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Chang J, Yu L, Lei J, Liu X, Li C, Zheng Y, Chen H. A multifunctional bio-patch crosslinked with glutaraldehyde for enhanced mechanical performance, anti-coagulation properties, and anti-calcification properties. J Mater Chem B 2023; 11:10455-10463. [PMID: 37888984 DOI: 10.1039/d3tb01724a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Bio-patches for the treatment of valvular disease have been evaluated in clinical trials. It has been shown that failure of these devices, occurring within a few years of implantation, may be due to cytotoxicity, immune response, calcification and thrombosis. Some of these effects may be due to the glutaraldehyde crosslinking process used in the preparation of the materials. A number of studies have focused on strategies to control calcification, while others have concentrated on the prevention of micro-thrombus formation. In the present work, we have introduced amino-terminated poly(ethylene glycol) (NH2-PEG-NH2) as an intermolecular bridge, which not only eliminates free aldehyde groups to prevent calcification, but also introduces sites for the attachment of anticoagulant molecules. Furthermore, PEG, itself a hydrophilic polymer with good biocompatibility, may effectively prevent protein adsorption in the early stages of blood contact leading to thrombus formation. After further covalent attachment of heparin, modified bovine pericardium (BP) showed strong anti-calcification (calcium content: 39.3 ± 3.1 μg mg-1) and anti-coagulation properties (partial thromboplastin time: >300 s). The biocompatibility and mechanical properties, important for clinical use, were also improved by modification. The strategy used in this work includes new ideas and technologies for the improvement of valve products used in the clinic.
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Affiliation(s)
- Jiahao Chang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou 215123, P. R. China.
| | - Liyin Yu
- Jiangsu Biosurf Biotech Company Ltd., Building 26, Dongjing Industrial Square, No. 1, Jintian Road, Suzhou Industrial Park, Suzhou 215123, P. R. China.
| | - Jiao Lei
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou 215123, P. R. China.
| | - Xiaoli Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou 215123, P. R. China.
| | - Chunxiao Li
- The SIP Biointerface Engineering Research Institute, Suzhou 215123, P. R. China
| | - Yali Zheng
- The SIP Biointerface Engineering Research Institute, Suzhou 215123, P. R. China
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou 215123, P. R. China.
- The SIP Biointerface Engineering Research Institute, Suzhou 215123, P. R. China
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Richert E, Nienhaus A, Ekroll Jahren S, Gazdhar A, Grab M, Hörer J, Carrel T, Obrist D, Heinisch PP. Biogenic polymer-based patches for congenital cardiac surgery: a feasibility study. Front Cardiovasc Med 2023; 10:1164285. [PMID: 37424903 PMCID: PMC10325621 DOI: 10.3389/fcvm.2023.1164285] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/02/2023] [Indexed: 07/11/2023] Open
Abstract
Objective Currently used patch materials in congenital cardiac surgery do not grow, renew, or remodel. Patch calcification occurs more rapidly in pediatric patients eventually leading to reoperations. Bacterial cellulose (BC) as a biogenic polymer offers high tensile strength, biocompatibility, and hemocompatibility. Thus, we further investigated the biomechanical properties of BC for use as patch material. Methods The BC-producing bacteria Acetobacter xylinum were cultured in different environments to investigate optimal culturing conditions. For mechanical characterization, an established method of inflation for biaxial testing was used. The applied static pressure and deflection height of the BC patch were measured. Furthermore, a displacement and strain distribution analysis was performed and compared to a standard xenograft pericardial patch. Results The examination of the culturing conditions revealed that the BC became homogenous and stable when cultivated at 29°C, 60% oxygen concentration, and culturing medium exchange every third day for a total culturing period of 12 days. The estimated elastic modulus of the BC patches ranged from 200 to 530 MPa compared to 230 MPa for the pericardial patch. The strain distributions, calculated from preloaded (2 mmHg) to 80 mmHg inflation, show BC patch strains ranging between 0.6% and 4%, which was comparable to the pericardial patch. However, the pressure at rupture and peak deflection height varied greatly, ranging from 67 to around 200 mmHg and 0.96 to 5.28 mm, respectively. The same patch thickness does not automatically result in the same material properties indicating that the manufacturing conditions have a significant impact on durability. Conclusions BC patches can achieve comparable results to pericardial patches in terms of strain behavior as well as in the maximum applied pressure that can be withstood without rupture. Bacterial cellulose patches could be a promising material worth further research.
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Affiliation(s)
- Emma Richert
- Department of Congenital and Paediatric Heart Surgery, German Heart Centre Munich, Technische Universität München, Munich, Germany
- Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-Universität, Munich, Germany
| | - Andrea Nienhaus
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Silje Ekroll Jahren
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Amiq Gazdhar
- Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Maximilian Grab
- Department of Cardiac Surgery, Ludwig-Maximilian University, Munich, Germany
| | - Jürgen Hörer
- Department of Congenital and Paediatric Heart Surgery, German Heart Centre Munich, Technische Universität München, Munich, Germany
- Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-Universität, Munich, Germany
| | - Thierry Carrel
- Department of Cardiac Surgery, University Hospital, Zürich, Switzerland
| | - Dominik Obrist
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Paul Philipp Heinisch
- Department of Congenital and Paediatric Heart Surgery, German Heart Centre Munich, Technische Universität München, Munich, Germany
- Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-Universität, Munich, Germany
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3
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Stabilized human amniotic membrane for enhanced sustainability and biocompatibility. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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Li Y, Zhou Y, Qiao W, Shi J, Qiu X, Dong N. Application of decellularized vascular matrix in small-diameter vascular grafts. Front Bioeng Biotechnol 2023; 10:1081233. [PMID: 36686240 PMCID: PMC9852870 DOI: 10.3389/fbioe.2022.1081233] [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: 10/27/2022] [Accepted: 12/13/2022] [Indexed: 01/09/2023] Open
Abstract
Coronary artery bypass grafting (CABG) remains the most common procedure used in cardiovascular surgery for the treatment of severe coronary atherosclerotic heart disease. In coronary artery bypass grafting, small-diameter vascular grafts can potentially replace the vessels of the patient. The complete retention of the extracellular matrix, superior biocompatibility, and non-immunogenicity of the decellularized vascular matrix are unique advantages of small-diameter tissue-engineered vascular grafts. However, after vascular implantation, the decellularized vascular matrix is also subject to thrombosis and neoplastic endothelial hyperplasia, the two major problems that hinder its clinical application. The keys to improving the long-term patency of the decellularized matrix as vascular grafts include facilitating early endothelialization and avoiding intravascular thrombosis. This review article sequentially introduces six aspects of the decellularized vascular matrix as follows: design criteria of vascular grafts, components of the decellularized vascular matrix, the changing sources of the decellularized vascular matrix, the advantages and shortcomings of decellularization technologies, modification methods and the commercialization progress as well as the application prospects in small-diameter vascular grafts.
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Affiliation(s)
| | | | | | | | - Xuefeng Qiu
- *Correspondence: Xuefeng Qiu, ; Nianguo Dong,
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5
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Li C, Xie B, Tan R, Liang L, Peng Z, Chen Q. Current development of bovine jugular vein conduit for right ventricular outflow tract reconstruction. Front Bioeng Biotechnol 2022; 10:920152. [PMID: 35992331 PMCID: PMC9386425 DOI: 10.3389/fbioe.2022.920152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/07/2022] [Indexed: 11/13/2022] Open
Abstract
Right ventricular outflow tract (RVOT) reconstruction is a common surgical method to treat congenital cardiac lesions, and bovine jugular vein conduit (BJVC) has become a prevalent candidate of prosthetic material for this procedure since 1999. Although many clinical studies have shown encouraging results on BJVCs, complications such as stenosis, aneurysmal dilatation, valve insufficiency, and infective endocarditis revealed in other clinical outcomes still remain problematic. This review describes the underlying mechanisms causing respective complications, and summarizes the current technological development that may address those causative factors. Novel crosslinking agents, decellularization techniques, conduit coatings, and physical reinforcement materials have improved the performances of BJVCs. The authors expect that the breakthroughs in the clinical application of BJVC may come from new genetic research findings and advanced characterization apparatuses and bioreactors, and are optimistic that the BJVC will in the future provide sophisticated therapies for next-generation RVOT reconstruction.
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Affiliation(s)
- Chenggang Li
- Xuzhou Third People’s Hospital, Xuzhou, Jiangsu, China
| | - Bo Xie
- Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruizhe Tan
- Ningbo Regen Biotech, Co., Ltd., Ningbo, Zhejiang, China
| | - Lijin Liang
- Ningbo Regen Biotech, Co., Ltd., Ningbo, Zhejiang, China
| | - Zhaoxiang Peng
- The Affiliated Lihuili Hospital, Ningbo University, Ningbo, Zhejiang, China
- *Correspondence: Zhaoxiang Peng, ; Qi Chen,
| | - Qi Chen
- Ningbo Regen Biotech, Co., Ltd., Ningbo, Zhejiang, China
- *Correspondence: Zhaoxiang Peng, ; Qi Chen,
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Jiang Z, Wu Z, Deng D, Li J, Qi X, Song M, Liu Y, Wu Q, Xie X, Chen Z, Tang Z. Improved Cytocompatibility and Reduced Calcification of Glutaraldehyde-Crosslinked Bovine Pericardium by Modification With Glutathione. Front Bioeng Biotechnol 2022; 10:844010. [PMID: 35662844 PMCID: PMC9160462 DOI: 10.3389/fbioe.2022.844010] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 04/18/2022] [Indexed: 12/16/2022] Open
Abstract
Bioprosthetic heart valves (BHVs) used in clinics are fabricated via glutaraldehyde (GLUT) crosslinking, which results in cytotoxicity and causes eventual valve calcification after implantation into the human body; therefore, the average lifetime and application of BHVs are limited. To address these issues, the most commonly used method is modification with amino acids, such as glycine (GLY), which is proven to effectively reduce toxicity and calcification. In this study, we used the l-glutathione (GSH) in a new modification treatment based on GLUT-crosslinked bovine pericardium (BP) as the GLUT + GSH group, BPs crosslinked with GLUT as GLUT-BP (control group), and GLY modification based on GLUT-BP as the GLUT + GLY group. We evaluated the characteristics of BPs in different treatment groups in terms of biomechanical properties, cell compatibility, aldehyde group content detection, and the calcification content. Aldehyde group detection tests showed that the GSH can completely neutralize the residual aldehyde group of GLUT-BP. Compared with that of GLUT-BP, the endothelial cell proliferation rate of the GLUT + GSH group increased, while its hemolysis rate and the inflammatory response after implantation into the SD rat were reduced. The results show that GSH can effectively improve the cytocompatibility of the GLUT-BP tissue. In addition, the results of the uniaxial tensile test, thermal shrinkage temperature, histological and SEM evaluation, and enzyme digestion experiments proved that GSH did not affect the ECM stability and biomechanics of the GLUT-BP. The calcification level of GLUT-BP modified using GSH technology decreased by 80%, indicating that GSH can improve the anti-calcification performance of GLUT-BP. Compared with GLUT-GLY, GLUT + GSH yielded a higher cell proliferation rate and lower inflammatory response and calcification level. GSH can be used as a new type of anti-calcification agent in GLUT crosslinking biomaterials and is expected to expand the application domain for BHVs in the future.
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Affiliation(s)
- Zhenlin Jiang
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhongshi Wu
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
- NHC Key Laboratory of Birth Defect for Research and Prevention, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
- *Correspondence: Zhongshi Wu, ; Zhenjie Tang,
| | - Dengpu Deng
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jiemin Li
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoke Qi
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Mingzhe Song
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuhong Liu
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Wu
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xinlong Xie
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zeguo Chen
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhenjie Tang
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
- Hunan Engineering Laboratory of Cardiovascular Biomaterials, Changsha, China
- *Correspondence: Zhongshi Wu, ; Zhenjie Tang,
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Grebenik EA, Gafarova ER, Istranov LP, Istranova EV, Ma X, Xu J, Guo W, Atala A, Timashev PS. Mammalian Pericardium-Based Bioprosthetic Materials in Xenotransplantation and Tissue Engineering. Biotechnol J 2020; 15:e1900334. [PMID: 32077589 DOI: 10.1002/biot.201900334] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/29/2020] [Indexed: 12/13/2022]
Abstract
Bioprosthetic materials based on mammalian pericardium tissue are the gold standard in reconstructive surgery. Their application range covers repair of rectovaginal septum defects, abdominoplastics, urethroplasty, duraplastics, maxillofacial, ophthalmic, thoracic and cardiovascular reconstruction, etc. However, a number of factors contribute to the success of their integration into the host tissue including structural organization, mechanical strength, biocompatibility, immunogenicity, surface chemistry, and biodegradability. In order to improve the material's properties, various strategies are developed, such as decellularization, crosslinking, and detoxification. In this review, the existing issues and long-term achievements in the development of bioprosthetic materials based on the mammalian pericardium tissue, aimed at a wide-spectrum application in reconstructive surgery are analyzed. The basic technical approaches to preparation of biocompatible forms providing continuous functioning, optimization of biomechanical and functional properties, and clinical applicability are described.
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Affiliation(s)
- Ekaterina A Grebenik
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Elvira R Gafarova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Leonid P Istranov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Elena V Istranova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Xiaowei Ma
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Jing Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Weisheng Guo
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27101, USA
| | - Peter S Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia.,Institute of Photonic Technologies, Research center "Crystallography and Photonics" RAS, Moscow, 142190, Russia.,N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia
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Arya A, Srivastava NK, Pande S, Tripathi S, Agarwal SK, Tewari P, Kapoor A. Assessment of untreated fresh autologous pericardium as material for construction of heart valve: Result at 5 years. Ann Card Anaesth 2019; 22:273-277. [PMID: 31274488 PMCID: PMC6639893 DOI: 10.4103/aca.aca_50_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: Tetralogy of Fallot requiring transannular repair of the right ventricular outflow tract (RVOT) are exposed to free pulmonary insufficiency and hence inevitable right ventricular dysfunction. This study analyzes the function and structure of untreated autologous pericardium monocusp used to create a competent pulmonary valve. Materials and Methods: This is a retrospective analysis of 52 cases operated between December 2006 and December 2012. Untreated autologous pericardium was used for creating a competent pulmonary valve following a transannular patch. They are followed for functional and structural assessment of the pulmonary valve by echocardiography. Positron emission tomography (PET) with 18 fluorodeoxyglucose was performed in two cases for profiling the pulmonary valve. Results: Median age was 10.5 years (1–38). The follow-up was complete for 42 (80.76%) patients for 3 years and 25 (48.07%) patients for 5 years. The RVOT gradient was 42 mmHg (16–96) in the year of surgery, which reduced to 26 mmHg (10–58) and pulmonary insufficiency that was present in 8.3% of patients in 1st year was witnessed in 22.7% in the 5th year of follow-up. The monocusp patch was successful in creating a competent valve while maintaining its structure at 3 years; however, it became distorted and retracted at 5 years of follow-up. There was no calcification in any of the patients. PET-computed tomography confirmed the uptake of glucose by monocusp at 1 year of follow-up. Conclusion: The untreated autologous pericardium functioned well when it was used to create a competent pulmonary valve at short term and midterm. Although it changed in its structure; there was no calcification at 5 years of follow-up.
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Affiliation(s)
- Amitabh Arya
- Department of Nuclear Medicine, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Navneet Kumar Srivastava
- Department of Cardiovascular and Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Shantanu Pande
- Department of Cardiovascular and Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Shashank Tripathi
- Department of Cardiovascular and Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Surendra Kumar Agarwal
- Department of Cardiovascular and Thoracic Surgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Prabhat Tewari
- Department of Anaesthesiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Aditya Kapoor
- Department of Cardiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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Santoro R, Consolo F, Spiccia M, Piola M, Kassem S, Prandi F, Vinci MC, Forti E, Polvani G, Fiore GB, Soncini M, Pesce M. Feasibility of pig and human-derived aortic valve interstitial cells seeding on fixative-free decellularized animal pericardium. J Biomed Mater Res B Appl Biomater 2015; 104:345-56. [PMID: 25809726 DOI: 10.1002/jbm.b.33404] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 02/09/2015] [Accepted: 02/16/2015] [Indexed: 11/08/2022]
Abstract
Glutaraldehyde-fixed pericardium of animal origin is the elective material for the fabrication of bio-prosthetic valves for surgical replacement of insufficient/stenotic cardiac valves. However, the pericardial tissue employed to this aim undergoes severe calcification due to chronic inflammation resulting from a non-complete immunological compatibility of the animal-derived pericardial tissue resulting from failure to remove animal-derived xeno-antigens. In the mid/long-term, this leads to structural deterioration, mechanical failure, and prosthesis leaflets rupture, with consequent need for re-intervention. In the search for novel procedures to maximize biological compatibility of the pericardial tissue into immunocompetent background, we have recently devised a procedure to decellularize the human pericardium as an alternative to fixation with aldehydes. In the present contribution, we used this procedure to derive sheets of decellularized pig pericardium. The decellularized tissue was first tested for the presence of 1,3 α-galactose (αGal), one of the main xenoantigens involved in prosthetic valve rejection, as well as for mechanical tensile behavior and distensibility, and finally seeded with pig- and human-derived aortic valve interstitial cells. We demonstrate that the decellularization procedure removed the αGAL antigen, maintained the mechanical characteristics of the native pig pericardium, and ensured an efficient surface colonization of the tissue by animal- and human-derived aortic valve interstitial cells. This establishes, for the first time, the feasibility of fixative-free pericardial tissue seeding with valve competent cells for derivation of tissue engineered heart valve leaflets.
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Affiliation(s)
- Rosaria Santoro
- Unità di Ingegneria Tissutale, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Filippo Consolo
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy
| | - Marco Spiccia
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy
| | - Marco Piola
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy
| | - Samer Kassem
- Divisione di Cardiochirurgia, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Francesca Prandi
- Unità di Ingegneria Tissutale, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | | | - Elisa Forti
- Unità di Ingegneria Tissutale, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Gianluca Polvani
- Dipartimento di Scienze Cliniche e di Comunità, Sezione cardiovascolare, Università di Milano, Milan, Italy
| | | | - Monica Soncini
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy
| | - Maurizio Pesce
- Unità di Ingegneria Tissutale, Centro Cardiologico Monzino, IRCCS, Milan, Italy
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Characterization of genipin-modified dentin collagen. BIOMED RESEARCH INTERNATIONAL 2014; 2014:702821. [PMID: 24795891 PMCID: PMC3984863 DOI: 10.1155/2014/702821] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 02/16/2014] [Indexed: 11/18/2022]
Abstract
Application of biomodification techniques to dentin can improve its biochemical and biomechanical properties. Several collagen cross-linking agents have been reported to strengthen the mechanical properties of dentin. However, the characteristics of collagen that has undergone agent-induced biomodification are not well understood. The objective of this study was to analyze the effects of a natural cross-linking agent, genipin (GE), on dentin discoloration, collagen stability, and changes in amino acid composition and lysyl oxidase mediated natural collagen cross-links. Dentin collagen obtained from extracted bovine teeth was treated with three different concentrations of GE (0.01%, 0.1%, and 0.5%) for several treatment times (0–24 h). Changes in biochemical properties of NaB3H4-reduced collagen were characterized by amino acid and cross-link analyses. The treatment of dentin collagen with GE resulted in a concentration- and time-dependent pigmentation and stability against bacterial collagenase. The lysyl oxidase-mediated trivalent mature cross-link, pyridinoline, showed no difference among all groups while the major divalent immature cross-link, dehydro-dihydroxylysinonorleucine/its ketoamine in collagen treated with 0.5% GE for 24 h, significantly decreased compared to control (P < 0.05). The newly formed GE-induced cross-links most likely involve lysine and hydroxylysine residues of collagen in a concentration-dependent manner. Some of these cross-links appear to be reducible and stabilized with NaB3H4.
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Mathapati S, Bishi DK, Guhathakurta S, Cherian KM, Venugopal JR, Ramakrishna S, Verma RS. Biomimetic acellular detoxified glutaraldehyde cross-linked bovine pericardium for tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1561-72. [DOI: 10.1016/j.msec.2012.12.062] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 10/16/2012] [Accepted: 12/17/2012] [Indexed: 11/16/2022]
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Lam MT, Wu JC. Biomaterial applications in cardiovascular tissue repair and regeneration. Expert Rev Cardiovasc Ther 2013; 10:1039-49. [PMID: 23030293 DOI: 10.1586/erc.12.99] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cardiovascular disease physically damages the heart, resulting in loss of cardiac function. Medications can help alleviate symptoms, but it is more beneficial to treat the root cause by repairing injured tissues, which gives patients better outcomes. Besides heart transplants, cardiac surgeons use a variety of methods for repairing different areas of the heart such as the ventricular septal wall and valves. A multitude of biomaterials are used in the repair and replacement of impaired heart tissues. These biomaterials fall into two main categories: synthetic and natural. Synthetic materials used in cardiovascular applications include polymers and metals. Natural materials are derived from biological sources such as human donor or harvested animal tissues. A new class of composite materials has emerged to take advantage of the benefits of the strengths and minimize the weaknesses of both synthetic and natural materials. This article reviews the current and prospective applications of biomaterials in cardiovascular therapies.
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Affiliation(s)
- Mai T Lam
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Hagey Pediatric Regenerative Research Laboratory, Stanford University School of Medicine, Stanford, CA, USA
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Abstract
In this Editor's Review, articles published in 2011 are organized by category and briefly summarized. As the official journal of The International Federation for Artificial Organs, The International Faculty for Artificial Organs, and the International Society for Rotary Blood Pumps, Artificial Organs continues in the original mission of its founders "to foster communications in the field of artificial organs on an international level."Artificial Organs continues to publish developments and clinical applications of artificial organ technologies in this broad and expanding field of organ replacement, recovery, and regeneration from all over the world. We take this time also to express our gratitude to our authors for offering their work to this journal. We offer our very special thanks to our reviewers who give so generously of time and expertise to review, critique, and especially provide meaningful suggestions to the author's work whether eventually accepted or rejected. Without these excellent and dedicated reviewers, the quality expected from such a journal would not be possible. We also express our special thanks to our Publisher, Wiley-Blackwell, for their expert attention and support in the production and marketing of Artificial Organs. In this Editor's Review, that historically has been widely well-received by our readership, we aim to provide a brief reflection of the currently available worldwide knowledge that is intended to advance and better human life while providing insight for continued application of technologies and methods of organ replacement, recovery, and regeneration. We look forward to recording further advances in the coming years.
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Affiliation(s)
- Paul S Malchesky
- Artificial Organs Editorial Office, 10 West Erie Street, Painesville, OH 44077, USA.
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