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Vargová Z, Olejníková P, Kuzderová G, Rendošová M, Havlíčková J, Gyepes R, Vilková M. Silver(I) complexes with amino acid and dipeptide ligands - Chemical and antimicrobial relevant comparison (mini review). Bioorg Chem 2023; 141:106907. [PMID: 37844541 DOI: 10.1016/j.bioorg.2023.106907] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/26/2023] [Accepted: 10/06/2023] [Indexed: 10/18/2023]
Abstract
Diseases caused by various microorganisms accompany humans (as well as animals) throughout their whole lives. After germs penetration to the body, the incubation period and infection developing, an infection can cause mild or severe symptoms, not infrequently even death. The immune system naturally defends itself against pathogens with various mechanisms. One of them is the synthesis of antimicrobial peptides. In the case of serious and severe infections, it is currently possible to help the natural immunity by administration of antimicrobial drugs (AMB) with good success since their discovery at the beginning of the last century. However, their excessive use leads to the development of pathogenic microorganisms' resistance to AMB drugs. Based on this, it is necessary to constantly develop new classes of AMB drugs that will be effective against pathogens, even resistant ones. The field of bioinorganic chemistry, similarly to other biological, chemical, or pharmaceutical sciences, discovers various options and approaches for antimicrobial treatment, from the development of new drugs to drug delivery systems. One of the approaches is the design and preparation of potential drugs based on metal ions and antimicrobial peptides. Various metal ions and amino acid or peptide ligands are used for this purpose. In this mini review, we focused on a reliable comparison of the chemical structure and biological properties of selected silver(I) complexes based on amino acids and dipeptides.
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Affiliation(s)
- Zuzana Vargová
- Institute of Chemistry, Pavol Jozef Šafárik University, Moyzesova 11, Košice 041 54, Slovakia.
| | - Petra Olejníková
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, Bratislava 812 37, Slovakia
| | - Gabriela Kuzderová
- Institute of Chemistry, Pavol Jozef Šafárik University, Moyzesova 11, Košice 041 54, Slovakia
| | - Michaela Rendošová
- Institute of Chemistry, Pavol Jozef Šafárik University, Moyzesova 11, Košice 041 54, Slovakia
| | - Jana Havlíčková
- Institute of Chemistry, Charles University, Hlavova 2030, Prague 128 00, Czechia
| | - Róbert Gyepes
- Institute of Chemistry, Charles University, Hlavova 2030, Prague 128 00, Czechia
| | - Mária Vilková
- Institute of Chemistry, Pavol Jozef Šafárik University, Moyzesova 11, Košice 041 54, Slovakia
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Rendošová M, Gyepes R, Sovová S, Sabolová D, Vilková M, Olejníková P, Kello M, Lakatoš B, Vargová Z. Ga(III) pyridinecarboxylate complexes: potential analogues of the second generation of therapeutic Ga(III) complexes? J Biol Inorg Chem 2023; 28:591-611. [PMID: 37498326 PMCID: PMC10415494 DOI: 10.1007/s00775-023-02012-2] [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: 03/08/2023] [Accepted: 07/12/2023] [Indexed: 07/28/2023]
Abstract
A series of novel Ga(III)-pyridine carboxylates ([Ga(Pic)3]·H2O (GaPic; HPic = picolinic acid), H3O[Ga(Dpic)2]·H2O (GaDpic; H2Dpic = dipicolinic acid), [Ga(Chel)(H2O)(OH)]2·4H2O (GaChel; H2Chel = chelidamic acid) and [Ga(Cldpic)(H2O)(OH)]2 (GaCldpic; H2Cldpic = 4-chlorodipicolinic acid)) have been synthesized by simple one-step procedure. Vibrational spectroscopy (mid-IR), elemental analysis, thermogravimetric analysis and X-ray diffraction confirmed complexes molecular structure, inter and intramolecular interactions and their influence to spectral and thermal properties. Moreover, complex species speciation was described in Ga(III)-HPic and Ga(III)-H2Dpic systems by potentiometry and 1H NMR spectroscopy and mononuclear complex species were determined; [Ga(Pic)2]+ (logβ021 = 16.23(6)), [Ga(Pic)3] (logβ031 = 20.86(2)), [Ga(Dpic)2]- (logβ021 = 15.42(9)) and [Ga(Dpic)2(OH)]2- (logβ-121 = 11.08(4)). To confirm the complexes stability in 1% DMSO (primary solvent for biological testing), timescale 1H NMR spectra were measured (immediately after dissolution up to 96 h). Antimicrobial activity evaluated by IC50 (0.05 mM) is significant for GaDpic and GaCldpic against difficult to treat and multi-resistant P. aeruginosa. On the other hand, the GaPic complex is most effective against Jurkat, MDA-MB-231 and A2058 cancer cell lines and significantly also decreases the HepG2 cancer cells viability at 75 and 100 μM concentrations in a relatively short time (up to 48 h). In addition, fluorescence measurements have been used to elucidate bovine serum albumin binding activity between ligands, Ga(III) complexes and bovine serum albumin.
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Affiliation(s)
- Michaela Rendošová
- Department of Inorganic Chemistry, P. J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovak Republic
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 00, Prague, Czech Republic
| | - Simona Sovová
- Department of Biochemistry, P. J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovak Republic
| | - Danica Sabolová
- Department of Biochemistry, P. J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovak Republic
| | - Mária Vilková
- NMR Laboratory, P. J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovak Republic
| | - Petra Olejníková
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovak Republic
| | - Martin Kello
- Department of Pharmacology, P. J. Šafárik University, Trieda SNP 1, 040 11, Kosice, Slovak Republic
| | - Boris Lakatoš
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovak Republic
| | - Zuzana Vargová
- Department of Inorganic Chemistry, P. J. Šafárik University, Moyzesova 11, 041 54, Kosice, Slovak Republic.
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Rendošová M, Gyepes R, Kello M, Vilková M, Mudroňová D, Olejníková P, Cardiano P, Gama S, Milea D, Vargová Z. Silver(I) pyrrole- and furan-2-carboxylate complexes - From their design and characterization to antimicrobial, anticancer activity, lipophilicity and SAR. J Inorg Biochem 2023; 246:112266. [PMID: 37271621 DOI: 10.1016/j.jinorgbio.2023.112266] [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: 03/29/2023] [Revised: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/06/2023]
Abstract
Two silver(I) complexes with biologically relevant heterocyclic ligands, pyrrole and furan-2- carboxylic acid, were synthesized and their composition was confirmed using elemental, spectral, thermal and structural analyses. The {[Ag(Py2c)]}n (AgPy2c, Py2c = pyrrole-2-carboxylate) and {[Ag(Fu2c)]}n (AgFu2c, Fu2c = furan-2-carboxylate) solubility and stability in biological test stock solution were confirmed by 1H NMR spectroscopy. The X-ray analysis has enabled us to determine typical argentophilic interactions and bridging carboxylate coordination mode of both ligands. Potentiometric data analysis by BSTAC program resulted in the determination of the stability constant of only one species, i.e., the ML (M = Ag+, L = Fu2c-), log βML = 0.59 ± 0.04. Antimicrobial and anticancer tests were performed against selected microorganisms and cell lines with new silver(I) complexes and compared with AgSD (silver(I) sulfadiazine) and cisplatin. From their microbial toxicity point of view, selectivity was determined against lactobacilli (AgPy2c is 8× more effective against S. aureus and E. coli and AgFu2c is 8× more effective against E. coli and 4× against S. aureus). AgFu2c significant anticancer activity was determined against Jurkat cell lines (IC50 = 8.00 μM) and was similar to cisPt (IC50 = 6.3 μM) similarly to its selectivity (SI (AgFu2c) = 7.3, SI (cisPt) = 6.4, SI = selectivity index). In addition, cell cycle arrest was observed already in the Sub-G0 phase during a flow cytometry experiment. To evaluate the AgPy2c and AgFu2c bioavailability we also discuss their Lipinski's Rule of Five.
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Affiliation(s)
- Michaela Rendošová
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia
| | - Róbert Gyepes
- Institute of Chemistry, Charles University, Hlavova 2030, 128 00 Praha, Czechia
| | - Martin Kello
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Trieda SNP 1, 040 11 Košice, Slovakia
| | - Mária Vilková
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia
| | - Dagmar Mudroňová
- Department of Microbiology and Immunology, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovakia
| | - Petra Olejníková
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Paola Cardiano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, CHIBIOFARAM, Università degli Studi di Messina, V.le F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Sofia Gama
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 1397), 2695-066 Bobadela LRS, Portugal
| | - Demetrio Milea
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, CHIBIOFARAM, Università degli Studi di Messina, V.le F. Stagno d'Alcontres, 31, 98166 Messina, Italy
| | - Zuzana Vargová
- Institute of Chemistry, Pavol Jozef Šafarik University, Moyzesova 11, 041 54 Košice, Slovakia.
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Víglaš J, Olejníková P. Antifungal azoles trigger a xenobiotic detoxification pathway and chitin synthesis in Neurospora crassa. Res Microbiol 2023:104055. [PMID: 36963554 DOI: 10.1016/j.resmic.2023.104055] [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] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 02/15/2023] [Accepted: 03/15/2023] [Indexed: 03/26/2023]
Abstract
The presence of antifungal drugs is prompting the fungal microorganisms to react by mechanisms broader than the resistance. The fungi evolved mechanisms, by which they respond to various stress conditions, including the presence of antifungal compounds. In this work, we studied the response of model filamentous fungus Neurospora crassa to azole antifungals in the broader context of the adaptation mechanisms. We demonstrated the increase in expression of filamentous fungi-specific genes encoding cytochrome enzymes of CYP65 clan and plasma membrane-localized ABCC transporters. Azoles appear not to conjugate with glutathione. Surprisingly, the azoles caused changes in the hyphae organization and the amount of chitin in cell wall by the same manner that was thought to be echinocandin-specific. The response to individual azoles appeared to be influenced by the structure of azole compound (prochloraz - main outlier). Taken together, these findings demonstrate the importance of study of stress response mechanisms, specifically in filamentous fungi. Many aspects of the reaction within azoles seem to be similar, though specificities are occurring.
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Affiliation(s)
- Ján Víglaš
- Institute of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovakia.
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Malatinský T, Valachová D, Pinčeková L, Scherhaufer D, Olejníková P, Májeková M, Vargová J, Gaálová-Radochová B, Bujdáková H, Nováčiková J, Farley AJM, Berkeš D, Jakubec P, Kolarovič A, Caletková O. Synthesis and structure-activity relationship of berkeleylactone A-derived antibiotics. Org Biomol Chem 2022; 20:7821-7832. [PMID: 36169622 DOI: 10.1039/d2ob01452a] [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: 11/21/2022]
Abstract
Berkeleylactone A is a potent 16-membered macrolactone antibiotic, recently isolated from a coculture of Berkeley Pit Lake fungi. Although its antimicrobial activity has already been investigated, little is known about the structure-activity relationship. Based on our previous synthetic studies, a series of berkeleylactone A derivatives were synthesized and evaluated for their in vitro antimicrobial activities against methicillin-sensitive and methicillin-resistant Staphylococcus aureus (MRSA) strains. Our data confirmed the essential role of the embedded conjugated system and suggest a reversible sulfa-protection of the Michael acceptor as a viable option. Structurally simplified achiral macrolactam 8 showed the best inhibitory activity against S. aureus L12 (MRSA) with MIC50 values of 0.39 μg mL-1, 8-fold lower than those of berkeleylactone A. These studies may be of value in the development of more advanced candidates for antibiotic applications.
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Affiliation(s)
- Tomáš Malatinský
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Dominika Valachová
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Lucia Pinčeková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - David Scherhaufer
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Magdaléna Májeková
- Institute of Experimental Pharmacology & Toxicology, Centre of Experimental Medicine SAS, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Jarmila Vargová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Barbora Gaálová-Radochová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Helena Bujdáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Jana Nováčiková
- Central Laboratories, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Alistair J M Farley
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
| | - Dušan Berkeš
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Pavol Jakubec
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Andrej Kolarovič
- Department of Chemistry, Faculty of Education, Trnava University, Priemyselná 4, 918 43 Trnava, Slovakia
| | - Oľga Caletková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia.
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Krahulcová M, Cverenkárová K, Olejníková P, Micajová B, Koreneková J, Bírošová L. Characterization of Antibiotic Resistant Coliform Bacteria and Resistance Genes Isolated from Samples of Smoothie Drinks and Raw Milk. Foods 2022; 11:foods11091324. [PMID: 35564047 PMCID: PMC9101137 DOI: 10.3390/foods11091324] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/18/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022] Open
Abstract
Raw foodstuffs have been marked as a healthier alternative in the context of nutrient content and are becoming more popular with consumers. Thermally untreated foods may represent a microbiological risk connected with the possible presence of antimicrobial resistance. The aim of this study was to prove that popular raw food beverages such as smoothies and raw milk may be a source of antibiotic-resistant coliform bacteria and resistant genes. The majority of antibiotic-resistant isolates (110) were identified as Enterobacter spp., Escherichia coli, and species of Klebsiella spp., predominantly β-lactam and chloramphenicol resistant. Multidrug resistance has been registered in one-third of resistants. Overproduction of efflux pumps was clarified in 8 different bacteria. The majority of resistant isolates were strong biofilm producers. Antibiotic resistance gene blaOXA was detected in 25% of isolates, especially in E. coli. Resistance genes blaTEM and blaSHV were detected in 19% and 14%, respectively. This is the first study to point out that popular raw drinks such as smoothies or raw milk, besides their nutrient benefits, could represent a reservoir of antibiotic-resistant bacteria as well as antibiotic resistance genes. According to this, raw drinks could contribute to the dissemination of antibiotic resistance in the human gastrointestinal tract and environment.
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Affiliation(s)
- Monika Krahulcová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (K.C.); (B.M.); (J.K.); (L.B.)
- Correspondence: ; Tel.: +421-948-511-256
| | - Klára Cverenkárová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (K.C.); (B.M.); (J.K.); (L.B.)
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia;
| | - Barbora Micajová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (K.C.); (B.M.); (J.K.); (L.B.)
| | - Júlia Koreneková
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (K.C.); (B.M.); (J.K.); (L.B.)
| | - Lucia Bírošová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (K.C.); (B.M.); (J.K.); (L.B.)
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Víglaš J, Dobiasová S, Viktorová J, Ruml T, Repiská V, Olejníková P, Gbelcová H. Peptaibol-Containing Extracts of Trichoderma atroviride and the Fight against Resistant Microorganisms and Cancer Cells. Molecules 2021; 26:molecules26196025. [PMID: 34641569 PMCID: PMC8512731 DOI: 10.3390/molecules26196025] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/26/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
Fighting resistance to antibiotics and chemotherapeutics has brought bioactive peptides to the fore. Peptaibols are short α-aminoisobutyric acid-containing peptides produced by Trichoderma species. Here, we studied the production of peptaibols by Trichoderma atroviride O1 and evaluated their antibacterial and anticancer activity against drug-sensitive and multidrug-resistant bacterium and cancer cell lines. This was substantiated by an analysis of the activity of the peptaibol synthetase-encoding gene. Atroviridins, 20-residue peptaibols were detected using MALDI-TOF mass spectrometry. Gram-positive bacteria were susceptible to peptaibol-containing extracts of T. atroviride O1. A synergic effect of extract constituents was possible, and the biolo-gical activity of extracts was pronounced in/after the peak of peptaibol synthetase activity. The growth of methicillin-resistant Staphylococcus aureus was reduced to just under 10% compared to the control. The effect of peptaibol-containing extracts was strongly modulated by the lipoteichoic acid and only slightly by the horse blood serum present in the cultivation medium. Peptaibol-containing extracts affected the proliferation of human breast cancer and human ovarian cancer cell lines in a 2D model, including the multidrug-resistant sublines. The peptaibols influenced the size and compactness of the cell lines in a 3D model. Our findings indicate the molecular basis of peptaibol production in T. atroviride O1 and the potential of its peptaibol-containing extracts as antimicrobial/anticancer agents.
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Affiliation(s)
- Ján Víglaš
- Institute of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia;
- Correspondence:
| | - Simona Dobiasová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.D.); (J.V.); (T.R.)
| | - Jitka Viktorová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.D.); (J.V.); (T.R.)
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.D.); (J.V.); (T.R.)
| | - Vanda Repiská
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, 813 72 Bratislava, Slovakia; (V.R.); (H.G.)
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, 812 37 Bratislava, Slovakia;
| | - Helena Gbelcová
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, 813 72 Bratislava, Slovakia; (V.R.); (H.G.)
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Krahulcová M, Micajová B, Olejníková P, Cverenkárová K, Bírošová L. Microbial Safety of Smoothie Drinks from Fresh Bars Collected in Slovakia. Foods 2021; 10:551. [PMID: 33799940 PMCID: PMC8000542 DOI: 10.3390/foods10030551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/28/2021] [Accepted: 03/04/2021] [Indexed: 02/06/2023] Open
Abstract
Among the many consumers in Slovakia, smoothies are nowadays gaining popularity. Smoothie drinks are prepared from raw fruits and vegetables. Therefore, their microbiological safety depends on hygiene standards. The aim of this work was to monitor and quantify selected sensitive and antibiotic-resistant microorganisms present in collected smoothies. Twenty analyzed smoothie samples were collected from six food service establishments (fresh bars) in the capital city of Slovakia, Bratislava. Antibiotic-resistant bacteria were found in at least one of each fresh bar. Antibiotic-resistant coliform bacteria prevailed, especially in green smoothies or juices containing more vegetable ingredients. Resistance to ampicillin, ciprofloxacin, tetracycline, chloramphenicol, and gentamicin was observed in the case of coliform bacteria. More than half of the smoothie drink samples did not contain resistant enterococci. On the other hand, vancomycin-resistant enterococci were detected in 20% of samples. The most frequently isolated antibiotic-resistant strains belonged to the Enterobacter spp. or Klebsiella spp. genus. In the last part of the work, the pretreatment effect of smoothie components on the selected microorganisms' counts in the final product was investigated. Washing ingredients with an aqueous solution of a biocide agent containing silver and hydrogen peroxide proved to be the most effective way to decrease bacterial counts.
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Affiliation(s)
- Monika Krahulcová
- Faculty of Chemical and Food Technology, Department of Nutrition and Food Quality Assessment, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (B.M.); (K.C.); (L.B.)
| | - Barbora Micajová
- Faculty of Chemical and Food Technology, Department of Nutrition and Food Quality Assessment, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (B.M.); (K.C.); (L.B.)
| | - Petra Olejníková
- Faculty of Chemical and Food Technology, Institute of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia;
| | - Klára Cverenkárová
- Faculty of Chemical and Food Technology, Department of Nutrition and Food Quality Assessment, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (B.M.); (K.C.); (L.B.)
| | - Lucia Bírošová
- Faculty of Chemical and Food Technology, Department of Nutrition and Food Quality Assessment, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia; (B.M.); (K.C.); (L.B.)
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Víglaš J, Olejníková P. An update on ABC transporters of filamentous fungi - from physiological substrates to xenobiotics. Microbiol Res 2021; 246:126684. [PMID: 33529790 DOI: 10.1016/j.micres.2020.126684] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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: 10/29/2020] [Revised: 12/13/2020] [Accepted: 12/18/2020] [Indexed: 02/02/2023]
Abstract
The superfamily of ATP-binding cassette (ABC) transporters is a large family of proteins with a wide substrate repertoire and range of functions. The main role of these proteins is in the transportation of different molecules across biological membranes. Due to the broad range of substrates, ABC transporters can transport not only natural metabolites but also various xenobiotics, including antifungal compounds, which makes some ABC transporters key players in antifungal resistance. Alternatively, ABC proteins without transport function seem to be essential for fungal cell viability. In this work, we review the individual subfamilies of ABC transporters in filamentous fungi regarding physiological substrates, clinical and agricultural significance. Subfamilies are defined using well-studied transporters in yeast, which may help to clarify their role in filamentous fungi.
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Affiliation(s)
- Ján Víglaš
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237, Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237, Bratislava, Slovakia.
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10
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Víglaš J, Olejníková P. Signalling mechanisms involved in stress response to antifungal drugs. Res Microbiol 2020; 172:103786. [PMID: 33038529 DOI: 10.1016/j.resmic.2020.10.001] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/24/2020] [Accepted: 10/01/2020] [Indexed: 01/28/2023]
Abstract
The emergence of antifungal resistance is a serious threat in the treatment of mycoses. The primary susceptible fungal cells may evolve a resistance after longer exposure to antifungal agents. The exposure itself causes stress condition, to which the fungus needs to adapt. This review provides detailed description of evolutionary conserved molecular mechanisms contributing to the adaptation response to stress caused by antifungal agents as well as their interconnection. The knowledge may help us to find new ways to delay the emergence of drug resistance as the same mechanisms are used regardless of what antifungal compound causes stress.
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Affiliation(s)
- Ján Víglaš
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237, Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237, Bratislava, Slovakia.
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11
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Kubíčková J, Elefantová K, Pavlikova L, Cagala M, Šereš M, Šafář P, Marchalín Š, Ďurišová K, Boháčová V, Sulova Z, Lakatoš B, Breier A, Olejníková P. Screening of Phenanthroquinolizidine Alkaloid Derivatives for Inducing Cell Death of L1210 Leukemia Cells with Negative and Positive P-glycoprotein Expression. Molecules 2019; 24:E2127. [PMID: 31195716 PMCID: PMC6600356 DOI: 10.3390/molecules24112127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 01/08/2023] Open
Abstract
We describe the screening of a set of cryptopleurine derivatives, namely thienoquinolizidine derivatives and (epi-)benzo analogs with bioactive phenanthroquinolizidine alkaloids that induce cytotoxic effects in the mouse lymphocytic leukemia cell line L1210. We used three variants of L1210 cells: i) parental cells (S) negative for P-glycoprotein (P-gp) expression; ii) P-glycoprotein positive cells (R), obtained by selection with vincristine; iii) P-glycoprotein positive cells (T), obtained by stable transfection with a human gene encoding P-glycoprotein. We identified the most effective derivative 11 with a median lethal concentration of ≈13 μM in all three L1210 cell variants. The analysis of the apoptosis/necrosis induced by derivative 11 revealed that cell death was the result of apoptosis with late apoptosis characteristics. Derivative 11 did not induce a strong alteration in the proportion of cells in the G1, S or G2/M phase of the cell cycle, but a strong increase in the number of S, R and T cells in the subG1 phase was detected. These findings indicated that we identified the most effective inducer of cell death, derivative 11, and this derivative effectively induced cell death in S, R and T cells at similar inhibitory concentrations independent of P-gp expression.
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Affiliation(s)
- Jana Kubíčková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Katarína Elefantová
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Lucia Pavlikova
- Institute of Molecular Physiology and Genetics, Centre of Bioscience, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia.
| | - Martin Cagala
- Institute of Molecular Physiology and Genetics, Centre of Bioscience, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia.
| | - Mário Šereš
- Institute of Molecular Physiology and Genetics, Centre of Bioscience, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia.
| | - Peter Šafář
- Institute of Organic chemistry, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Štefan Marchalín
- Institute of Organic chemistry, Faculty of Food and Chemical Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Kamila Ďurišová
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Viera Boháčová
- Institute of Molecular Physiology and Genetics, Centre of Bioscience, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia.
| | - Zdena Sulova
- Institute of Molecular Physiology and Genetics, Centre of Bioscience, Slovak Academy of Sciences, Dubravska Cesta 9, 840 05 Bratislava, Slovakia.
| | - Boris Lakatoš
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Albert Breier
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia.
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12
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Lépesová K, Olejníková P, Mackuľak T, Tichý J, Birošová L. Annual changes in the occurrence of antibiotic-resistant coliform bacteria and enterococci in municipal wastewater. Environ Sci Pollut Res Int 2019; 26:18470-18483. [PMID: 31049859 DOI: 10.1007/s11356-019-05240-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 02/26/2019] [Revised: 04/15/2019] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
Wastewater contains subinhibitory concentrations of different micropollutants such as antibiotics that create selective pressure on bacteria. This phenomenon is also caused by insufficient wastewater treatment technology leading to the development and spread of antibiotic-resistant bacteria and resistance genes into the environment. Therefore, this work focused on monitoring of antibiotic-resistant coliform bacteria and enterococci in influent and effluent wastewaters taken from the second biggest wastewater treatment plant (Petržalka) in the capital of Slovakia during 1 year. Antibiotic-resistant strains were isolated, identified, and characterized in terms of susceptibility and biofilm production. All of 27 antibiotic-resistant isolates were identified mainly as Morganella morganii, Citrobacter spp., and E. coli. Multidrug-resistance was detected in 58% of isolated strains. All tested isolates could form biofilm; two strains were very strong producers, and 74% formed biofilm by strong intensity. The flow rate of the influent wastewater had a more significant impact on the number of studied bacteria than the temperature. Graphical abstract.
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Affiliation(s)
- Kristína Lépesová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia.
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Tomáš Mackuľak
- Department of Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Jozef Tichý
- Department of Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Lucia Birošová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
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13
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Ferko B, Zeman M, Formica M, Veselý S, Doháňošová J, Moncol J, Olejníková P, Berkeš D, Jakubec P, Dixon DJ, Caletková O. Total Synthesis of Berkeleylactone A. J Org Chem 2019; 84:7159-7165. [DOI: 10.1021/acs.joc.9b00850] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Branislav Ferko
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford OX1 3TA, U.K
| | - Marián Zeman
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Michele Formica
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford OX1 3TA, U.K
| | - Sebastián Veselý
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Jana Doháňošová
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Ján Moncol
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Petra Olejníková
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Dušan Berkeš
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Pavol Jakubec
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Darren J. Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford OX1 3TA, U.K
| | - Ol’ga Caletková
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
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14
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Lépesová K, Kraková L, Pangallo D, Medveďová A, Olejníková P, Mackuľak T, Tichý J, Grabic R, Birošová L. Prevalence of antibiotic-resistant coliform bacteria, Enterococcus spp. and Staphylococcus spp. in wastewater sewerage biofilm. J Glob Antimicrob Resist 2018; 14:145-151. [DOI: 10.1016/j.jgar.2018.03.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 03/19/2018] [Accepted: 03/21/2018] [Indexed: 11/28/2022] Open
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15
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Pagáč T, Šafář P, Marchalín Š, Ježíková Z, Balónová B, Šupolíková M, Nováková E, Kubíčková J, Šoral M, Sivý J, Olejníková P. Asymmetric synthesis and study of biological activity of (epi-)benzoanalogues of bioactive phenanthroquinolizidine alkaloids. Monatsh Chem 2018. [DOI: 10.1007/s00706-018-2244-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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16
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Poprac P, Poliak P, Kavala M, Barbieriková Z, Zalibera M, Fronc M, Švorc Ľ, Vihonská Z, Olejníková P, Lušpai K, Lukeš V, Brezová V, Szolcsányi P. Polyradical PROXYL/TEMPO-Derived Amides: Synthesis, Physicochemical Studies, DFT Calculations, and Antimicrobial Activity. Chempluschem 2017; 82:1326-1340. [PMID: 31957189 DOI: 10.1002/cplu.201700343] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/18/2017] [Indexed: 01/09/2023]
Abstract
A series of polynitroxide amides possessing 2,2,5,5-tetramethyl-1-pyrrolidinyloxy (PROXYL) and/or 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) units connected through various bridges were synthesized and their properties were analyzed. EPR spectroscopy provided detailed insight into their paramagnetic character and related properties. A thorough examination of the EPR spectra of dinitroxides in organic solvents provided valuable information on the intramolecular motions, thermodynamics, and spin-exchange mechanisms. Analysis of low-temperature X- and Q-band EPR spectra of the dissolved dinitroxides provided spin-spin distances that were comparable with the theoretical values obtained by DFT. Cyclic voltammetry investigations revealed (quasi)reversible electrochemical behavior for PROXYL-derived biradicals, whereas significant loss of the reversibility was found for TEMPO-containing bi- and polyradicals. The inhibitory activities of the nitroxides against model bacteria, yeasts, and filamentous fungi were assessed.
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Affiliation(s)
- Patrik Poprac
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Peter Poliak
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Miroslav Kavala
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Zuzana Barbieriková
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Michal Zalibera
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Marek Fronc
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Ľubomír Švorc
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Zuzana Vihonská
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Petra Olejníková
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Karol Lušpai
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Vladimír Lukeš
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Vlasta Brezová
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Peter Szolcsányi
- Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
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17
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Ježíková Z, Pagáč T, Pfeiferová B, Bujdáková H, Dižová S, Jančíková I, Gášková D, Olejníková P. Synergy between azoles and 1,4-dihydropyridine derivative as an option to control fungal infections. Antonie Van Leeuwenhoek 2017; 110:1219-1226. [PMID: 28593476 DOI: 10.1007/s10482-017-0895-6] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 05/29/2017] [Indexed: 12/22/2022]
Abstract
With emerging fungal infections and developing resistance, there is a need for understanding the mechanisms of resistance as well as its clinical impact while planning the treatment strategies. Several approaches could be taken to overcome the problems arising from the management of fungal diseases. Besides the discovery of novel effective agents, one realistic alternative is to enhance the activity of existing agents. This strategy could be achieved by combining existing antifungal agents with other bioactive substances with known activity profiles (combination therapy). Azole antifungals are the most frequently used class of substances used to treat fungal infections. Fluconazole is often the first choice for antifungal treatment. The aim of this work was to study potential synergy between azoles and 1,4-dihydropyridine-2,3,5-tricarboxylate (termed derivative H) in order to control fungal infections. This article points out the synergy between azoles and newly synthesized derivative H in order to fight fungal infections. Experiments confirmed the role of derivative H as substrate/inhibitor of fungal transporter Cdr1p relating to increased sensitivity to fluconazole. These findings, plus decreased expression of ERG11, are responsible for the synergistic effect.
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Affiliation(s)
- Zuzana Ježíková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37, Bratislava, Slovakia.
| | - Tomáš Pagáč
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Barbora Pfeiferová
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Helena Bujdáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava 4, Slovakia
| | - Stanislava Dižová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava 4, Slovakia
| | - Iva Jančíková
- Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16, Praha 2, Czech Republic
| | - Dana Gášková
- Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16, Praha 2, Czech Republic
| | - Petra Olejníková
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37, Bratislava, Slovakia
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18
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Olejníková P, Kaszonyi A, Šimkovič M, Lakatoš B, Kaliňák M, Valachovičová M, Birošová L. Differences in gut microbiota activity (antimicrobials, potential mutagens, and sterols) according to diet. Acta Alimentaria 2017. [DOI: 10.1556/066.2017.46.1.8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Zelená V, Birošová L, Olejníková P, Polák M, Lakatoš B, Varečka Ľ. Properties of anaerobic fungi isolated from several habitats: complexity of phenotypes. Gen Physiol Biophys 2015; 35:95-107. [PMID: 26612922 DOI: 10.4149/gpb_2015036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/13/2015] [Indexed: 11/08/2022]
Abstract
Isolates of anaerobic fungi from rumen, animal faeces and compost displayed morphological similarity with known anaerobic fungi. According to their ITS sequences, species were related to Neocallimastix and Piromyces. Rumen fungi tolerated exposure to an aerobic atmosphere for at least four days. Under anaerobic conditions, they could grow on both, defined or complex substrates. Growth in liquid media was monitored by the continuous measurement of metabolic gases (O2, CO2, H2, CO, H2S, CH4). Monitored metabolism was complex, showed that both CO2 and H2 were produced and subsequently consumed by yet unknown metabolic pathway(s). CO and H2S were evolved similarly, but not identically with the generation of CO2 and H2 suggesting their connection with energetic metabolism. Anaerobic fungi from snail faeces and compost produced concentrations of H2S, H2, CO near the lower limit of detection. The rumen isolates produced cellulases and xylanases with similar pH and temperature optima. Proteolytic enzymes were secreted as well. Activities of some enzymes of the main catabolic pathways were found in cell-free homogenates of mycelia. The results indicate the presence of the pentose cycle, the glyoxylate cycle and an incomplete citrate cycle in these fungi. Differences between isolates indicate phenotypic variability between anaerobic fungi.
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Affiliation(s)
- Viera Zelená
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 811 02 Bratislava, Slovak Republic.
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20
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Šimkovič M, Olejníková P, Mat'at'a M, Žemla P, Vilimová V, Farkašová L, Varečka L. Nutrient transport into germinating Trichoderma atroviride conidia and development of its driving force. Microbiology (Reading) 2015; 161:1240-50. [PMID: 25777081 DOI: 10.1099/mic.0.000079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The exit from dormancy and the start of growth should be preceded or at least accompanied by the uptake of nutrients. In this work we studied changes in the transport of several nutrients into Trichoderma atroviride conidia. Germination started with a short period of isodiametric growth (conidial swelling), followed by polarized growth (germ tube formation) after about 8 h at 26 °C. The onset of isodiametric growth required the presence of external both phosphate and nitrate. At the same time, an increased uptake of precursors of macromolecules and phospholipids ((14)C- or (3)H-labelled valine, uracil, N-acetylglucosamine and choline) occurred. A low uptake of these precursors was observed also in non-germinating conidia. Concomitantly, this uptake developed an increased sensitivity to the uncoupler 3,3',4',5-tetrachlorosalicylanilide. Expression and activity of H(+)-ATPase started after completing isodiametric growth, suggesting that the proton-motive force (PMF) generated by H(+)-ATPase may be an accelerator of nutrient uptake and metabolism. (14)C-valine uptake was also measured into a mutant with disrupted pma1 gene. This mutant did not form conidia. The mutant also exhibited uncoupler sensitivity of (14)C-valine uptake. These observations showed that a PMF must have been generated by a mechanism(s) other than the H(+)-ATPase activity in the WT before H(+)-ATPase expression and in mycelia with disrupted H(+)-ATPase.
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Affiliation(s)
- Martin Šimkovič
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - Petra Olejníková
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - Matej Mat'at'a
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - Peter Žemla
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - Viera Vilimová
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - Lenka Farkašová
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
| | - L'udovít Varečka
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237-Bratislava, Slovakia
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21
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Olejníková P, Birošová L, Švorc Ľ, Vihonská Z, Fiedlerová M, Marchalín Š, Šafář P. Newly synthesized indolizine derivatives – antimicrobial and antimutagenic properties. Chemical Papers 2015. [DOI: 10.1515/chempap-2015-0093] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractA series of indolizine derivatives have been synthesized and subjected to antibacterial screening studies. Antibacterial activity of 21 derivatives was investigated against Staphylococcus aureus, Mycobacterium smegmatis, Salmonella typhimurium and Escherichia coli; also, the sensitivity of model yeast Candida parapsilosis and some model filamentous fungi Aspergillus fumigatus, Alternaria alternata, Botrytis cinerea and Microsporum gypseum was tested. Newly synthesized indolizine derivatives have shown selective toxicity to Gram-positive bacteria S. aureus and were also considered to be able to inhibit the acidoresistant rod M. smegmatis. Derivative XXI has shown the highest inhibition effect with the bacteriostatic effect on the cells at the concentration of 25 μg mL
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22
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Kavala M, Brezová V, Švorc L, Vihonská Z, Olejníková P, Moncol J, Kožíšek J, Herich P, Szolcsányi P. Synthesis, physicochemical properties and antimicrobial activity of mono-/dinitroxyl amides. Org Biomol Chem 2014; 12:4491-502. [PMID: 24849262 DOI: 10.1039/c4ob00302k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Two comparative sets of mono-/dinitroxyl amides were designed and prepared. The novel TEMPO and/or PROXYL derivatives were fully characterised and their spin, redox and antimicrobial properties were determined. Cyclic voltammetry revealed (quasi)reversible redox behavior for most of the studied radicals. Moreover, the electron-withdrawing substituents increased the oxidation potential of nitroxides in comparison to electron-donating groups. While EPR spectra of monoradicals featured the typical three-line signal, the spectra of biradicals showed more complex splitting patterns. The in vitro biological assay revealed that unlike pyrrolidinyl derivatives, the piperidinyl nitroxides significantly inhibited the growth of Staphylococcus sp.
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Affiliation(s)
- Miroslav Kavala
- Department of Organic Chemistry, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37 Bratislava, Slovakia.
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Olejníková P, Švorc L, Olšovská D, Panáková A, Vihonská Z, Kovaryová K, Marchalín Š. Antimicrobial activity of novel c2-substituted 1,4-dihydropyridine analogues. Sci Pharm 2014; 82:221-32. [PMID: 24959401 PMCID: PMC4065119 DOI: 10.3797/scipharm.1311-04] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 11/04/2013] [Accepted: 01/12/2014] [Indexed: 12/02/2022] Open
Abstract
The antimicrobial activity of 3-methyl-5-isopropyl (or ethyl) 6-methyl-4-nitrophenyl-1,4-dihydropyridine-3,5-dicarboxylate derivatives was evaluated. Prokaryotes (bacteria) appeared to be more sensitive to their antimicrobial activity than were eukaryotes (filamentous fungi). The best antibacterial activity was shown by derivative 33, which was able to inhibit the growth of Mycobacterium smegmatis (MIC33 = 9 μg.ml(-1)), Staphylococcus aureus (MIC33 = 25 μg.ml(-1)), and Escherichia coli (MIC33 = 100 μg.ml(-1)). In addition, derivative 4 demonstrated its antibacterial power on the acid-fast bacterial species M. smegmatis and on Gram-positive S. aureus. Focusing on the structure-activity relationship, it appears that the increase in the substituent bulk at the C2 position improved the antibacterial activity of the set of compounds studied. Derivatives 33 and 4, carrying 2-cyano-3-oxo-3-phenylprop-1-en-1-yl and allyliminomethyl groups, respectively, showed significantly higher inhibition activities on all tested microorganisms in comparison with the rest of the derivatives. This enhancement was also in good correlation with different log P values (lipophilicity parameter).
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Affiliation(s)
- Petra Olejníková
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - L’ubomír Švorc
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Denisa Olšovská
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Anna Panáková
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Zuzana Vihonská
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Katarína Kovaryová
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Štefan Marchalín
- Department of Organic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
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24
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Abstract
In this work, we assayed the ability of newly prepared indolizine derivates (epimers) 6C and 6A to inhibit the growth of Mycobacterium smegmatis and used them for resistance induction. 6A inhibited the growth of M. smegmatis at a concentration of 100 μg/mL. No inhibitory effect was observed in the presence of 6C. By incubating the bacteria with 6C and 6A, colonies resistant to 6A were observed. Finally, 37 stable resistant strains were isolated. These resistant strains were able to grow on a 5-fold higher concentration of 6A (500 μg/mL) than the minimal inhibitory concentration of the wild type (100 μg/mL), with no growth inhibition. Resistant strains were then tested for cross-resistance to other antibiotics: ampicillin, tetracycline, ciprofloxacin, chloramphenicol, gentamicin, and streptomycin. Determinations of resistance patterns to 6 antibiotics revealed 36 strains that were resistant to at least one drug.
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Affiliation(s)
- Petra Olejníková
- Department of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Martina Kurucová
- Department of Biochemistry and Microbiology, Faculty of Food and Chemical Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - L’ubomír Švorc
- Institute of Analytical Chemistry, Faculty of Food and Chemical Technology, Slovak University of Technology, Bratislava, Slovak Republic
| | - Štefan Marchalín
- Department of Organic Chemistry, Faculty of Food and Chemical Technology, Slovak University of Technology, Bratislava, Slovak Republic
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25
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Olejníková P, Hudecová D, Burgstaller W, Kryštofová S, Varečka L. Transient excretion of succinate from Trichoderma atroviride submerged mycelia reveals the complex movements and metabolism of carboxylates. Antonie van Leeuwenhoek 2011; 100:55-66. [PMID: 21337029 DOI: 10.1007/s10482-011-9564-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 02/05/2011] [Indexed: 10/18/2022]
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26
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Olejníková P, Ondrusová Z, Krystofová S, Hudecová D. Benomyl-resistant mutant strain of Trichoderma sp. with increased mycoparasitic activity. Folia Microbiol (Praha) 2010; 55:102-4. [PMID: 20336512 DOI: 10.1007/s12223-010-0016-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 02/11/2010] [Indexed: 11/26/2022]
Abstract
Application of UV radiation to the strain Trichoderma sp. T-bt (isolated from lignite) resulted in the T-brm mutant which was resistant to the systemic fungicide benomyl. The tub2 gene sequence in the T-brm mutant differed from the parent as well as the collection strain (replacing tyrosine with histidine in the TUB2 protein). Under in vitro conditions this mutant exhibited a higher mycoparasitic activity toward phytopathogenic fungi.
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Affiliation(s)
- P Olejníková
- Department of Biochemistry and Microbiology, Slovak University of Technology, 81237 Bratislava, Slovakia.
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27
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Valent A, KohútovÁ M, ŠvajlenovÁ O, Hudecová D, Olejníková P, Melník M. N-salicylidene- L -glutamatocopper(II) complexes and their antimicrobial effects. J COORD CHEM 2006. [DOI: 10.1080/0095897042000273103] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- A. Valent
- a Department of Chemical Theory of Drugs , Faculty of Pharmacy, Comenius University , 832 32 Bratislava, Slovakia
| | - M. KohútovÁ
- a Department of Chemical Theory of Drugs , Faculty of Pharmacy, Comenius University , 832 32 Bratislava, Slovakia
| | - O. ŠvajlenovÁ
- a Department of Chemical Theory of Drugs , Faculty of Pharmacy, Comenius University , 832 32 Bratislava, Slovakia
| | - D. Hudecová
- b Department of Biochemistry and Microbiology , Slovak Technical University , 812 37 Bratislava, Slovakia
| | - P. Olejníková
- b Department of Biochemistry and Microbiology , Slovak Technical University , 812 37 Bratislava, Slovakia
| | - M. Melník
- c Department of Inorganic Chemistry , Faculty of Chemical and Food Technology, Slovak Technical University , 812 37 Bratislava, Slovakia
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28
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Pokorný R, Olejníková P, Balog M, Zifcák P, Hölker U, Janssen M, Bend J, Höfer M, Holiencin R, Hudecová D, Varecka L. Characterization of microorganisms isolated from lignite excavated from the Záhorie coal mine (southwestern Slovakia). Res Microbiol 2005; 156:932-43. [PMID: 16085397 DOI: 10.1016/j.resmic.2005.04.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2004] [Revised: 04/26/2005] [Accepted: 04/27/2005] [Indexed: 11/29/2022]
Abstract
Microorganisms were isolated from lignite freshly excavated in the Záhorie coal mine (southwestern Slovakia) under conditions excluding contamination with either soil or air-borne microorganisms. The isolates represented both Prokarya and Eukarya (fungi). All were able to grow on standard media, although some microorganisms were unstable and became extinct during storage of coal samples. Bacteria belonged to the genera Bacillus, Staphylococcus, and Rhodococcus, according to both morphological criteria and ITS sequences. Several bacterial isolates were resistant to antibiotics. The presence of anaerobic bacteria was also documented, although they have not yet been identified. Fungal isolates were typified by using their ITS sequences. They belonged to the genera Trichoderma (Hypocrea), Penicillium, Epicoccum, Metarhizium (Cordyceps), and Cladosporium. Several fungi produced compounds with antibiotic action against standard bacterial strains. The evidence for the presence of microorganisms in native lignite was obtained by means of fluorescence microscopy, scanning electron microscopy, and electron microprobe analysis. Results demonstrated that microorganisms were able to survive in the low-rank coal over a long time period.
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MESH Headings
- Anti-Bacterial Agents/biosynthesis
- Anti-Bacterial Agents/pharmacology
- Antibiosis
- Bacillus/classification
- Bacillus/isolation & purification
- Bacteria/classification
- Bacteria/isolation & purification
- Bacteria, Anaerobic/isolation & purification
- Coal/microbiology
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- DNA, Ribosomal Spacer/chemistry
- DNA, Ribosomal Spacer/genetics
- Drug Resistance, Microbial
- Electron Probe Microanalysis
- Fungi/classification
- Fungi/isolation & purification
- Microscopy, Electron, Scanning
- Microscopy, Fluorescence
- Mining
- Molecular Sequence Data
- Rhodococcus/classification
- Rhodococcus/isolation & purification
- Sequence Analysis, DNA
- Slovakia
- Staphylococcus/classification
- Staphylococcus/isolation & purification
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Affiliation(s)
- Richard Pokorný
- Department of Biochemistry and Microbiology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
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