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Dobrzyńska-Mizera M, Dodda JM, Liu X, Knitter M, Oosterbeek RN, Salinas P, Pozo E, Ferreira AM, Sadiku ER. Engineering of Bioresorbable Polymers for Tissue Engineering and Drug Delivery Applications. Adv Healthc Mater 2024:e2401674. [PMID: 39233521 DOI: 10.1002/adhm.202401674] [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: 05/06/2024] [Revised: 08/15/2024] [Indexed: 09/06/2024]
Abstract
Herein, the recent advances in the development of resorbable polymeric-based biomaterials, their geometrical forms, resorption mechanisms, and their capabilities in various biomedical applications are critically reviewed. A comprehensive discussion of the engineering approaches for the fabrication of polymeric resorbable scaffolds for tissue engineering, drug delivery, surgical, cardiological, aesthetical, dental and cardiovascular applications, are also explained. Furthermore, to understand the internal structures of resorbable scaffolds, representative studies of their evaluation by medical imaging techniques, e.g., cardiac computer tomography, are succinctly highlighted. This approach provides crucial clinical insights which help to improve the materials' suitable and viable characteristics for them to meet the highly restrictive medical requirements. Finally, the aspects of the legal regulations and the associated challenges in translating research into desirable clinical and marketable materials of polymeric-based formulations, are presented.
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Affiliation(s)
- Monika Dobrzyńska-Mizera
- Institute of Materials Technology, Polymer Division, Poznan University of Technology, Poznan, Poland
| | - Jagan Mohan Dodda
- New Technologies - Research Centre (NTC), University of West Bohemia, Univerzitní 8, Pilsen, 30100, Czech Republic
| | - Xiaohua Liu
- Chemical and Biomedical Engineering Department, University of Missouri, 1030 Hill Street, Columbia, Missouri, 65211, USA
| | - Monika Knitter
- Institute of Materials Technology, Polymer Division, Poznan University of Technology, Poznan, Poland
| | - Reece N Oosterbeek
- Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK
| | - Pablo Salinas
- Department of Cardiology, Hospital Clínico San Carlos, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Eduardo Pozo
- Department of Cardiology, Hospital Clínico San Carlos, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Ana Marina Ferreira
- School of Engineering, Newcastle University, Newcastle upon Tyne, Newcastle, NE1 7RU, UK
| | - Emmanuel Rotimi Sadiku
- Tshwane University of Technology, Department of Chemical, Metallurgical and Materials Engineering, Polymer Division & Institute for Nano Engineering Research (INER), Pretoria West Campus, Pretoria, South Africa
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Pedroso AR, Melo RMD, Oliveira ECD. Relaxation incisions and tensile strength in the abdominal wall of pigs. Acta Cir Bras 2019; 34:e201900608. [PMID: 31432999 PMCID: PMC6705344 DOI: 10.1590/s0102-865020190060000008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 05/05/2019] [Indexed: 11/26/2022] Open
Abstract
Purpose To analyze the resistance to medial traction of abdominal wall muscles, before and after performing relaxing incisions. Methods Seventeen live pigs were used. After a median laparotomy, the handles were made in the rectus abdominis muscles (RAM) to fit the dynamometer. Step 1 (control phase): tensile strength measured without performing relaxant incisions. Step 2: A curvilinear relaxant incision was made on the anterior blade of the right RAM sheath and then the tensile strength was measured by the edge of the wound. The same procedure was adopted after incision of the left posterior blade. Step 3: Relaxing incisions were made in the right posterior and left anterior blade, so that both sides were left with a relaxing incision on both blades. Measurements of resistance were performed. Results There was no statistically significant difference between the sides. On the right and left side, all treatments reduced the tensile strength when compared to each other and to the control. There was a reduction of 12% and 9.8% after incision of the anterior and posterior blade, respectively. Conclusion Relaxing incisions reduced tensile strength in the ventral abdominal wall.
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Affiliation(s)
- Aline Ribeiro Pedroso
- Fellow Master degree, Postgraduate Program in Health Sciences , Faculdade de Medicina , Universidade Federal de Goiás (FM-UFG), Goiania - GO , Brazil . Design of the study, technical procedures, acquisition and interpretation of data, manuscript writing
| | - Renato Miranda de Melo
- PhD, Associate Professor, Division of Operative Technique and Experimental Surgery , FM - UFG , Goiania - GO , Brazil . Conception, design, intellectual and scientific content of the study; technical procedures; critical revision
| | - Enio Chaves de Oliveira
- PhD, Associate Professor, Postgraduate Program in Health Sciences, Department of Surgery , FM - UFG , Goiania - GO , Brazil . Technical procedures, intellectual and scientific content of the study, critical revision
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Barbieri RL, Parreira SDF, Studart SDV, DA-Silva AR, Duarte IDS, Leme PLS. STEM CELLS HEMATOPOIETIC NICHES AND INFLAMMATORY RESPONSE TO DIFFERENT SYNTHETIC PROSTHESIS IMPLANTED IN RAT WITH INCISIONAL HERNIAS. ABCD-ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA 2017; 30:108-113. [PMID: 29257845 PMCID: PMC5543788 DOI: 10.1590/0102-6720201700020007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 04/11/2017] [Indexed: 11/22/2022]
Abstract
Background: Extramedullary hematopoiesis depends on complex pathophysiological mechanisms linked to hematopoietic stem cells and the proteins considered mediators of the inflammation. The identification of hematopoietic cells outside bone marrow in the adult is an occurrence that can occasionally follows the inflammatory response, was considered a secondary occurrence, but current biomolecular studies have changed that concept. Aim: Describe the presence of clusters of precursor cells of platelets (megakaryocytes), and cells of the inflammatory response in the abdominal wall and spleen of rats with experimentally induced incisional hernias and repaired with different synthetic prostheses. Methods: Twenty-five rats with incisional hernias previously performed, were divided into groups of five animals each: Group 1, repair of the hernia defect without prosthetic implant; Group 2, repair with polypropylene prosthesis; Group 3, repair using polypropylene with low weight; Group 4, the use of polypropylene and polyglecaprone prosthesis; Group 5, of polypropylene and polyglactin prosthesis. All prostheses were cut in rhombus format with area 2,625 cm². The animals were reoperated after 10 days, the abdominal walls were removed with the viscera attached to them and the material was processed for histological study. Results: Megakaryocyte niches in the abdominal wall and spleen, occasionally removed together with the adhesions produced in animals with implantation of prostheses and significant inflammatory reaction. Conclusion: The intense inflammatory reaction due to the prostheses with polypropylene in their composition was disproportionate to the expected response, indicating that further studies should be accomplished including immunophenotyping evaluation and specific panels of monoclonal antibodies to better understand the findings.
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Varella PZ, Czeczko NG, Prestes MA, Czeczko AEA, Fagundes MDC, Petisco RD. Ventral abdominal wall defect correction in rats with contaminated meshes. Acta Cir Bras 2016; 31:680-688. [PMID: 27828602 DOI: 10.1590/s0102-865020160100000007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/21/2016] [Indexed: 11/22/2022] Open
Abstract
PURPOSE: To investigate whether there is a difference between Marlex(r) and Dynamesh PP-light Marlex(r) meshes, in the abdominal wall defect correction, on rats in contaminated surgical site. METHODS: Twenty-eight Wistar rats were divided into two groups of 14, and four subgroups of seven animals. All subgroups underwent similar surgical procedure. One group received the mesh Marlex(r) and the other Dynamesh PP-light(r) for correction of the defect. Before implanting, the meshes went through a contamination process, on which was used standard solution containing 10 UFC of Escherichia coli. Fragments of the animal's abdominal wall received macroscopic, microscopic and microbiological analysis. RESULTS: There was no statistical significance in the analysis of macroscopic variables. Accentuated inflammatory process was shown in all subgroups. The foreign body type reaction was mild in all subgroups, except Dynamesh(r)-14, which was moderate with no statistical significance. The microbiological analysis of the meshes was also similar between the subgroups. CONCLUSION: There was no difference between the meshes of Marlex(r) and Dynamesh PP-light(r) in the ventral abdominal wall defect correction on rats in contaminated surgical site.
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Affiliation(s)
- Paola Zarur Varella
- Fellow Master degree, Postgraduate Program in Principles of Surgery, Medical Research Institute, Faculdade Evangélica do Paraná (FEPAR), Curitiba-PR, Brazil. Technical procedures, design of the study, manuscript preparation
| | - Nicolau Gregori Czeczko
- PhD, Associate Professor, Department of Surgery, FEPAR, Curitiba-PR, Brazil. Design of the study, critical revision, final approval of the manuscript
| | - Manoel Alberto Prestes
- PhD, Assistant Professor, Department of Surgery, FEPAR, Curitiba-PR, Brazil. Design of the study, critical revision, final approval the manuscript
| | - Alexandre Eduardo Augustin Czeczko
- Fellow Master degree, Postgraduate Program in Principles of Surgery, Medical Research Institute, FEPAR, Curitiba-PR, Brazil. Technical procedures, acquisition of data, manuscript preparation
| | - Marília da Cruz Fagundes
- Graduate student, School of Medicine, PIBIC, FEPAR, Curitiba-PR, Brazil. Technical procedures, acquisition of data
| | - Roberta Dombroski Petisco
- Graduate student, School of Medicine, PIBIC, FEPAR, Curitiba-PR, Brazil. Technical procedures, acquisition of data
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