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Rose II, Kather M, Roth H, Dünkelberg H, Rein L, Klimosch SN, Schmolz M, Wessling M. Single-step chitosan functionalized membranes for heparinization. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120567] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Li CG, Yang Q, Chen D, Zhu H, Chen J, Liu R, Dang Q, Wang X. Polyethyleneimine-assisted co-deposition of polydopamine coating with enhanced stability and efficient secondary modification. RSC Adv 2022; 12:34837-34849. [DOI: 10.1039/d2ra05130c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/23/2022] [Indexed: 12/13/2022] Open
Abstract
The stability and grafting efficiency are important for polydopamine (pDA) coatings used as platforms for secondary grafting.
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Affiliation(s)
- Chun-gong Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Qinqin Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Dong Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Hongliang Zhu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Jiachen Chen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Runjin Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Qi Dang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 401331, PR China
| | - Xiang Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
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Mostafavi AH, Hosseini SS. Investigations of the characteristics and performance of modified polyethersulfones (PES) as membrane oxygenator. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2021-0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The modification of membrane oxygenators to minimize protein adsorption onto the surface is often accompanied by the loss of membrane performance. This study aims to explore polyethersulfone (PES) as a new material for membrane oxygenator applications and to assess its potentials. Accordingly, different modification techniques are applied to improve surface properties of PES membranes. To achieve this goal, two separate modification methods including incorporation of TiO2 into the membrane matrix as well as grafting polyethylene glycol (PEG) through oxygen plasma treatment are developed and the effects are examined. The results reveal that protein adsorption to the nanocomposite membrane containing 0.50 wt. % TiO2 and the grafted membrane decreased by 47 and 31%, respectively. In terms of performance, permeability and oxygen transfer rate of all modified membranes exceeded 808 GPU and 2.7 × 10−4 mol·m−2·s−1, respectively. Contact angle analysis revealed signs of hydrophilicity enhancement of membranes after modifications. The findings suggest that upon proper modifications, membranes based on PES could be considered as promising candidates for membrane oxygenator applications and deserves further investigations.
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Affiliation(s)
- Amir Hossein Mostafavi
- Membrane Science and Technology Research Group, Department of Chemical Engineering , Tarbiat Modares University , Tehran , Iran
| | - Seyed Saeid Hosseini
- Membrane Science and Technology Research Group, Department of Chemical Engineering , Tarbiat Modares University , Tehran , Iran
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology , University of South Africa , Johannesburg , South Africa
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Vakili H, Mohseni M, Ghanbari H, Yahyaei H, Makki H, González A, Alonso-Varona A, Garrido Pascual P, Irusta L. Enhanced hemocompatibility of a PEGilated polycarbonate based segmented polyurethane. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1857760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Helma Vakili
- Department of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mohsen Mohseni
- Department of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hossein Ghanbari
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
- Research Center for Advanced Technologies in Cardiovascular Medicine, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Hossein Yahyaei
- Department of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hesam Makki
- Department of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Alba González
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country (UPV/EHU), Donostia-San Sebastian, Spain
| | - Ana Alonso-Varona
- Department of Cellular Biology and Histology, Faculty of Medicine and Odontology, University of the Basque Country (UPV/EHU), LeioaBizkaia, Spain
| | - Patricia Garrido Pascual
- Department of Cellular Biology and Histology, Faculty of Medicine and Odontology, University of the Basque Country (UPV/EHU), LeioaBizkaia, Spain
| | - Lourdes Irusta
- POLYMAT, Department of Polymer Science and Technology, University of the Basque Country (UPV/EHU), Donostia-San Sebastian, Spain
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Shan L, Sun Y, Shan F, Li L, Xu ZP. Recent advances in heparinization of polymeric membranes for enhanced continuous blood purification. J Mater Chem B 2020; 8:878-894. [PMID: 31956883 DOI: 10.1039/c9tb02515d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Continuous blood purification technology such as hemodiafiltration has been used worldwide for saving patients suffering from severe diseases or organ function failure, especially in the intensive care unit and emergency setting. The filters as core devices are commonly made of polymer materials as hollow fiber membranes. However, the membrane is often inductively blocked by blood clot formation due to its interactions with blood components. Heparin is the anticoagulant often used in clinical practice for anti-coagulation. Recently, heparin is also employed to modify the hollow fiber membranes either chemically or physically to improve the filtration performance. This review summarizes recent advances in methodology for surface heparinization of such hollow fiber membranes, and their filtration performance improvement. The review also provides expert opinions for further research in this rapidly expanding field.
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Affiliation(s)
- Liang Shan
- Intensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao 266003, China and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane 4072, Australia.
| | - Yunbo Sun
- Intensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Feng Shan
- Intensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane 4072, Australia.
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane 4072, Australia.
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Leypoldt JK, Goldstein J, Pouchoulin D, Harenski K. Extracorporeal carbon dioxide removal requirements for ultraprotective mechanical ventilation: Mathematical model predictions. Artif Organs 2019; 44:488-496. [PMID: 31769043 PMCID: PMC7187447 DOI: 10.1111/aor.13601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/02/2019] [Accepted: 11/07/2019] [Indexed: 12/11/2022]
Abstract
Extracorporeal carbon dioxide (CO2) removal (ECCO2R) facilitates the use of low tidal volumes during protective or ultraprotective mechanical ventilation when managing patients with acute respiratory distress syndrome (ARDS); however, the rate of ECCO2R required to avoid hypercapnia remains unclear. We calculated ECCO2R rate requirements to maintain arterial partial pressure of CO2 (PaCO2) at clinically desirable levels in mechanically ventilated ARDS patients using a six‐compartment mathematical model of CO2 and oxygen (O2) biochemistry and whole‐body transport with the inclusion of an ECCO2R device for extracorporeal veno‐venous removal of CO2. The model assumes steady state conditions. Model compartments were lung capillary blood, arterial blood, venous blood, post‐ECCO2R venous blood, interstitial fluid and tissue cells, with CO2 and O2 distribution within each compartment; biochemistry included equilibrium among bicarbonate and non‐bicarbonate buffers and CO2 and O2 binding to hemoglobin to elucidate Bohr and Haldane effects. O2 consumption and CO2 production rates were assumed proportional to predicted body weight (PBW) and adjusted to achieve reported arterial partial pressure of O2 and a PaCO2 level of 46 mmHg at a tidal volume of 7.6 mL/kg PBW in the absence of an ECCO2R device based on average data from LUNG SAFE. Model calculations showed that ECCO2R rates required to achieve mild permissive hypercapnia (PaCO2 of 46 mmHg) at a ventilation frequency or respiratory rate of 20.8/min during mechanical ventilation increased when tidal volumes decreased from 7.6 to 3 mL/kg PBW. Higher ECCO2R rates were required to achieve normocapnia (PaCO2 of 40 mmHg). Model calculations also showed that required ECCO2R rates were lower when ventilation frequencies were increased from 20.8/min to 26/min. The current mathematical model predicts that ECCO2R rates resulting in clinically desirable PaCO2 levels at tidal volumes of 5‐6 mL/kg PBW can likely be achieved in mechanically ventilated ARDS patients with current technologies; use of ultraprotective tidal volumes (3‐4 mL/kg PBW) may be challenging unless high mechanical ventilation frequencies are used.
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Affiliation(s)
- John Kenneth Leypoldt
- Polish Academy of Sciences, Nalecz Institute of Biocybernetics and Biomedical Engineering, Warsaw, Poland
| | | | | | - Kai Harenski
- Baxter Deutschland GmbH, Unterschleissheim, Germany
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Abstract
In this Editor's Review, articles published in 2016 are organized by category and briefly summarized. 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. As the official journal of The International Federation for Artificial Organs, The International Faculty for Artificial Organs, the International Society for Mechanical Circulatory Support, the International Society for Pediatric Mechanical Cardiopulmonary Support, and the Vienna International Workshop on Functional Electrical Stimulation, 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 were pleased to publish our second Virtual Issue in April 2016 on "Tissue Engineering in Bone" by Professor Tsuyoshi Takato. Our first was published in 2011 titled "Intra-Aortic Balloon Pumping" by Dr. Ashraf Khir. Other peer-reviewed Special Issues this year included contributions from the 11th International Conference on Pediatric Mechanical Circulatory Support Systems and Pediatric Cardiopulmonary Perfusion edited by Dr. Akif Ündar and selections from the 23rd Congress of the International Society for Rotary Blood Pumps edited by Dr. Bojan Biocina. 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 could not be possible. We also express our special thanks to our Publisher, John Wiley & Sons for their expert attention and support in the production and marketing of Artificial Organs. We look forward to reporting further advances in the coming years.
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Bartlet K, Movafaghi S, Kota A, Popat KC. Superhemophobic titania nanotube array surfaces for blood contacting medical devices. RSC Adv 2017. [DOI: 10.1039/c7ra03373g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Appropriate hemocompatible response for blood-contacting medical devices is necessary to prevent device failure.
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Affiliation(s)
- Kevin Bartlet
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins
- USA
| | - Sanli Movafaghi
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins
- USA
| | - Arun Kota
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins
- USA
- School of Biomedical Engineering
| | - Ketul C. Popat
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins
- USA
- School of Biomedical Engineering
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