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Gandini M, Cerullo A, Giusto G. Pectin-honey hydrogel to prevent laparotomy surgical site infection in horses: A pilot study. J Equine Vet Sci 2024; 139:105128. [PMID: 38852926 DOI: 10.1016/j.jevs.2024.105128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 05/23/2024] [Accepted: 06/07/2024] [Indexed: 06/11/2024]
Abstract
Surgical site infection (SSI) is a common complication after celiotomy in horses, leading to increased morbidity and costs. Increased concern about antibiotic resistance justifies evaluation of alternative preventive approaches, such a Manuka honey which has displayed antimicrobial properties. Pectin-Honey Hydrogels (PHH), composed by Manuka honey and pectin provide a moist wound environment and microbial growth inhibition. The aim of the study was to evaluate the effectiveness of PHHs in preventing SSI in horses subjected to emergency laparotomy. Horses undergoing laparotomy were evaluated. Horses were randomly divided into two groups: Group 1 received PHH application onto the sutured linea alba before skin closure, while Group 2 received no treatment. Horses with postoperative antimicrobial administration or survival of less than 5 days were excluded. The incidence of SSIs was reported as percentages and compared between groups. Out of 44 horses enrolled in the study, only thirty-six were ultimately included. Exclusions occurred either due to death before 5 days postoperatively (2 horses) or the administration of postoperative antimicrobials (6 horses). The median length of hospitalization was 9 days (range 8-14 days). The overall occurrence of SSI was 19.4 %. One out of eighteen horses (5.5 %) in Group 1 and 6 out of 18 (33.3 %) horses in Group 2 developed SSI. Group 2 had an 8.5-fold increased risk of SSI (p = 0.035, OR = 8.5, 95 % CI. 0.9-80.07). No macroscopically visible adverse reactions were associated with PHH. PHH placed at the abdominal incision during surgery was safe and reduced the prevalence of SSI in horses.
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Affiliation(s)
- Marco Gandini
- Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095, Italy
| | - Anna Cerullo
- Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095, Italy
| | - Gessica Giusto
- Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095, Italy.
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Bhowmik S, Baral B, Rit T, Jha HC, Das AK. Design and synthesis of a nucleobase functionalized peptide hydrogel: in vitro assessment of anti-inflammatory and wound healing effects. NANOSCALE 2024; 16:13613-13626. [PMID: 38958597 DOI: 10.1039/d4nr01149j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Over the past several years, a significant increase in the expanding field of biomaterial sciences has been observed due to the development of biocompatible materials based on peptide derivatives that have intrinsic therapeutic potential. In this report, we synthesized nucleobase functionalized peptide derivatives (NPs). Hydrogelation in the synthesized NPs was induced by increasing their hydrophobicity with an aromatic moiety. The aggregation behavior of the NPs was analyzed by performing molecular dynamics simulations and DOSY NMR experiments. We performed circular dichroism (CD), thioflavin-T binding and PXRD to characterize the supramolecular aggregation in the NP1 hydrogel. The mechanical strength of the NP1 hydrogel was tested by performing rheological experiments. TEM and SEM experiments were performed to investigate the morphology of the NP1 hydrogel. The biocompatibility of the newly synthesized NP1 hydrogel was investigated using McCoy and A549 cell lines. The hemolytic activity of the NP1 hydrogel was examined in human blood cells. The stability of the newly formed NP1 hydrogel was examined using proteinase K and α-chymotrypsin. The NP1 hydrogel was used for in vitro wound healing. Western blotting, qRT-PCR and DCFDA assay were performed to determine the anti-inflammatory activity of the NP1 hydrogel. The synthesized NP1 hydrogel also exhibits antibacterial efficacy.
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Affiliation(s)
- Sourav Bhowmik
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
| | - Budhadev Baral
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Tanmay Rit
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
| | - Hem Chandra Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Apurba K Das
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
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Ribeiro G, Carvalho L, Borges J, Prazeres J. The Best Protocol to Treat Equine Skin Wounds by Second Intention Healing: A Scoping Review of the Literature. Animals (Basel) 2024; 14:1500. [PMID: 38791717 PMCID: PMC11117370 DOI: 10.3390/ani14101500] [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: 03/20/2024] [Revised: 05/06/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
Equine skin wound treatment continues to be a challenge for veterinarians. Despite being a frequent practice, it remains difficult to choose an evidence-based treatment protocol. This study aimed to comprehensively explore the literature and provide a scoping review of therapeutic strategies for equine skin wounds and identify knowledge gaps and opportunities for future research. This review was conducted using specific criteria to select literature that described methods to manage second intention wound healing. After removing duplicates and screening papers for suitability, 81 manuscripts were included for data extraction. Of these, 59 articles were experimental studies, 10 were case reports, 9 were case series, and 3 were clinical studies. The most frequent wound location was the distal limbs. Macroscopic assessment was the main tool used to evaluate treatment effectiveness. All of the case reports, case series, and clinical studies reported positive outcomes with regard to the treatment used, while only 36% of the experimental studies found significant healing improvement in treated wounds compared to control groups. It was found that there are many treatments that have exhibited controversial results, and there exists a lack of evidence for the adoption of specific treatment protocols.
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Affiliation(s)
- Gesiane Ribeiro
- Faculty of Veterinary Medicine, Lusófona University, Campo Grande 376, 1749-024 Lisbon, Portugal; (L.C.); (J.B.); (J.P.)
- Veterinary and Animal Research Centre (CECAV), Faculty of Veterinary Medicine, Lusófona University—Lisbon University Centre, Campo Grande 376, 1749-024 Lisbon, Portugal
| | - Lúcia Carvalho
- Faculty of Veterinary Medicine, Lusófona University, Campo Grande 376, 1749-024 Lisbon, Portugal; (L.C.); (J.B.); (J.P.)
| | - João Borges
- Faculty of Veterinary Medicine, Lusófona University, Campo Grande 376, 1749-024 Lisbon, Portugal; (L.C.); (J.B.); (J.P.)
- MED—Mediterranean Institute for Agriculture, Environment and Development, Évora University, Pólo da Mitra Apartado 94, 7006-554 Évora, Portugal
| | - José Prazeres
- Faculty of Veterinary Medicine, Lusófona University, Campo Grande 376, 1749-024 Lisbon, Portugal; (L.C.); (J.B.); (J.P.)
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Charlotte C. P, Benoit B, Olivier M. L. The effects of a synthetic epidermis spray on secondary intention wound healing in adult horses. PLoS One 2024; 19:e0299990. [PMID: 38451976 PMCID: PMC10919598 DOI: 10.1371/journal.pone.0299990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 02/19/2024] [Indexed: 03/09/2024] Open
Abstract
OBJECTIVES To evaluate secondary intention wound healing in the horse's limbs when treated with the synthetic epidermis spray (Novacika®, Cohesive S.A.S, France) or with a standard bandaging technique. METHODS Six Standardbred mares were included in the study. Four 2.5 x 2.5 cm full-thickness skin wounds were created on each thoracic limb. Two wounds were located on the dorsoproximal aspect of the cannon bone and the other two at the dorsoproximal aspect of the fetlock. Six hours after creation, wounds were randomly treated with synthetic epidermis spray or standard bandaging. The wounds were assessed every 4 days by gross visual assessment and using a 3D imaging camera. Analysis was performed with a 3D imaging application. RESULTS Out of 46 wounds, 22 showed exuberant granulation tissue and were part of the standard bandaging group. Whether the wounds were treated with synthetic epidermis spray or standard bandaging, the time for healing was the same. CONCLUSION The synthetic epidermis spray studied in this model has allowed healing without the production of exuberant granulation tissue but did not reduce the median wound healing time compared to a standard bandaging technique. The synthetic epidermis spray is potentially an interesting alternative for the management of secondary intention wound healing of superficial and non-infected distal limb wounds in adult horses on economical and practical aspects. However, all statistical inference (p-values especially) must be interpreted with caution, given the size of the sample.
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Affiliation(s)
- Paindaveine Charlotte C.
- Unité ICE-Groupe de Recherche en Médecine et Rééducation des Equidés de Sport (GREMERES), Centre for Equine Health, Ecole Nationale Vétérinaire de Lyon, VetAgro Sup, Université de Lyon, Lyon, France
| | - Bihin Benoit
- Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium
| | - Lepage Olivier M.
- Unité ICE-Groupe de Recherche en Médecine et Rééducation des Equidés de Sport (GREMERES), Centre for Equine Health, Ecole Nationale Vétérinaire de Lyon, VetAgro Sup, Université de Lyon, Lyon, France
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Iribarne A, Palma MB, Andrini L, Riccillo F, Rodriguez D, Casella M, Garay F, Zabala JS, Mazza L, Muro A, Buero G, Miriuka SG, Carosella E, García MN. Therapeutic Potential in Wound Healing of Allogeneic Use of Equine Umbilical Cord Mesenchymal Stem Cells. Int J Mol Sci 2024; 25:2350. [PMID: 38397024 PMCID: PMC10889822 DOI: 10.3390/ijms25042350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Wound healing after skin injury is a complex process, particularly in equines where leg wounds are prevalent and their repair is complicated due to the anatomical characteristics. Conventional treatments are not effective enough. The umbilical cord offers an unlimited source of adult mesenchymal stem cells (ucMSCs) from Wharton's jelly tissue. The present study aims to demonstrate the safety and therapeutic potential of the allogeneic use of equine ucMSCs (e-ucMSCs) in the healing of severe equine leg wounds. The methods employed were the isolation, culture and expansion of e-ucMSCs. Flow cytometry and a PCR assay were used for cell characterization. This study included an immunomodulation assay, a murine pre-clinical trial and the first phase of an equine clinical trial. Our results showed that e-ucMSCs express a functional HLA-G homolog, EQMHCB2. In the immunomodulation assay, the e-ucMSCs inhibited the proliferation of activated equine peripheral blood mononuclear cells (e-PBMCs). In the murine pre-clinical trial, e-ucMSCs reduced healing time by 50%. In the equine clinical trial, the injection of e-ucMSCs into severe leg lesions improved the closure time and quality of the tissues involved, regenerating them without fibrous tissue scar formation. In conclusion, the results of this study suggest that e-ucMSCs can be used allogeneically for wound healing by creating a tolerogenic environment.
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Affiliation(s)
- Ailén Iribarne
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina; (A.I.); (M.B.P.); (L.A.); (F.R.)
| | - María Belén Palma
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina; (A.I.); (M.B.P.); (L.A.); (F.R.)
- Instituto de Neurociencias (INEU), Fundación para la Lucha contra Enfermedades Neurológicas de la Infancia-Consejo Nacional de Investigaciones Científicas y Técnicas (FLENI-CONICET) Escobar, Buenos Aires CP B1625, Argentina;
| | - Laura Andrini
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina; (A.I.); (M.B.P.); (L.A.); (F.R.)
| | - Fernando Riccillo
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina; (A.I.); (M.B.P.); (L.A.); (F.R.)
| | - Delfina Rodriguez
- Centro de Reproducción Equina La Adela, Chascomús, Buenos Aires CP 7130, Argentina
| | - Martín Casella
- División Remonta Haras La Teruca, Buenos Aires B1900, Argentina
| | - Felipe Garay
- División Remonta Haras La Teruca, Buenos Aires B1900, Argentina
- Dirección Veterinaria, Policía de la Provincia de Buenos Aires, Buenos Aires B1904, Argentina
| | - Julieta Spoto Zabala
- División Remonta Haras La Teruca, Buenos Aires B1900, Argentina
- Dirección Veterinaria, Policía de la Provincia de Buenos Aires, Buenos Aires B1904, Argentina
| | - Leandro Mazza
- Cátedra de Anatomía B, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina;
| | - Adriana Muro
- Laboratorio de Análisis Clínicos Veterinarios, La Plata, Buenos Aires CP 1900, Argentina
| | - Guillermo Buero
- Sanatorio Mater Dei, Ciudad Autónoma de Buenos Aires, Buenos Aires CP C1425, Argentina;
| | - Santiago G. Miriuka
- Instituto de Neurociencias (INEU), Fundación para la Lucha contra Enfermedades Neurológicas de la Infancia-Consejo Nacional de Investigaciones Científicas y Técnicas (FLENI-CONICET) Escobar, Buenos Aires CP B1625, Argentina;
| | - Edgardo Carosella
- Commissariat a l’Energie Atomique et aux Energies Alternatives (CEA), Service de Recherche en Hemato-Immunologie (SRHI), Saint-Louis Hospital, 75010 Paris, France;
- Hopital Saint-Louis, IUH, Université Paris Diderot, Sorbonne Paris Cite, 75010 Paris, France
| | - Marcela N. García
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires CP 1900, Argentina; (A.I.); (M.B.P.); (L.A.); (F.R.)
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Labens R, Raidal S, Borgen-Nielsen C, Pyecroft S, Pant SD, De Ridder T. Wound healing of experimental equine skin wounds and concurrent microbiota in wound dressings following topical propylene glycol gel treatment. Front Vet Sci 2023; 10:1294021. [PMID: 38155761 PMCID: PMC10752953 DOI: 10.3389/fvets.2023.1294021] [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: 09/14/2023] [Accepted: 11/23/2023] [Indexed: 12/30/2023] Open
Abstract
Introduction Topical wound treatments rely on carrier formulations with little to no biological impact. The potential for a common vehicle, a propylene glycol (PG) gel, to affect wound healing measures including microbiota is not known. Microbiome characterization, based on next generation sequencing methods is typically performed on tissue or directly obtained wound fluid samples. The utility for primary wound dressings to characterize equine wound microbiota in the context of topical treatments is currently unknown. This investigation reports the topical effect of an 80% PG based gel on wound healing and microbiota in wound dressings. Methods Experiments were performed in six mature horses utilizing a surgical, distal limb wound model, histology of sequential wound biopsies, photographic wound measurements and microbiota profiling via 16s rRNA sequencing of wound dressing samples. Experimental wounds were surveyed for 42 days and either treated (Day 7, 14, 21 and 28; at 0.03 ml/cm2) or unexposed to the PG gel. Wound surface area, relative and absolute microbial abundances, diversity indices and histologic parameters were analyzed in the context of the experimental group (treatment; control) using qualitative or quantitative methods depending on data characteristics. Results Compared to controls, treatment slowed the wound healing rate (17.17 ± 4.27 vs. 18.56 ± 6.3 mm2/day), delayed the temporal decline of polymorphonucleated cells in wound beds and operational taxonomic units (OTU) in wound dressings and lowered alpha-diversity indices for microbiota in primary wound dressing. Relative abundances of OTUs were in line with those previously reported for equine wounds. Clinical outcomes 42 days post wounding were considered similar irrespective of PG gel exposure. Discussion Results highlight the potential for vehicle exposure to alter relevant wound outcome measures, imposing the need for stringent experimental control measures. Primary wound dressings may represent an alternate sample source for characterization of the wound microbiome alleviating the need for additional interventions. Further studies are warranted to contrast the microbiome in wound dressings against that present on wound surfaces to conclude on the validity of this approach.
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Affiliation(s)
- Raphael Labens
- School of Agricultural, Environmental and Veterinary Sciences, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, Australia
- QBiotics Group Ltd., Yungaburra, QLD, Australia
| | - Sharanne Raidal
- School of Agricultural, Environmental and Veterinary Sciences, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Cathrine Borgen-Nielsen
- School of Agricultural, Environmental and Veterinary Sciences, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Stephen Pyecroft
- School of Animal and Veterinary Sciences, Faculty of Sciences, Engineering and Technology, University of Adelaide, Roseworthy, SA, Australia
| | - Sameer D. Pant
- School of Agricultural, Environmental and Veterinary Sciences, Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, Australia
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW, Australia
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Shu QH, Zuo RT, Chu M, Shi JJ, Ke QF, Guan JJ, Guo YP. Fiber-reinforced gelatin/β-cyclodextrin hydrogels loaded with platelet-rich plasma-derived exosomes for diabetic wound healing. BIOMATERIALS ADVANCES 2023; 154:213640. [PMID: 37804684 DOI: 10.1016/j.bioadv.2023.213640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/19/2023] [Accepted: 09/24/2023] [Indexed: 10/09/2023]
Abstract
Diabetic complications with high-glucose status (HGS) cause the dysregulated autophagy and excessive apoptosis of multiple-type cells, leading to the difficulty in wound self-healing. Herein, we firstly developed fiber-reinforced gelatin (GEL)/β-cyclodextrin (β-CD) therapeutic hydrogels by the modification of platelet-rich plasma exosomes (PRP-EXOs). The GEL fibers that were uniformly dispersed within the GEL/β-CD hydrogels remarkably enhanced the compression strengths and viscoelasticity. The PRP-EXOs were encapsulated in the hydrogels via the covalent crosslinking between the PRP-EXOs and genipin. The diabetic rat models demonstrated that the GEL/β-CD hydrogels and PRP-EXOs cooperatively promoted diabetic wound healing. On the one hand, the GEL/β-CD hydrogels provided the biocompatible microenvironments and active components for cell adhesion, proliferation and skin tissue regeneration. On the other hand, the PRP-EXOs in the therapeutic hydrogels significantly activated the autophagy and inhibited the apoptosis of human umbilical vein endothelial cells (HUVECs) and human skin fibroblasts (HSFs). The activation of autophagy and inhibition of apoptosis in HUVECs and HSFs induced the blood vessel creation, collagen formation and re-epithelialization. Taken together, this work proved that the incorporation of PRP-EXOs in a wound dressing was an effective strategy to regulate autophagy and apoptosis, and provide a novel therapeutic platform for diabetic wound healing.
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Affiliation(s)
- Qiu-Hao Shu
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Rong-Tai Zuo
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Min Chu
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jing-Jing Shi
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Qin-Fei Ke
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jun-Jie Guan
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Ya-Ping Guo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
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Bardhan NM, Radisic M, Nurunnabi M. Bioinspired Materials for Wearable Diagnostics and Biosensors. ACS Biomater Sci Eng 2023; 9:2015-2019. [PMID: 37153960 DOI: 10.1021/acsbiomaterials.3c00348] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
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9
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Vizely K, Wagner KT, Mandla S, Gustafson D, Fish JE, Radisic M. Angiopoietin-1 derived peptide hydrogel promotes molecular hallmarks of regeneration and wound healing in dermal fibroblasts. iScience 2023; 26:105984. [PMID: 36818306 PMCID: PMC9932487 DOI: 10.1016/j.isci.2023.105984] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 10/12/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
By providing an ideal environment for healing, biomaterials can be designed to facilitate and encourage wound regeneration. As the wound healing process is complex, there needs to be consideration for the cell types playing major roles, such as fibroblasts. As a major cell type in the dermis, fibroblasts have a large impact on the processes and outcomes of wound healing. Prevopisly, conjugating the angiopoietin-1 derived Q-peptide (QHREDGS) to a collagen-chitosan hydrogel created a biomaterial with in vivo success in accelerating wound healing. This study utilized solvent cast Q-peptide conjugated collagen-chitosan seeded with fibroblast monolayers to investigate the direct impact of the material on this major cell type. After 24 h, fibroblasts had a significant change in release of anti-inflammatory, pro-healing, and ECM deposition cytokines, with demonstrated immunomodulatory effects on macrophages and upregulated expression of critical wound healing genes.
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Affiliation(s)
- Katrina Vizely
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada
| | - Karl T. Wagner
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Serena Mandla
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Dakota Gustafson
- Toronto General Hospital Research Institute, University Health Network, Toronto,ON M5G 2C4, Canada,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Jason E. Fish
- Toronto General Hospital Research Institute, University Health Network, Toronto,ON M5G 2C4, Canada,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Milica Radisic
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada,Toronto General Hospital Research Institute, University Health Network, Toronto,ON M5G 2C4, Canada,Corresponding author
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10
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Albahrawy M, Abouelnasr K, Mosbah E, Zaghloul A, Abass M. Acellular bovine pericardium as a biological dressing for treatment of cutaneous wounds of the distal limb in donkeys (Equus Asinus). Vet Res Commun 2022; 47:587-597. [DOI: 10.1007/s11259-022-10014-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022]
Abstract
AbstractThis research was performed to determine the impact of repeated topical dressing with acellular bovine pericardium (ABP) on healing distal limb wounds in donkeys. Twelve male clinically healthy donkeys were subjected to general anesthesia, and full-thickness wounds of six cm2 (2 × 3 cm) were created on the middle dorsolateral surface of the metacarpi. Two defects were made on each donkey’s forelimbs; the right limb was considered a control wound, and the left one was considered a treated wound. Moreover, the control wounds were irrigated with saline every three days postoperatively and bandaged with a standard dressing. The treated wounds were covered with ABP dressings. The ABP dressing was reapplied thrice at 7-, 14- and 21-days post-wound induction. In addition, the wound healing process was monitored clinically, histopathologically, and immunohistochemically of tissue as growth factor-β1, epidermal growth factor receptor, and vascular endothelial growth factor. Besides, the gene expression profile of angiogenic and myofibroblastic genes was applied as vascular endothelial growth factor-A, collagen type 3α1, fibroblast growth factor 7, and the transforming growth factor-β1.The results revealed that the wounds treated with ABP healed more quickly than the control wounds. Additionally, the mean days required for healing were significantly shorter in the ABP-treated wounds (p < 0.05; 69.5 ± 1.6) compared to control wounds (86.3 ± 3). Furthermore, immunohistochemical and gene expression analyses were significantly improved in ABP wounds than in control wounds. In conclusion, ABP is considered a natural biomaterial and promotes the healing of distal limb wounds in donkeys if applied weekly during the first three-week post-wound induction.
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11
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Sparks HD, Mandla S, Vizely K, Rosin N, Radisic M, Biernaskie J. Application of an instructive hydrogel accelerates re-epithelialization of xenografted human skin wounds. Sci Rep 2022; 12:14233. [PMID: 35987767 PMCID: PMC9392759 DOI: 10.1038/s41598-022-18204-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/08/2022] [Indexed: 11/27/2022] Open
Abstract
Poor quality (eg. excessive scarring) or delayed closure of skin wounds can have profound physical and pyschosocial effects on patients as well as pose an enormous economic burden on the healthcare system. An effective means of improving both the rate and quality of wound healing is needed for all patients suffering from skin injury. Despite wound care being a multi-billion-dollar industry, effective treatments aimed at rapidly restoring the skin barrier function or mitigating the severity of fibrotic scar remain elusive. Previously, a hydrogel conjugated angiopoietin-1 derived peptide (QHREDGS; Q-peptide) was shown to increase keratinocyte migration and improve wound healing in diabetic mice. Here, we evaluated the effect of this Q-Peptide Hydrogel on human skin wound healing using a mouse xenograft model. First, we confirmed that the Q-Peptide Hydrogel promoted the migration of adult human keratinocytes and modulated their cytokine profile in vitro. Next, utilizing our human to mouse split-thickness skin xenograft model, we found improved healing of wounded human epidermis following Q-Peptide Hydrogel treatment. Importantly, Q-Peptide Hydrogel treatment enhanced this wound re-epithelialization via increased keratinocyte migration and survival, rather than a sustained increase in proliferation. Overall, these data provide strong evidence that topical application of QHREDGS peptide-modified hydrogels results in accelerated wound closure that may lead to improved outcomes for patients.
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Affiliation(s)
- Holly D Sparks
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
| | - Serena Mandla
- Toronto General Research Institute, University of Toronto, Toronto, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada
| | - Katrina Vizely
- Toronto General Research Institute, University of Toronto, Toronto, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada
| | - Nicole Rosin
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
| | - Milica Radisic
- Toronto General Research Institute, University of Toronto, Toronto, Canada.
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada.
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada.
| | - Jeff Biernaskie
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada.
- Alberta Children's Hospital Research Institute, Calgary, AB, Canada.
- Hotchkiss Brain Institute, Calgary, AB, Canada.
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Biomechanics in ascending aortic aneurysms correlate with tissue composition and strength. JTCVS OPEN 2022; 9:1-10. [PMID: 36003475 PMCID: PMC9390473 DOI: 10.1016/j.xjon.2021.12.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022]
Abstract
Objective This study correlates low strain tangential modulus (LTM) and transition zone onset (TZo) stress, biomechanical parameters that occur within the physiological range of stress seen in vivo, with tissue strength and histopathologic changes in aneurysmal ascending aortic tissue. Method Ascending aortic aneurysm tissue samples were collected from 41 patients undergoing elective resection. Samples were subjected to planar biaxial testing to quantify LTM and TZo. These were then correlated with strength assessed from uniaxial testing and with histopathologic quantification of pathologic derangements in elastin, collagen, and proteoglycan (PG). Results Decreased LTM and TZo were correlated with reduced strength (P < .05), PG content (P < .05), and elastin content (P < .05). Reduced TZo also was correlated with increased elastin fragmentation (P < .05). Conclusions LTM and TZo are correlated with common biomechanical and histopathologic alterations in ascending aortic aneurysm tissue that are thought to relate to the risk of acute aortic syndromes. LTM and TZo are measured under conditions approximating in vivo physiology and have the potential to be obtained noninvasively using medical imaging techniques. Therefore, they represent parameters that warrant future study as potential contributors to our growing knowledge of pathophysiology, disease progression, and risk stratification of aortic disease.
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Anantama NA, Du Cheyne C, Martens A, Roth SP, Burk J, De Spiegelaere W, Michler JK. The granulation (t)issue: A narrative and scoping review of basic and clinical research of the equine distal limb exuberant wound healing disorder. Vet J 2022; 280:105790. [PMID: 35093532 DOI: 10.1016/j.tvjl.2022.105790] [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: 06/01/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 10/19/2022]
Abstract
Exuberant granulation tissue (EGT) is often observed during second intention wound healing in horses. Despite its impact on wound care, the basic mechanisms leading to EGT are still unclear and effective strategies to prevent and/or treat EGT are lacking. The development of EGT is a poorly understood, multifactorial process involving hyperproliferating fibroblasts and malfunctional differentiation of keratinocytes, suboptimal wound contraction, dysfunctional vascularisation, and chronic inflammation. To consolidate and describe basic and clinical research literature on EGT and to identify knowledge gaps and opportunities for future research, a search was systematically conducted using predefined search terms. Subsequently, a scoping review was conducted using specific criteria to select the peer-reviewed literature that described methods to treat and/or prevent EGT. Proposed mechanisms of effects as well as results and main conclusions were extracted and tabulated. The systematic search resulted in 1062 publications in PubMed and 767 in Web of Science. Twenty additional studies were later included. Of these, 327 studies were reviewed for the narrative review on basic research and 35 controlled clinical trials were eligible for the scoping review. All 35 studies were conducted in university hospitals, and all but one involved surgically induced non-infected wounds. The study population was predominantly horses (n = 230) with a small number of ponies (n = 18) and donkeys (n = 14). In conclusion, there remains a strong need for evidence-based recommendations on EGT treatment, preferably using multi-centre studies that represent the general population of horses, include higher numbers of animals, and are performed in naturally occurring wounds. This narrative and scoping review also emphasises the importance of incorporating basic research knowledge in the study design of clinical trials.
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Affiliation(s)
- Nadia Ayurini Anantama
- Institute of Veterinary Anatomy, Histology and Embryology, Leipzig University, An den Tierkliniken 43, 04103 Leipzig, Germany
| | - Charis Du Cheyne
- Department of Morphology, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Ann Martens
- Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Susanne Pauline Roth
- Veterinary Teaching Hospital, Department for Horses, University of Leipzig, An den Tierkliniken 21, 04103 Leipzig, Germany
| | - Janina Burk
- Equine Clinic (Surgery, Orthopedics), Giessen University, Frankfurter Str. 108, 35392 Gießen, Germany
| | - Ward De Spiegelaere
- Department of Morphology, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Jule Kristin Michler
- Institute of Veterinary Anatomy, Histology and Embryology, Leipzig University, An den Tierkliniken 43, 04103 Leipzig, Germany.
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14
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Du Cheyne C, Martens A, De Spiegelaere W. High Numbers of CD163-Positive Macrophages in the Fibrotic Region of Exuberant Granulation Tissue in Horses. Animals (Basel) 2021; 11:2728. [PMID: 34573694 PMCID: PMC8464979 DOI: 10.3390/ani11092728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/31/2021] [Accepted: 09/15/2021] [Indexed: 12/21/2022] Open
Abstract
Exuberant granulation tissue (EGT) is a frequently encountered complication during second intention healing in equine distal limb wounds. Although it is still unknown what exactly triggers the formation of this tissue, previous research has revealed a persistent inflammatory response in these wounds. In this preliminary study we examined this inflammatory response in EGT-developing wounds as well as in experimental induced wounds. Immunohistological stainings were performed to detect primary inflammatory immune cells (MAC387 staining) as well as pro-resolution immune cells (CD163 staining). Our results show a significantly higher amount of MAC387+ and CD163+ cells in the fibrotic regions of EGT compared with the 19-day-old experimental wounds. This persistent high amount of fibrosis-promoting CD163+ cells in EGT suggests that the wound healing processes in EGT-developing wounds are arrested at the level of the proliferation phase.
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Affiliation(s)
- Charis Du Cheyne
- Department of Morphology, Ghent University, 9820 Merelbeke, Belgium;
| | - Ann Martens
- Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, 9820 Merelbeke, Belgium;
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15
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Wound dressings: curbing inflammation in chronic wound healing. Emerg Top Life Sci 2021; 5:523-537. [PMID: 34196717 PMCID: PMC8589427 DOI: 10.1042/etls20200346] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/07/2021] [Accepted: 06/10/2021] [Indexed: 12/15/2022]
Abstract
Chronic wounds represent an economic burden to healthcare systems worldwide and a societal burden to patients, deeply impacting their quality of life. The incidence of recalcitrant wounds has been steadily increasing since the population more susceptible, the elderly and diabetic, are rapidly growing. Chronic wounds are characterised by a delayed wound healing process that takes longer to heal under standard of care than acute (i.e. healthy) wounds. Two of the most common problems associated with chronic wounds are inflammation and infection, with the latter usually exacerbating the former. With this in mind, researchers and wound care companies have developed and marketed a wide variety of wound dressings presenting different compositions but all aimed at promoting healing. This makes it harder for physicians to choose the correct therapy, especially given a lack of public quantitative data to support the manufacturers’ claims. This review aims at giving a brief introduction to the clinical need for chronic wound dressings, focusing on inflammation and evaluating how bio-derived and synthetic dressings may control excess inflammation and promote healing.
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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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Pun SH. Reining in the Wound-Healing Response in an Equine Model with a Biomimetic Hydrogel. ACS Biomater Sci Eng 2021; 7:1. [DOI: 10.1021/acsbiomaterials.0c01702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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