILEUS1, ILEUS2 groups compared to SHAM1, SHAM2 groups respectively (p<0.001 for both). Neovascularization decreased following obstructive ileus compared to control on the 4th day (ILEUS1 vs. SHAM1, p=0.038). Bursting pressure was lower in ILEUS2 group than SHAM2 group (p<0.001). The number of fibroblasts decreased following obstructive ileus compared to control on the 4th and 8th day (ILEUS1 vs. SHAM1, p=0.001, ILEUS2 vs SHAM2, p=0.016). Hydroxyproline concentration was decreased in ILEUS2 group compared to SHAM2 group (p<0.001). CONCLUSIONS The balance of collagenolysis and collagenogenesis plays a decisive role in the healing of anastomoses following bowel obstruction. Under those circumstances, anastomosis' bursting pressure is reduced owning to decreased neovascularization, reduced fibroblast presence and lower hydroxyproline concertation. In our study, local inflammation, neocollagen concentration and collagenase activity were not associated with this adverse effect. However, further research should delineate the mechanisms of healing of colonic anastomoses and identify those factors that can improve our outcomes.
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Affiliation(s)
- Kalliopi Despoudi
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Ioannis Mantzoros
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Orestis Ioannidis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Lydia Loutzidou
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Panagiotis Christidis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Christos Chatzakis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Grigorios Gkasdaris
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Dimitrios Raptis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Manousos George Pramateftakis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Stamatios Angelopoulos
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Thomas Zaraboukas
- Department of Pathology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - George Koliakos
- Department of Biochemistry, School of Medicine, Aristotle University of Thessaloniki, Greece
| | - Konstantinos Tsalis
- 4th Academic Department of Surgery, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
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9
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İbiloglu İ, Alabalik U, Keles AN, Aydogdu G, Basuguy E, Buyukbayram H. Ecballium elaterium extract reduces fibrosis during wound healing in rats. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1920847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- İbrahim İbiloglu
- Department of Pathology, School of Medicine, Dicle University, Diyarbakir, Turkey
| | - Ulas Alabalik
- Department of Pathology, School of Medicine, Dicle University, Diyarbakir, Turkey
| | - Ayse Nur Keles
- Department of Pathology, School of Medicine, Dicle University, Diyarbakir, Turkey
| | - Gulay Aydogdu
- Department of Pathology, School of Medicine, Dicle University, Diyarbakir, Turkey
| | - Erol Basuguy
- Department of Pediatric Surgery, School of Medicine, Dicle University, Diyarbakir, Turkey
| | - Huseyin Buyukbayram
- Department of Pathology, School of Medicine, Dicle University, Diyarbakir, Turkey
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Sparks HD, Sigaeva T, Tarraf S, Mandla S, Pope H, Hee O, Di Martino ES, Biernaskie J, Radisic M, Scott WM. Biomechanics of Wound Healing in an Equine Limb Model: Effect of Location and Treatment with a Peptide-Modified Collagen-Chitosan Hydrogel. ACS Biomater Sci Eng 2020; 7:265-278. [PMID: 33342210 DOI: 10.1021/acsbiomaterials.0c01431] [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] [Indexed: 12/14/2022]
Abstract
The equine distal limb wound healing model, characterized by delayed re-epithelialization and a fibroproliferative response to wounding similar to that observed in humans, is a valuable tool for the study of biomaterials poised for translation into both the veterinary and human medical markets. In the current study, we developed a novel method of biaxial biomechanical testing to assess the functional outcomes of healed wounds in a modified equine model and discovered significant functional and structural differences in both unwounded and injured skin at different locations on the distal limb that must be considered when using this model in future work. Namely, the medial skin was thicker and displayed earlier collagen engagement, medial wounds experienced a greater proportion of wound contraction during closure, and proximal wounds produced significantly more exuberant granulation tissue. Using this new knowledge of the equine model of aberrant wound healing, we then investigated the effect of a peptide-modified collagen-chitosan hydrogel on wound healing. Here, we found that a single treatment with the QHREDGS (glutamine-histidine-arginine-glutamic acid-aspartic acid-glycine-serine) peptide-modified hydrogel (Q-peptide hydrogel) resulted in a higher rate of wound closure and was able to modulate the biomechanical function toward a more compliant healed tissue without observable negative effects. Thus, we conclude that the use of a Q-peptide hydrogel provides a safe and effective means of improving the rate and quality of wound healing in a large animal model.
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Affiliation(s)
- Holly D Sparks
- Department of Veterinary Clinical & Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Taisiya Sigaeva
- Department of Systems Design Engineering, Faculty of Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.,Department of Civil Engineering and Centre for Bioengineering Research and Education, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
| | - Samar Tarraf
- Biomedical Engineering Graduate Program, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
| | - Serena Mandla
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto M5S3G9, Canada.,Toronto General Research Institute, University of Toronto, Toronto M5S3G9, Canada
| | - Hannah Pope
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Olivia Hee
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Elena S Di Martino
- Department of Civil Engineering and Centre for Bioengineering Research and Education, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
| | - Jeff Biernaskie
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada.,Alberta Children's Hospital Research Institute, Calgary, Alberta T2N 4N1, Canada.,Hotchkiss Brain Institute, Calgary, Alberta T2N 4N1, Canada
| | - Milica Radisic
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto M5S3G9, Canada.,Toronto General Research Institute, University of Toronto, Toronto M5S3G9, Canada.,Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S3G9, Canada
| | - W Michael Scott
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
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11
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Karakaya S, Süntar I, Yakinci OF, Sytar O, Ceribasi S, Dursunoglu B, Ozbek H, Guvenalp Z. In vivo bioactivity assessment on Epilobium species: A particular focus on Epilobium angustifolium and its components on enzymes connected with the healing process. JOURNAL OF ETHNOPHARMACOLOGY 2020; 262:113207. [PMID: 32730870 DOI: 10.1016/j.jep.2020.113207] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/15/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Epilobium species are generally known as "Yakı Otu" in Turkey, which mens "plaster herb" in English. Young shoots of Epilobium angustifolium L., Epilobium stevenii Boiss., and Epilobium hirsutum L. are consumed as salad or meal. These species have been used as a poultice for the treatment of mouth wounds in traditional medicine. An ointment prepared from leaves is used for skin disorders in children. AIM OF THE STUDY We aimed to evaluate the ethnopharmacological use of Epilobium angustifolium, E. stevenii, and E. hirsutum by using in vivo and in vitro experimental models, and to identify the active wound-healer compound(s) and to explain the probable mechanism of the wound-healing activity. MATERIALS AND METHODS Evaluation of wound healing effects of plant extracts was performed in rats and mice by linear incision and circular excision wound models. Determination of total phenolic constituents and antioxidant capacities, which are known to promote the wound healing process, were carried out through Folin-Ciocalteau method and 2,2 Diphenyl 1 picrylhydrazyl (DPPH) scavenging assay as well as determination of total antioxidant status (TAS) and total oxidant status (TOS) on the treated tissues. The active ethyl acetate (EtOAc) sub-extract of E. angustifolium was fractionated by different chromatographic separation techniques. The structures of isolated compounds were elucidated via detailed analyzes (NMR and LC/MS). In addition, in vitro collagenase, hyaluronidase, and elastase enzymes inhibitory activity tests were performed on the isolated compounds to discover the activation pathways of the samples. RESULTS Among the methanol (MeOH) extracts, E. angustifolium had the highest wound healing activity. Among the sub-extracts, EtOAc showed the highest wound healing activity. Thus, EtOAc sub-extract was subjected to chromatography to isolate the active compounds. Five known flavonoids namely hyperoside (quercetin-3-O-β-D-galactoside) (1), kaempferol (2), kaempferol-3-O-α-L-rhamno pyranoside (3), quercetin-3-O-α-L-rhamno pyranoside (4), and quercetin-3-O-α-L-arabino pyranoside (5) were isolated from the EtOAc sub-extract of E. angustifolium. In vitro tests showed that hyperoside could be the compound responsible for the wound-healing activity by its significant anti-hyaluronidase, anti-collagenase, and antioxidant activities. CONCLUSION The EtOAc sub-extract of the aerial part of Epilobium angustifolium displayed remarkable wound-healing activity with anti-hyaluronidase, anti-collagenase, and antioxidant activities. Hyperoside was detected as the primary active compound of the aerial parts. According to the results, we suggest that EtOAc sub-extract of E. angustifolium and hyperoside may be a potent nominee to be used for the improvement of a wound-healing agent.
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Affiliation(s)
- Songul Karakaya
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Ipek Süntar
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey.
| | - Omer Faruk Yakinci
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey; National Poison Information Service, Ministry of Health, Ankara, Turkey
| | - Oksana Sytar
- Department of Plant Biology, Institute of Biology, Kiev National University of Taras Shevchenko, Kyiv, Ukraine; Department of Plant Physiology, Slovak University of Agriculture in Nitra, Slovakia
| | - Songul Ceribasi
- Department of Pathology, Faculty of Veterinary Medicine, Firat University, Elazıg, Turkey
| | - Benan Dursunoglu
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Hilal Ozbek
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Zuhal Guvenalp
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
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Iacopetti I, Patruno M, Melotti L, Martinello T, Bedin S, Badon T, Righetto EM, Perazzi A. Autologous Platelet-Rich Plasma Enhances the Healing of Large Cutaneous Wounds in Dogs. Front Vet Sci 2020; 7:575449. [PMID: 33195571 PMCID: PMC7649378 DOI: 10.3389/fvets.2020.575449] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/22/2020] [Indexed: 12/11/2022] Open
Abstract
Platelet-rich plasma (PRP) is known to play a crucial role in skin wound healing, in both Human and Veterinary Medicine. Remarkably, until now, no studies have reported PRP treatment in subacute full-thickness skin wounds of the dog. The aim of this study was to evaluate the effects of two consecutive applications of autologous PRP, with the second application after 15 days, in 6 dogs showing large subacute skin wounds. The percentage of contraction, re-epithelialization and healing in all treated patients indicated that no complications or side effects, associated with consecutive PRP treatments, occurred in any patient and all wounds achieved complete closure and re-epithelialization. Our results suggest a positive effect of repeated autologous topical PRP treatments in large cutaneous subacute wounds of different etiology. Therefore, this PRP treatment could represent a simple, cost-effective, and valid alternative to promote healing processes in subacute large wounds cases in dogs.
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Affiliation(s)
- Ilaria Iacopetti
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Tiziana Martinello
- Department of Veterinary Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Silvia Bedin
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy
| | - Tamara Badon
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy
| | | | - Anna Perazzi
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy
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McIver VC, Tsang AS, Symonds NE, Perkins NR, Uquillas E, Dart CM, Jeffcott LB, Dart AJ. Effects of topical treatment of cannabidiol extract in a unique manuka factor 5 manuka honey carrier on second intention wound healing on equine distal limb wounds: a preliminary study. Aust Vet J 2020; 98:250-255. [PMID: 32096215 DOI: 10.1111/avj.12932] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Evaluate the effect of topical 1% cannabidiol on second intention wound healing in distal limb wounds of horses. DESIGN Experimental. ANIMALS Six Standardbred horses. METHODS A total of five 2.5 cm × 2.5 cm full thickness skin wounds were created on the dorsomedial aspect of the metacarpi of 6 horses. Wounds were contaminated with faeces on the day of wound creation. Each wound was then assigned to a treatment group; compounded 1% cannabidiol in unique manuka factor (UMF) 5 manuka honey, UMF 5 manuka honey, UMF 20 manuka honey or saline. Each treatment was applied topically daily for a total of 42 days. Legs were bandaged and bandages were changed, daily, for 13 days postoperatively. Digital photographs of each wound were taken on day 1 then weekly for 6 weeks. Wound size, daily healing rate and total time to healing were recorded and compared statistically. RESULTS Irrespective of the treatment, wounds did not retract as expected in the first 7 days after wound creation. There was no difference in wound area, daily healing rate, days to complete healing between treatment groups. CONCLUSIONS This preliminary study failed to demonstrate any difference in wound healing variables between treatment groups in this model of second intention wound healing. This was unexpected due to the established effects of UMF 20 manuka honey on wound healing using the same model. This may be due to systemic effects of cannabidiol and study design. Further research into the use of cannabidiol in equine wounds is warranted.
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Affiliation(s)
- V C McIver
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - A S Tsang
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - N E Symonds
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - N R Perkins
- School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, Queensland, Australia
| | - E Uquillas
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - C M Dart
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - L B Jeffcott
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
| | - A J Dart
- Research and Clinical Training Unit, University Veterinary Teaching Hospital, The University of Sydney, Camden, New South Wales, Australia
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14
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Hou J, Kim S. Possible role of ginsenoside Rb1 in skin wound healing via regulating senescent skin dermal fibroblast. Biochem Biophys Res Commun 2018; 499:381-388. [DOI: 10.1016/j.bbrc.2018.03.170] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 03/22/2018] [Indexed: 12/17/2022]
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15
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Khafaga AF, Abu-Ahmed HM, El-Khamary AN, Elmehasseb IM, Shaheen HM. Enhancement of Equid Distal Limb Wounds Healing by Topical Application of Silver Nanoparticles. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2017.11.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Abstract
Chronic wounds pose considerable public health challenges and burden. Wound healing is known to require the participation of macrophages, but mechanisms remain unclear. The M1 phenotype macrophages have a known scavenger function, but they also play multiple roles in tissue repair and regeneration when they transition to an M2 phenotype. Macrophage precursors (mononuclear cells/monocytes) follow the influx of PMN neutrophils into a wound during the natural wound-healing process, to become the major cells in the wound. Natural wound-healing process is a four-phase progression consisting of hemostasis, inflammation, proliferation, and remodeling. A lag phase of 3-6 days precedes the remodeling phase, which is characterized by fibroblast activation and finally collagen production. This normal wound-healing process can be accelerated by the intracellular delivery of ATP to wound tissue. This novel ATP-mediated acceleration arises due to an alternative activation of the M1 to M2 transition (macrophage polarization), a central and critical feature of the wound-healing process. This response is also characterized by an early increased release of pro-inflammatory cytokines (TNF, IL-1 beta, IL-6), a chemokine (MCP-1), an activation of purinergic receptors (a family of plasma membrane receptors found in almost all mammalian cells), and an increased production of platelets and platelet microparticles. These factors trigger a massive influx of macrophages, as well as in situ proliferation of the resident macrophages and increased synthesis of VEGFs. These responses are followed, in turn, by rapid neovascularization and collagen production by the macrophages, resulting in wound covering with granulation tissue within 24 h.
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Affiliation(s)
| | - Sufan Chien
- Noveratech LLC, Louisville, KY, USA.
- Department of Surgery, University of Louisville, School of Medicine, Louisville, KY, USA.
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Bischofberger AS, Dart CM, Horadagoda N, Perkins NR, Jeffcott LB, Little CB, Dart AJ. Effect of Manuka honey gel on the transforming growth factor β1 and β3 concentrations, bacterial counts and histomorphology of contaminated full-thickness skin wounds in equine distal limbs. Aust Vet J 2016; 94:27-34. [PMID: 26814159 DOI: 10.1111/avj.12405] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/31/2014] [Accepted: 10/16/2014] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To investigate the effect of 66% Manuka honey gel on the concentrations of transforming growth factor (TGF)-β1 and TGF-β3, bacterial counts and histomorphology during healing of contaminated equine distal limb wounds. METHODS In this experimental study of 10 Standardbred horses, five full-thickness skin wounds (2 × 1.5 cm) were created on one metacarpus and six similar wounds were created on the contralateral metacarpus. Wounds were assigned to three groups: non-contaminated control wounds; contaminated control wounds; contaminated wounds treated daily with 1 mL Manuka honey gel topically for 10 days. For the contaminated wounds, faeces were applied for 24 h after wound creation. In five horses wounds were bandaged and in the other five horses wounds were left without a bandage. Biopsies were taken on days 1, 2, 7 and 10 after wounding to evaluate the effects of Manuka honey gel, wound contamination and bandaging on TGF-β1 and TGF-β3 concentrations, aerobic and anaerobic bacterial counts, and histomorphology. RESULTS Manuka honey gel had no significant effect on TGF-β1 and TGF-β3 concentrations or wound bacterial counts. Manuka honey gel decreased wound inflammation (days 7, 10), increased angiogenesis (days 2, 7, 10), increased fibrosis and collagen organisation (day 7) and increased epithelial hyperplasia (days 7, 10). CONCLUSIONS Treatment with Manuka honey gel resulted in a more organised granulation tissue bed early in wound repair, which may contribute to enhanced healing of equine distal limb wounds.
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Affiliation(s)
- A S Bischofberger
- Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, University of Sydney, Camden, New South Wales, Australia
| | - C M Dart
- Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, University of Sydney, Camden, New South Wales, Australia
| | - N Horadagoda
- Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, University of Sydney, Camden, New South Wales, Australia
| | - N R Perkins
- Ausvet Animal Health Services, Toowoomba, QLD, Australia
| | - L B Jeffcott
- Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, University of Sydney, Camden, New South Wales, Australia
| | - C B Little
- Raymond Purves Bone and Joint Research Laboratories, Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia
| | - A J Dart
- Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, University of Sydney, Camden, New South Wales, Australia.
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18
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Chen H, Jia P, Kang H, Zhang H, Liu Y, Yang P, Yan Y, Zuo G, Guo L, Jiang M, Qi J, Liu Y, Cui W, Santos HA, Deng L. Upregulating Hif-1α by Hydrogel Nanofibrous Scaffolds for Rapidly Recruiting Angiogenesis Relative Cells in Diabetic Wound. Adv Healthc Mater 2016; 5:907-18. [PMID: 26891197 DOI: 10.1002/adhm.201501018] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/02/2016] [Indexed: 12/30/2022]
Abstract
Nonhealing chronic wounds on foot are one of the most dreaded complications of diabetes, and biomedical scaffolds remain an attractive option for repairing or regenerating tissues. Accelerating angiogenesis in the early stage after injury is critical to wound healing process; however, the scaffolds accelerate the angiogenesis in the beginning but with the acceleration of vessel network formation the scaffold network hinders the process. In this study, the water soluble drugs-loaded hydrogel nanofibrous scaffolds are designed for rapidly recruiting angiogenesis relative cells and promoting wound healing. The sustained release profile of desferrioxamine (DFO), which continues for about 72 h, leads to significantly increase of neovascularization. The majority of the scaffold is degraded in 14 d, leaving enough space for cell proliferation and vessel formation. The in vitro results show that the scaffolds upregulate the expression of Hif-1α and vascular endothelial growth factor, and enhance the interaction between fibroblasts and endothelial cells. The in vivo studies show a higher expression of angiogenesis related cytokines. This study demonstrates that the DFO released from hydrogel nanofibrous scaffolds of quick degradation can interfere with the required prolyl-hydroxylases cofactors by acting as Fe(2+) chelator and upregulate the expression of Hif-1α, leading to a significant increase of the neovascularization.
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Affiliation(s)
- Hao Chen
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Peng Jia
- Department of Orthopaedics; The Second Affiliated Hospital of Soochow University; 1055 Sanxiang Road Soochow Jiangsu 215004 P. R. China
| | - Hui Kang
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Hongbo Zhang
- Division of Pharmaceutical Chemistry and Technology; Faculty of Pharmacy; University of Helsinki; Helsinki FI-00014 Finland
- Harvard John A. Paulson School of Applied Science and Engineering; Harvard University; Cambridge MA 02138 USA
| | - Yi Liu
- Rapid Manufacturing Engineering Center of Shanghai University; 99 Shangda Road Shanghai 200444 P. R. China
| | - Peilang Yang
- Department of Burn and Plastic surgery; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Yufei Yan
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Guilai Zuo
- Department of Orthopaedics; Qian Fo Shan Hospital; Shan Dong University; 16766 Jingshi Road Ji Nan Shandong 250014 P. R. China
| | - Lei Guo
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Min Jiang
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Jin Qi
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Yuanyuan Liu
- Rapid Manufacturing Engineering Center of Shanghai University; 99 Shangda Road Shanghai 200444 P. R. China
| | - Wenguo Cui
- Department of Orthopedics; The First Affiliated Hospital of Soochow University; Orthopedic Institute; Soochow University; 708 Renmin Road Suzhou Jiangsu 215006 P. R. China
| | - Hélder A. Santos
- Division of Pharmaceutical Chemistry and Technology; Faculty of Pharmacy; University of Helsinki; Helsinki FI-00014 Finland
| | - Lianfu Deng
- Shanghai Institute of Traumatology and Orthopaedics; Shanghai Key Laboratory for Prevention and Treatmentof Bone and Joint Diseases; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; 197 Ruijin 2nd Road Shanghai 200025 P. R. China
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Partlow J, Blikslager A, Matthews C, Law M, Daniels J, Baker R, Labens R. Effect of topically applied Saccharomyces boulardii on the healing of acute porcine wounds: a preliminary study. BMC Res Notes 2016; 9:210. [PMID: 27067538 PMCID: PMC4827247 DOI: 10.1186/s13104-016-2012-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/24/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Normal wound healing progresses through a series of interdependent physiological events: inflammation, angiogenesis, re-epithelialization, granulation tissue formation and extracellular matrix remodeling. Alterations in this process as well as the bacterial type and load on a wound may alter the wound healing rate. The purpose of this study was to evaluate the effect of topical Saccharomyces boulardii on the healing of acute cutaneous wounds, using a prospective, controlled, experimental study, with six purpose bred landrace pigs. RESULTS All wounds healed without apparent complications. Comparison of the mean 3D and 2D wound surface area measurements showed no significant difference between treatment groups as wounds decreased similarly in size over the duration of the study. A significant reduction in wound surface area was identified sooner using 3D assessments (by day 9) compared to 2D assessments (by day 12) (P < 0.001). There was no significant effect of treatment group on the number of multiple isolates or the most common isolates obtained relative to control wounds. There was no histologically appreciable difference between the wounds of the different groups. CONCLUSIONS Topical application of Saccharomyces boulardii does not hasten wound healing or change the wounds' microbiome under the conditions reported in this study.
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Affiliation(s)
| | - Anthony Blikslager
- />College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC 27607 USA
| | - Charles Matthews
- />North Carolina Comprehensive Headache Clinic, Raleigh, NC USA
- />North Carolina State University, Raleigh, NC USA
| | - Mac Law
- />College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC 27607 USA
| | | | - Rose Baker
- />Oregon State University, College of Veterinary Medicine Corvallis, Corvallis, OR USA
| | - Raphael Labens
- />Royal (Dick) School of Veterinary Studies and Roslin Institute, Roslin, Scotland, UK
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20
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Chen H, Guo L, Wicks J, Ling C, Zhao X, Yan Y, Qi J, Cui W, Deng L. Quickly promoting angiogenesis by using a DFO-loaded photo-crosslinked gelatin hydrogel for diabetic skin regeneration. J Mater Chem B 2016; 4:3770-3781. [DOI: 10.1039/c6tb00065g] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A desferrioxamine (DFO)-loaded photo-crosslinked gelatin hydrogel was used to reconstruct vessel network and prompt skin regeneration in diabetic wounds.
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Affiliation(s)
- Hao Chen
- Shanghai Institute of Traumatology and Orthopaedics
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases
- Ruijin Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200025
| | - Lei Guo
- Shanghai Institute of Traumatology and Orthopaedics
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases
- Ruijin Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200025
| | - Joshua Wicks
- Department of Orthopedics
- The First Affiliated Hospital of Soochow University
- Orthopedic Institute
- Soochow University
- Suzhou
| | - Christopher Ling
- Department of Orthopedics
- The First Affiliated Hospital of Soochow University
- Orthopedic Institute
- Soochow University
- Suzhou
| | - Xin Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi'an
- P. R. China
| | - Yufei Yan
- Shanghai Institute of Traumatology and Orthopaedics
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases
- Ruijin Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200025
| | - Jin Qi
- Shanghai Institute of Traumatology and Orthopaedics
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases
- Ruijin Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200025
| | - Wenguo Cui
- Department of Orthopedics
- The First Affiliated Hospital of Soochow University
- Orthopedic Institute
- Soochow University
- Suzhou
| | - Lianfu Deng
- Shanghai Institute of Traumatology and Orthopaedics
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases
- Ruijin Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200025
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Mudroňová D, Kožár M, Molnár L, Trbolová A. Viability and discrimination of avian peripheral blood mononuclear cells and thrombocytes intended for improvement of wound healing in birds. Acta Vet Hung 2014; 62:334-9. [PMID: 25038952 DOI: 10.1556/avet.2014.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Birds often suffer from skin injuries of different aetiology. Platelet-rich plasma (PRP) is successfully used for improvement of wound healing in humans and in some mammalian species (e.g. horses, dogs and cats), but experience with its application in avian patients has not yet been published. Therefore, the aim of this study was to test a quick method for the counting of isolated avian platelets and mononuclear leukocytes and to find an appropriate carrier for their application to the wounds of birds. It seems that flow cytometry can be used for the quick counting of isolated cells and the discrimination of thrombocytes, lymphocytes and eventually monocytes or debris. Of the tested gels and sponges routinely used for improvement of wound healing, a gelatin sponge (Gelaspon®) providing the highest numbers and viability of isolated cells proved to be the best carrier.
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Affiliation(s)
- Dagmar Mudroňová
- 1 University of Veterinary Medicine and Pharmacy Komenského 73 04 81 Košice Slovak Republic
| | - Martin Kožár
- 1 University of Veterinary Medicine and Pharmacy Komenského 73 04 81 Košice Slovak Republic
| | - Ladislav Molnár
- 1 University of Veterinary Medicine and Pharmacy Komenského 73 04 81 Košice Slovak Republic
| | - Alexandra Trbolová
- 1 University of Veterinary Medicine and Pharmacy Komenského 73 04 81 Košice Slovak Republic
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Revi D, Paul W, Anilkumar T, Sharma CP. Chitosan scaffold co-cultured with keratinocyte and fibroblast heals full thickness skin wounds in rabbit. J Biomed Mater Res A 2013. [DOI: 10.1002/jbm.a.35003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Deepa Revi
- Laboratory for Experimental Pathology, Biomedical Technology Wing; Sree ChitraTirunal Institute for Medical Sciences and Technology; Thiruvananthapuram 695012 India
| | - Willi Paul
- Biosurface Technology Division, Biomedical Technology Wing; Sree ChitraTirunal Institute for Medical Sciences and Technology; Thiruvananthapuram 695012 India
| | - T.V. Anilkumar
- Laboratory for Experimental Pathology, Biomedical Technology Wing; Sree ChitraTirunal Institute for Medical Sciences and Technology; Thiruvananthapuram 695012 India
| | - Chandra P. Sharma
- Biosurface Technology Division, Biomedical Technology Wing; Sree ChitraTirunal Institute for Medical Sciences and Technology; Thiruvananthapuram 695012 India
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Perazzi A, Busetto R, Martinello T, Drigo M, Pasotto D, Cian F, Patruno M, Iacopetti I. Description of a double centrifugation tube method for concentrating canine platelets. BMC Vet Res 2013; 9:146. [PMID: 23876182 PMCID: PMC3723642 DOI: 10.1186/1746-6148-9-146] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 07/18/2013] [Indexed: 01/07/2023] Open
Abstract
Background To evaluate the efficiency of platelet-rich plasma preparations by means of a double centrifugation tube method to obtain platelet-rich canine plasma at a concentration at least 4 times higher than the baseline value and a concentration of white blood cells not exceeding twice the reference range. A complete blood count was carried out for each sample and each concentrate. Whole blood samples were collected from 12 clinically healthy dogs (consenting blood donors). Blood was processed by a double centrifugation tube method to obtain platelet concentrates, which were then analyzed by a flow cytometry haematology system for haemogram. Platelet concentration and white blood cell count were determined in all samples. Results Platelet concentration at least 4 times higher than the baseline value and a white blood cell count not exceeding twice the reference range were obtained respectively in 10 cases out of 12 (83.3%) and 11 cases out of 12 (91.6%). Conclusions This double centrifugation tube method is a relatively simple and inexpensive method for obtaining platelet-rich canine plasma, potentially available for therapeutic use to improve the healing process.
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Affiliation(s)
- Anna Perazzi
- Department of Animal Medicine, Production and Health, University of Padova, Padova, Italy.
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Link KA, Koenig JB, Silveira A, Plattner BL, Lillie BN. Effect of unfocused extracorporeal shock wave therapy on growth factor gene expression in wounds and intact skin of horses. Am J Vet Res 2013; 74:324-32. [DOI: 10.2460/ajvr.74.2.324] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ultrasonographic assessment of standing laparotomy wound healing in dairy cows. Res Vet Sci 2012; 93:478-83. [DOI: 10.1016/j.rvsc.2011.07.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2010] [Revised: 06/16/2011] [Accepted: 07/29/2011] [Indexed: 11/20/2022]
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Extracellular matrix expression by equine oral and limb fibroblasts in in vitro culture. Res Vet Sci 2012; 92:213-8. [DOI: 10.1016/j.rvsc.2011.03.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 02/28/2011] [Accepted: 03/18/2011] [Indexed: 11/17/2022]
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Abstract
Care of equine wounds in the field can be a challenging endeavor. Many times, wound care is complicated by chronicity or by prior inappropriate care in addition to the great degree of tissue trauma that occurred when the horse was wounded. Recognizing involvement of synovial structures, loss of skin, and damage to bone are critical in the initial examination of wounds and will guide future care. Education of clients is also important in that preparing them for possible outcomes during healing may help improve compliance and proper treatment of wound. Owners and trainers often perform much of the daily care and monitoring of equine wounds and thus can greatly assist or impede the progress. Bandaging is important to management of equine wounds-especially on the limbs-and is sometimes overlooked because of its labor-intensive nature and the desire for a spray, ointment, or salve that will heal the wound. The practitioner that improves and utilizes his or her understanding of the wound-healing process in concert with his or her knowledge of local anatomy will be the one who is best equipped to care for wounds in ambulatory practice.
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Affiliation(s)
- Stephanie S Caston
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50010, USA.
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Effect of growth factors on the migration of equine oral and limb fibroblasts using an in vitro scratch assay. Vet J 2012; 193:539-44. [PMID: 22326783 DOI: 10.1016/j.tvjl.2012.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 01/06/2012] [Accepted: 01/08/2012] [Indexed: 11/21/2022]
Abstract
The objective of this study was to determine the effect of platelet derived growth factor BB (PDGF), epidermal growth factor (EGF), transforming growth factor β1 (TGFβ1), insulin like growth factor-1 (IGF-1) and fibroblast growth factor-2 (FGF-2) on the proliferation and migration of equine oral mucosa and leg skin fibroblast cell lines, using an in vitro scratch assay. Fibroblasts from the two sites were firstly grown to confluence and then an area of cells removed (cell void area). Cell migration alone (with the addition of the mitosis inhibitor mitomycin-C to the culture media) and proliferation and migration combined (without mitomycin-C) into the cell void area were observed at 0, 5, 10, 24 and 36 h. The presence of mitomycin-C in the culture media significantly slowed the closure of the cell void area, as mitosis was inhibited. For the oral cells only, TGFβ1 significantly slowed both migration (with mitomycin-C) and proliferation and migration combined (without mitomycin-C). For the limb cells only, both PDGF and FGF-2 significantly increased fibroblast proliferation and migration combined (without mitomycin-C). For both cell types, EGF significantly reduced migration (with mitomycin-C). IGF-1 had no effect on any of the parameters measured. It was concluded that TGFβ1, PDGF and FGF-2 have differential effects on the proliferation and migration of equine oral and limb fibroblasts. These differences in fibroblast responses to growth factors may in part form the basis of the different clinical outcomes for oral and limb wounds.
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Bischofberger AS, Dart CM, Perkins NR, Dart AJ. A Preliminary Study on the Effect of Manuka Honey on Second-Intention Healing of Contaminated Wounds on the Distal Aspect of the Forelimbs of Horses. Vet Surg 2011; 40:898-902. [DOI: 10.1111/j.1532-950x.2011.00886.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Andrea S. Bischofberger
- Biomedical Research and Clinical Trials Unit; University Veterinary Teaching Hospital, University of Sydney; Camden; Australia
| | - Christina M. Dart
- Biomedical Research and Clinical Trials Unit; University Veterinary Teaching Hospital, University of Sydney; Camden; Australia
| | | | - Andrew J. Dart
- Biomedical Research and Clinical Trials Unit; University Veterinary Teaching Hospital, University of Sydney; Camden; Australia
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Dart AJ, Dart CM, Dudhia J, Perkins N, Canfield P, Smith RKW. A preliminary study on the effect of wounding on transforming growth factor-β1 and cartilage oligomeric matrix protein concentrations in the skin of horses. Vet Surg 2010; 40:59-65. [PMID: 21062324 DOI: 10.1111/j.1532-950x.2010.00756.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate whether wound type or site influence the production of cartilage oligomeric matrix protein (COMP) and transforming growth factor β1 (TGF-β1), and determine if there is a correlation between TGF-β1and COMP during healing. STUDY DESIGN Experimental. ANIMALS Standardbred horses (n=6), 4-8 years old. METHODS Six, standardized, full-thickness skin wounds (open, straight, and elliptical) were surgically created on the neck (n=3) and metacarpus (3) on each horse. Wounds were randomly allocated to site and side. Tissue samples were collected before creating wounds and on days 7, 14, and 42. COMP concentration (μg/g dry weight of tissue) was determined using a standard competitive ELISA and TGF-β1 (ng/g dry weight of tissue) was determined using a commercially available sandwich ELISA. RESULTS COMP concentrations were higher in intact skin on the neck compared with the metacarpus (P=.02). There was no difference in COMP and TGF-β1 concentrations between the different wound types or sites during healing. There was no correlation between TGF-β1 and COMP during healing. CONCLUSIONS Within the limitations of the study design, production of COMP during healing of skin wounds does not appear to be influenced by wound type or anatomic site, nor does it appear to be correlated with TGF-β1 concentrations.
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Affiliation(s)
- Andrew J Dart
- Faculty of Veterinary Science, University of Sydney, Sydney, Australia.
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Saarto EE, Hielm-Björkman AK, Hette K, Kuusela EK, Brandão CVS, Luna SPL. Effect of a single acupuncture treatment on surgical wound healing in dogs: a randomized, single blinded, controlled pilot study. Acta Vet Scand 2010; 52:57. [PMID: 20950467 PMCID: PMC2965713 DOI: 10.1186/1751-0147-52-57] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 10/15/2010] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The aim of the study was to investigate the effect of acupuncture on wound healing after soft tissue or orthopaedic surgery in dogs. METHODS 29 dogs were submitted to soft tissue and/or orthopaedic surgeries. Five dogs had two surgical wounds each, so there were totally 34 wounds in the study. All owners received instructions for post operative care as well as antibiotic and pain treatment. The dogs were randomly assigned to treatment or control groups. Treated dogs received one dry needle acupuncture treatment right after surgery and the control group received no such treatment. A veterinary surgeon that was blinded to the treatment, evaluated the wounds at three and seven days after surgery in regard to oedema (scale 0-3), scabs (yes/no), exudate (yes/no), hematoma (yes/no), dermatitis (yes/no), and aspect of the wound (dry/humid). RESULTS There was no significant difference between the treatment and control groups in the variables evaluated three and seven days after surgery. However, oedema reduced significantly in the group treated with acupuncture at seven days compared to three days after surgery, possibly due the fact that there was more oedema in the treatment group at day three (although this difference was nor significant between groups). CONCLUSIONS The use of a single acupuncture treatment right after surgery in dogs did not appear to have any beneficial effects in surgical wound healing.
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Affiliation(s)
- Erja E Saarto
- Faculty of Veterinary Medicine, Department of Equine and Small Animal Medicine, P.O. Box 57, FI-00014 University of Helsinki, Finland, Europe
- Pieneläinvastaanotto, Torniomäentie 30, 45120 Kouvola, Finland, Europe
- Department of Veterinary Surgery and Anaesthesiology of the School of Veterinary Medicine and Animal Science of São Paulo State University, Brazil
| | - Anna K Hielm-Björkman
- Faculty of Veterinary Medicine, Department of Equine and Small Animal Medicine, P.O. Box 57, FI-00014 University of Helsinki, Finland, Europe
| | - Khadije Hette
- Department of Veterinary Surgery and Anaesthesiology of the School of Veterinary Medicine and Animal Science of São Paulo State University, Brazil
| | - Erja K Kuusela
- Faculty of Veterinary Medicine, Department of Equine and Small Animal Medicine, P.O. Box 57, FI-00014 University of Helsinki, Finland, Europe
| | - Cláudia Valéria S Brandão
- Department of Veterinary Surgery and Anaesthesiology of the School of Veterinary Medicine and Animal Science of São Paulo State University, Brazil
| | - Stélio PL Luna
- Department of Veterinary Surgery and Anaesthesiology of the School of Veterinary Medicine and Animal Science of São Paulo State University, Brazil
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Watts EJ, Rose MT. Platelet-derived growth factor acts via both the Rho-kinase and p38 signaling enzymes to stimulate contraction in an in vitro model of equine wound healing. Domest Anim Endocrinol 2010; 38:253-9. [PMID: 20036481 DOI: 10.1016/j.domaniend.2009.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 10/20/2009] [Accepted: 11/12/2009] [Indexed: 11/17/2022]
Abstract
Horses are more prone to complications in the wound healing process than other species, and problems such as chronic inflammation, delayed epithelialization, poor wound contraction, and exuberant granulation tissue are commonly seen, particularly in wounds on the distal limbs. In comparison, wounds of the oral mucosa heal rapidly in a scarless fashion with a high degree of wound contraction. The effect of platelet-derived growth factor BB (PDGF), insulin-like growth factor (IGF)-1, and transforming growth factor beta1 (TGFbeta1) on the contraction of a fibroblast-populated collagen matrix (FPCM) as a model of equine wound contraction was investigated using equine oral fibroblasts. The fibroblasts were embedded into floating FPCM and treated with PDGF, IGF-1, and TGFbeta1. The surface areas of the FPCM were determined daily for 5 d. Platelet-derived growth factor significantly stimulated the contraction of the FPCM at an optimal concentration of 10 ng/mL (P=0.025). Insulin-like growth factor-1 and TGFbeta1 did not significantly affect the contraction of the FPCM relative to the control. To elucidate the mechanisms by which PDGF stimulated contraction of FPCM, the Rho-kinase and p38 cell signaling pathways were blocked, resulting in a significant inhibition (P<0.001) of PDGF-stimulated contraction. Platelet-derived growth factor BB is a potent stimulator of fibroblast migration, and hence the FPCM contraction generated here is probably a result of its effects on cell migration. The results of the present experiment suggest that this effect is stimulated via both the Rho-kinase and p38 signaling pathways in equine oral fibroblasts.
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Affiliation(s)
- E J Watts
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, Ceredigion, United Kingdom.
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Effects of platelet-rich plasma (PRP) on cutaneous regeneration and wound healing in dogs treated with dexamethasone. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s00580-010-0972-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rossi-Schneider TR, Verli FD, Marinho SA, Yurgel LS, De Souza MAL. Study of intussusceptive angiogenesis in inflammatory regional lymph nodes by scanning electron microscopy. Microsc Res Tech 2010; 73:14-9. [PMID: 19526518 DOI: 10.1002/jemt.20747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of the present study was to verify the occurrence of intussusceptive angiogenesis in blood vessels from submandibular lymph nodes responsible for lymphatic drainage of the tongue. A surgical wound inflicted on the ventral tongue of male Wistar rats and submandibular regional lymph nodes were evaluated at different postoperative periods. Scanning electron microscopy (SEM) was used to observe 123 lymph nodes at times 2, 3, 7, 10, 14, and 21 postoperative days. During the analysis of the vascular models with SEM, intussusceptive angiogenesis was observed in all groups evaluated. This was more extensive on the second and third postoperative days (83.33% and 80%, respectively), representing in these groups the expansion of the vascular chain of lymph nodes. At 21 postoperative days, intussusceptive angiogenesis (42.85%) was suggestive of vascular remodeling.
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Affiliation(s)
- Tíssiana Rachel Rossi-Schneider
- School of Dentistry, Morphological Science Department, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
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Silveira A, Koenig JB, Arroyo LG, Trout D, Moens NMM, LaMarre J, Brooks A. Effects of unfocused extracorporeal shock wave therapy on healing of wounds of the distal portion of the forelimb in horses. Am J Vet Res 2010; 71:229-34. [DOI: 10.2460/ajvr.71.2.229] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Dart AJ, Perkins NR, Dart CM, Jeffcott LB, Canfield P. Effect of bandaging on second intention healing of wounds of the distal limb in horses. Aust Vet J 2009; 87:215-8. [DOI: 10.1111/j.1751-0813.2009.00428.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Occasionally, the bovine practitioner is presented situations requiring application of techniques regarding wound repair and healing. Less commonly encountered in bovine practice than equine practice for example, principles and management of traumatic wound healing should be regarded as similar. Frequently, bovine practitioners need to apply knowledge of healing principles when wounds are surgically induced during horn and mass removal. Consideration of surgical approach, tension-relieving techniques, and dermal transposition flaps (see the ocular surgery article by Schulz in this issue) can be applied effectively in bovine practice.
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Affiliation(s)
- Matt D Miesner
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, 1800 Dennison Avenue, Manhattan, KS 66506, USA.
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Abramo F, Argiolas S, Pisani G, Vannozzi I, Miragliotta V. Effect of a hydrocolloid dressing on first intention healing surgical wounds in the dog: a pilot study. Aust Vet J 2008; 86:95-9. [PMID: 18304046 DOI: 10.1111/j.1751-0813.2007.00243.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the efficacy of a hydrocolloid dressing for the treatment of surgical wounds in dogs. METHODS Six healthy young female dogs of medium size and different breed underwent ovariohysterectomy. Histological evaluation was performed on biopsies taken from the edges of the wounds at day 7. The dressing was applied on one half of the wound according to manufacturer's instructions; the second half served as control. Biopsy specimens were fixed in a 10% formalin buffered solution pH 7.4, paraffin embedded and stained with haematoxylin and eosin. For clinical assessment, the presence and quality of exudate, erythema of the surrounding area, swelling and correct apposition of the wound margins were evaluated. RESULTS The hydrocolloid dressing was easy to use. The clinical quality of the treated skin wounds was superior to the non-treated ones. Comparison of histological features between treated and untreated wounds showed a more regular organisation of the granulation tissue in the treated wounds, with fibroblasts being aligned parallel to the overlying epidermis. The number of inflammatory cells and the extension of granulation tissue were less prominent and less widespread in treated compared to untreated wounds. CONCLUSION The dressing performed very well in terms of adhesiveness and flexibility. It was useful in the management of surgical wounds to avoid contamination and ameliorate the epithelialisation rate and granulation tissue morphology of the surgical scar.
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Affiliation(s)
- F Abramo
- Department of Animal Pathology, Department of Veterinary Clinic, University of Pisa, 56124 Pisa, Italy
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Argüelles D, Carmona JU, Pastor J, Iborra A, Viñals L, Martínez P, Bach E, Prades M. Evaluation of single and double centrifugation tube methods for concentrating equine platelets. Res Vet Sci 2006; 81:237-45. [PMID: 16969921 DOI: 10.1016/j.rvsc.2005.12.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The aim of this study was to evaluate single and double centrifugation tube methods for concentrating equine platelets. Whole blood samples were collected from clinically normal horses and processed by use of single and double centrifugation tube methods to obtain four platelet concentrates (PCs): PC-A, PC-B, PC-C, and PC-D, which were analyzed using a flow cytometry hematology system for hemogram and additional platelet parameters (mean platelet volume, platelet distribution width, mean platelet component concentration, mean platelet component distribution width). Concentrations of transforming growth factor beta 1 (TGF-beta(1)) were determined in all the samples. Platelet concentrations for PC-A, PC-B, PC-C, and PC-D were 45%, 44%, 71%, and 21% higher, respectively, compared to the same values for citrated whole blood samples. TGF-beta(1) concentrations for PC-A, PC-B, PC-C, and PC-D were 38%, 44%, 44%, and 37% higher, respectively, compared to citrated whole blood sample values. In conclusion, the single and double centrifugation tube methods are reliable methods for concentrating equine platelets and for obtaining potentially therapeutic TGF-beta(1) levels.
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Affiliation(s)
- D Argüelles
- Department of Animal Medicine and Surgery, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Spain
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