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Lei M, Qu X, Wan H, Jin D, Wang S, Zhao Z, Yin M, Payne GF, Liu C. Electro-assembly of a dynamically adaptive molten fibril state for collagen. SCIENCE ADVANCES 2022; 8:eabl7506. [PMID: 35108048 PMCID: PMC8809537 DOI: 10.1126/sciadv.abl7506] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/08/2021] [Indexed: 05/25/2023]
Abstract
Collagen is a biological building block that is hierarchically assembled into diverse morphological structures that, in some cases, is dynamically adaptive in response to external cues and in other cases forms static terminal structures. Technically, there is limited capabilities to guide the emergence of collagen's hierarchical organization to recapitulate the richness of biological structure and function. Here, we report an electro-assembly pathway to create a dynamically adaptive intermediate molten fibril state for collagen. Structurally, this intermediate state is composed of partially aligned and reversibly associating fibrils with limited hierarchical structure. These molten fibrils can be reversibly reconfigured to offer dynamic properties such as stimuli-stiffening, stimuli-contracting, self-healing, and self-shaping. Also, molten fibrils can be guided to further assemble to recapitulate the characteristic hierarchical structural features of native collagen (e.g., aligned fibers with D-banding). We envision that the electro-assembly of collagen fibrils will provide previously unidentified opportunities for tailored collagen-based biomedical materials.
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Affiliation(s)
- Miao Lei
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xue Qu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Frontier Science Center of Optogenetic Techniques for Cell Metabolism, East China University of Science and Technology, Shanghai 200237, China
| | - Haoran Wan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Dawei Jin
- Department of Cardiothoracic Surgery, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai 200127, China
| | - Shijia Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhiling Zhao
- Institute for Bioscience and Biotechnology Research and Robert E. Fischell Biomedical Device Institute, 5118 A. James Clark Hall, College Park, MD 20742, USA
| | - Meng Yin
- Department of Cardiothoracic Surgery, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai 200127, China
| | - Gregory F. Payne
- Institute for Bioscience and Biotechnology Research and Robert E. Fischell Biomedical Device Institute, 5118 A. James Clark Hall, College Park, MD 20742, USA
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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Rao S, Karuppasamy K, Radhakrishnan K, Fagan TE. Restriction of congenital portosystemic shunt using the modified microvascular plug. Catheter Cardiovasc Interv 2021; 98:1358-1362. [PMID: 34487406 DOI: 10.1002/ccd.29934] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 08/21/2021] [Indexed: 11/07/2022]
Abstract
Congenital portosystemic shunts (CPSS) may produce a variety of severe, clinically detrimental presentations. When indicated, closure is recommended; however, if the intrahepatic portal venous system (IPVS) is underdeveloped complete closure may not be possible and may result in severe acute portal hypertension. Staged restriction of CPSS flow by both surgical and complex transcatheter interventions has been successful in augmenting development of the IPVS such that complete occlusion of the CPSS can be performed. We report use of a modified microvascular plug to restrict CPSS flow with subsequent IPVS development and safe complete occlusion of CPSS.
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Affiliation(s)
- Sruti Rao
- Department of Pediatric Cardiology, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | | | - Kadakkal Radhakrishnan
- Department of Pediatric Gastroenterology, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Thomas E Fagan
- Department of Pediatric Cardiology, Valley Children's Healthcare, 9300 Valley Children's, Pl, Madera, CA, USA
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Pauliks LB, Ündar A. Heart Transplantation for Congenital Heart Disease. World J Pediatr Congenit Heart Surg 2011; 2:603-8. [DOI: 10.1177/2150135111410078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Congenital heart disease affects 0.8% of all live-born infants. Some of the malformed hearts can at best be palliated by conventional surgical or catheter interventions from the start. Others fail slowly from chronic overloading. Patients with congenital heart disease have been among the first transplant recipients since 1967. Primary therapy with infant heart transplant is a convincing concept from an immunological perspective but large-scale implementation is limited by donor organ shortages. Another growing area is rescue therapy for older patients with end-stage heart failure after palliative procedures, particularly those with single-ventricle hearts, systemic right ventricles, and associated arrhythmias.
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Affiliation(s)
- Linda B. Pauliks
- Pediatric Cardiology, Department of Pediatrics, Penn State Hershey Children’s Hospital, Hershey, PA, USA
- Department of Pediatrics, Penn State Hershey Pediatric Cardiovascular Research Center, Hershey, PA, USA
| | - Akif Ündar
- Pediatric Cardiology, Department of Pediatrics, Penn State Hershey Children’s Hospital, Hershey, PA, USA
- Department of Pediatrics, Penn State Hershey Pediatric Cardiovascular Research Center, Hershey, PA, USA
- Department of Surgery, Penn State Milton S. Hershey Medical Center, Penn State Hershey College of Medicine, Penn State Hershey Children’s Hospital, Hershey, PA, USA
- Department of Bioengineering, Penn State Milton S. Hershey Medical Center, Penn State Hershey College of Medicine, Penn State Hershey Children’s Hospital, Hershey, PA, USA
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Abstract
PURPOSE OF REVIEW Pediatric interventional cardiology has evolved quite dramatically over the past few decades and now, in 2009, the published literature continues to evolve new percutaneous strategies for managing patients with congenital heart disease, both simple and complex. Our goal for this review was to highlight new techniques and the new devices available to the pediatric interventional cardiologist, and to review the outcomes from past endeavors. RECENT FINDINGS Manuscripts published in the past year continue to demonstrate innovation; indicating an exciting and increasing experience of transcatheter treatment of septal communications using either new occluder devices or novel techniques. Bioabsorbable devices and percutaneously implanted valves are leading examples of technological improvements and creativity that will ultimately improve patient outcomes while minimizing invasiveness. Reports on procedural outcomes show technically safe early follow-up, with promising mid-term and long-term results for balloon valvuloplasty, balloon atrial septostomy and pulmonary artery stent implantation. As well, fetal and hybrid interventions have become important new arenas for the pediatric interventionist. SUMMARY Pediatric interventions have grown far beyond the early stages of the 1980s as mid-term and long-term outcome data are being reported, and many previously insurmountable hurdles have been overcome by developing new strategies and devices.
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