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Jahromi AM, Khedri M, Ghasemi M, Omrani S, Maleki R, Rezaei N. Molecular insight into COF monolayers for urea sorption in artificial kidneys. Sci Rep 2021; 11:12085. [PMID: 34103625 PMCID: PMC8187635 DOI: 10.1038/s41598-021-91617-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 05/12/2021] [Indexed: 02/05/2023] Open
Abstract
Urea removal from an aqueous solution is considered a challenge in the biological process. The state of complete kidney destruction is known as an end-stage renal disease (ESRD). Kidney transplant and hemodialysis are the most common methods for confronting ESRD. More recently, wearable artificial kidney (WAK) devices have shown a significant improvement in urea removal performance. However, low efficiency in physical adsorbents is a barrier in developing them. For the first time, the urea adsorption capacity of five types of last-generation covalent organic framework (COF) nanosheets (NSs) was investigated in this study by applying molecular dynamics (MD) simulation tools. To this end, different analyses have been performed to evaluate the performance of each nanoparticle. The MD all-atom (AA) results demonstrated that all introduced COF NSs had urea removal capacity. Among the five NSs, TPA-COF was shown to have the best outcomes. Moreover, coarse-grained (CG) and density functional theory (DFT) simulations were conducted, and the results show that the TPA-COF nanoparticle modified with -OH functional group has even better properties for urea adsorption. The present molecular study sheds new light on COF NSs as an adsorbent for urea removal.
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Affiliation(s)
- Ahmad Miri Jahromi
- grid.510410.10000 0004 8010 4431Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mohammad Khedri
- grid.510410.10000 0004 8010 4431Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mehdi Ghasemi
- grid.510410.10000 0004 8010 4431Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran ,grid.411368.90000 0004 0611 6995Department of Petroleum Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Sina Omrani
- grid.46072.370000 0004 0612 7950Department of Petroleum Engineering, University of Tehran, Tehran, Iran
| | - Reza Maleki
- grid.510410.10000 0004 8010 4431Computational Biology and Chemistry Group (CBCG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- grid.411705.60000 0001 0166 0922Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran ,grid.510410.10000 0004 8010 4431Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran ,grid.411705.60000 0001 0166 0922Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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van Gelder MK, Jong JAW, Folkertsma L, Guo Y, Blüchel C, Verhaar MC, Odijk M, Van Nostrum CF, Hennink WE, Gerritsen KGF. Urea removal strategies for dialysate regeneration in a wearable artificial kidney. Biomaterials 2020; 234:119735. [PMID: 31958714 DOI: 10.1016/j.biomaterials.2019.119735] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/05/2019] [Accepted: 12/25/2019] [Indexed: 12/31/2022]
Abstract
The availability of a wearable artificial kidney (WAK) that provides dialysis outside the hospital would be an important advancement for dialysis patients. The concept of a WAK is based on regeneration of a small volume of dialysate in a closed-loop. Removal of urea, the primary waste product of nitrogen metabolism, is the major challenge for the realization of a WAK since it is a molecule with low reactivity that is difficult to adsorb while it is the waste solute with the highest daily molar production. Currently, no efficient urea removal technology is available that allows for miniaturization of the WAK to a size and weight that is acceptable for patients to carry. Several urea removal strategies have been explored, including enzymatic hydrolysis by urease, electro-oxidation and sorbent systems. However, thus far, these methods have toxic side effects, limited removal capacity or slow removal kinetics. This review discusses different urea removal strategies for application in a wearable dialysis device, from both a chemical and a medical perspective.
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Affiliation(s)
- Maaike K van Gelder
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, the Netherlands
| | - Jacobus A W Jong
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, the Netherlands; Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, the Netherlands
| | - Laura Folkertsma
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, the Netherlands; BIOS-Lab on a Chip Group, MESA+ Institute of Nanotechnology, Technical Medical Center, Max Planck Center for Complex Fluid Dynamics, University of Twente, 7522 NH, Enschede, the Netherlands
| | - Yong Guo
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, the Netherlands
| | | | - Marianne C Verhaar
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, the Netherlands
| | - Mathieu Odijk
- BIOS-Lab on a Chip Group, MESA+ Institute of Nanotechnology, Technical Medical Center, Max Planck Center for Complex Fluid Dynamics, University of Twente, 7522 NH, Enschede, the Netherlands
| | - Cornelus F Van Nostrum
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, the Netherlands
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, the Netherlands
| | - Karin G F Gerritsen
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, the Netherlands.
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Xue C, Wilson LD. Kinetic study on urea uptake with chitosan based sorbent materials. Carbohydr Polym 2015; 135:180-6. [PMID: 26453866 DOI: 10.1016/j.carbpol.2015.08.090] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/26/2015] [Accepted: 08/27/2015] [Indexed: 11/16/2022]
Abstract
A one-pot kinetic uptake study of urea in aqueous solution with various chitosan sorbent materials such as pristine chitosan, cross-linked chitosan with glutaraldehyde from low (C-1) to higher (C-2) glutaraldehyde content, and a Cu(II) complex of a glutaraldehyde cross-linked chitosan material (C-3) is reported herein. The kinetic uptake profiles were analyzed by the pseudo-first order (PFO) and pseudo-second-order (PSO) models, respectively. The uptake rate constant of urea and the sorption capacity (qe) of high molecular weight (HMW) chitosan, C-1, C-2, and C-3 were best described by the PFO model. The uptake rate constant of urea with the various sorbents is listed in ascending order: HMW chitosan<C-1<C-2≈C-3. The qe values (mg urea/g sorbent) for the sorbent/urea systems are listed in ascending order: HMW chitosan (48.1)≈C-1 (44.7)<C-2 (51.3)<C-3 (66.4mg/g), revealing good agreement with uptake values obtained independently at equilibrium conditions. Cross-linked chitosan displays relatively rapid urea uptake and greater adsorption capacity when compared with pristine chitosan. The observed trends are in agreement with the greater surface accessibility and pore structure properties of cross-linked chitosan based on scanning electron microscopy studies. These results further illustrate the rational design of chitosan-based materials for the controlled uptake of urea in aquatic environments.
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Affiliation(s)
- Chen Xue
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada.
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