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Lessiak U, Pratscher B, Tichy A, Nell B. Bevacizumab Efficiently Inhibits VEGF-Associated Cellular Processes in Equine Umbilical Vein Endothelial Cells: An In Vitro Characterization. Vet Sci 2023; 10:632. [PMID: 37999456 PMCID: PMC10675369 DOI: 10.3390/vetsci10110632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/06/2023] [Accepted: 10/22/2023] [Indexed: 11/25/2023] Open
Abstract
Anti-VEGF agents were found to have clinical implications for the successful treatment of vascular-driven diseases in humans. In this study, a detailed biological characterization of bevacizumab in a variety of in vitro assays was carried out to determine the effect of bevacizumab on equine umbilical vein endothelial cells (EqUVEC). EqUVECs were harvested from umbilical cords of clinically healthy horses and exposed to different concentrations (1, 2, 4, 6, 8 mg/mL) of bevacizumab (Avastin®). Assays concerning the drug's safety (cell viability and proliferation assay) and efficacy (cell tube formation assay, cell migration assay, and Vascular endothelial growth factor (VEGF) expression) were carried out reflecting multiple cellular processes. Bevacizumab significantly decreased VEGF expression at all concentrations over a 72 h period. No cytotoxic effect of bevacizumab on EqUVECs was observed at concentrations of 4 mg/mL bevacizumab or lower. Incubated endothelial cells showed delayed tube formation and bevacizumab efficiently inhibited cell migration in a dose-dependent manner. Bevacizumab potently inhibits VEGF-induced cellular processes and could be a promising therapeutic approach in vascular-driven diseases in horses.
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Affiliation(s)
- Ulrike Lessiak
- Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Barbara Pratscher
- Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Alexander Tichy
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Barbara Nell
- Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
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Regnier A, Landrevie C, Robin MC, Einsweiler D, Douet JY, Raymond-Letron I. Pyogenic granuloma of the cornea in a pony: Uncommon complication of corneal wound healing. Vet Ophthalmol 2023; 26:62-70. [PMID: 36413443 DOI: 10.1111/vop.13041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/31/2022] [Accepted: 11/09/2022] [Indexed: 11/23/2022]
Abstract
A 6-year-old miniature Shetland pony mare was referred for evaluation of a left corneal mass, which developed from the healing tissue of a corneal traumatic ulceration that had occurred 4 weeks previously. On gross examination, a spherical, smooth-surfaced, and pink-colored lesion of about 1 cm in diameter was protruding from the left palpebral fissure. Ophthalmic examination revealed that it was attached to the scar tissue of the cornea, and that one corpora nigra was adherent to the posterior face of corneal wounded area, without sign of uveitis. The remainder of the ophthalmic examination was unremarkable. The mass was excised, and cryotherapy was used as an adjunctive therapy. Histopathology of the resected mass was consistent with a pyogenic granuloma on the basis of radially oriented proliferating capillaries, embedded in immature granulation tissue containing an infiltrate of neutrophils, plasma cells and eosinophils. There were no histological features of malignancy. 2 months after surgery, the ventral part of the fibrotic corneal scar was slightly raised by a pink tissue, suggesting possible recurrence of the initial lesion. A second cryotherapy was performed over the leukoma area. No recurrence has been noted for a follow-up period of more than 25 months. Pyogenic granuloma is a benign proliferative fibrovascular response that typically develops after trauma or surgery. Corneal involvement is rare in humans, and to the authors' knowledge has never been documented in veterinary ophthalmology.
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Affiliation(s)
- Alain Regnier
- CHUVAC, Université de Toulouse, ENVT, Toulouse, France
| | | | | | | | - Jean-Yves Douet
- CHUVAC, Université de Toulouse, ENVT, Toulouse, France.,IHAP, Université de Toulouse, INRAE, ENVT, Toulouse, France
| | - Isabelle Raymond-Letron
- LabHPEC, Université de Toulouse, ENVT, Toulouse, France.,Institut Restore, Université de Toulouse, CNRS U-5070, EFS, ENVT, Inserm U1031, Toulouse, France
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Erkılınç G, Yasan H, Kumbul YÇ, Sivrice ME, Durgun M. Expression of prostate-specific membrane antigen in the neovasculature of primary tumors and lymph node metastasis of laryngeal squamous cell carcinomas. J Pathol Transl Med 2022; 56:134-143. [PMID: 35501674 PMCID: PMC9119807 DOI: 10.4132/jptm.2022.02.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 02/22/2022] [Indexed: 11/17/2022] Open
Abstract
Background Prostate-specific membrane antigen (PSMA) expression is encountered in tumor-associated neovascularization. Methods PSMA-antibody was applied to the paraffin blocks of 51 patients who were diagnosed with squamous cell carcinoma of the larynx and underwent laryngectomy and one who underwent lymph node dissection. The percentage of vascular expression in tumoral and extratumoral stroma and lymph nodes and intensity score in tumoral epithelium were evaluated and divided into groups according to the level of PSMA expression. Final PSMA expression was determined by multiplying intensity and percentage scores. Results The mean age was 61±10 years. Patients with perineural invasion, cartilage invasion, and local invasion exhibited higher PSMA expression scores. Age, tumor differentiation, tumor diameter, perineural invasion, tumor localization, capsular invasion, depth of invasion, surgical margin status, local invasion, nodal metastasis, TNM classification, and stage were similar in high and low PSMA expression groups. There was no PSMA expression in extratumoral vascular stroma. Significantly higher PSMA expression was observed in the vascular endothelium of metastatic lymph nodes compared with reactive lymph nodes. Patients with advanced-stage disease exhibited higher PSMA vascular expression scores compared to those with earlier stages (p<.001). PSMA expression was not correlated with overall survival, disease-specific survival, or disease-free survival (p>.05). Conclusions Our study suggests that higher PSMA expression is associated with cartilage invasion, local invasion, and advanced-stage of disease. PSMA expression can be utilized for detection of lymph node metastasis and has some predictive role in cases of neck metastasis.
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Affiliation(s)
- Gamze Erkılınç
- Department of Pathology, Süleyman Demirel Univesity, Çünür/Isparta, Turkey
- Corresponding Author: Gamze Erkılınç, MD, Department of Pathology, Süleyman Demirel Univesity, Süleyman Demirel Street, 32260, Çünür/Isparta, Turkey Tel: +90-2462113714, Fax: +90-2462112830, E-mail:
| | - Hasan Yasan
- Department of Otorhinolaryngology, Süleyman Demirel Univesity, Çünür/Isparta, Turkey
| | - Yusuf Çağdaş Kumbul
- Department of Otorhinolaryngology, Süleyman Demirel Univesity, Çünür/Isparta, Turkey
| | - Mehmet Emre Sivrice
- Department of Otorhinolaryngology, Süleyman Demirel Univesity, Çünür/Isparta, Turkey
| | - Meltem Durgun
- Department of Pathology, Süleyman Demirel Univesity, Çünür/Isparta, Turkey
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Marycz K, Pielok A, Kornicka-Garbowska K. Equine Hoof Stem Progenitor Cells (HPC) CD29 + /Nestin + /K15 + - a Novel Dermal/epidermal Stem Cell Population With a Potential Critical Role for Laminitis Treatment. Stem Cell Rev Rep 2021; 17:1478-1485. [PMID: 34037924 PMCID: PMC8149919 DOI: 10.1007/s12015-021-10187-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2021] [Indexed: 12/12/2022]
Abstract
Laminitis is a life threating, extremely painful and frequently recurrent disease of horses which affects hoof structure. It results from the disruption of blood flow to the laminae, contributing to laminitis and in severe separation of bone from the hoof capsule. Still, the pathophysiology of the disease remains unclear, mainly due to its complexity. In the light of the presented data, in the extremally difficult process of tissue structure restoration after disruption, a novel type of progenitor cells may be involved. Herein, we isolated and performed the initial characterization of stem progenitor cells isolated from the coronary corium of the equine feet (HPC). Phenotype of the cells was investigated with flow cytometry and RT-qPCR revealing the presence of nestin, CD29, and expression of progenitor cell markers including SOX2, OCT4, NANOG and K14. Morphology of HPC was investigated with light, confocal and SEM microscopes. Cultured cells were characterised by spindle shaped morphology, eccentric nuclei, elongated mitochondria, and high proliferation rate. Plasticity and multilineage differentiation potential was confirmed by specific staining and gene expression analysis. We conclude that HPC exhibit in vitro expansion and plasticity similar to mesenchymal stem cells, which can be isolated from the equine foot, and may be directly involved in the pathogenesis and recovery of laminitis. Obtained results are of importance to the field of laminitis treatment as determining the repairing cell populations could contribute to the discovery of novel therapeutic targets and agents including and cell‐based therapies for affected animals.
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Affiliation(s)
- Krzysztof Marycz
- International Institute of Translational Medicine (MIMT), ul. Jesionowa 11, 55-114, Malin Wisznia Mała, Poland. .,Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, ul. CK Norwida 27, 50-375, Wrocław, Poland.
| | - Ariadna Pielok
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, ul. CK Norwida 27, 50-375, Wrocław, Poland
| | - Katarzyna Kornicka-Garbowska
- International Institute of Translational Medicine (MIMT), ul. Jesionowa 11, 55-114, Malin Wisznia Mała, Poland.,Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, ul. CK Norwida 27, 50-375, Wrocław, Poland
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Wang P, Sun Y, Shi X, Shen H, Ning H, Liu H. 3D printing of tissue engineering scaffolds: a focus on vascular regeneration. Biodes Manuf 2021; 4:344-78. [PMID: 33425460 DOI: 10.1007/s42242-020-00109-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 10/24/2020] [Indexed: 01/31/2023]
Abstract
Tissue engineering is an emerging means for resolving the problems of tissue repair and organ replacement in regenerative medicine. Insufficient supply of nutrients and oxygen to cells in large-scale tissues has led to the demand to prepare blood vessels. Scaffold-based tissue engineering approaches are effective methods to form new blood vessel tissues. The demand for blood vessels prompts systematic research on fabrication strategies of vascular scaffolds for tissue engineering. Recent advances in 3D printing have facilitated fabrication of vascular scaffolds, contributing to broad prospects for tissue vascularization. This review presents state of the art on modeling methods, print materials and preparation processes for fabrication of vascular scaffolds, and discusses the advantages and application fields of each method. Specially, significance and importance of scaffold-based tissue engineering for vascular regeneration are emphasized. Print materials and preparation processes are discussed in detail. And a focus is placed on preparation processes based on 3D printing technologies and traditional manufacturing technologies including casting, electrospinning, and Lego-like construction. And related studies are exemplified. Transformation of vascular scaffolds to clinical application is discussed. Also, four trends of 3D printing of tissue engineering vascular scaffolds are presented, including machine learning, near-infrared photopolymerization, 4D printing, and combination of self-assembly and 3D printing-based methods.
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