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Hanif MB, Bacova J, Berezenko V, Zeng Y, Paluch E, Seniuk A, Khan MZ, Rauf S, Hussain I, Motlochova M, Plesch G, Monfort O, Capek J, Dworniczek E, Rousar T, Motola M. 2D TiO2 nanosheets decorated via sphere-like BiVO4: a promising non-toxic material for liquid phase photocatalysis and bacterial eradication. ChemSusChem 2024:e202400027. [PMID: 38588020 DOI: 10.1002/cssc.202400027] [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: 01/08/2024] [Revised: 03/25/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
An in-depth investigation was conducted on a promising composite material (BiVO4/TiO2), focusing on its potential toxicity, photoinduced catalytic properties, as well as its antibiofilm and antimicrobial functionalities. The preparation process involved the synthesis of 2D-TiO2 using the lyophilization method, which was subsequently functionalized with sphere-like BiVO4. Finally, we developed BiVO4/TiO2 S-scheme heterojunctions which can greatly promote the separation of electron-hole pairs to achieve high photocatalytic performance. The evaluation of concentration- and time-dependent viability inhibition was performed on human lung carcinoma epithelial A549 cells. This assessment included the estimation of glutathione levels and mitochondrial dehydrogenase activity. Significantly, the BiVO4/TiO2 composite demonstrated minimal toxicity towards A549 cells. Impressively, the BiVO4/TiO2 composite exhibited notable photocatalytic performance in the degradation of rhodamine B (k =0.135 min-1) and phenol (k = 0.016 min-1). In terms of photoinduced antimicrobial performance, the composite effectively inactivated both gram-negative E. coli and gram-positive E. faecalis bacteria upon 60-min of UV-A light exposure, resulting in a significant log6(log10CFU/mL) reduction in bacterial count. These promising results can be attributed to the unique 2D morphology of TiO2 modified by sphere-like BiVO4, leading to an increased generation of (intracellular)hydroxyl radicals, which plays a crucial role in treatments of both organic pollutants and bacteria.
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Affiliation(s)
- Muhammad Bilal Hanif
- Comenius University in Bratislava: Univerzita Komenskeho v Bratislave, Department of Inorganic Chemistry, Ilkovicova 6, 84215, Bratislava, SLOVAKIA
| | - Jana Bacova
- University of Pardubice, 2. Department of Biological and Biochemical Sciences, CZECH REPUBLIC
| | | | - Yilan Zeng
- Comenius University in Bratislava, inorganic Chemistry, SLOVAKIA
| | - Emil Paluch
- Wrocław Medical University, Department of Microbiology, POLAND
| | - Alicja Seniuk
- Wrocław Medical University, Department of Microbiology, POLAND
| | | | - Sajid Rauf
- Shenzhen University, College of Electronics and Information Engineering, CHINA
| | - Iftikhar Hussain
- Shenzhen University, College of Electronics and Information Engineering, CHINA
| | - Monika Motlochova
- Czech Academy of Sciences, Institute of Inorganic Chemistry, CZECH REPUBLIC
| | - Gustav Plesch
- Comenius University in Bratislava, inorganic Chemistry, SLOVAKIA
| | - Olivier Monfort
- Comenius University in Bratislava, inorganic Chemistry, SLOVAKIA
| | - Jan Capek
- University of Pardubice, Department of Biological and Biochemical Sciences, CZECH REPUBLIC
| | - Ewa Dworniczek
- Wrocław Medical University, Department of Microbiology, POLAND
| | - Tomas Rousar
- University of Pardubice, Department of Biological and Biochemical Sciences, CZECH REPUBLIC
| | - Martin Motola
- Comenius University, Department of Inorganic Chemistry, Ilkovicova 6, Bratislava, SLOVAKIA
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2
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Capek J, Sepúlveda M, Bacova J, Rodriguez-Pereira J, Zazpe R, Cicmancova V, Nyvltova P, Handl J, Knotek P, Baishya K, Sopha H, Smid L, Rousar T, Macak JM. Ultrathin TiO 2 Coatings via Atomic Layer Deposition Strongly Improve Cellular Interactions on Planar and Nanotubular Biomedical Ti Substrates. ACS Appl Mater Interfaces 2024; 16:5627-5636. [PMID: 38275195 PMCID: PMC10859894 DOI: 10.1021/acsami.3c17074] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024]
Abstract
This work aims to investigate the chemical and/or structural modification of Ti and Ti-6Al-4V (TiAlV) alloy surfaces to possess even more favorable properties toward cell growth. These modifications were achieved by (i) growing TiO2 nanotube layers on these substrates by anodization, (ii) surface coating by ultrathin TiO2 atomic layer deposition (ALD), or (iii) by the combination of both. In particular, an ultrathin TiO2 coating, achieved by 1 cycle of TiO2 ALD, was intended to shade the impurities of F- and V-based species in tested materials while preserving the original structure and morphology. The cell growth on TiO2-coated and uncoated TiO2 nanotube layers, Ti foils, and TiAlV alloy foils were compared after incubation for up to 72 h. For evaluation of the biocompatibility of tested materials, cell lines of different tissue origin, including predominantly MG-63 osteoblastic cells, were used. For all tested nanomaterials, adding an ultrathin TiO2 coating improved the growth of MG-63 cells and other cell lines compared with the non-TiO2-coated counterparts. Here, the presented approach of ultrathin TiO2 coating could be used potentially for improving implants, especially in terms of shading problematic F- and V-based species in TiO2 nanotube layers.
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Affiliation(s)
- Jan Capek
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Marcela Sepúlveda
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
| | - Jana Bacova
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Jhonatan Rodriguez-Pereira
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central
European Institute of Technology, Brno University
of Technology, Purkyňova
123, 61200 Brno, Czech Republic
| | - Raul Zazpe
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central
European Institute of Technology, Brno University
of Technology, Purkyňova
123, 61200 Brno, Czech Republic
| | - Veronika Cicmancova
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Jiri Handl
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Petr Knotek
- Department
of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Kaushik Baishya
- Central
European Institute of Technology, Brno University
of Technology, Purkyňova
123, 61200 Brno, Czech Republic
| | - Hanna Sopha
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central
European Institute of Technology, Brno University
of Technology, Purkyňova
123, 61200 Brno, Czech Republic
| | - Lenka Smid
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Tomas Rousar
- Department
of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532
10 Pardubice, Czech
Republic
| | - Jan M. Macak
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central
European Institute of Technology, Brno University
of Technology, Purkyňova
123, 61200 Brno, Czech Republic
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3
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Rousar T, Handl J, Capek J, Nyvltova P, Rousarova E, Kubat M, Smid L, Vanova J, Malinak D, Musilek K, Cesla P. Cysteine conjugates of acetaminophen and p-aminophenol are potent inducers of cellular impairment in human proximal tubular kidney HK-2 cells. Arch Toxicol 2023; 97:2943-2954. [PMID: 37639014 PMCID: PMC10504157 DOI: 10.1007/s00204-023-03569-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/02/2023] [Indexed: 08/29/2023]
Abstract
Acetaminophen (APAP) belong among the most used analgesics and antipyretics. It is structurally derived from p-aminophenol (PAP), a potent inducer of kidney toxicity. Both compounds can be metabolized to oxidation products and conjugated with glutathione. The glutathione-conjugates can be cleaved to provide cysteine conjugates considered as generally nontoxic. The aim of the present report was to synthesize and to purify both APAP- and PAP-cysteine conjugates and, as the first study at all, to evaluate their biological effects in human kidney HK-2 cells in comparison to parent compounds. HK-2 cells were treated with tested compounds (0-1000 µM) for up to 24 h. Cell viability, glutathione levels, ROS production and mitochondrial function were determined. After 24 h, we found that both APAP- and PAP-cysteine conjugates (1 mM) were capable to induce harmful cellular damage observed as a decrease of glutathione levels to 10% and 0%, respectively, compared to control cells. In addition, we detected the disappearance of mitochondrial membrane potential in these cells. In the case of PAP-cysteine, the extent of cellular impairment was comparable to that induced by PAP at similar doses. On the other hand, 1 mM APAP-cysteine induced even larger damage of HK-2 cells compared to 1 mM APAP after 6 or 24 h. We conclude that cysteine conjugates with aminophenol are potent inducers of oxidative stress causing significant injury in kidney cells. Thus, the harmful effects cysteine-aminophenolic conjugates ought to be considered in the description of APAP or PAP toxicity.
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Affiliation(s)
- Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic.
| | - Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Erika Rousarova
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Miroslav Kubat
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Lenka Smid
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - Jana Vanova
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
| | - David Malinak
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Petr Cesla
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532 10, Pardubice, Czech Republic
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4
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Benek O, Vaskova M, Miskerikova M, Schmidt M, Andrys R, Rotterova A, Skarka A, Hatlapatkova J, Karasova JZ, Medvecky M, Hroch L, Vinklarova L, Fisar Z, Hroudova J, Handl J, Capek J, Rousar T, Kobrlova T, Dolezal R, Soukup O, Aitken L, Gunn-Moore F, Musilek K. Development of submicromolar 17β-HSD10 inhibitors and their in vitro and in vivo evaluation. Eur J Med Chem 2023; 258:115593. [PMID: 37390508 DOI: 10.1016/j.ejmech.2023.115593] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 12/23/2022] [Revised: 05/13/2023] [Accepted: 06/23/2023] [Indexed: 07/02/2023]
Abstract
17β-hydroxysteroid dehydrogenase type 10 (17β-HSD10) is a multifunctional mitochondrial enzyme and putative drug target for the treatment of various pathologies including Alzheimer's disease or some types of hormone-dependent cancer. In this study, a series of new benzothiazolylurea-based inhibitors were developed based on the structure-activity relationship (SAR) study of previously published compounds and predictions of their physico-chemical properties. This led to the identification of several submicromolar inhibitors (IC50 ∼0.3 μM), the most potent compounds within the benzothiazolylurea class known to date. The positive interaction with 17β-HSD10 was further confirmed by differential scanning fluorimetry and the best molecules were found to be cell penetrable. In addition, the best compounds weren't found to have additional effects for mitochondrial off-targets and cytotoxic or neurotoxic effects. The two most potent inhibitors 9 and 11 were selected for in vivo pharmacokinetic study after intravenous and peroral administration. Although the pharmacokinetic results were not fully conclusive, it seemed that compound 9 was bioavailable after peroral administration and could penetrate into the brain (brain-plasma ratio 0.56).
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Affiliation(s)
- Ondrej Benek
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic.
| | - Michaela Vaskova
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Marketa Miskerikova
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Monika Schmidt
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Rudolf Andrys
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Aneta Rotterova
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Adam Skarka
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Jana Hatlapatkova
- University of Defence, Faculty of Military Health Sciences, Department of Toxicology and Military Pharmacy, Trebesska 1575, 500 01, Hradec Kralove, Czech Republic
| | - Jana Zdarova Karasova
- University of Defence, Faculty of Military Health Sciences, Department of Toxicology and Military Pharmacy, Trebesska 1575, 500 01, Hradec Kralove, Czech Republic
| | - Matej Medvecky
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic; University of Warwick, Bioinformatics Research Technology Platform, Coventry, CV4 7AL, United Kingdom
| | - Lukas Hroch
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Lucie Vinklarova
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic
| | - Zdenek Fisar
- Charles University and General University Hospital in Prague, First Faculty of Medicine, Department of Psychiatry, Ke Karlovu 11, 120 00, Prague 2, Czech Republic
| | - Jana Hroudova
- Charles University and General University Hospital in Prague, First Faculty of Medicine, Department of Psychiatry, Ke Karlovu 11, 120 00, Prague 2, Czech Republic
| | - Jiri Handl
- University of Pardubice, Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, Studentska 573, Pardubice, 53210, Czech Republic
| | - Jan Capek
- University of Pardubice, Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, Studentska 573, Pardubice, 53210, Czech Republic
| | - Tomas Rousar
- University of Pardubice, Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, Studentska 573, Pardubice, 53210, Czech Republic
| | - Tereza Kobrlova
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Rafael Dolezal
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic
| | - Laura Aitken
- University of St. Andrews, School of Biology, Biomedical Science Research Complex, North Haugh, St. Andrews KY16 9ST, United Kingdom
| | - Frank Gunn-Moore
- University of St. Andrews, School of Biology, Biomedical Science Research Complex, North Haugh, St. Andrews KY16 9ST, United Kingdom
| | - Kamil Musilek
- University of Hradec Kralove, Faculty of Science, Department of Chemistry, Rokitanskeho 62, 500 03, Hradec Kralove, Czech Republic; University Hospital Hradec Kralove, Biomedical Research Centre, Sokolska 581, 500 05, Hradec Kralove, Czech Republic.
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5
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Svobodova B, Pulkrabkova L, Panek D, Misiachna A, Kolcheva M, Andrys R, Handl J, Capek J, Nyvltova P, Rousar T, Prchal L, Hepnarova V, Hrabinova M, Muckova L, Tosnerova D, Karabanovich G, Finger V, Soukup O, Horak M, Korabecny J. Structure-Guided Design of N-Methylpropargylamino-Quinazoline Derivatives as Multipotent Agents for the Treatment of Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24119124. [PMID: 37298087 DOI: 10.3390/ijms24119124] [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: 05/08/2023] [Revised: 05/19/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023] Open
Abstract
Alzheimer's disease (AD) is a complex disease with an unknown etiology. Available treatments, limited to cholinesterase inhibitors and N-methyl-d-aspartate receptor (NMDAR) antagonists, provide symptomatic relief only. As single-target therapies have not proven effective, rational specific-targeted combination into a single molecule represents a more promising approach for treating AD, and is expected to yield greater benefits in alleviating symptoms and slowing disease progression. In the present study, we designed, synthesized, and biologically evaluated 24 novel N-methylpropargylamino-quinazoline derivatives. Initially, compounds were thoroughly inspected by in silico techniques determining their oral and CNS availabilities. We tested, in vitro, the compounds' effects on cholinesterases and monoamine oxidase A/B (MAO-A/B), as well as their impacts on NMDAR antagonism, dehydrogenase activity, and glutathione levels. In addition, we inspected selected compounds for their cytotoxicity on undifferentiated and differentiated neuroblastoma SH-SY5Y cells. We collectively highlighted II-6h as the best candidate endowed with a selective MAO-B inhibition profile, NMDAR antagonism, an acceptable cytotoxicity profile, and the potential to permeate through BBB. The structure-guided drug design strategy applied in this study imposed a novel concept for rational drug discovery and enhances our understanding on the development of novel therapeutic agents for treating AD.
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Affiliation(s)
- Barbora Svobodova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Lenka Pulkrabkova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Dawid Panek
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Physicochemical Drug Analysis, Chair of Pharmaceutical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Anna Misiachna
- Department of Neurochemistry, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic
- Department of Physiology, Faculty of Science, Charles University in Prague, Albertov 6, 128 43 Prague, Czech Republic
| | - Marharyta Kolcheva
- Department of Neurochemistry, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic
| | - Rudolf Andrys
- Department of Chemistry, Faculty of Science, University Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Lukas Prchal
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
| | - Vendula Hepnarova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Martina Hrabinova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Lubica Muckova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Daniela Tosnerova
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Galina Karabanovich
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Vladimir Finger
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 500 01 Hradec Kralove, Czech Republic
| | - Martin Horak
- Department of Neurochemistry, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic
| | - Jan Korabecny
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic
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6
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Fialova K, Motlochova M, Cermakova L, Novotna K, Bacova J, Rousar T, Subrt J, Pivokonsky M. Removal of manganese by adsorption onto newly synthesized TiO 2-based adsorbent during drinking water treatment. Environ Technol 2023; 44:1322-1333. [PMID: 34710003 DOI: 10.1080/09593330.2021.2000042] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Manganese is naturally present in water, but its increased concentration in potable water is undesirable for multiple reasons. This study investigates an alternative method of demanganization by a newly synthesized TiO2-based adsorbent prepared through the transformation of titanyl sulphate monohydrate to amorphous sodium titanate. Its adsorption capacity for Mn2+ was determined, while a range of influential factors, such as the effect of contact time, adsorbent dosage, pH value, and added ions was evaluated. The adsorbent appeared highly effective for Mn2+ removal owing to its unique characteristics. Besides adsorption via electrostatic interactions, ion-exchange was also involved in the Mn2+ removal. Although the Mn2+ removal occurred within the whole investigated pH range of 4-8, the maximum was achieved at pH 7, with qe = 73.83 mg g-1. Equilibrium data revealed a good correlation with Langmuir isotherm in the absence of any ions or in the presence of monovalent co-existing ions, while the results in the presence of divalent co-existing ions showed a better fit to Freundlich isotherm. Additionally, the presence of monovalent cations (Na+, K+) only slightly decreased the Mn2+ removal efficiency as compared to divalent cations (Ca2+, Mg2+) that caused a greater decrease; however, the effect of anions (Cl-, SO42-) was insignificant. To provide insight into the adsorbent safety, the toxicity assessment was performed and showed no harmful effect on cell activity. Furthermore, the residual concentration of titanium after adsorption was always below the detection limit. The results imply that the synthesized TiO2-based adsorbent is a safe promising alternative method for demanganization.Highlights The synthesis of amorphous TiO2-based adsorbent was presented.The TiO2-based adsorbent was found to be efficient for Mn2+ removal.The Mn2+ removal mechanisms were adsorption and ion-exchange.Increasing pH enhanced the efficiency of Mn2+ removal.Divalent cations decreased the Mn2+ removal efficiency more than monovalent cations.
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Affiliation(s)
- Katerina Fialova
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Monika Motlochova
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Rez, Czech Republic
| | - Lenka Cermakova
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Katerina Novotna
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jana Bacova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Jan Subrt
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Rez, Czech Republic
| | - Martin Pivokonsky
- Institute of Hydrodynamics of the Czech Academy of Sciences, Prague, Czech Republic
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7
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Bacova J, Knotek P, Kopecka K, Hromadko L, Capek J, Nyvltova P, Bruckova L, Schröterova L, Sestakova B, Palarcik J, Motola M, Cizkova D, Bezrouk A, Handl J, Fiala Z, Rudolf E, Bilkova Z, Macak JM, Rousar T. Evaluating the Use of TiO 2 Nanoparticles for Toxicity Testing in Pulmonary A549 Cells. Int J Nanomedicine 2022; 17:4211-4225. [PMID: 36124012 PMCID: PMC9482439 DOI: 10.2147/ijn.s374955] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/21/2022] [Indexed: 12/11/2022] Open
Abstract
Purpose Titanium dioxide nanoparticles, 25 nm in size of crystallites (TiO2 P25), are among the most produced nanomaterials worldwide. The broad use of TiO2 P25 in material science has implied a request to evaluate their biological effects, especially in the lungs. Hence, the pulmonary A549 cell line has been used to estimate the effects of TiO2 P25. However, the reports have provided dissimilar results on caused toxicity. Surprisingly, the physicochemical factors influencing TiO2 P25 action in biological models have not been evaluated in most reports. Thus, the objective of the present study is to characterize the preparation of TiO2 P25 for biological testing in A549 cells and to evaluate their biological effects. Methods We determined the size and crystallinity of TiO2 P25. We used four techniques for TiO2 P25 dispersion. We estimated the colloid stability of TiO2 P25 in distilled water, isotonic NaCl solution, and cell culture medium. We applied the optimal dispersion conditions for testing the biological effects of TiO2 P25 (0–100 µg.mL−1) in A549 cells using biochemical assays (dehydrogenase activity, glutathione levels) and microscopy. Results We found that the use of fetal bovine serum in culture medium is essential to maintain sufficient colloid stability of dispersed TiO2 P25. Under these conditions, TiO2 P25 were unable to induce a significant impairment of A549 cells according to the results of biochemical and microscopy evaluations. When the defined parameters for the use of TiO2 P25 in A549 cells were met, similar results on the biological effects of TiO2 P25 were obtained in two independent cell laboratories. Conclusion We optimized the experimental conditions of TiO2 P25 preparation for toxicity testing in A549 cells. The results presented here on TiO2 P25-induced cellular effects are reproducible. Therefore, our results can be helpful for other researchers using TiO2 P25 as a reference material.
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Affiliation(s)
- Jana Bacova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Petr Knotek
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Katerina Kopecka
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Ludek Hromadko
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Lenka Bruckova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Ladislava Schröterova
- Department of Medical Biology and Genetics, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Blanka Sestakova
- Department of Medical Biology and Genetics, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Jiri Palarcik
- Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Martin Motola
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Dana Cizkova
- Department of Histology and Embryology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Ales Bezrouk
- Department of Medical Biophysics, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Zdenek Fiala
- Department of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Emil Rudolf
- Department of Medical Biology and Genetics, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Jan M Macak
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
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8
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Handl J, Nyvltova P, Capek J, Cesla P, Hovsepyan A, Avetisyan S, Micankova P, Bruckova L, Stankova P, Knotkova K, Petrosyan T, Rousar T. The comparison of biological effects of bacterial and synthetic melanins in neuroblastoma cells. Food Chem Toxicol 2022; 168:113355. [PMID: 35952821 DOI: 10.1016/j.fct.2022.113355] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 11/26/2022]
Abstract
Melanins belong to a group of pigments of different structure and origin. They can be produced synthetically or isolated from living organisms. A number of studies have reported testing of various melanins in neurological studies providing different outcomes. Because the structure of melanins can have an effect on obtained results in cell toxicity studies, we present here our original study which aimed to compare the biological effects of bacterial melanin (biotechnologically obtained from B. thuringiensis) with that of synthetic melanin in neuroblastoma cells. Both melanins were structurally characterized in detail. After melanin treatment (0-200 μg/mL), cell viability, glutathione levels, cell morphology and respiration were assessed in SH-SY5Y cells. The structural analysis showed that bacterial melanin is more hydrophilic according to the presence of larger number of -OH moieties. After melanin treatment, we found that synthetic melanin at similar dosage caused always larger cell impairment compared to bacterial melanin. In addition, more severe toxic effect of synthetic melanin was found in mitochondria. In general, we conclude that more hydrophilic, bacterial melanin induced lower toxicity in neuroblastoma cells in comparison to synthetic melanin. Our findings can be useable for neuroscientific studies estimating the potential use for study of neuroprotection, neuromodulation or neurotoxicity.
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Affiliation(s)
- Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Petr Cesla
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Anichka Hovsepyan
- Scientific and Production Center "Armbiotechnology" SNPO NAS RA, 14 Gyurjyan St., Yerevan, Armenia
| | - Sona Avetisyan
- Scientific and Production Center "Armbiotechnology" SNPO NAS RA, 14 Gyurjyan St., Yerevan, Armenia
| | - Petra Micankova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Lenka Bruckova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Pavla Stankova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Katerina Knotkova
- Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Tigran Petrosyan
- Department of Physiology and Pathophysiology, Medical Institute, Yerevan Haybusak University, 6 Abelyan St., Yerevan, Armenia
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic.
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9
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Vanova J, Malinak D, Andrys R, Kubat M, Mikysek T, Rousarova E, Musilek K, Rousar T, Cesla P. Optimization of Gradient Reversed Phase High Performance Liquid Chromatography Analysis of Acetaminophen Oxidation Metabolites using Linear and Non-linear Retention Model. J Chromatogr A 2022; 1669:462956. [DOI: 10.1016/j.chroma.2022.462956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/28/2022] [Accepted: 03/09/2022] [Indexed: 11/15/2022]
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10
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Majtnerova P, Capek J, Petira F, Handl J, Rousar T. Quantitative spectrofluorometric assay detecting nuclear condensation and fragmentation in intact cells. Sci Rep 2021; 11:11921. [PMID: 34099803 PMCID: PMC8184882 DOI: 10.1038/s41598-021-91380-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/21/2021] [Indexed: 12/17/2022] Open
Abstract
At present, nuclear condensation and fragmentation have been estimated also using Hoechst probes in fluorescence microscopy and flow cytometry. However, none of the methods used the Hoechst probes for quantitative spectrofluorometric assessment. Therefore, the aim of the present study was to develop a spectrofluorometric assay for detection of nuclear condensation and fragmentation in the intact cells. We used human hepatoma HepG2 and renal HK-2 cells cultured in 96-well plates treated with potent apoptotic inducers (i.e. cisplatin, staurosporine, camptothecin) for 6-48 h. Afterwards, the cells were incubated with Hoechst 33258 (2 µg/mL) and the increase of fluorescence after binding of the dye to DNA was measured. The developed spectrofluorometric assay was capable to detect nuclear changes caused by all tested apoptotic inducers. Then, we compared the outcomes of the spectrofluorometric assay with other methods detecting cell impairment and apoptosis (i.e. WST-1 and glutathione tests, TUNEL, DNA ladder, caspase activity, PARP-1 and JNKs expressions). We found that our developed spectrofluorometric assay provided results of the same sensitivity as the TUNEL assay but with the advantages of being fast processing, low-cost and a high throughput. Because nuclear condensation and fragmentation can be typical markers of cell death, especially in apoptosis, we suppose that the spectrofluorometric assay could become a routinely used method for characterizing cell death processes.
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Affiliation(s)
- Pavlina Majtnerova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Filip Petira
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic.
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11
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Handl J, Malinak D, Capek J, Andrys R, Rousarova E, Hauschke M, Bruckova L, Cesla P, Rousar T, Musilek K. Effects of Charged Oxime Reactivators on the HK-2 Cell Line in Renal Toxicity Screening. Chem Res Toxicol 2021; 34:699-703. [PMID: 33566584 DOI: 10.1021/acs.chemrestox.0c00489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Oxime cholinesterase reactivators (oximes) are used to counteract organophosphate intoxication. Charged oximes are administered via intramuscular or intravenous injection when the majority of dose is unmetabolized and is excreted as urine. In this study, the effects of selected double charged oximes were determined in the HK-2 cell line as a model for renal toxicity screening. Some effects on dehydrogenase activity were found for obidoxime, asoxime (syn. HI-6), K027, and K203. The effects of K868 and K869 were found to be unreliable due to rapid degradation of both chlorinated oximes in the assay medium, resulting for K868 in an isoxazole-pyridinium product.
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Affiliation(s)
- Jiri Handl
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - David Malinak
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Jan Capek
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Rudolf Andrys
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Erika Rousarova
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Martina Hauschke
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Lenka Bruckova
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Petr Cesla
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Tomas Rousar
- Faculty of Chemical Technology, Department of Biological and Biochemical Sciences, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Kamil Musilek
- Faculty of Science, Department of Chemistry, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
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12
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Motola M, Capek J, Zazpe R, Bacova J, Hromadko L, Bruckova L, Ng S, Handl J, Spotz Z, Knotek P, Baishya K, Majtnerova P, Prikryl J, Sopha H, Rousar T, Macak JM. Thin TiO2 Coatings by ALD Enhance the Cell Growth on TiO2 Nanotubular and Flat Substrates. ACS Appl Bio Mater 2020; 3:6447-6456. [DOI: 10.1021/acsabm.0c00871] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Martin Motola
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Raul Zazpe
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jana Bacova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Ludek Hromadko
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Lenka Bruckova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Siowwoon Ng
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Zdenek Spotz
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Petr Knotek
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Kaushik Baishya
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Pavlina Majtnerova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Jan Prikryl
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
| | - Hanna Sopha
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic
| | - Jan M. Macak
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 530 02 Pardubice, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
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13
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Hromadkova L, Kupcik R, Jankovicova B, Rousar T, Ripova D, Bilkova Z. Difficulties associated with the structural analysis of proteins susceptible to form aggregates: The case of Tau protein as a biomarker of Alzheimer's disease. J Sep Sci 2015; 39:799-807. [PMID: 26644024 DOI: 10.1002/jssc.201501045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 09/17/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 11/05/2022]
Abstract
Mass spectrometry coupled with bioaffinity separation techniques is considered a powerful tool for studying protein interactions. This work is focused on epitope analysis of tau protein, which contains two VQIXXK aggregation motifs regarded as crucial elements in the formation of paired helical filaments, the main pathological characteristics of Alzheimer's disease. To identify major immunogenic structures, the epitope extraction technique utilizing protein fragmentation and magnetic microparticles functionalized with specific antibodies was applied. However, the natural adhesiveness of some newly generated peptide fragments devalued the experimental results. Beside presumed peptide fragment specific to applied monoclonal anti-tau antibodies, the epitope extraction repeatedly revealed inter alia tryptic fragment 299-HVPGGGSVQIVYKPVDLSK-317 containing the fibril-forming motif 306-VQIVYK-311. The tryptic fragment pro-aggregation and hydrophobic properties that might contribute to adsorption phenomenon were examined by Thioflavin S and reversed-phase chromatography. Several conventional approaches to reduce the non-specific fragment sorption onto the magnetic particle surface were performed, however with no effect. To avoid methodological complications, we introduced an innovative approach based on altered proteolytic digestion. Simultaneous fragmentation of tau protein by two immobilized proteases differing in the cleavage specificity (TPCK-trypsin and α-chymotrypsin) led to the disruption of motif responsible for undesirable adhesiveness and enabled us to obtain undistorted structural data.
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Affiliation(s)
- Lenka Hromadkova
- Department of Neurobiology and AD Center, National Institute of Mental Health, Klecany, Czech Republic.,Faculty of Science, Charles University in Prague, Prague, Czech Republic.,Department of Biological and Biochemical Sciences, University of Pardubice, Pardubice, Czech Republic
| | - Rudolf Kupcik
- Department of Biological and Biochemical Sciences, University of Pardubice, Pardubice, Czech Republic
| | - Barbora Jankovicova
- Department of Biological and Biochemical Sciences, University of Pardubice, Pardubice, Czech Republic
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, University of Pardubice, Pardubice, Czech Republic
| | - Daniela Ripova
- Department of Neurobiology and AD Center, National Institute of Mental Health, Klecany, Czech Republic
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, University of Pardubice, Pardubice, Czech Republic
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14
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Mezera V, Kucera O, Moravcova A, Peterova E, Rousar T, Rychtrmoc D, Sobotka O, Cervinkova Z. Comparison of acetaminophen toxicity in primary hepatocytes isolated from transgenic mice with different appolipoprotein E alleles. J Physiol Pharmacol 2015; 66:863-873. [PMID: 26769836] [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: 06/02/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
The nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor, important for combating electrophilic and oxidative stress in the liver and other organs. This encompasses detoxification of hepatotoxic drugs, including acetaminophen (APAP). Recently, an association between apolipoprotein E (ApoE) genotype and Nrf2 expression was described. We compared the toxicity of APAP on primary culture hepatocytes isolated from transgenic mice carrying two different human ApoE alleles and wild-type controls. The cells were exposed to APAP in concentrations from 0.5 to 4 mM for up to 24 hours. APAP led to a dose-dependent hepatotoxicity from 1 mM after 16 h exposure in all mice tested. The toxicity was higher in hepatocytes isolated from both transgenic strains than in wild-type controls and most pronounced in ApoE3 mice. Concurrently, there was a decline in mitochondrial membrane potential, especially in ApoE3 hepatocytes. The formation of reactive oxygen species was increased after 24 hours with 2.5 mM APAP in hepatocytes of all strains tested, with the highest increase being in the ApoE3 genotype. The activity of caspases 3 and 7 did not differ among groups and was minimal after 24 hour incubation with 4 mM APAP. We observed higher lipid accumulation in hepatocytes isolated from both transgenic strains than in wild-type controls. The expression of Nrf2-dependent genes was higher in ApoE3 than in ApoE4 hepatocytes and some of these genes were induced by APAP treatment. In conclusion, transgenic mice with ApoE4 and ApoE3 alleles displayed higher susceptibility to acute APAP toxicity in vitro than wild-type mice. Of the two transgenic genotypes tested, ApoE3 allele carriers were more prone to injury.
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Affiliation(s)
- V Mezera
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic.
| | - O Kucera
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - A Moravcova
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - E Peterova
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - T Rousar
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - D Rychtrmoc
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - O Sobotka
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - Z Cervinkova
- Department of Physiology, Faculty of Medicine in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
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15
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Kucera O, Rousar T, Mezera V, Cervinkova Z. Comparison of acetaminophen toxicity in rat and mouse hepatocytes in vitro. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.815] [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: 10/24/2022]
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Rousar T, Vrbova M, Kucera O, Nydlova E, Cervinkova Z. Comparison of acetaminophen hepatotoxicity and nephrotoxicity in vitro. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.308] [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: 11/17/2022]
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17
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Nydlova E, Vrbova M, Kucera O, Cesla P, Cervinkova Z, Rousar T. Estimation of toxic effect of acetaminophen metabolite in isolated mitochondria. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.294] [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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18
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Rousar T, Pařík P, Kucera O, Bartos M, Červinková Z. Glutathione reductase is inhibited by acetaminophen-glutathione conjugate in vitro. Physiol Res 2009; 59:225-232. [PMID: 19537930 DOI: 10.33549/physiolres.931744] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The aim of the present work was to investigate a new mechanism likely contributing to the toxic action of acetaminophen, especially to explore the possible inhibition of glutathione reductase through an acetaminophen-glutathione conjugate (APAP-SG). APAP-SG conjugate was synthesized by organic synthesis and purified by column chromatography. The inhibitory effect of the conjugate on two types of glutathione reductase (from yeasts and rat hepatocytes) was tested spectro-photometrically. We found that the enzyme activity was reduced similarly after the treatment with 2.96 mM acetaminophen-glutathione conjugate in both yeast and hepatocyte glutathione reductases (GR); the enzyme activity was inhibited to 52.7+/-1.5 % (2.4+/-0.3 mU/ml) in yeast GR (control activity was 5.6+/-0.3 mU/ml) and to 48.1+/-8.8 % (2.2+/-0.2 mU/ml) in rat hepatocytes lysate GR (control activity was 5.2+/-0.2 mU/ml). In addition, the enzyme activity (from hepatocytes lysate) was decreased to 79+/-7 %, 67+/-2 % and 39+/-7 %, in 0.37, 1.48 and 3.7 mM concentration of the conjugate, respectively. We found that glutathione reductase, the essential enzyme of the antioxidant system, was dose-dependently inhibited by the product of acetaminophen metabolism - the conjugate of acetaminophen and glutathione.
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Affiliation(s)
- T Rousar
- Department of Physiology, Faculty of Medicine in Hradec Králové, Charles University in Prague, Hradec Králové, Czech Republic.
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Skalicky J, Muzakova V, Kandar R, Meloun M, Rousar T. Oxidative stress and metabolic syndrome in obese adults with and without controlled diet restriction. BRATISL MED J 2009; 110:152-157. [PMID: 19507634] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND Metabolic syndrome (MetS) represents a collection of markers associated with cardiovascular morbidity and mortality. Due to its high prevalence and steady increase of the occurrence, prevention or management of MetS is of paramount importance. The aim of our study was to evaluate MetS occurrence and extent of oxidative stress by comparing obese adults after diet optimization with untreated controls. MATERIAL AND METHODS Oxidative stress markers (total amount of free radicals, malondialdehyde, allantoin, alpha1-antiproteinase, GSSG/GSH ratio), total antioxidant capacity and lipid standardized alpha-tocopherol were determined in 40 obese people and 48 healthy controls. The obese people were divided into two group A: obese with restricted energy intake with lowered dietary carbohydrates (n=20) and group B: with the same grade of obesity but without following dietary recommendations (n=20). RESULTS Group A exhibited lower oxidative stress markers than group B; free radicals (5.18+/-1.68 vs 8.43+/-3.66 mmol/l, p<0.01), GSSG/GSH ratio (11.74+/-5.01 vs 15.38+/-5.93%, p<0.05) and higher antioxidants: lipid standardized alpha-tocopherol (3.70+/-0.51 vs 3.35+/-0.60, p<0.05) and ceruloplasmin (0.24+/-0.08 vs 0.21+/-0.03 g/l, p<0.05), in the course of same grade of obesity. Furthermore MetS occurrence was found significantly lower was in group A. CONCLUSION The energy intake restriction by 2000 kJ, mainly due to carbohydrate limitations, was associated with decreased oxidative stress and simultaneously increased lipid-standardized alpha-tocopherol and ceruloplasmin in obese people. These changes correlated with diminished MetS occurrence by about 50% (Tab. 3, Ref. 32). Full Text (Free, PDF) www.bmj.sk.
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Affiliation(s)
- J Skalicky
- Department of Clinical Biochemistry and Diagnostics, Regional Hospital of Pardubice, Pardubice, Czech Republic.
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Rousar T, Kucera O, Krivakova P, Lotkova H, Muzakova V, Cervinkova Z. Evaluation of oxidative stress in acetaminophen treated hepatocytes in vitro. Toxicol Lett 2008. [DOI: 10.1016/j.toxlet.2008.06.454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Kucera O, Krivakova P, Rousar T, Lotkova H, Cervinkova Z. Model of non-alcoholic fatty liver disease in rats for toxicological studies. Toxicol Lett 2008. [DOI: 10.1016/j.toxlet.2008.06.617] [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: 11/16/2022]
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Rousar T, Kucera O, Křiváková P, Lotková H, Kanďár R, Mužáková V, Červinková Z. Evaluation of oxidative status in acetaminophen treated rat hepatocytes in culture. Physiol Res 2008; 58:239-246. [PMID: 18380536 DOI: 10.33549/physiolres.931437] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The present study describes the estimation of acetaminophen (AAP) toxicity in cultured rat hepatocytes. We used different concentrations of AAP - 1, 2.5, 5, 10 and 20 mM, to test influence of AAP on cellular viability, functional capacity and oxidative status at given time intervals. WST 1 test showed decrease of dehydrogenase activity in 5, 10 and 20 mM AAP to 75 % of control values after 1 hour of incubation. At 12 h of treatment, all AAP concentrations decreased WST-1 signal; no enzyme activity was found since 18 h in cells treated with 20 mM AAP according to LDH leakage test performed at 24 h of incubation. Functional capacity was tested by albumin assay where the decrease was strictly related to AAP dose. Intracellular oxidative status was assessed by analysis of GSH/GSSG levels and time course of ROS production and glutathione reductase (GR) activity. Increased ROS production was found already after 3 h of incubation in 2.5, 5, 10 and 20 mM AAP, respectively. The highest ROS production was measured after 12 h treatment. GR activity was decreased already after 3 h of incubation and remained also decreased in cells treated with 2.5, 5, 10 and 20 mM AAP during further incubation.
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Affiliation(s)
- T Rousar
- Department of Physiology, Charles University in Prague, Hradec Králové, Czech Republic.
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Skalicky J, Muzakova V, Kandar R, Meloun M, Rousar T, Palicka V. Evaluation of oxidative stress and inflammation in obese adults with metabolic syndrome. Clin Chem Lab Med 2008; 46:499-505. [DOI: 10.1515/cclm.2008.096] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Kucera O, Cervinková Z, Lotková H, Kriváková P, Rousar T, Muzáková V, Hézová R, Kandár R, Rudolf E. Protective effect of S-adenosylmethionine against galactosamine-induced injury of rat hepatocytes in primary culture. Physiol Res 2005; 55:551-560. [PMID: 16343037 DOI: 10.33549/physiolres.930869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The protective effect of S-adenosylmethionine (SAMe) on D-galactosamine (GalN)-induced damage to rat hepatocytes was tested in primary cultures. SAMe at concentrations of 50 and 1000 mg/l significantly reduced lactate dehydrogenase release from cells injured by 40 mM GalN after 24 h of incubation. There were no significant changes in urea production after 24 h among tested groups, including control hepatocytes. Exposure of hepatocytes to GalN leads to 3.5-fold decrease in urea synthesis after 48 h in comparison with control cell cultures. Addition of the highest dose of SAMe (1000 mg/l) into the culture media attenuated this decrease by 180 %. None of the tested doses of SAMe (5, 25, 50 and 1000 mg/l) affected considerably the reduced activity of mitochondrial dehydrogenases. The content of reduced and oxidized glutathione in GalN-exposed cells was diminished to 1.5 % and 16 %, respectively, of the control values after 24 h. Using only the highest concentration SAMe increased significantly these contents. SAMe had no effect on dramatically decreased albumin synthesis. These findings indicate beneficial effect of SAMe, especially of the highest concentration, on GalN-induced toxicity to rat hepatocytes in primary culture. This action of SAMe seems to be associated with reduction of plasma membrane damage and increased synthesis of glutathione.
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Affiliation(s)
- O Kucera
- Department of Physiology, Faculty of Medicine in Hradec Králové, Charles University in Prague, Hradec Králové, Czech Republic.
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Muzáková V, Vojtísek P, Meloun M, Vanková R, Rousar T, Cervinková Z. Antioxidant vitamin levels do not exhibit negative correlation with the extent of acute myocardial infarction. Physiol Res 2005; 54:623-9. [PMID: 15717862] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
Serum levels of vitamin E (VE), beta-carotene (BC) and vitamin C (VC) were determined in 50 patients with the first acute myocardial infarction (AMI) before starting thrombolytical treatment. VE and BC were determined by HPLC, VC spectrophotometrically. The reperfused patients were divided according to vitamin concentrations into four groups. The lowest quartile was compared with the rest of the studied population (VE: group with high (H)>15.6 microM>group with low (L), BC: H>0.07 microM>L, VC: H>25 microM>L) in the following parameters: extent of myocardial damage (area under the curves of troponin I, CK-MB during 48 h), arrhythmia and congestive heart failure occurrence, size of ejection fraction, positivity of ventricular late potentials. No significant differences between groups H and L for either VE, BC or VC were found (P 0.05). As no correlation between serum concentrations of vitamins E, C and beta-carotene and the extent and clinical course of AMI was found, the actual vitamin concentrations may be important for prevention of ischemic heart a disease, but they do not play a decisive role in the acute phase of myocardial infarction in humans.
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Affiliation(s)
- V Muzáková
- Faculty of Chemical Technology, University of Pardubice, Strossova 239, 530 03 Pardubice, Czech Republic.
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Muzáková V, Rousar T, Vojtísek P, Skalický J. Antioxidant vitamin pool in senior population. Cent Eur J Public Health 2004; 12 Suppl:S64-6. [PMID: 15141983] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
AIM To compare plasma concentration of alpha-tocopherol and ascorbic acid in healthy seniors (age over 65 years), senior patients with either diabetes mellitus, acute myocardial infarction or dyslipidemia and recommended values of these vitamins. METHODS Studied groups included 30 patients with diabetes mellitus (DM); 30 patients 1 - 2 weeks after acute myocardial infarction (AMI); 11 patients with lipid metabolism disorder (LD, total cholesterol > 6.2 mM); and control group of 27 healthy persons. RESULTS Concentration of alpha-tocopherol in DM group was 14.6 +/- 5.3 microM, in AMI group 13.7 +/- 5.6 microM, in LD group 15.9 +/- 5.6 microM and in control group 12.9 +/- 4.1 microM. No statistically significant differences were found. However, comparison of determined values with levels recommended for prevention revealed remarkable low plasma concentration of alpha-tocopherol in the Czech population. Plasma concentration of ascorbic acid in DM group was 47.07 +/- 22.80 microM, in AMI group 33.15 +/- 12.81 microM, in LD group 45.59 +/- 23.02 microM and in control group 43.28 +/- 26.57 microM. No statistically significant differences were found between the controls and individual groups of patients. Plasma concentrations of vitamin C reached the recommended value in all cases except the AMI group, where it was significantly lower. CONCLUSION Seniors in the Czech population were proved to be significantly short of alpha-tocopherol, minor shortage of vitamin C was found only in group of patients with myocardial infarction.
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Affiliation(s)
- V Muzáková
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Czech Republic.
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