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Stegmayr BG, Lundberg LD. Hemodialysis patients have signs of a chronic thrombotic burden. BMC Nephrol 2024; 25:223. [PMID: 38997655 PMCID: PMC11245813 DOI: 10.1186/s12882-024-03654-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Cardiovascular diseases are the dominant cause of morbidity in hemodialysis (HD) patients. Unless sufficient anticoagulation is used during HD, clotting may appear. The objective was to investigate if levels of fibrin degradation products (D-dimer) were increased before and during HD. METHODS The combined observational study included 20 patients performing a total of 60 hemodialysis divided into three sessions of low-flux dialysis. None of the patients suffered from any clinically evident thromboembolic event before or during the study. Median bolus anticoagulation (mainly tinzaparin) doses were 84 Units/kg bow. Blood samples were drawn before HD (predialysis), and at 30min and 180min during HD with focus on analyzing D-dimer levels and its relation to interdialytic weight gain (IDWG) and speed of fluid elimination by HD (UF-rate). RESULTS Predialysis, D-dimer levels (mean 0.767 ±0.821, min 0.136mg/L) were above the upper reference value in 95% of the sessions. D-dimer levels were lowered at 30min (p<0.001) and returned to predialysis levels at 180min. Predialysis D-dimer correlated with NT-pro-BNP, Troponin T, IDWG and UF-rate. Multiple regression analysis revealed that the D-dimer levels were significantly related to IDWG and the UF-rate. CONCLUSIONS D-dimer levels were elevated in a high proportion predialysis and during HD and related to the IDWG and the UF-rate. Awareness of D-dimer levels and future studies will help clarify if optimization of those variables, besides anticoagulation and biocompatibility measures, will eradicate the repeated subclinical thromboembolic events related to each HD; one reason that may explain organ damage and shortened life span of these patients.
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Affiliation(s)
- Bernd G Stegmayr
- Department of Public Health and Clinical Medicine, Umea University, Umea, Sweden.
| | - Lennart D Lundberg
- Department of Public Health and Clinical Medicine, Umea University, Umea, Sweden
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Li Y, Li H, Kong N, Lu S, Sun C, Tian R, Wang K, Li D, Yang P. Biotribological properties of 3D printed high-oriented short carbon fiber reinforced polymer composites for artificial joints. BIOMATERIALS ADVANCES 2024; 161:213888. [PMID: 38759305 DOI: 10.1016/j.bioadv.2024.213888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/23/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Short carbon fiber (SCF) reinforced polymer composites are expected to possess outstanding biotribological and mechanical properties in certain direction, while the non-oriented SCF weakens its reinforcing effect in the matrix. In this work, high-oriented SCF was achieved during nozzle extrusion, and then SCF reinforced polyether-ether-ketone (PEEK) composites were fabricated by fused deposition modeling (FDM). The concrete orientation process of SCF was theoretically simulated, and significant shear stress difference was generated at both ends of SCF. As a result, the SCF was distributed in the matrix in a hierarchical structure, containing surface layer I, II and core layer. Moreover, the SCF was oriented highly along the printing direction and demonstrated a more competitive orientation distribution compared to other studies. The SCF/PEEK composites showed a considerable improvement in wear resistance by 44 % due to self-lubricating and load-bearing capability of SCF. Besides, it demonstrated enhancements in Brinell hardness, compressive and impact strength by 48.52 %, 16.42 % and 53.64 %, respectively. In addition, SCF/PEEK composites also showed good cytocompatibility. The findings gained herein are useful for developing the high-oriented SCF reinforced polymer composites with superior biotribological and mechanical properties for artificial joints.
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Affiliation(s)
- Yang Li
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710054, China; National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an Jiaotong University, Xi'an 710054, China; National Innovation Platform (Center) for Industry-Education Integration of Medical Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Heng Li
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Ning Kong
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Siwei Lu
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710054, China; National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an Jiaotong University, Xi'an 710054, China; National Innovation Platform (Center) for Industry-Education Integration of Medical Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Changning Sun
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710054, China; National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an Jiaotong University, Xi'an 710054, China; National Innovation Platform (Center) for Industry-Education Integration of Medical Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Run Tian
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Kunzheng Wang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Dichen Li
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710054, China; National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an Jiaotong University, Xi'an 710054, China; National Innovation Platform (Center) for Industry-Education Integration of Medical Technology, Xi'an Jiaotong University, Xi'an 710054, China.
| | - Pei Yang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
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Ramada DL, de Vries J, Vollenbroek J, Noor N, Ter Beek O, Mihăilă SM, Wieringa F, Masereeuw R, Gerritsen K, Stamatialis D. Portable, wearable and implantable artificial kidney systems: needs, opportunities and challenges. Nat Rev Nephrol 2023:10.1038/s41581-023-00726-9. [PMID: 37277461 DOI: 10.1038/s41581-023-00726-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2023] [Indexed: 06/07/2023]
Abstract
Haemodialysis is life sustaining but expensive, provides limited removal of uraemic solutes, is associated with poor patient quality of life and has a large carbon footprint. Innovative dialysis technologies such as portable, wearable and implantable artificial kidney systems are being developed with the aim of addressing these issues and improving patient care. An important challenge for these technologies is the need for continuous regeneration of a small volume of dialysate. Dialysate recycling systems based on sorbents have great potential for such regeneration. Novel dialysis membranes composed of polymeric or inorganic materials are being developed to improve the removal of a broad range of uraemic toxins, with low levels of membrane fouling compared with currently available synthetic membranes. To achieve more complete therapy and provide important biological functions, these novel membranes could be combined with bioartificial kidneys, which consist of artificial membranes combined with kidney cells. Implementation of these systems will require robust cell sourcing; cell culture facilities annexed to dialysis centres; large-scale, low-cost production; and quality control measures. These challenges are not trivial, and global initiatives involving all relevant stakeholders, including academics, industrialists, medical professionals and patients with kidney disease, are required to achieve important technological breakthroughs.
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Affiliation(s)
- David Loureiro Ramada
- Advanced Organ bioengineering and Therapeutics, Faculty of Science and Technology, Technical Medical Centre, University of Twente, P.O Box 217, 7500, AE Enschede, The Netherlands
| | - Joost de Vries
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jeroen Vollenbroek
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
- BIOS Lab on a Chip Group, MESA + Institute, University of Twente, Hallenweg 15, 7522, NH Enschede, The Netherlands
| | - Nazia Noor
- Advanced Organ bioengineering and Therapeutics, Faculty of Science and Technology, Technical Medical Centre, University of Twente, P.O Box 217, 7500, AE Enschede, The Netherlands
| | - Odyl Ter Beek
- Advanced Organ bioengineering and Therapeutics, Faculty of Science and Technology, Technical Medical Centre, University of Twente, P.O Box 217, 7500, AE Enschede, The Netherlands
| | - Silvia M Mihăilă
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Fokko Wieringa
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Autonomous Therapeutics, IMEC, Eindhoven, The Netherlands
- European Kidney Health Alliance (EKHA), WG3 "Breakthrough Innovation", Brussels, Belgium
| | - Rosalinde Masereeuw
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Karin Gerritsen
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dimitrios Stamatialis
- Advanced Organ bioengineering and Therapeutics, Faculty of Science and Technology, Technical Medical Centre, University of Twente, P.O Box 217, 7500, AE Enschede, The Netherlands.
- European Kidney Health Alliance (EKHA), WG3 "Breakthrough Innovation", Brussels, Belgium.
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Gao X, Liu K, Liu P, Bai X, Li A, Lyu Z, Li Q. Preparation and properties of cellulose acetate graft copolymer‐coated adsorbent resin for hemoperfusion device. J Appl Polym Sci 2023. [DOI: 10.1002/app.53895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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5
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Kang Z, Yang M, Feng X, Liao H, Zhang Z, Du Y. Multifunctional Theranostic Nanoparticles for Enhanced Tumor Targeted Imaging and Synergistic FUS/Chemotherapy on Murine 4T1 Breast Cancer Cell. Int J Nanomedicine 2022; 17:2165-2187. [PMID: 35592098 PMCID: PMC9113557 DOI: 10.2147/ijn.s360161] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/01/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose Triple negative breast cancer (TNBC) is challenging for effective remission due to its very aggressive, extremely metastatic and resistant to conventional chemotherapy. Herein, a multifunctional theranostic nanoparticle was fabricated to enhance tumor targeted imaging and promote focused ultrasound (FUS) ablation and chemotherapy and sonodynamic therapy (SDT). A multi-modal synergistic therapy can improve the therapeutic efficacy and prognosis of TNBC. Methods AS1411 aptamer modified PEG@PLGA nanoparticles encapsulated with perfluorohexane (PFH) and anti-cancer drug doxorubicin (DOX) were constructed (AS1411-DOX/PFH-PEG@PLGA) to enhance tumor targeted imaging to guide ablation and synergistic effect of FUS/chemotherapy. FUS was utilized to trigger the co-release of doxorubicin and simultaneously PFH phase transition and activate DOX for SDT effect. The physicochemical, phase-changeable imaging capability, biosafety of nanoparticles and multi-mode synergistic effects on growth of TNBC were thoroughly evaluated in vivo and in vitro. Results The synthesized AS1411-DOX/PFH-PEG@PLGA (A-DPPs) nanoparticles are uniformly round with an average diameter of 306.03 ± 5.35 nm and the zeta potential of −4.05 ± 0.13 mV, displaying high biosafety and FUS-responsive drug release in vitro and in vivo. AS1411 modified NPs specifically bind to 4T1 cells and elevate the ultrasound contrast agent (UCA) image contrast intensity via PFH phase-transition after FUS exposure. Moreover, the combined treatment of A-DPPs nanoparticles with FUS exhibited significantly higher apoptosis rate, stronger inhibitory effect on 4T1 cell invasion in vitro, induced more reactive oxygen species (ROS), and enhanced anti-tumor effect compared to a single therapy (p < 0.05). Additionally, the joint strategy resulted in more intense cavitation effect and larger ablated areas and reduced energy efficiency factor (EEF) both in vitro and in vivo. Conclusion The multifunctional AS1411-DOX/PFH-PEG@PLGA nanoparticles can perform as a marvelous synergistic agent for enhanced FUS/chemotherapy, promote real-time contrast enhanced US imaging and improve the therapeutic efficacy and prognosis of TNBC.
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Affiliation(s)
- Zhengyue Kang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
| | - Min Yang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
| | - Xiaoling Feng
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
| | - Hongjian Liao
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
| | - Zhifei Zhang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
| | - Yonghong Du
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China
- Correspondence: Yonghong Du, State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, People’s Republic of China, Tel/Fax +86-23-68485021, Email
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Allijn I, du Preez N, Tasior M, Bansal R, Stamatialis D. One-Step Fabrication of Porous Membrane-Based Scaffolds by Air-Water Interfacial Phase Separation: Opportunities for Engineered Tissues. MEMBRANES 2022; 12:453. [PMID: 35629779 PMCID: PMC9145851 DOI: 10.3390/membranes12050453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 11/22/2022]
Abstract
Common methods for fabricating membrane-based scaffolds for tissue engineering with (hydrophobic) polymers include thermal or liquid-phase inversion, sintering, particle leaching, electrospinning and stereolithography. However, these methods have limitations, such as low resolution and pore interconnectivity and may often require the application of high temperatures and/or toxic porogens, additives or solvents. In this work, we aim to overcome some of these limitations and propose a one-step method to produce large porous membrane-based scaffolds formed by air-water interfacial phase separation using water as a pore-forming agent and casting substrate. Here, we provide proof of concept using poly (trimethylene carbonate), a flexible and biocompatible hydrophobic polymer. Membrane-based scaffolds were prepared by dropwise addition of the polymer solution to water. Upon contact, rapid solvent-non-solvent phase separation took place on the air-water interface, after which the scaffold was cured by UV irradiation. We can tune and control the morphology of these scaffolds, including pore size and porosity, by changing various parameters, including polymer concentration, solvent type and temperature. Importantly, human hepatic stellate cells cultured on these membrane-based scaffolds remained viable and showed no signs of pro-inflammatory stress. These results indicate that the proposed air-water interfacial phase separation represents a versatile method for creating porous membrane-based scaffolds for tissue engineering applications.
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Affiliation(s)
- Iris Allijn
- Advanced Organ Bioengineering and Therapeutics, Faculty of Science and Technology, TechMed Center, University of Twente, 7500 AE Enschede, The Netherlands; (N.d.P.); (M.T.); (D.S.)
| | - Nikola du Preez
- Advanced Organ Bioengineering and Therapeutics, Faculty of Science and Technology, TechMed Center, University of Twente, 7500 AE Enschede, The Netherlands; (N.d.P.); (M.T.); (D.S.)
| | - Małgorzata Tasior
- Advanced Organ Bioengineering and Therapeutics, Faculty of Science and Technology, TechMed Center, University of Twente, 7500 AE Enschede, The Netherlands; (N.d.P.); (M.T.); (D.S.)
| | - Ruchi Bansal
- Translational Liver Research, Department of Medical Cell Biophysics, Faculty of Science and Technology, TechMed Center, University of Twente, 7500 AE Enschede, The Netherlands;
| | - Dimitrios Stamatialis
- Advanced Organ Bioengineering and Therapeutics, Faculty of Science and Technology, TechMed Center, University of Twente, 7500 AE Enschede, The Netherlands; (N.d.P.); (M.T.); (D.S.)
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Gao C, Zhang Q, Yang Y, Li Y, Lin W. Recent trends in therapeutic application of engineered blood purification materials for kidney disease. Biomater Res 2022; 26:5. [PMID: 35120554 PMCID: PMC8815201 DOI: 10.1186/s40824-022-00250-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/10/2022] [Indexed: 12/11/2022] Open
Abstract
Blood purification is a commonly used method to remove excess metabolic waste in the blood in renal replacement therapy. The sufficient removal of these toxins from blood can reduce complications and improve survival lifetime in dialysis patients. However, the current biological blood purification materials in clinical practice are not ideal, where there is an unmet need for producing novel materials that have better biocompatibility, reduced toxicity, and, in particular, more efficient toxin clearance rates and a lower cost of production. Given this, this review has carefully summarized newly developed engineered different structural biomedical materials for blood purification in terms of types and structure characteristics of blood purification materials, the production process, as well as interfacial chemical adsorption properties or mechanisms. This study may provide a valuable reference for fabricating a user-friendly purification device that is more suitable for clinical blood purification applications in dialysis patients.
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Affiliation(s)
- Cui Gao
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China
| | - Qian Zhang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China
| | - Yi Yang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China.
- Department of Nephology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
| | - Yangyang Li
- Key Laboratory of Women's Reproductive Health Research of Zhejiang Province, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China.
- Cancer Center, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
| | - Weiqiang Lin
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China.
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Chen YA, Ou SM, Lin CC. Influence of Dialysis Membranes on Clinical Outcomes: From History to Innovation. MEMBRANES 2022; 12:membranes12020152. [PMID: 35207074 PMCID: PMC8876340 DOI: 10.3390/membranes12020152] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/20/2022] [Indexed: 12/18/2022]
Abstract
Dialysis membranes were traditionally classified according to their material compositions (i.e., as cellulosic or synthetic) and on the basis of the new concept of the sieving coefficient (determined by the molecular weight retention onset and molecular weight cut-off). The advantages of synthetic polymer membranes over cellulose membranes are also described on the basis of their physical, chemical, and structural properties. Innovations of dialysis membrane in recent years include the development of medium cutoff membranes; graphene oxide membranes; mixed-matrix membranes; bioartificial kidneys; and membranes modified with vitamin E, lipoic acid, and neutrophil elastase inhibitors. The current state of research on these membranes, their effects on clinical outcomes, the advantages and disadvantages of their use, and their potential for clinical use are outlined and described.
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Affiliation(s)
- Yee-An Chen
- Department of Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
- Department of Medicine, Division of Nephrology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Shuo-Ming Ou
- Department of Medicine, Division of Nephrology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
- Correspondence: (S.-M.O.); (C.-C.L.); Tel.: +886-2-2875-3103 (C.-C.L.); +886-2-2871-2121 (S.-M.O.); Fax: +886-2-2875-7858 (C.-C.L.)
| | - Chih-Ching Lin
- Department of Medicine, Division of Nephrology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
- Correspondence: (S.-M.O.); (C.-C.L.); Tel.: +886-2-2875-3103 (C.-C.L.); +886-2-2871-2121 (S.-M.O.); Fax: +886-2-2875-7858 (C.-C.L.)
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Tchantchaleishvili V. Dimitrios Stamatialis to serve as an Associate Editor of Artificial Organs. Artif Organs 2021; 45:799-800. [PMID: 34155663 DOI: 10.1111/aor.14010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang T, Sun X, Guo X, Zhang J, Yang J, Tao S, Guan J, Zhou L, Han J, Wang C, Yao H, Wang G. Ultraefficiently Calming Cytokine Storm Using Ti 3C 2T x MXene. SMALL METHODS 2021; 5:e2001108. [PMID: 33786372 PMCID: PMC7995020 DOI: 10.1002/smtd.202001108] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/17/2020] [Indexed: 05/17/2023]
Abstract
During the global outbreak of COVID-19 pandemic, "cytokine storm" conditions are regarded as the fatal step resulting in most mortality. Hemoperfusion is widely used to remove cytokines from the blood of severely ill patients to prevent uncontrolled inflammation induced by a cytokine storm. This article discoveres, for the first time, that 2D Ti3C2T x MXene sheet demonstrates an ultrahigh removal capability for typical cytokine interleukin-6. In particular, MXene shows a 13.4 times higher removal efficiency over traditional activated carbon absorbents. Molecular-level investigations reveal that MXene exhibits a strong chemisorption mechanism for immobilizing cytokine interleukin-6 molecules, which is different from activated carbon absorbents. MXene sheet also demonstrates excellent blood compatibility without any deleterious side influence on the composition of human blood. This work can open a new avenue to use MXene sheets as an ultraefficient hemoperfusion absorbent to eliminate the cytokine storm syndrome in treatment of severe COVID-19 patients.
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Affiliation(s)
- Tianyi Wang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Xiaoyu Sun
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Xin Guo
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Jinqiang Zhang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Jian Yang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Shouxuan Tao
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Jun Guan
- Clinical Medical CollegeNorthern Jiangsu People's HospitalYangzhou UniversityYangzhouJiangsu Province225009P. R. China
| | - Lin Zhou
- Clinical Medical CollegeNorthern Jiangsu People's HospitalYangzhou UniversityYangzhouJiangsu Province225009P. R. China
| | - Jie Han
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Chengyin Wang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Hang Yao
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Guoxiu Wang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
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Heparin immobilized graphene oxide in polyetherimide membranes for hemodialysis with enhanced hemocompatibility and removal of uremic toxins. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119068] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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ter Beek O, van Gelder M, Lokhorst C, Hazenbrink D, Lentferink B, Gerritsen K, Stamatialis D. In vitro study of dual layer mixed matrix hollow fiber membranes for outside-in filtration of human blood plasma. Acta Biomater 2021; 123:244-253. [PMID: 33450414 DOI: 10.1016/j.actbio.2020.12.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/17/2022]
Abstract
Hemodialysis mainly removes small water-soluble uremic toxins but cannot effectively remove middle molecules and protein-bound uremic toxins. Besides, the therapy is intermittent leading to fluctuating blood values and fluid status which adversely impacts patients' health. Prolonged hemodialysis (with adequate anticoagulation) could improve the removal of toxins and the development of portable and wearable artificial kidneys could offer more flexibility in the dialysis scheme. This would enhance patients' overall health, autonomy, mobility and flexibility, allowing patients to participate in social and economic life. However, the time that patients' blood is exposed to the dialyzer material is longer during prolonged hemodialysis, and blood clots could obstruct the fiber lumen, resulting in a decrease of the effective membrane surface area available for toxin removal. The outside-in filtration (OIF) mode, wherein blood flows through the inter-fiber space instead of through the fiber lumina, has been applied widely in blood oxygenators to prevent fiber clotting, but not in hemodialysis. In this study, we present for the first time the development of a mixed matrix membrane (MMM) for OIF of human blood plasma. This MMM combines diffusion and adsorption and consists of a polymeric membrane matrix with activated carbon (AC) particles on the inside layer, and a polymeric particle-free layer on the outer fiber layer. Our results show that in vitro MMM fibers for OIF demonstrate superior removal of the protein-bound uremic toxins, indoxyl sulfate and hippuric acid, compared to both earlier MMM fibers designed for inside-out filtration mode and commercial high-flux fibers. STATEMENT OF SIGNIFICANCE: Current hemodialysis therapy cannot effectively remove protein-bound toxins. Prolonged hemodialysis could improve toxin removal. However, during prolonged hemodialysis, blood clots could obstruct the fiber lumen, resulting in decreased effective membrane surface area available for toxin removal. We have prepared, for the first time, dual layer mixed matrix hollow fiber membranes (MMM) for outside-in filtration (OIF). The OIF mode wherein blood would flow through the inter-fiber space instead of through the fiber lumina could prevent fiber clotting. Moreover, the MMMs combine diffusion and adsorption to improve (protein-bound) toxin removal. We believe that the new design of our MMM fibers is an important contribution concerning the development of artificial kidney systems and the improvement of the health and well-being of patients with renal failure.
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Wieringa FP, Sheldon M, Ash SR, Groth T, Boomker J, Oostrom T, Vanholder R. Moving ahead on the Kidney Health Initiative innovation roadmap, a transatlantic progress update. Artif Organs 2020; 44:1125-1134. [PMID: 32969045 DOI: 10.1111/aor.13791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 01/02/2023]
Affiliation(s)
| | | | | | - Thomas Groth
- Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | | | - Tom Oostrom
- Dutch Kidney Foundation, Bussum, The Netherlands
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