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Ntampakis G, Pramateftakis MG, Anestiadou E, Bitsianis S, Ioannidis O, Bekiari C, Koliakos G, Karakota M, Tsakona A, Cheva A, Angelopoulos S. Experimental models of high-risk bowel anastomosis in rats: A systematic review. World J Exp Med 2024; 14:94135. [PMID: 38948424 PMCID: PMC11212746 DOI: 10.5493/wjem.v14.i2.94135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/23/2024] [Accepted: 05/10/2024] [Indexed: 06/19/2024] Open
Abstract
BACKGROUND Anastomotic leaks remain one of the most dreaded complications in gastrointestinal surgery causing significant morbidity, that negatively affect the patients' quality of life. Experimental studies play an important role in understanding the pathophysiological background of anastomotic healing and there are still many fields that require further investigation. Knowledge drawn from these studies can lead to interventions or techniques that can reduce the risk of anastomotic leak in patients with high-risk features. Despite the advances in experimental protocols and techniques, designing a high-quality study is still challenging for the investigators as there is a plethora of different models used. AIM To review current state of the art for experimental protocols in high-risk anastomosis in rats. METHODS This systematic review was performed according to The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. To identify eligible studies, a comprehensive literature search was performed in the electronic databases PubMed (MEDLINE) and Scopus, covering the period from conception until 18 October 2023. RESULTS From our search strategy 102 studies were included and were categorized based on the mechanism used to create a high-risk anastomosis. Methods of assessing anastomotic healing were extracted and were individually appraised. CONCLUSION Anastomotic healing studies have evolved over the last decades, but the findings are yet to be translated into human studies. There is a need for high-quality, well-designed studies that will help to the better understanding of the pathophysiology of anastomotic healing and the effects of various interventions.
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Affiliation(s)
- Georgios Ntampakis
- Fourth Department of Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece
| | | | - Elissavet Anestiadou
- Fourth Department of Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece
| | - Stefanos Bitsianis
- Fourth Department of Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece
| | - Orestis Ioannidis
- Fourth Department of Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece
| | - Chryssa Bekiari
- Laboratory of Anatomy and Histology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
- Experimental and Research Center, Papageorgiou General Hospital of Thessaloniki, Thessaloniki 56403, Greece
| | - George Koliakos
- Laboratory of Biochemistry, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Maria Karakota
- Laboratory of Biochemistry, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Anastasia Tsakona
- Department of Pathology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Angeliki Cheva
- Department of Pathology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Stamatios Angelopoulos
- Fourth Department of Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki 57010, Greece
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Gené-Škrabec C, Cremades M, Fernández-Pujol A, Cortinovis S, Corral J, Julián JF, Parés D. Clinical results after external reinforcement of colorectal anastomosis: a systematic review. Int J Surg 2023; 109:4322-4332. [PMID: 37707516 PMCID: PMC10720808 DOI: 10.1097/js9.0000000000000747] [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: 06/19/2023] [Accepted: 08/25/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE The aim of this review is to describe and assess the existing methods to cover colorectal anastomoses with biomaterials and their clinical impact in reducing anastomotic leakage (AL). SUMMARY BACKGROUND DATA The most serious complication in colorectal surgery is AL. Despite improvements in its diagnosis and management, AL remains an unresolved issue. To prevent its appearance and clinical consequences, different external reinforcement techniques with synthetic or biomaterials have been described. METHODS A systematic review search of the available literature until June 2022 was performed, looking for all literature regarding external reinforcement of colonic or colorectal anastomoses. After the review process, a classification of materials was proposed into solid and liquid materials, and an assessment of their clinical impact was performed. The study protocol has been registered at PROSPERO and has been reported in the line with PRISMA and AMSTAR Guidelines 11,12 . RESULTS Ninety-seven articles that fulfilled inclusion criteria, were identified and revised. Overall, 18 of the selected articles focused on human clinical trials and 79 on animal models. Only fibrin sealants, collagen patches, and omentoplasty have shown positive results in humans. CONCLUSIONS Fibrin sealants, collagen patches, and omentoplasty are, so far, the most studied biomaterials. However, further studies are required to confirm these findings before definite recommendations can be made.
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Affiliation(s)
- Clara Gené-Škrabec
- Department of General Surgery, Hospital Universitari Germans Trias i Pujol, School of Medicine, Universitat Autònoma de Barcelona, Institut de Recerca Germans Trias i Pujol – IGTP, Barcelona, Spain
| | - Manel Cremades
- Department of General Surgery, Hospital Universitari Germans Trias i Pujol, School of Medicine, Universitat Autònoma de Barcelona, Institut de Recerca Germans Trias i Pujol – IGTP, Barcelona, Spain
| | | | - Sara Cortinovis
- Department of General Surgery, ASUGI Cattinara, Università degli studi di Trieste, Trieste, Italy
| | - Javier Corral
- Department of General Surgery, Hospital Universitari Germans Trias i Pujol, School of Medicine, Universitat Autònoma de Barcelona, Institut de Recerca Germans Trias i Pujol – IGTP, Barcelona, Spain
| | - Joan-F Julián
- Department of General Surgery, Hospital Universitari Germans Trias i Pujol, School of Medicine, Universitat Autònoma de Barcelona, Institut de Recerca Germans Trias i Pujol – IGTP, Barcelona, Spain
| | - David Parés
- Department of General Surgery, Hospital Universitari Germans Trias i Pujol, School of Medicine, Universitat Autònoma de Barcelona, Institut de Recerca Germans Trias i Pujol – IGTP, Barcelona, Spain
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Matsuo N, Ohki T, Aoyama S, Yamaguchi S, Itabashi M, Egawa H, Yamamoto M. Transplantation of hybrid adipose-derived stem cell sheet with autologous peritoneum: An in vivo feasibility study. Heliyon 2023; 9:e12992. [PMID: 36747528 PMCID: PMC9898601 DOI: 10.1016/j.heliyon.2023.e12992] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
Introduction In regenerative medicine, cell sheet engineering has various advantages, including the retention of cells at the transplantation site for a longer period and the local delivery of growth factors and cytokines. Adipose-derived stem cell (ASC) is widely used owing to their various functions such as wound healing, immunomodulation, and nerve regeneration, in addition to their ability to differentiate into adipocytes, chondrocytes, and osteoblasts. ASC sheet generated using cell sheet engineering is considered effective in preventing anastomotic leakage, a serious postoperative complication in gastrointestinal surgery. However, the ASC sheet is too soft, thin, and brittle to handle with laparoscopic forceps during the operation. Therefore, we considered using the peritoneum, which is stiff and easy to collect while operating, as an alternative support. In this study, we explored the feasibility of using the peritoneum as a support for the precise transplantation of ASC sheets during surgery. Methods ASCs were isolated from the subcutaneous fat of the inguinal region of Sprague-Dawley (SD) transgenic rats expressing green fluorescent protein. ASCs were cultured until passage 3, seeded in temperature-responsive culture dishes, and the resulting ASC sheet was harvested at more than 80% confluency. Non-transgenic SD rats were used for transplant experiments. The wall peritoneum was harvested from SD rats following laparotomy, and hybrid adipose-derived stem cell (HASC) sheet was prepared by laminating the peritoneum with ASC sheet. The cell sheets were transplanted on the backs of SD rats following the incision. On post-transplantation days 3 and 7, the specimens were extracted. ASC and HASC sheets were then compared macroscopically and histopathologically. Results HASC sheet transplantation was macroscopically and histopathologically more effective than ASC sheet transplantation. The peritoneum provided sufficient stiffness as a support for precise transplantation. Conclusion The newly developed HASC sheet, which combine the advantages of ASC sheet with those of the peritoneum, could be more useful for clinical application than the ASC sheet alone.
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Affiliation(s)
- Natsuki Matsuo
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
| | - Takeshi Ohki
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
- Department of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
- Corresponding author. Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan.
| | - Shota Aoyama
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
| | - Shigeki Yamaguchi
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
| | - Michio Itabashi
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
| | - Hiroto Egawa
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, 8-1 Kawada-Cho Shinjuku-ku Tokyo, 162-8666, Japan
| | - Masakazu Yamamoto
- Department of Gastroenterological Surgery, Utsunomiya Memorial Hospital, 1-3-16 Ohdori Utsunomiya-shi Tochigi, 320-0811, Japan
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Louit A, Beaudet MJ, Gros-Louis F, Berthod F. Tissue-engineered in vitro modeling of the impact of Schwann cells in amyotrophic lateral sclerosis. Biotechnol Bioeng 2022; 119:1938-1948. [PMID: 35289393 DOI: 10.1002/bit.28083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/14/2021] [Accepted: 03/07/2022] [Indexed: 11/06/2022]
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a devastating neurodegenerative disease affecting upper and lower motor neurons (MN). To investigate whether Schwann cells could be involved in the disease pathogenesis, we developed a tissue-engineered 3D in vitro model that combined MNs cocultured with astrocytes and microglia seeded on top of a collagen sponge populated with epineurium fibroblasts to enable 3D axonal migration. C2C12 myoblasts were seeded underneath the sponge in presence or absence of Schwann cells. To reproduce an ALS cellular microenvironment, MNs, astrocytes and microglia were extracted from SOD1G93A mice recapitulating many aspects of the human disease. This 3D ALS in vitro model was compared with a 3D control made of cells isolated from SOD1WT mice. We showed that normal Schwann cells strongly enhanced MN axonal migration in the 3D control model but had no effect in the ALS model. However, ALS-derived Schwann cells isolated from SOD1G93A mice failed to significantly improve axonal migration in both models. These results suggest that a cell therapy using healthy Schwann cells may not be effective in promoting axonal regeneration in ALS. In addition, this 3D ALS model could be used to study the impact of other cell types on ALS by various combinations of normal and diseased cells. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Aurélie Louit
- LOEX, Centre de recherche du CHU de Québec-Université Laval
| | | | - François Gros-Louis
- LOEX, Centre de recherche du CHU de Québec-Université Laval.,Department of Surgery, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - François Berthod
- LOEX, Centre de recherche du CHU de Québec-Université Laval.,Department of Surgery, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
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