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Kadac-Czapska K, Jutrzenka Trzebiatowska P, Mazurkiewicz M, Kowalczyk P, Knez E, Behrendt M, Mahlik S, Zaleska-Medynska A, Grembecka M. Isolation and identification of microplastics in infant formulas - A potential health risk for children. Food Chem 2024; 440:138246. [PMID: 38154286 DOI: 10.1016/j.foodchem.2023.138246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/25/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Microplastics (MPs) are plastic particles between 0.1 and 5,000 µm in size that can contaminate food. Unfortunately, to date, little attention has been paid to analyzing the presence of such particles in baby foods. The present study aimed to determine the degree of contamination of infant formula with MPs. A total of thirty products were subjected to analysis. The research methodology used included the isolation of plastic particles, identification and characterization of MPs using advanced microscopic and spectroscopic techniques. Microplastics were detected in all tested samples. The most frequently identified polymers were polyamide, polyethylene, polypropylene, and poly(ethylene terephthalate). The particles exhibited diverse forms, including fibers, fragments, and films, displaying a range of colors such as colorless, black, and brown particles. Furthermore, the daily intake of MPs by children fed exclusively infant formula was estimated to be approximately 49 ± 32 MPs. This poses a potential health risk for the youngest.
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Affiliation(s)
- Kornelia Kadac-Czapska
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland
| | | | | | - Piotr Kowalczyk
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland
| | - Eliza Knez
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland
| | - Mirosław Behrendt
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, 80-308 Gdańsk, Poland
| | - Sebastian Mahlik
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, 80-308 Gdańsk, Poland
| | - Adriana Zaleska-Medynska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdańsk, 80-308 Gdańsk, Poland
| | - Małgorzata Grembecka
- Department of Bromatology, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland.
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2
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Kowalczyk P, Furmaniak S, Neimark AV, Burian A, Terzyk AP. Surface-Constrained Metropolis Monte Carlo: Simulation of Reactions on Triply Periodic Minimal Surfaces. J Phys Chem A 2024; 128:1725-1735. [PMID: 38408339 DOI: 10.1021/acs.jpca.3c08203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Triply periodic minimal surfaces (TPMS) inspired by nature serve as a foundation for developing novel nanomaterials, such as templated silicas, graphene sponges, and schwarzites, with customizable optical, poroelastic, adsorptive, catalytic, and other properties. Computer simulations of reactions on TPMS using reactive intermolecular potentials hold great promise for constructing and screening potential TPMS with the desired properties. Here, we developed an off-lattice, surface-constrained Metropolis Monte Carlo (SC-MMC) algorithm that utilized a temperature quench process. The presented SC-MMC algorithm was used to investigate the process of graphitization reactions on the Schwarz primitive, Schwarz diamond, and Schoen gyroid TPMS, all with a cubic lattice parameter of 8 nm. We show that the optimized carbon TPMS exhibits a low energy, approximately -7.1 eV/atom, comparable to that of graphite and diamond crystals, along with a variety of topological defects. Furthermore, these structures showcase extensive and smooth surfaces characterized by a negative discrete Gaussian curvature, a distinctive feature indicative of an interconnected morphology. They possess specific surface areas of ∼2700 m2/g, comparable to graphene, and exhibit a significant porosity of around 90%. The theoretical X-ray correlation functions and nitrogen adsorption isotherms confirm that the constructed TPMS exhibit remarkably similar surface properties, although the pore space topology varies significantly.
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Affiliation(s)
- Piotr Kowalczyk
- School of Mathematics, Statistics, Chemistry, and Physics, Murdoch University, Perth, WA 6150, Australia
| | - Sylwester Furmaniak
- Stanisław Staszic State University of Applied Sciences in Piła, Podchorążych Street 10, 64-920 Piła, Poland
| | - Alexander V Neimark
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Andrzej Burian
- A. Chełkowski Institute of Physics, University of Silesia in Katowice, 41-500 Chorzów, Poland
| | - Artur P Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
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3
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Rybak E, Kowalczyk P, Czarnocka-Śniadała S, Wojasiński M, Trzciński J, Ciach T. Microfluidic-Assisted Formulation of ε-Polycaprolactone Nanoparticles and Evaluation of Their Properties and In Vitro Cell Uptake. Polymers (Basel) 2023; 15:4375. [PMID: 38006099 PMCID: PMC10674307 DOI: 10.3390/polym15224375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
The nanoprecipitation method was used to formulate ε-polycaprolactone (PCL) into fluorescent nanoparticles. Two methods of mixing the phases were evaluated: introducing the organic phase into the aqueous phase dropwise and via a specially designed microfluidic device. As a result of the nanoprecipitation process, fluorescein-loaded nanoparticles (NPs) with a mean diameter of 127 ± 3 nm and polydispersity index (PDI) of 0.180 ± 0.009 were obtained. The profiles of dye release were determined in vitro using dialysis membrane tubing, and the results showed a controlled release of the dye from NPs. In addition, the cytotoxicity of the NPs was assessed using an MTT assay. The PCL NPs were shown to be safe and non-toxic to L929 and MG63 cells. The results of the present study have revealed that PCL NPs represent a promising system for developing new drug delivery systems.
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Affiliation(s)
- Ewa Rybak
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (P.K.); (M.W.); (J.T.); (T.C.)
| | - Piotr Kowalczyk
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (P.K.); (M.W.); (J.T.); (T.C.)
| | | | - Michał Wojasiński
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (P.K.); (M.W.); (J.T.); (T.C.)
| | - Jakub Trzciński
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (P.K.); (M.W.); (J.T.); (T.C.)
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland; (P.K.); (M.W.); (J.T.); (T.C.)
- Nanosanguis S.A., Rakowiecka 36, 02-532 Warsaw, Poland;
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4
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Kowalczyk P, Kopeć K, Wojasiński M, Jaroszewicz J, Ciach T. Composite microgranular scaffolds with surface modifications for improved initial osteoblastic cell proliferation. Biomater Adv 2023; 151:213489. [PMID: 37267750 DOI: 10.1016/j.bioadv.2023.213489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/22/2023] [Accepted: 05/28/2023] [Indexed: 06/04/2023]
Abstract
Polyester-based granular scaffolds are a potent material for tissue engineering due to their porosity, controllable pore size, and potential to be molded into various shapes. Additionally, they can be produced as composite materials, e.g., mixed with osteoconductive β-tricalcium phosphate or hydroxyapatite. Such polymer-based composite materials often happen to be hydrophobic, which disrupts cell attachment and decreases cell growth on the scaffold, undermining its primary function. In this work, we propose the experimental comparison of three modification techniques for granular scaffolds to increase their hydrophilicity and cell attachment. Those techniques include atmospheric plasma treatment, polydopamine coating, and polynorepinephrine coating. Composite polymer/β-tricalcium phosphate granules have been produced in a solution-induced phase separation (SIPS) process using commercially available biomedical polymers: poly(lactic acid), poly(lactic-co-glycolic acid), and polycaprolactone. We used thermal assembly to prepare cylindrical scaffolds from composite microgranules. Atmospheric plasma treatment, polydopamine coating, and polynorepinephrine coating showed similar effects on polymer composites' hydrophilic and bioactive properties. All modifications significantly increased human osteosarcoma MG-63 cell adhesion and proliferation in vitro compared to cells cultured on unmodified materials. In the case of polycaprolactone/β-tricalcium phosphate scaffolds, modifications were the most necessary, as unmodified polycaprolactone-based material disrupted the cell attachment. Modified polylactide/β-tricalcium phosphate scaffold supported excellent cell growth and showed ultimate compressive strength exceeding this of human trabecular bone. This suggests that all investigated modification techniques can be used interchangeably for increasing wettability and cell attachment properties of various scaffolds for medical applications, especially those with high surface and volumetric porosity, like granular scaffolds.
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Affiliation(s)
- Piotr Kowalczyk
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Ludwika Waryńskiego 1, 00-645 Warsaw, Poland; Centre for Advanced Materials and Technology CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland.
| | - Kamil Kopeć
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Ludwika Waryńskiego 1, 00-645 Warsaw, Poland
| | - Michał Wojasiński
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Ludwika Waryńskiego 1, 00-645 Warsaw, Poland
| | - Jakub Jaroszewicz
- Warsaw University of Technology, Faculty of Material Science and Engineering, Wołoska 141, 02-507 Warsaw, Poland
| | - Tomasz Ciach
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Ludwika Waryńskiego 1, 00-645 Warsaw, Poland; Centre for Advanced Materials and Technology CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
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5
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Dąbrowska-Szewczyk E, Zawadzka A, Kowalczyk P, Podgórski R, Saworska G, Głowacki M, Kukołowicz P, Brzozowska B. Low-density 3D-printed boluses with honeycomb infill 3D-printed boluses in radiotherapy. Phys Med 2023; 110:102600. [PMID: 37167778 DOI: 10.1016/j.ejmp.2023.102600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/05/2023] [Accepted: 04/30/2023] [Indexed: 05/13/2023] Open
Abstract
PURPOSE Dosimetric characteristics of 3D-printed plates using different infill percentage and materials was the purpose of our study. METHODS Test plates with 5%, 10%, 15% and 20% honeycomb structure infill were fabricated using TPU and PLA polymers. The Hounsfield unit distribution was determined using a Python script. Percentage Depth Dose (PDD) distribution in the build-up region was measured with the Markus plane-parallel ionization chamber for an open 10x10 cm2 field of 6 MV. PDD was measured at a depth of 1 mm, 5 mm, 10 mm and 15 mm. Measurements were compared with Eclipse treatment planning system calculations using AAA and Acuros XB algorithms. RESULTS The mean HU for CT scans of 3D-printed TPU plates increased with percentage infill increase from -739 HU for 5% to -399 HU for 20%. Differences between the average HU for TPU and PLA did not exceed 2% for all percentage infills. Even using a plate with the lowest infill PDD at 1 mm depth increase from 44.7% (without a plate) to 76.9% for TPU and 76.6% for PLA. Infill percentage did not affect the dose at depths greater than 5 mm. Differences between measurements and TPS calculations were less than 4.1% for both materials, regardless of the infill percentage and depth. CONCLUSIONS The use of 3D-printed light boluses increases the dose in the build-up region, which was shown based on the dosimetric measurements and TPS calculations.
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Affiliation(s)
- Edyta Dąbrowska-Szewczyk
- Biomedical Physics Division, Faculty of Physics, University of Warsaw, 5 L. Pasteur Street, 02-093 Warsaw, Poland; Medical Physics Department, The Maria Skłodowska-Curie National Research Institute of Oncology in Warsaw, 5 WK Roentgen Street, 02-781 Warsaw, Poland
| | - Anna Zawadzka
- Medical Physics Department, The Maria Skłodowska-Curie National Research Institute of Oncology in Warsaw, 5 WK Roentgen Street, 02-781 Warsaw, Poland
| | - Piotr Kowalczyk
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Waryńskiego 1, 00-645 Warsaw, Poland; Centre of Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
| | - Rafał Podgórski
- Warsaw University of Technology, Faculty of Chemical and Process Engineering, Department of Biotechnology and Bioprocess Engineering, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Gabriela Saworska
- Biomedical Physics Division, Faculty of Physics, University of Warsaw, 5 L. Pasteur Street, 02-093 Warsaw, Poland
| | - Maksymilian Głowacki
- Biomedical Physics Division, Faculty of Physics, University of Warsaw, 5 L. Pasteur Street, 02-093 Warsaw, Poland
| | - Paweł Kukołowicz
- Medical Physics Department, The Maria Skłodowska-Curie National Research Institute of Oncology in Warsaw, 5 WK Roentgen Street, 02-781 Warsaw, Poland
| | - Beata Brzozowska
- Biomedical Physics Division, Faculty of Physics, University of Warsaw, 5 L. Pasteur Street, 02-093 Warsaw, Poland.
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6
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Kowalczyk P, Wojasiński M, Jaroszewicz J, Kopeć K, Ciach T. Controlled formation of highly porous polylactic acid‑calcium phosphate granules with defined structure. Biomater Adv 2022; 144:213195. [PMID: 36434927 DOI: 10.1016/j.bioadv.2022.213195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 10/08/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
Synthetic bone repair materials are becoming increasingly popular in tissue engineering as a replacement for autografts and human/animal-based bone grafts. The biomedical application requires precise control over the material composition and structure, as well as over the size of granulate used for filling the bone defects, as the pore size and interconnectivity affect the regeneration process. This paper proposes a process of alloplastic and biodegradable polylactic acid/β-tricalcium phosphate granulates preparation and its parameters described. Using solvent-induced phase separation technique, porous spheres have been obtained in various sizes and morphologies. The design of the experiment's approach generated an experimental plan for further statistical modeling using the resulting data. The statistical modeling approach to the data from conducting a designed set of experiments allowed analysis of the influence of process parameters on the properties of the resulting granules. We confirmed that the content of β-tricalcium phosphate plays the most significant role in the size distribution of prepared granulate. The shape of the particles becomes less spherical with higher phosphate concentration in the emulsion. The proposed technique allows preparing porous granulates in the 0.2-1.8 mm diameter range, where granules' mean diameter and sphericity are tunable with polymer and phosphate concentrations. The granulate created a potentially implantable scaffold for resected bone regeneration, as cytotoxicity tests assured the material is non-cytotoxic in vitro, and human mesenchymal stem cells have been cultured on the surface of granulates. Results from cell cultures seeded on the Resomer LR 706S granulates were the most promising.
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Affiliation(s)
- Piotr Kowalczyk
- Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland.
| | - Michał Wojasiński
- Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Jakub Jaroszewicz
- Faculty of Material Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland
| | - Kamil Kopeć
- Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Tomasz Ciach
- Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
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Kowalczyk P, Tomczyk T, Arenciba J, Milewicz M, Skalska J, Trębicka D, Poniatowska K, Adamczyk J, Wójcik K, Cottens S, Dobrzański P, Biśta M, Brach K, Drewniak-Świtalska M, Tracz A, Pastok M, Górecka K, Chrzanowska K, Kaczanowska K, Walczak M. 36P Preclinical evaluation of novel MCL-1 degrader in in vitro and in vivo cancer models. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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8
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Tomczyk T, Arencibia J, Milewicz M, Trębicka D, Skalska J, Poniatowska K, Adamczyk J, Wójcik K, Cottens S, Kowalczyk P, Dobrzański P, Biśta M, Brach K, Świtalska-Drewniak M, Tracz A, Pastok M, Górecka-Minakowska K, Chrzanowska K, Takagi T, Walczak M. Development of selective MCL-1 heterobifunctional degraders. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Perek-Polnik M, Cochrane A, Chojnacka M, Drogosiewicz M, Filipek I, Swieszkowska E, Tarasinska M, Kowalczyk P, Abdelbaki MS, Dembowska-Bagińska B. MEDB-26. Outcomes of children with standard-risk and high-risk medulloblastoma treated with pre-irradiation chemotherapy and risk-adapted craniospinal irradiation: a report on patients from the Polish Pediatric Neuro-oncology Group. Neuro Oncol 2022. [PMCID: PMC9165299 DOI: 10.1093/neuonc/noac079.400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND: The last two decades have witnessed several efforts to minimize the adverse sequelae of craniospinal irradiation (CSI), a standard of care treatment modality in medulloblastoma. This has been accomplished by adding chemotherapy to the treatment backbone. The use of pre-irradiation chemotherapy has also been previously reported. In one of the largest studies to date, we analyze treatment outcomes in children with standard and high-risk medulloblastoma treated with pre-irradiation chemotherapy followed by reduced-dose radiotherapy in SR and maintenance chemotherapy. METHODS: Data from the Polish Pediatric Neuro-oncology Group (PPNG) was analyzed in patients greater than 3 years of age with newly-diagnosed medulloblastoma. RESULTS : Among 138 patients, median age at diagnosis was 7.9 years and median follow-up was 5.5 years. Comprehensive molecular subgrouping was not available for all patients at the time of data collection. Of 60 standard-risk patients, there was pre-irradiation disease recurrence in one patient. One patient expired prior to radiation due to metastatic disease. Of 78 high-risk patients, one had pre-irradiation recurrence. Overall survival (OS) for high-risk patients at 3 and 5 years (± standard error) was 89.2 ± 4.0% and 81.3 ± 5.8%, respectively. OS for standard-risk patients at 3 and 5 years was 92.5 ± 3.8% and 88.2 ± 5.1%, respectively. Among high-risk patients, event-free survival (EFS) at 3 and 5 years was 82.5 ± 5.3% and 81.0 ± 5.6%. Among standard-risk patients, 3-year EFS was 89.2 ± 4.6% and 5-year EFS was 86.8 ± 5.3%. CONCLUSION : This study demonstrates promising survival outcomes in pediatric medulloblastoma patients treated with pre-irradiation chemotherapy followed by reduced-dose CSI and adjuvant chemotherapy. Such an approach may be helpful if delays in starting radiotherapy are expected, which is usually the case in many institutions around the globe.
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Affiliation(s)
- Marta Perek-Polnik
- The Children’s Memorial Health Institute, Department of Oncology , Warsaw , Poland
| | - Anne Cochrane
- Washington University School of Medicine in St. Louis, St. Louis , Missouri , USA
| | - M Chojnacka
- Maria Sklodowska-Curie National Research Institute of Oncology, Pediatric Radiotherapy Centre , Warsaw , Poland
| | - M Drogosiewicz
- The Children’s Memorial Health Institute, Department of Oncology , Warsaw , Poland
| | - I Filipek
- The Children’s Memorial Health Institute, Department of Oncology , Warsaw , Poland
| | - E Swieszkowska
- The Children’s Memorial Health Institute, Department of Oncology , Warsaw , Poland
| | - M Tarasinska
- The Children’s Memorial Health Institute, Department of Oncology , Warsaw , Poland
| | - P Kowalczyk
- The Children’s Memorial Health Institute, Department of Neurosurgery , Warsaw , Poland
| | - Mohamed S Abdelbaki
- Washington University School of Medicine in St. Louis, St. Louis , Missouri , USA
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10
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Kowalczyk P, Grochola A, Jastrzebski W. Study of the 71Π u state of sodium dimer by polarisation labelling spectroscopy. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2027536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- P. Kowalczyk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
| | - A. Grochola
- Institute of Physics, Polish Academy of Sciences, Warsaw, Poland
| | - W. Jastrzebski
- Institute of Physics, Polish Academy of Sciences, Warsaw, Poland
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11
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Kowalczyk P, Zaczek Z, Osowska S, Sobocki J. Analysis of mitochondrial and genomic DNA damage induced by lipid peroxidation in parenteral nutrition. Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Kowalczyk P, Zaczek Z, Osowska S, Sobocki J. Fatty acids - friend or enemy in oxidative stress? Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Szymanski G, Suzuki Y, Ohba T, Sulikowski B, Góra-Marek K, Tarach KA, Koter S, Kowalczyk P, Ilnicka A, Zięba M, Echegoyen L, Terzyk AP, Plonska-Brzezinska ME. Linking the Defective Structure of Boron-Doped Carbon Nano-Onions with Their Catalytic Properties: Experimental and Theoretical Studies. ACS Appl Mater Interfaces 2021; 13:51628-51642. [PMID: 34677930 PMCID: PMC8569677 DOI: 10.1021/acsami.1c12126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
Defects are widely present in nanomaterials, and they are recognized as the active sites that tune surface properties in the local region for catalysis. Recently, the theory linking defect structures and catalytic properties of nanocatalysts has been most commonly described. In this study, we prepared boron-doped carbon nano-onions (B-CNOs) by applying an annealing treatment of ultradispersed nanodiamond particles and amorphous boron. These experimental conditions guarantee doping of CNOs with boron atoms in the entire carbon nanostructure, thereby ensuring structural homogeneity. In our research, we discuss the correlations between defective structures of B-CNOs with their catalytic properties toward SO2 and tert-butanol dehydration. We show that there is a close relationship between the catalytic properties of the B-CNOs and the experimental conditions for their formation. It is not only the mass of the substrates used for the formation of B-CNOs that is crucial, that is, the mass ratio of NDs to amorphous B, but also the process, including temperature and gas atmosphere. As it was expected, all B-CNOs demonstrated significant catalytic activity in HSO3- oxidation. However, the subsequent annealing in an air atmosphere diminished their catalytic activity. Unfortunately, no direct relationship between the catalytic activity and the presence of heteroatoms on the B-CNO surface was observed. There was a linear dependence between catalytic activity and Raman reactivity factors for each of the B-CNO materials. In contrast to SO2 oxidation, the B-CNO-a samples showed higher catalytic activity in tert-butanol dehydration due to the presence of Brønsted and Lewis acid sites. The occurence of three types of boron-Lewis sites differing in electron donor properties was confirmed using quantitative infrared spectroscopic measurements of pyridine adsorption.
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Affiliation(s)
- Grzegorz
S. Szymanski
- Faculty
of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland
| | - Yuka Suzuki
- Graduate
School of Science, Chiba University, 1-33 Yayoi, Inage, 263-8522 Chiba, Japan
| | - Tomonori Ohba
- Graduate
School of Science, Chiba University, 1-33 Yayoi, Inage, 263-8522 Chiba, Japan
| | - Bogdan Sulikowski
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Science, Niezapominajek 8, 30-239 Cracow, Poland
| | - Kinga Góra-Marek
- Faculty
of Chemistry, Jagiellonian University in
Kraków, Gronostajowa
Street 2, 30-387 Kraków, Poland
| | - Karolina A. Tarach
- Faculty
of Chemistry, Jagiellonian University in
Kraków, Gronostajowa
Street 2, 30-387 Kraków, Poland
| | - Stanislaw Koter
- Faculty
of Chemistry, Department of Physical Chemistry, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland
| | - Piotr Kowalczyk
- School
of
Engineering and Information Technology, Murdoch University, Murdoch, Western Australia 6150, Australia
| | - Anna Ilnicka
- Faculty
of Chemistry, Nicolaus Copernicus University
in Torun, Gagarin Street 7, 87-100 Torun, Poland
| | - Monika Zięba
- Faculty
of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland
| | - Luis Echegoyen
- Department
of Chemistry, University of Texas at El
Paso, 500 W. University Avenue, El Paso, Texas 79968, United
States
| | - Artur P. Terzyk
- Faculty
of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin Street 7, 87-100 Torun, Poland
| | - Marta E. Plonska-Brzezinska
- Department
of Organic Chemistry, Faculty of Pharmacy with the Division of Laboratory
Medicine, Medical University of Bialystok, Mickiewicza 2A, 15-222 Bialystok, Poland
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14
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Korczeniewski E, Bryk P, Koter S, Kowalczyk P, Kujawski W, Kujawa J, Terzyk AP. Revisiting Wetting, Freezing, and Evaporation Mechanisms of Water on Copper. ACS Appl Mater Interfaces 2021; 13:37893-37903. [PMID: 34319693 PMCID: PMC8397239 DOI: 10.1021/acsami.1c09733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Wetting of metal surfaces plays an important role in fuel cells, corrosion science, and heat-transfer devices. It has been recently stipulated that Cu surface is hydrophobic. In order to address this issue we use high purity (1 1 1) Cu prepared without oxygen, and resistant to oxidation. Using the modern Fringe Projection Phase-Shifting method of surface roughness determination, together with a new cell allowing the vacuum and thermal desorption of samples, we define the relation between the copper surface roughness and water contact angle (WCA). Next by a simple extrapolation, we determine the WCA for the perfectly smooth copper surface (WCA = 34°). Additionally, the kinetics of airborne hydrocarbons adsorption on copper was measured. It is shown for the first time that the presence of surface hydrocarbons strongly affects not only WCA, but also water droplet evaporation and the temperature of water droplet freezing. The different behavior and features of the surfaces were observed once the atmosphere of the experiment was changed from argon to air. The evaporation results are well described by the theoretical framework proposed by Semenov, and the freezing process by the dynamic growth angle model.
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Affiliation(s)
- Emil Korczeniewski
- Faculty
of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarina Street 7, 87-100 Toruń, Poland
| | - Paweł Bryk
- Faculty
of Chemistry, Chair of Theoretical Chemistry, Maria Curie - Skłodowska University, 20−031 Lublin, Poland
| | - Stanisław Koter
- Faculty
of Chemistry, Department of Physical Chemistry and Physical Chemistry
of Polymers, Nicolaus Copernicus University
in Toruń, Gagarina
Street 7, 87-100 Toruń, Poland
| | - Piotr Kowalczyk
- College
of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia 6150, Australia
| | - Wojciech Kujawski
- Faculty
of Chemistry, Department of Physical Chemistry and Physical Chemistry
of Polymers, Nicolaus Copernicus University
in Toruń, Gagarina
Street 7, 87-100 Toruń, Poland
| | - Joanna Kujawa
- Faculty
of Chemistry, Department of Physical Chemistry and Physical Chemistry
of Polymers, Nicolaus Copernicus University
in Toruń, Gagarina
Street 7, 87-100 Toruń, Poland
| | - Artur P. Terzyk
- Faculty
of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarina Street 7, 87-100 Toruń, Poland
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15
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Szymański GS, Kaczmarek-Kędziera A, Zięba M, Kowalczyk P, Terzyk AP. Insight into the Mechanisms of Low Coverage Adsorption of N-Alcohols on Single Walled Carbon Nanohorn. Materials (Basel) 2021; 14:ma14144001. [PMID: 34300920 PMCID: PMC8307151 DOI: 10.3390/ma14144001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/12/2021] [Accepted: 07/14/2021] [Indexed: 01/05/2023]
Abstract
We report for the first time the chromatographic study of n-alcohols (from methanol to butanol) adsorption on single walled carbon nanohorn (SWCNH). Using measured temperature dependence of adsorption isotherms (373-433 K) the isosteric adsorption enthalpy is calculated and compared with the data reported for a graphite surface. It is concluded that a graphite surface is more homogeneous, and the enthalpy of adsorption on SWCNHs at zero coverage correlates well with molecular diameter and polarizability, suggesting leading role of dispersive interactions, i.e., no heteroatoms presence in the walls of SWCNH structures. Next using modern DFT approach we calculate the energy of n-alcohols interactions with a graphene sheet and with a single nanocone finally proposing a more realistic-double nanocone model. Obtained results suggest alcohols entrapping between SWCNH with OH groups located toward nanocones ends, leading to the conclusions about very promising future applications of SWCNHs in catalytic reactions with participation of n-alcohols.
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Affiliation(s)
- Grzegorz Stanisław Szymański
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin Street 7, 87-100 Toruń, Poland; (G.S.S.); (M.Z.)
| | - Anna Kaczmarek-Kędziera
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarin Street 7, 87-100 Toruń, Poland;
| | - Monika Zięba
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin Street 7, 87-100 Toruń, Poland; (G.S.S.); (M.Z.)
| | - Piotr Kowalczyk
- College of Science, Health, Engineering and Education, School of Engineering and Information Technology, Murdoch University, Perth, WA 6150, Australia;
| | - Artur Piotr Terzyk
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin Street 7, 87-100 Toruń, Poland; (G.S.S.); (M.Z.)
- Correspondence: ; Tel.: +48-61-14-371
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16
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Kowalczyk P, Ligas B, Skrzypczak D, Mikula K, Izydorczyk G, Witek-Krowiak A, Moustakas K, Chojnacka K. Biosorption as a method of biowaste valorization to feed additives: RSM optimization. Environ Pollut 2021; 268:115937. [PMID: 33158622 DOI: 10.1016/j.envpol.2020.115937] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/14/2020] [Accepted: 10/24/2020] [Indexed: 06/11/2023]
Abstract
The aim of this work was to prepare an innovative microelemental feed additive for laying hens, based on waste biomass from the agricultural sector (alfalfa and goldenrod after CO2 extraction in supercritical state). The process was optimized by Response Surface Methodology (RSM) and the most favourable enrichment conditions were selected for Cu(II), Mn(II) and Zn(II) ions: pH - 5, sorbate concentration of Cu(II), Mn(II), Zn(II) - 10.0 mg/L for alfalfa and 10.7 mg/L for goldenrod and biomass dose - 0.1 g/L. Physicochemical properties of biomass were studied and functional groups involved in the binding of Cu(II), Mn(II), Zn(II) ions were determined (mainly carboxylic and hydroxylic groups). An interesting and unique element of this work is the verification of the properties of prepared feed additives in conditions simulating the digestive tract of animals. The release of components in solutions simulating conditions in the intestine and stomach (pH 11 and pH 1) was tested (in vitro tests). The best desorption results were achieved at a strongly acidic pH which corresponds to the stomach environment: 9.80, 14.4% Cu(II), 69.0, 66.9% (Zn), 46.5, 31.9 Mn(II) for alfalfa and goldenrod, respectively. It was concluded that the biomass enriched with micronutrients in biosorption has the potential as a feed additive for sustainable agriculture.
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Affiliation(s)
- P Kowalczyk
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
| | - B Ligas
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
| | - D Skrzypczak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland.
| | - K Mikula
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
| | - G Izydorczyk
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
| | - A Witek-Krowiak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
| | - K Moustakas
- School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zographou Campus, GR-15780, Athens, Greece
| | - K Chojnacka
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372, Wrocław, Poland
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17
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Zieba W, Olejnik P, Koter S, Kowalczyk P, Plonska-Brzezinska ME, Terzyk AP. Opening the internal structure for transport of ions: improvement of the structural and chemical properties of single-walled carbon nanohorns for supercapacitor electrodes. RSC Adv 2020; 10:38357-38368. [PMID: 35517569 PMCID: PMC9057265 DOI: 10.1039/d0ra07748h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/07/2020] [Indexed: 01/29/2023] Open
Abstract
We investigated the electrochemical performance of single-walled carbon nanohorns (SWCNHs) for use as supercapacitor electrodes. For the first time, we used acid-treatment for oxidation of SWCNHs and hole creation in their structure. A detailed study was performed on the correlation between the oxidation of SWCNHs via acid treatment and variable acid treatment times, the structural properties of the oxidized carbon nanostructures, and the specific capacitance of the SWCNH electrodes. We showed that simple functionalization of carbon nanostructures under controlled conditions leads to an almost 3-fold increase in their specific capacitance (from 65 to 180 F g−1 in 0.1 M H2SO4). This phenomenon indicates higher accessibility of the surface area of the electrodes by electrolyte ions as a result of gradual opening of the SWCNH internal channels. The correlation between the oxidation of single-walled carbon nanohorns (SWCNHs) via acid treatment and the electrochemical properties of the SWCNH electrodes is presented.![]()
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Affiliation(s)
- Wojciech Zieba
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń Gagarin Street 7 87-100 Toruń Poland
| | - Piotr Olejnik
- Department of Organic Chemistry, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Bialystok Mickiewicza 2A 15-222 Bialystok Poland
| | - Stanislaw Koter
- Faculty of Chemistry, Department of Physical Chemistry, Nicolaus Copernicus University in Toruń Gagarin Street 7 87-100 Toruń Poland
| | - Piotr Kowalczyk
- College of Science, Health, Engineering and Education, Murdoch University WA, 6150 Australia
| | - Marta E Plonska-Brzezinska
- Department of Organic Chemistry, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Bialystok Mickiewicza 2A 15-222 Bialystok Poland
| | - Artur P Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń Gagarin Street 7 87-100 Toruń Poland
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18
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Harrison D, Boutard N, Brzozka K, Bugaj M, Chmielewski S, Cierpich A, Doedens JR, Fabritius CHRY, Gabel CA, Galezowski M, Kowalczyk P, Levenets O, Mroczkowska M, Palica K, Porter RA, Schultz D, Sowinska M, Topolnicki G, Urbanski P, Woyciechowski J, Watt AP. Discovery of a series of ester-substituted NLRP3 inflammasome inhibitors. Bioorg Med Chem Lett 2020; 30:127560. [PMID: 32956781 DOI: 10.1016/j.bmcl.2020.127560] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/25/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
The NLRP3 inflammasome is a component of the innate immune system involved in the production of proinflammatory cytokines. Aberrant activation by a wide range of exogenous and endogenous signals can lead to chronic, low-grade inflammation. It has attracted a great deal of interest as a drug target due to the association with diseases of large unmet medical need such as Alzheimer's disease, Parkinson's disease, arthritis, and cancer. To date, no drugs specifically targeting inhibition of the NLRP3 inflammasome have been approved. In this work, we used the known NLRP3 inflammasome inhibitor CP-456,773 (aka CRID3 or MCC 950) as our starting point and undertook a Structure-Activity Relationship (SAR) analysis and subsequent scaffold-hopping exercise. This resulted in the rational design of a series of novel ester-substituted urea compounds that are highly potent and selective NLRP3 inflammasome inhibitors, as exemplified by compounds 44 and 45. It is hypothesized that the ester moiety acts as a highly permeable delivery vehicle and is subsequently hydrolyzed to the carboxylic acid active species by carboxylesterase enzymes. These molecules are greatly differentiated from the state-of-the-art and offer potential in the treatment of NLRP3-driven diseases, particularly where tissue penetration is required.
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Affiliation(s)
- David Harrison
- NodThera Ltd., Suite 8, The Mansion, Chesterford Research Park, Little Chesterford, Saffron Walden, Essex CB10 1XL, United Kingdom.
| | - Nicolas Boutard
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Krzysztof Brzozka
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Marta Bugaj
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Stefan Chmielewski
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Anna Cierpich
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - John R Doedens
- NodThera Inc., 454 N 34(th) Street, Seattle, WA 98103, USA
| | | | | | - Michal Galezowski
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Piotr Kowalczyk
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Oleksandr Levenets
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Magdalena Mroczkowska
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Katarzyna Palica
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Roderick A Porter
- Rod Porter Consultancy, 89 Back Street, Ashwell, Baldock, Hertfordshire SG7 5PG, United Kingdom
| | - David Schultz
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Marta Sowinska
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Grzegorz Topolnicki
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Piotr Urbanski
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Jakub Woyciechowski
- Selvita S.A. (now Ryvu Therapeutics), Park Life Science, ul. Bobrzynskiego 14, 30-348, Kraków, Poland
| | - Alan P Watt
- NodThera Ltd., Suite 8, The Mansion, Chesterford Research Park, Little Chesterford, Saffron Walden, Essex CB10 1XL, United Kingdom
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19
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Świątkiewicz M, Hanczakowska E, Okoń K, Kowalczyk P, Grela ER. Effect of Maternal Diet and Medium Chain Fatty Acids Supplementation for Piglets on Their Digestive Tract Development, Structure, and Chyme Acidity as Well as Performance and Health Status. Animals (Basel) 2020; 10:ani10050834. [PMID: 32403448 PMCID: PMC7278414 DOI: 10.3390/ani10050834] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/28/2022] Open
Abstract
Simple Summary Weaning is the most critical period of piglet rearing. During this time, pigs have not yet fully developed their intestinal tract and immune system; therefore, they are an easy target for pathogenic microorganisms that cause gastrointestinal diseases. In the last decade, several nutritional factors were studied to prevent gastrointestinal disorders in piglets. The present study aimed to evaluate the effect of oils for sows during late pregnancy and lactation on offspring performance. In addition, the study determined the effect of caprylic acid or medium-chain triglyceride oil in piglets’ feed on their intestinal structure development, fatty acids content of chyme, productive performance, and health status. Summarizing, the study showed that coconut oil fed to pregnant and lactating sows can markedly reduce the mortality of piglets during the weaning period and that caprylic acid and medium-chain fatty acid oil can be a good feed supplement in weaned piglet feed. The nutritional factors tested in the present study could be used in the diet of sows and piglets to improve the health of piglets and thus the efficiency of pig production. Abstract The objective of the present study was to evaluate the effect of oils for sows during late pregnancy and lactation on offspring performance. In addition, the effect of caprylic acid (C8) or medium-chain triglyceride oil (MCT) in piglets’ feed on their gut development, performance, and health status was determined. The experiment was conducted on 24 sows allocated to two treatments: diet with rapeseed oil or with coconut oil. Newborn piglets were randomly allocated to three treatments: feed with no supplement or supplemented with 0.3% MCT or with 0.3% C8. The results showed that both oils had no effect on sow reproductive rates; however, fatty acid patterns of milk differed significantly and the number of lost piglets was lower in sow fed with coconut oil. Both caprylic and MCT oil significantly improved piglet performance and villus height. These additives did not change triacylglycerol content in blood, but C8 lowered total cholesterol and MCT increased IgG content. It can be concluded that coconut oil fed to pregnant and lactating sows can markedly reduce the mortality of piglets and that caprylic acid and medium-chain fatty acid oil can be a good supplement in weaned piglet feed.
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Affiliation(s)
- Małgorzata Świątkiewicz
- Department of Animal Nutrition and Feed Science, National Research Institute of Animal Production, Krakowska 1, 32-083 Balice, Poland;
- Correspondence:
| | - Ewa Hanczakowska
- Department of Animal Nutrition and Feed Science, National Research Institute of Animal Production, Krakowska 1, 32-083 Balice, Poland;
| | - Krzysztof Okoń
- Department of Pathomorphology, Medical College, Jagiellonian University, Grzegórzecka 16, 31-531 Krakow, Poland;
| | - Piotr Kowalczyk
- Department of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, Akademicka13, 20-950 Lublin, Poland;
- Auxilium Veterinary Clinic, Królewska 64, 20-950 Milanówek, Poland
| | - Eugeniusz R. Grela
- Institute of Animal Nutrition and Bromatology, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland;
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20
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Jastrzebski W, Grochola A, Szczepkowski J, Kowalczyk P. Polarisation labelling spectroscopy of rubidium dimer: Highly excited 81∑u+, 91∑u+ and 81∏u states. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Major R, Kowalczyk P, Surmiak M, Łojszczyk I, Podgórski R, Trzaskowska P, Ciach T, Russmueller G, Kasperkiewicz K, Major Ł, Jabłoński R, Kropiwnicki J, Lackner JM. Patient specific implants for jawbone reconstruction after tumor resection. Colloids Surf B Biointerfaces 2020; 193:111056. [PMID: 32403035 DOI: 10.1016/j.colsurfb.2020.111056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 03/24/2020] [Accepted: 04/12/2020] [Indexed: 12/01/2022]
Abstract
In case of benign and malignant tumours affecting the maxillofacial region, the resection of jawbone reflects the standard therapy in more than 5.000 cases per year within the European Union. The resulting large bone defects lead to scarred, mangled facial appearance, loss of mastication and probably speech, requiring aesthetic and functional surgery as a basis for physical and physiological rehabilitation. Although autologous vascularized bone autografts reflect the current golden standard, the portion of bone available for the procedure is limited and subsequent high-dose anti-cancer chemo-/radiotherapy can lead to local tissue necrosis. Autologous vascularized bone from fibular or iliac-crest autografts is current golden standard in jawbone resection post-treatment, however, the portion of transplantable bone is limited and subsequent high-dose anti-cancer chemo-/radiotherapy often results in tissue necrosis Our research focuses on alternative treatment techniques: tissue reconstruction via novel patient-specifically manufactured maxillofacial implant that stimulates bone tissue growth. The planned neoformation of vascularized bone in such implants within the patient's own body as "bioreactor" is the safest approach in tissue engineering. The works described herein included the design of the metallic substrate of the implant with the use of computed tomography basing on real patients scans and then 3D-printing the substrates from the Ti6Al7Nb powder. The metal core was then evaluated in terms of structural characteristic, cytotoxicity and gene expression through the in vitro tests. Further experiments were focused on fabrication of the biocompatible coating for outer surface of the bone implant that would enhance the healing process and accelerate the tissue growth. Functional polymeric granulate dedicated for osteoconductive, osteoinductive and osteogenesis properties were elaborated. Another approach including the coating for the implant surface with two-phase biocompatible layer including polymeric microspheres and hydrogel carrier, which would provide long-time release of bone and cartilage growth factors around the implant were also done. The polymeric granulate containing βTCP improved bone cells growth, but it some modification has to be done in order to improve structural pores to ensure for better osteoconductivity. The biocompatible coating including PVP hydrogel and polymeric microspheres is still in the development process.
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Affiliation(s)
- Roman Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, 30-059 Cracow, Poland.
| | - Piotr Kowalczyk
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland
| | - Marcin Surmiak
- Department of Medicine, Jagiellonian University Medical College, 8 Skawinska Street, 31-066 Cracow, Poland
| | - Ilona Łojszczyk
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland
| | - Rafał Podgórski
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland
| | - Paulina Trzaskowska
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland; Centre of Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
| | - Tomasz Ciach
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland; Centre of Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
| | - Guenter Russmueller
- Department of Oral and Maxillofacial Surgery, Medical University of Vienna, Waehringer Guertel 18-20 1090 Wien, Austria
| | - Katarzyna Kasperkiewicz
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Jagiellońska 28- 40-032 Katowice, Poland
| | - Łukasz Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, 30-059 Cracow, Poland
| | | | | | - Juergen M Lackner
- Joanneum Research Forschungsges.m.b.H., Institute of Surface Technologies and Photonics, Functional Surfaces, Leobner Strasse 94, 8712 Niklasdorf, Austria
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22
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Colabella L, Cisilino A, Fachinotti V, Capiel C, Kowalczyk P. Multiscale design of artificial bones with biomimetic elastic microstructures. J Mech Behav Biomed Mater 2020; 108:103748. [PMID: 32310104 DOI: 10.1016/j.jmbbm.2020.103748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/26/2020] [Accepted: 03/23/2020] [Indexed: 10/24/2022]
Abstract
Cancellous bone is a highly porous, heterogeneous, and anisotropic material which can be found at the epiphyses of long bones and in the vertebral bodies. The hierarchical architecture makes cancellous bone a prime example of a lightweight natural material that combines strength with toughness. Better understanding the mechanics of cancellous bone is of interest for the diagnosis of bone diseases, the evaluation of the risk of fracture, and for the design of artificial bones and bone scaffolds for tissue engineering. A multiscale optimization method to maximize the stiffness of artificial bones using biomimetic cellular microstructures described by a finite set of geometrical micro-parameters is presented here. The most outstanding characteristics of its implementation are the use of: an interior point optimization algorithm, a precalculated response surface methodology for the evaluation of the elastic tensor of the microstructure as an analytical function of the micro-parameters, and the adjoint method for the computation of the sensitivity of the macroscopic mechanical response to the variation of the micro-parameters. The performance and effectiveness of the tool are evaluated by solving a problem that consists in finding the optimal distribution of the microstructures for a proximal end of a femur subjected to physiological loads. Two strategies for the specification of the solid volume fraction constraints are assessed. The results are compared with data of a computed tomography study of an actual human bone. The model successfully predicts the main features of the spatial arrangement of the trabecular and cortical microstructures of the natural bone.
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Affiliation(s)
- Lucas Colabella
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Juan B. Justo, 4302, Mar del Plata, Argentina.
| | - Adriáan Cisilino
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Juan B. Justo, 4302, Mar del Plata, Argentina
| | - Victor Fachinotti
- Centro de Investigación de Métodos Computacionales (CIMEC), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Predio CCT-CONICET Santa Fe, Ruta 168, Paraje El Pozo, 3000, Santa Fe, Argentina
| | - Carlos Capiel
- Departmento de Radiología, Instituto Radiológico, Catamarca, 1542, Mar del Plata, Argentina
| | - Piotr Kowalczyk
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5B, 02-106, Warsaw, Poland
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23
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Bryk P, Korczeniewski E, Szymański GS, Kowalczyk P, Terpiłowski K, Terzyk AP. What Is the Value of Water Contact Angle on Silicon? Materials (Basel) 2020; 13:ma13071554. [PMID: 32230922 PMCID: PMC7177545 DOI: 10.3390/ma13071554] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 01/18/2023]
Abstract
Silicon is a widely applied material and the wetting of silicon surface is an important phenomenon. However, contradictions in the literature appear considering the value of the water contact angle (WCA). The purpose of this study is to present a holistic experimental and theoretical approach to the WCA determination. To do this, we checked the chemical composition of the silicon (1,0,0) surface by using the X-ray photoelectron spectroscopy (XPS) method, and next this surface was purified using different cleaning methods. As it was proved that airborne hydrocarbons change a solid wetting properties the WCA values were measured in hydrocarbons atmosphere. Next, molecular dynamics (MD) simulations were performed to determine the mechanism of wetting in this atmosphere and to propose the force field parameters for silica wetting simulation. It is concluded that the best method of surface cleaning is the solvent-reinforced de Gennes method, and the WCA value of silicon covered by SiO2 layer is equal to 20.7° (at room temperature). MD simulation results show that the mechanism of pure silicon wetting is similar to that reported for graphene, and the mechanism of silicon covered by SiO2 layer wetting is similar to this observed recently for a MOF.
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Affiliation(s)
- Paweł Bryk
- Department of Chemistry, Chair of Theoretical Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland;
| | - Emil Korczeniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (G.S.S.)
| | - Grzegorz S. Szymański
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (G.S.S.)
| | - Piotr Kowalczyk
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch WA 6150, Australia;
| | - Konrad Terpiłowski
- Department of Chemistry, Chair of Physical Chemistry of Interfacial Phenomena, Maria Curie-Skłodowska University, 20-031 Lublin, Poland;
| | - Artur P. Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (G.S.S.)
- Correspondence: ; Tel.: +48-56-61-14-371
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24
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Korczeniewski E, Zięba M, Zięba W, Kolanowska A, Bolibok P, Kowalczyk P, Wiertel-Pochopień A, Zawała J, Boncel S, Terzyk AP. Electrophoretic Deposition of Layer-by-Layer Unsheathed Carbon Nanotubes-A Step Towards Steerable Surface Roughness and Wettability. Materials (Basel) 2020; 13:E595. [PMID: 32012828 PMCID: PMC7040799 DOI: 10.3390/ma13030595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/09/2020] [Accepted: 01/23/2020] [Indexed: 02/04/2023]
Abstract
It is well known that carbon nanotube (CNT) oxidation (usually with concentrated HNO3) is a major step before the electrophoretic deposition (EPD). However, the recent discovery of the "onion effect" proves that multiwalled carbon nanotubes are not only oxidized, but a simultaneous unsheathing process occurs. We present the first report concerning the influence of unsheathing on the properties of the thus-formed CNT surface layer. In our study we examine how the process of gradual oxidation/unsheathing of a series of multiwalled carbon nanotubes (MWCNTs) influences the morphology of the surface formed via EPD. Taking a series of well-characterized and gradually oxidized/unsheathing Nanocyl MWCNTs and performing EPD on a carbon fiber surface, we analyzed the morphology and wettability of the CNT surfaces. Our results show that the water contact angle could be gradually changed in a wide range (125-163°) and the major property determining its value was the diameter of aggregates formed before the deposition process in the solvent. Based on the obtained results we determined the parameters having a crucial influence on the morphology of created layers. Our results shed new light on the deposition mechanism and enable the preparation of surfaces with steerable roughness and wettability.
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Affiliation(s)
- Emil Korczeniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (M.Z.); (W.Z.); (P.B.)
| | - Monika Zięba
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (M.Z.); (W.Z.); (P.B.)
| | - Wojciech Zięba
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (M.Z.); (W.Z.); (P.B.)
| | - Anna Kolanowska
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland; (A.K.); (S.B.)
| | - Paulina Bolibok
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (M.Z.); (W.Z.); (P.B.)
| | - Piotr Kowalczyk
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 6150, Australia;
| | - Agata Wiertel-Pochopień
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland; (A.W.-P.); (J.Z.)
| | - Jan Zawała
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, ul. Niezapominajek 8, 30-239 Kraków, Poland; (A.W.-P.); (J.Z.)
| | - Sławomir Boncel
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland; (A.K.); (S.B.)
| | - Artur P. Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland; (E.K.); (M.Z.); (W.Z.); (P.B.)
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25
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Furmaniak S, Gauden PA, Patrykiejew A, Szymański G, Miśkiewicz R, Kowalczyk P. In silico study on the effects of carbonyl groups on chemical equilibrium of reactions with a polar product occurring under confinement in pores of activated carbons. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1700115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sylwester Furmaniak
- Stanisław Staszic State University of Applied Sciences in Piła, Piła, Poland
| | - Piotr A. Gauden
- Carbon Materials Application in Electrochemistry and Environmental Protection Reserch Group, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Andrzej Patrykiejew
- Department for the Modelling of Physico-Chemical Processes, Faculty of Chemistry, Maria Curie Skłodowska University in Lublin, Lublin, Poland
| | - Grzegorz Szymański
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Radosław Miśkiewicz
- Faculty of Organization and Management, Silesian University of Technology, Gliwice, Poland
| | - Piotr Kowalczyk
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Australia
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26
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Kowalczyk P, Trzaskowska P, Łojszczyk I, Podgórski R, Ciach T. Production of 3D printed polylactide scaffolds with surface grafted hydrogel coatings. Colloids Surf B Biointerfaces 2019; 179:136-142. [DOI: 10.1016/j.colsurfb.2019.03.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/22/2019] [Accepted: 03/30/2019] [Indexed: 10/27/2022]
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27
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Furmaniak S, Gauden PA, Patrykiejew A, Miśkiewicz R, Kowalczyk P. The effects of confinement in pores built of folded graphene sheets on the equilibrium of nitrogen monoxide dimerisation reaction. J Phys Condens Matter 2019; 31:135001. [PMID: 30654355 DOI: 10.1088/1361-648x/aaffb3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the current work we have used reactive Monte Carlo simulations to systematically study the effects of graphene folding on equilibria of NO dimerisation occurring at isolated surfaces and in porous networks built of corrugated graphene sheets. It has been demonstrated that the folding of isolated graphene sheets significantly improves the yield of reactions occurring on their surface. Then, it has also been shown that in slit-like pores formed by the folded graphene sheets the reaction yield depends on the corrugation and arrangement of the pore walls. It has been found that the reaction yield increases when the walls' corrugation is high because of the appearance of narrow regions and/or wedge-like regions in the pores. The condensation of reacting fluid in such places, where the bulges at both walls are close one to another, leads to much higher reaction yield than on the surface of isolated sheets. Thus, we recommended the highly corrugated graphene to control the chemical reactions.
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Affiliation(s)
- Sylwester Furmaniak
- Stanisław Staszic University of Applied Sciences in Piła, Podchorążych Street 10, 64-920 Piła, Poland
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28
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Terzyk AP, Bryk P, Korczeniewski E, Kowalczyk P, Zawadzka A, Płóciennik P, Wiśniewski M, Wesołowski RP. Water Nanodroplet on a Hydrocarbon "Carpet"-The Mechanism of Water Contact Angle Stabilization by Airborne Contaminations on Graphene, Au, and PTFE Surfaces. Langmuir 2019; 35:420-427. [PMID: 30562472 DOI: 10.1021/acs.langmuir.8b03790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Wetting is very common phenomenon, and it is well documented that the wettability of a solid depends on the surface density of adsorbed airborne hydrocarbons. This "hydrocarbon hypothesis" has been experimentally confirmed for different surfaces, for example, graphene, TiO2, and SiO2; however, there are no scientific reports describing the influence of airborne contaminants on the water contact angle (WCA) value measured on the polytetrafluoroethylene (PTFE) surface. Using experimental data showing the influence of airborne hydrocarbons on the wettability of graphene, gold and PTFE by water, together with Molecular Dynamics simulation results we prove that the relation between the WCA and the surface concentration of hydrocarbons ( n-decane, n-tridecane, and n-tetracosane) is more complex than has been assumed up until now. We show, in contrast to commonly approved opinion, that adsorbed hydrocarbons can increase (graphene, Au) or decrease (PTFE) the WCA of a nanodroplet sitting on a surface. Using classical thermodynamics, a simple theoretical approach is developed. It is based on two adsorbed hydrocarbon states, namely, "carpet" and "dimple". In the "carpet" state a uniform layer of alkane molecules covers the entire substrate. In contrast, in the "dimple" state, the preadsorbed layer of alkane molecules covers only the open surface. Simple thermodynamic balance between the two states explains observed experimental and simulation results, forming a good starting point for future studies.
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Affiliation(s)
- Artur P Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Paweł Bryk
- Department for the Modeling of Physico - Chemical Processes , Maria Curie - Skłodowska University , 20-031 Lublin , Poland
| | - Emil Korczeniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Piotr Kowalczyk
- School of Engineering and Information Technology , Murdoch University , Murdoch 6150 , Western Australia , Australia
| | - Anna Zawadzka
- Department of Automation and Measurement Systems, Faculty of Physics, Astronomy, and Informatics , Nicolaus Copernicus University in Toruń , Grudziadzka Street 5 , 87-100 Toruń , Poland
| | - Przemysław Płóciennik
- Department of Automation and Measurement Systems, Faculty of Physics, Astronomy, and Informatics , Nicolaus Copernicus University in Toruń , Grudziadzka Street 5 , 87-100 Toruń , Poland
| | - Marek Wiśniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Radosław P Wesołowski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
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29
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Boutard N, Sabiniarz A, Czerwińska K, Jarosz M, Cierpich A, Kolasińska E, Wiklik K, Gluza K, Commandeur C, Buda A, Stasiowska A, Bobowska A, Galek M, Fabritius CH, Bugaj M, Palacz E, Mazan A, Zarębski A, Krawczyńska K, Żurawska M, Zawadzki P, Milik M, Węgrzyn P, Dobrzańska M, Brzózka K, Kowalczyk P. 5-Keto-3-cyano-2,4-diaminothiophenes as selective maternal embryonic leucine zipper kinase inhibitors. Bioorg Med Chem Lett 2018; 29:607-613. [PMID: 30626559 DOI: 10.1016/j.bmcl.2018.12.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/17/2018] [Accepted: 12/21/2018] [Indexed: 01/06/2023]
Abstract
Maternal embryonic leucine zipper kinase (MELK) is involved in several key cellular processes and displays increased levels of expression in numerous cancer classes (colon, breast, brain, ovary, prostate and lung). Although no selective MELK inhibitors have yet been approved, increasing evidence suggest that inhibition of MELK would constitute a promising approach for cancer therapy. A weak high-throughput screening hit (17, IC50 ≈ 5 μM) with lead-like properties was optimized for MELK inhibition. The early identification of a plausible binding mode by molecular modeling offered guidance in the choice of modifications towards compound 52 which displayed a 98 nM IC50. A good selectivity profile was achieved for a representative member of the series (29) in a 486 protein kinase panel. Future elaboration of 52 has the potential to deliver compounds for further development with chemotherapeutic aims.
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Affiliation(s)
| | | | | | | | - Anna Cierpich
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | | | | | | | | | - Anna Buda
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | | | | | - Mariusz Galek
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | | | - Marta Bugaj
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | - Edyta Palacz
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | - Andrzej Mazan
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
| | | | | | | | | | - Mariusz Milik
- Selvita S.A, Bobrzyńskiego, 14, 30-338 Kraków, Poland
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30
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Kowalczyk P, Wiśniewski M, Deditius A, Włoch J, Terzyk AP, Ela WP, Kaneko K, Webley PA, Neimark AV. Phenol Molecular Sheets Woven by Water Cavities in Hydrophobic Slit Nanospaces. Langmuir 2018; 34:15150-15159. [PMID: 30449103 DOI: 10.1021/acs.langmuir.8b02832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite extensive research over the last several decades, the microscopic characterization of topological phases of adsorbed phenol from aqueous solutions in carbon micropores (pore size < 2.0 nm), which are believed to exhibit a solid and quasi-solid character, has not been reported. Here, we present a combined experimental and molecular level study of phenol adsorption from neutral water solutions in graphitic carbon micropores. Theoretical and experimental results show high adsorption of phenol and negligible coadsorption of water in hydrophobic graphitic micropores (super-sieving effect). Graphic processing unit-accelerated molecular dynamics simulation of phenol adsorption from water solutions in a realistic model of carbon micropores reveal the formation of two-dimensional phenol crystals with a peculiar pattern of hydrophilic-hydrophobic stripes in 0.8 nm supermicropores. In wider micropores, disordered phenol assemblies with water clusters, linear chains, and cavities of various sizes are found. The highest surface density of phenol is computed in 1.8 nm supermicropores. The percolating water cluster spanning the entire pore space is found in 2.0 nm supermicropores. Our findings open the door for the design of better materials for purification of aqueous solutions from nonelectrolyte micropollution.
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Affiliation(s)
- Piotr Kowalczyk
- School of Engineering and Information Technology , Murdoch University , 90 South Street , Murdoch 6150 , Western Australia , Australia
| | - Marek Wiśniewski
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry , N. Copernicus University in Toruń , 7 Gagarin Street , 87-100 Toruń , Poland
| | - Artur Deditius
- School of Engineering and Information Technology , Murdoch University , 90 South Street , Murdoch 6150 , Western Australia , Australia
| | - Jerzy Włoch
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry , N. Copernicus University in Toruń , 7 Gagarin Street , 87-100 Toruń , Poland
| | - Artur P Terzyk
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry , N. Copernicus University in Toruń , 7 Gagarin Street , 87-100 Toruń , Poland
| | - Wendell P Ela
- School of Engineering and Information Technology , Murdoch University , 90 South Street , Murdoch 6150 , Western Australia , Australia
| | - Katsumi Kaneko
- Center for Energy and Environmental Science , Shinshu University , 4-17-1 , Wakasato, Nagano-City 380-8553 , Japan
| | - Paul A Webley
- School of Chemical and Biomedical Engineering , University of Melbourne , Parkville , Victoria 3010 , Australia
| | - Alexander V Neimark
- Department of Chemical and Biochemical Engineering , Rutgers, The State University of New Jersey , 98 Brett Road , Piscataway , New Jersey 08854-8058 , United States
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31
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Terzyk AP, Bieniek A, Bolibok P, Wiśniewski M, Ferrer P, da Silva I, Kowalczyk P. Stability of coordination polymers in water: state of the art and towards a methodology for nonporous materials. ADSORPTION 2018. [DOI: 10.1007/s10450-018-9991-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Boutard N, Białas A, Sabiniarz A, Guzik P, Banaszak K, Biela A, Bień M, Buda A, Bugaj B, Cieluch E, Cierpich A, Dudek Ł, Eggenweiler H, Fogt J, Gaik M, Gondela A, Jakubiec K, Jurzak M, Kitlińska A, Kowalczyk P, Kujawa M, Kwiecińska K, Leś M, Lindemann R, Maciuszek M, Mikulski M, Niedziejko P, Obara A, Pawlik H, Rzymski T, Sieprawska‐Lupa M, Sowińska M, Szeremeta‐Spisak J, Stachowicz A, Tomczyk MM, Wiklik K, Włoszczak Ł, Ziemiańska S, Zarębski A, Brzózka K, Nowak M, Fabritius C. Discovery and Structure–Activity Relationships of
N
‐Aryl 6‐Aminoquinoxalines as Potent PFKFB3 Kinase Inhibitors. ChemMedChem 2018; 14:169-181. [DOI: 10.1002/cmdc.201800569] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/13/2018] [Indexed: 01/09/2023]
Affiliation(s)
| | | | | | - Paweł Guzik
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | | | - Artur Biela
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | - Marcin Bień
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Almac Group 20 Seagoe Industrial Estate Craigavon BT63 5QD UK
| | - Anna Buda
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | | | | | - Anna Cierpich
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Grupa Azoty S.A. Kwiatkowskiego 8 33-100 Tarnów Poland
| | - Łukasz Dudek
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | | | - Joanna Fogt
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | - Monika Gaik
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Max Planck Research Group at the Małopolska Centre of Biotechnology Jagiellonian University Krakow Poland
| | | | | | - Mirek Jurzak
- Discovery Pharmacology, Merck Biopharma Merck KGaA Frankfurter Straße 250 64293 Darmstadt Germany
| | | | | | | | - Katarzyna Kwiecińska
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Captor Therapeutics Duńska 11 54-427 Wrocław Poland
| | - Marcin Leś
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | - Ralph Lindemann
- Translational Innovation Platform Oncology, Merck Biopharma Merck KGaA Frankfurter Straße 250 64293 Darmstadt Germany
| | - Monika Maciuszek
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: LifeArc Accelerator Building, Open Innovation Campus Stevenage SG1 2FX UK
| | | | | | - Alicja Obara
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
| | | | | | | | | | | | | | - Mateusz M. Tomczyk
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Katedra Chemii Organicznej Bioorganicznej I Biotechnologii Ul. B. Krzywoustego 4, P., 18/N1 44-100 Gliwice Poland
| | | | - Łukasz Włoszczak
- Selvita S.A. Bobrzyńskiego 14 30-348 Kraków Poland
- Current address: Grupa Adamed Pieńków 149 05-152 Czosnów Poland
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Dąbrowska-Szewczyk E, Zawadzka A, Kowalczyk P, Podgórski R, Wojasiński M, Ciach T, Graczyk R, Zawistowski T, Kukołowicz P. [P213] Influence of beam spoiler and air gap on dose distribution in build-up region for X6 MV static field. Phys Med 2018. [DOI: 10.1016/j.ejmp.2018.06.505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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34
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Bartosik A, Guzik P, Sowinska M, Gluza K, Krol M, Wrobel A, Dreas A, Iwanska F, Zastawna M, Kulesza U, Boutard N, Schultz D, Wujkowska J, Pyziak K, Sroka-Porada A, Przybylowicz A, Adamus A, Sieprawska-Lupa M, Golik P, Kowalczyk P, Brzozka K, Rzymski T, Nowak M. Abstract 3516: Discovery of novel SHMT small molecule inhibitors for cancer treatment. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-3516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Over-activation of the serine synthesis pathway, upregulation of SHMT2 has been described in over 20% of solid tumors (e.g. breast, lung, colorectal cancers). Such cancer cells are highly dependent on serine. Serine hydroxymethyltransferase (SHMT) plays a key role in a so-called one-carbon pathway, a group of biochemical reactions involved in amino acid metabolism. SHMT catalyzes the conversion of serine to glycine and also plays a role in the folate (vitamin B9) cycle. Antagonists of folate metabolism or antifolates are an established chemotherapy in certain cancers. Folate antagonism disrupts cell division, DNA/RNA synthesis and protein synthesis. Pemetrexed (for non-small cell lung carcinoma, mesothelioma) and methotreaxate (for autoimmune conditions like rheumatoid arthritis and certain cancers) are two well established and effective antifolates. The main drawback with antifolates in cancer treatment, however, is the development of resistance. In this study we report development of a series of small molecule SHMT1/2 inhibitors. Synthetized compounds exert potency in SHMT1/2 biochemical assay as well as in cellular assay (measured by the C13 serine to glycine conversion) with the low nanomolar range. Therapeutic effect of the compounds was investigated in the panel of cancer cell lines with different genetic background as well as with different SHMT2 levels. We identified several cell lines in which tested compounds inhibited cancer cell grow with nM GI50 values. Taken together, presented data supports our rationale for using SHMT1/2 inhibitors as a novel and interesting approach for the cancer therapy.
Citation Format: Anna Bartosik, Pawel Guzik, Marta Sowinska, Karolina Gluza, Marcin Krol, Anna Wrobel, Agnieszka Dreas, Faustyna Iwanska, Magdalena Zastawna, Urszula Kulesza, Nicolas Boutard, David Schultz, Justyna Wujkowska, Karolina Pyziak, Agnieszka Sroka-Porada, Agnieszka Przybylowicz, Agnieszka Adamus, Magdalena Sieprawska-Lupa, Przemyslaw Golik, Piotr Kowalczyk, Krzysztof Brzozka, Tomasz Rzymski, Mateusz Nowak. Discovery of novel SHMT small molecule inhibitors for cancer treatment [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3516.
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Kowalczyk P, Wojasiński M, Wasiak I, Ciach T. Investigation of controlled solvent exchange precipitation of fluorescent organic nanocrystals. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.02.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Włoch J, Terzyk AP, Wiśniewski M, Kowalczyk P. Nanoscale Water Contact Angle on Polytetrafluoroethylene Surfaces Characterized by Molecular Dynamics-Atomic Force Microscopy Imaging. Langmuir 2018; 34:4526-4534. [PMID: 29528239 DOI: 10.1021/acs.langmuir.8b00257] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The aim of this study is to link polytetrafluoroethylene (PTFE) surface characteristics with its wetting properties in the nanoscale. To do this using molecular dynamics (MD) simulation, three series of rough PTFE surfaces were generated by annealing and compressing and next characterized by the application of the MD version of the atomic force microscopy (AFM) method. The values of specific surface areas were additionally calculated. The TIP4P/2005 water model was used to study the wetting properties of obtained PTFE samples. The simulated water contact angle (WCA) value for the most flat (but slightly rough) sample having PTFE density is equal to 106.94°, and it is close to the value suggested for a perfect PTFE surface on the basis of experimental results. Also, the changes in the WCA with PTFE compression are in the same range as experimentally reported. The obtained MD simulation results make it possible to link, for the first time, the WCA values with the surface MD-AFM root-mean-square roughness and with the PTFE density. Finally, we show that for PTFE wetting in the nanoscale, the line tension is negligible and the Bormashenko's equation reduces to the Cassie-Baxter (CB) model. In fact, our simulation results are close to the CB mechanism.
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Affiliation(s)
| | | | | | - Piotr Kowalczyk
- School of Engineering and Information Technology , Murdoch University , Murdoch 6150 WA , Australia
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Dabrowska E, Zawadzka A, Kukolowicz P, Kowalczyk P, Podgorski R, Wojasiński M, Ciach T, Graczyk R, Zawistowski T. EP-1846: Influence of beam spoiler and air gap on dose distribution in build-up region for X6 MV open field. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32155-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Colabella L, Ibarra Pino AA, Ballarre J, Kowalczyk P, Cisilino AP. Calculation of cancellous bone elastic properties with the polarization-based FFT iterative scheme. Int J Numer Method Biomed Eng 2017; 33:e2879. [PMID: 28268244 DOI: 10.1002/cnm.2879] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 01/17/2017] [Accepted: 03/03/2017] [Indexed: 06/06/2023]
Abstract
The Fast Fourier Transform-based method, originally introduced by Moulinec and Suquet in 1994 has gained popularity for computing homogenized properties of composites. In this work, the method is used for the computational homogenization of the elastic properties of cancellous bone. To the authors' knowledge, this is the first study where the Fast Fourier Transform scheme is applied to bone mechanics. The performance of the method is analyzed for artificial and natural bone samples of 2 species: bovine femoral heads and implanted femurs of Hokkaido rats. Model geometries are constructed using data from X-ray tomographies, and the bone tissue elastic properties are measured using microindentation and nanoindentation tests. Computed results are in excellent agreement with those available in the literature. The study shows the suitability of the method to accurately estimate the fully anisotropic elastic response of cancellous bone. Guidelines are provided for the construction of the models and the setting of the algorithm.
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Affiliation(s)
- Lucas Colabella
- INTEMA-School of Engineering, CONICET-National University of Mar del Plata, Av. Juan B. Justo 4302, Mar del Plata, B7608FDQ, Argentina
| | - Ariel Alejandro Ibarra Pino
- INTEMA-School of Engineering, CONICET-National University of Mar del Plata, Av. Juan B. Justo 4302, Mar del Plata, B7608FDQ, Argentina
- Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Josefina Ballarre
- INTEMA-School of Engineering, CONICET-National University of Mar del Plata, Av. Juan B. Justo 4302, Mar del Plata, B7608FDQ, Argentina
| | - Piotr Kowalczyk
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5B, 02-106, Warsaw, Poland
| | - Adrián Pablo Cisilino
- INTEMA-School of Engineering, CONICET-National University of Mar del Plata, Av. Juan B. Justo 4302, Mar del Plata, B7608FDQ, Argentina
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Pina-Salazar EZ, Urita K, Hayashi T, Futamura R, Vallejos-Burgos F, Włoch J, Kowalczyk P, Wiśniewski M, Sakai T, Moriguchi I, Terzyk AP, Osawa E, Kaneko K. Water Adsorption Property of Hierarchically Nanoporous Detonation Nanodiamonds. Langmuir 2017; 33:11180-11188. [PMID: 28793776 DOI: 10.1021/acs.langmuir.7b02046] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The detonation nanodiamonds form the aggregate having interparticle voids, giving a marked hygroscopic property. As the relationship between pore structure and water adsorption of aggregated nanodiamonds is not well understood yet, adsorption isotherms of N2 at 77 K and of water vapor at 298 K of the well-characterized aggregated nanodiamonds were measured. HR-TEM and X-ray diffraction showed that the nanodiamonds were highly crystalline and their average crystallite size was 4.5 nm. The presence of the graphitic layers on the nanodiamond particle surface was confirmed by the EELS examination. The pore size distribution analysis showed that nanodiamonds had a few ultramicropores with predominant mesopores of 4.5 nm in average size. The water vapor adsorption isotherm of IUPAC Type V indicates the hydrophobicity of the nanodiamond aggregates, with the presence of hydrophilic sites. Then the hygroscopic nature of nanodiamonds should be associated with the surface functionalities of the graphitic shell and the ultramicropores on the mesopore walls.
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Affiliation(s)
| | - Koki Urita
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University , Nagasaki 852-8521, Japan
| | | | | | | | - Jerzy Włoch
- Faculty of Chemistry, Synthesis and Modification of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń , Gagarin Street 7, 87-100 Toruń, Poland
| | - Piotr Kowalczyk
- School of Engineering and Information Technology, Murdoch University , Murdoch 6150, WA, Australia
| | - Marek Wiśniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń , Gagarin Street 7, 87-100 Toruń, Poland
- INVEST-TECH R&D Center, Plaska Street 32-34, 87-100 Toruń, Poland
| | | | - Isamu Moriguchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University , Nagasaki 852-8521, Japan
| | - Artur P Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń , Gagarin Street 7, 87-100 Toruń, Poland
| | - Eiji Osawa
- Nano-Carbon Research Institute, Ltd., Ueda, Nagano 386-8567, Japan
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Włoch J, Terzyk AP, Wiśniewski M, Kowalczyk P. Nanoscale Insight into the Mechanism of a Highly Oriented Pyrolytic Graphite Edge Surface Wetting by "Interferencing" Water. Langmuir 2017; 33:8562-8573. [PMID: 28771011 DOI: 10.1021/acs.langmuir.7b02113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The new molecular dynamics simulation results showing the influence of the edge carbon surface atoms on the wettability of a highly oriented pyrolytic graphite (HOPG) surface with water nanodroplets are reported. The conditions for the occurrence of the Wenzel effect are discussed, and the Cassie-to-Wenzel transition (CTWT) mechanism in the nanoscale is explored. This transition is detected by the application of a new procedure showing that the CTWT point shifts toward larger values of carbon-oxygen potential well depth with the decrease in the HOPG side angle. It is concluded that the Wenzel effect significantly contributes to the contact angles (CAs) measured for the HOPG surfaces. The Wenzel effect is also very important for the "HOPG" structures possessing the disturbed C-C interlayer distance, and its influence on the water nanodroplet CAs is strongly pronounced. The structure of water confined inside slits and on a HOPG surface is studied using the analysis of the density profiles, the number of hydrogen bonds, and, modified for the purpose of this study, structure factor. The detailed analysis of all parameters describing confined water leads to the conclusion about the presence of characteristic interference patterns revealed as a result of long-term simulation. A simple model describing this effect is proposed as the starting point for further considerations.
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Affiliation(s)
| | | | | | - Piotr Kowalczyk
- School of Engineering and Information Technology, Murdoch University , Murdoch, 6150 Western Australia, Australia
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Cimino RT, Kowalczyk P, Ravikovitch PI, Neimark AV. Determination of Isosteric Heat of Adsorption by Quenched Solid Density Functional Theory. Langmuir 2017; 33:1769-1779. [PMID: 28135415 DOI: 10.1021/acs.langmuir.6b04119] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The heat of adsorption is one of the most important parameters characterizing energetic heterogeneity of the adsorbent surface. Heats of adsorption are either determined directly by calorimetry or calculated from adsorption isotherms measured at different temperatures using the thermodynamic Clausius-Clapeyron equation. Here, we present a method for calculating the isosteric heat of adsorption that requires as input only a single adsorption isotherm measured at one temperature. The proposed method is implemented with either nonlocal (NLDFT) or quenched solid (QSDFT) density functional theory models of adsorption that are currently widely used for calculating pore size distributions in various micro- and mesoporous solids. The pore size distribution determined from the same experimental isotherm is used for predicting the isosteric heat. The QSDFT method has advantages of taking into account two factors contributing to the structural heterogeneity of adsorbents: the molecular level roughness of the surface and the pore size distribution. The method is illustrated with examples of low temperature nitrogen and argon adsorption on selected samples of carbons of different degree of graphitization and MCM-41 mesoporous silicas of different pore size. The isosteric heat predictions from the NLDFT and QSDFT methods are compared against relevant experiments and the results of Monte Carlo (MC) simulations, with good agreement found in the cases where the surface model adequately reflects the pore surface roughness. Analyses with the QSDFT method show that the isosteric heat of adsorption significantly depends of the molecular level roughness of the adsorbent surface, which is ignored in NLDFT and MC models. The proposed QSDFT method with further verification can be used for calculating the isosteric heat as an additional parameter characterizing the adsorbent surface in parallel with routine calculations of the pore size distribution from a single adsorption isotherm.
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Affiliation(s)
- Richard T Cimino
- Department of Chemical and Biochemical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
| | - Piotr Kowalczyk
- School of Engineering and Information Technology, Murdoch University , Perth WA 6150, Australia
| | - Peter I Ravikovitch
- ExxonMobil Research and Engineering Company, Annandale, New Jersey 08801, United States
| | - Alexander V Neimark
- Department of Chemical and Biochemical Engineering, Rutgers University , Piscataway, New Jersey 08854, United States
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Abstract
Systematic Monte Carlo studies concerning relationships between the porous structure of activated carbons and the equilibria of reactions under confinement are presented.
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Affiliation(s)
| | - Piotr A. Gauden
- Physicochemistry of Carbon Materials Research Group
- Faculty of Chemistry
- Nicolaus Copernicus University in Toruń
- 87-100 Toruń
- Poland
| | - Piotr Kowalczyk
- School of Engineering and Information Technology
- Murdoch University
- Australia
| | - Andrzej Patrykiejew
- Department for the Modelling of Physico-Chemical Processes
- Faculty of Chemistry
- Maria Curie Skłodowska University in Lublin
- 20-031 Lublin
- Poland
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Abstract
The major subject of our study is the accuracy of contact angle calculations. Reporting new simulation data for graphene-water systems, we show that the majority of previously reported data should be treated with caution, since the proper contact angle can be recorded only after a sufficiently long simulation time. It has been proven that-if one wants to gain accuracy greater than 0.1°-long calculations (exceeding 50 ns) are required. Finally, we also show, using both a Groningen Machine for Chemical Simulations (GROMACS) package and our new molecular dynamics (MD) code, that the changes in the contact angle, caused by graphene bottom layer rotation, are within the range of calculation error. We also propose a novel definition of the bottom of the droplet as the height where the density is half the density of liquid water. This new definition is applied in the method of the contact angle calculation from the MD simulation data.
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Affiliation(s)
- Jerzy Włoch
- Faculty of Chemistry, Synthesis and Modification of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100 Toruń, Poland
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Kowalczyk P, Jaroniec M, Solarz L, Terzyk AP, Gauden PA. Grand Canonical Monte Carlo Simulation Study of Hydrogen Storage in Ordered Mesoporous Carbons at 303 K. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361706779849771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Piotr Kowalczyk
- Department III, Institute of Physical Chemistry, Polish Academy of Science, Kasprzaka Street 44/52, 01-224 Warsaw, Poland
| | - Mietek Jaroniec
- Department of Chemistry, Kent State University, Kent, OH 44242, U.S.A
| | - Lech Solarz
- Department of Technical Physics, Military Technical Academy, Kaliski Street 2, 00-908 Warsaw, Poland
| | - Artur P. Terzyk
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarina Str., 87-100 Toruń, Poland
| | - Piotr A. Gauden
- Physicochemistry of Carbon Materials Research Group, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarina Str., 87-100 Toruń, Poland
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Kowalczyk P, Terzyk AP, Gauden PA, Rychlicki G. Numerical Analysis of the Horvath–Kawazoe Equation — The Adsorption of Nitrogen, Argon, Benzene, Carbon Tetrachloride and Sulphur Hexafluoride. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361702760254478] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A previously proposed numerical procedure based on the Horvath–Kawazoe (HK) model for estimating the MPSD (micropore size distribution) from a single nitrogen adsorption isotherm was developed. The results of the calculation of MSPD for two synthetic carbons obtained from numerical studies using the modified procedure are presented and discussed. These allowed the evaluation of the distribution from a single adsorption isotherm of nitrogen, argon, benzene, carbon tetrachloride and sulphur hexafluoride. In addition, the nitrogen and argon adsorption potential distributions were calculated for the same carbons applying the HK and condensation approximation (CA) methods. Agreement between these two independent approaches was observed. Differences between the MSPD obtained from HK and from the Dubinin micropore filling model (using the CONTIN package) were observed and discussed. It was shown that the structural parameter of the Dubinin–Astakov equation had no significant influence on the MSPD curves obtained.
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Affiliation(s)
- Piotr Kowalczyk
- Department of Respiratory Protection, Military Institute of Chemistry and Radiometry, Gen. Chruściel Avenue 105, 00-910 Warsaw, Poland
| | - Artur P. Terzyk
- Physicochemistry of Carbon Materials Research Group, Department of Chemistry, Nicolaus Copernicus University, Gagarin St. 7, 87-100 Toruń, Poland
| | - Piotr A. Gauden
- Physicochemistry of Carbon Materials Research Group, Department of Chemistry, Nicolaus Copernicus University, Gagarin St. 7, 87-100 Toruń, Poland
| | - Gerhard Rychlicki
- Physicochemistry of Carbon Materials Research Group, Department of Chemistry, Nicolaus Copernicus University, Gagarin St. 7, 87-100 Toruń, Poland
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Kowalczyk P, Chmielewski S, Poczkaj A, Salwińska M, Gołas A, Gluza K, Gałęzowski M, Levenets O, Woyciechowski J, Bugaj M, Fabritius C, Brzózka K. Development of small molecule inhibitors of IL-1β processing. N Biotechnol 2016. [DOI: 10.1016/j.nbt.2016.06.982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kowalczyk P, Jaworek J, Kot M, Sokolowska B, Bielen A, Janowska B, Ciesla JM, Szparecki G, Sados B, Tudek B. Inflammation increases oxidative DNA damage repair and stimulates preneoplastic changes in colons of newborn rats. J Physiol Pharmacol 2016; 67:277-286. [PMID: 27226187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Oxidative DNA damage may be a risk factor for development of various pathologies, including malignancy. We studied inflammation triggered modulation of repair activity in the intestines of three weeks old rats injected i.p. with E.coli or S. typhimurium lipopolysaccharides (LPS) at doses of 1, 5 or 10 mg/kg. Subsequent formation in these animals of colonic preneoplastic lesions, aberrant crypt foci (ACF) was also investigated. Five days after LPS administration no differences were observed in repair rate of 1,N(6)-ethenoadenine (εA), 3,N(4)-ethenocytosine (εC) and 8-oxoguanine (8-oxoG) in intestines of these rats, as measured by the nicking assay. However a significant increase in all three repair activities was found within one and two months after S. typhimurium LPS treatment. E. coli LPS significantly increased only the 8-oxoG repair. S. typhimurium LPS stimulated mRNA transcription of pro-inflammatory proteins, lipooxygenase-12 and cyclooxygenase-2, as well as some DNA repair enzymes like AP-endonuclease (Ape1) and εC-glycosylase (Tdg). mRNA level of DNA glycosylases excising εA (MPG) and 8-oxoG (OGG1) was also increased by LPS treatment, but only at the highest dose. Transcription of all enzymes increased for up to 30 days after LPS, and subsequently decreased to the level observed before treatment, with the exception of APE1, which remained elevated even two months after LPS administration. Thus, the repair efficiency of εA, εC and 8-oxoG depends on the availability of APE1, which increases OGG1 and TDG turnover on damaged DNA, and presumably stimulates MPG. One and two months after administration of E. coli or S. typhimurium LPS, the number of aberrant crypt foci in rat colons increased in a dose and time dependent manner. Thus, inflammation stimulates the repair capacity for εA, εC and 8-oxoG, but simultaneously triggers the appearance of preneoplastic changes in the colons. This may be due to increased oxidative stress and imbalance in DNA repair.
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Affiliation(s)
- P Kowalczyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - J Jaworek
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Cracow, Poland
| | - M Kot
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Collegium Medicum, Cracow, Poland
| | - B Sokolowska
- Department of Respiratory Research, Medical Research Center, Polish Academy of Sciences, Warsaw, Poland
| | - A Bielen
- present address: Cancer Research UK, Clare Hall Laboratories, Blanche Lane, South Mimms, United Kingdom
| | - B Janowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - J M Ciesla
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - G Szparecki
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - B Sados
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - B Tudek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
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Terzyk AP, Furmaniak S, Wiśniewski M, Werengowska K, Gauden PA, Kowalczyk P. New findings on the influence of carbon surface curvature on energetics of benzene adsorption from gaseous phase. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.12.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Furmaniak S, Terzyk AP, Gauden PA, Włoch J, Kowalczyk P, Werengowska-Ciećwierz K, Wiśniewski M, Harris PJF. To what extent can mutual shifting of folded carbonaceous walls in slit-like pores affect their adsorption properties? J Phys Condens Matter 2016; 28:015002. [PMID: 26569632 DOI: 10.1088/0953-8984/28/1/015002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have performed systematic Monte Carlo studies on the influence of shifting the walls in slit-like systems constructed from folded graphene sheets on their adsorption properties. Specifically, we have analysed the effect on the mechanism of argon adsorption (T = 87 K) and on adsorption and separation of three binary gas mixtures: CO2/N2, CO2/CH4 and CH4/N2 (T = 298 K). The effects of the changes in interlayer distance were also determined. We show that folding of the walls significantly improves the adsorption and separation properties in comparison to ideal slit-like systems. Moreover, we demonstrate that mutual shift of sheets (for small interlayer distances) causes the appearance of small pores between opposite bulges. This causes an increase in vapour adsorption at low pressures. Due to overlapping of interactions with opposite walls causing an increase in adsorption energy, the mutual shift of sheets is also connected with the rise in efficiency of mixture separation. The effects connected with sheet orientation vanish as the interlayer distance increases.
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Affiliation(s)
- Sylwester Furmaniak
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Toruń, Gagarin St. 7, 87-100 Toruń, Poland
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