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Kwaśniewska-Sip P, Woźniak M, Jankowski W, Ratajczak I, Cofta G. Chemical Changes of Wood Treated with Caffeine. Materials 2021; 14:ma14030497. [PMID: 33494219 PMCID: PMC7864485 DOI: 10.3390/ma14030497] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/09/2021] [Accepted: 01/18/2021] [Indexed: 12/01/2022]
Abstract
Earlier studies have revealed that wood treated with caffeine was effectively protected against decay fungi and molds. However, there is a need to establish how the caffeine molecule behaves after wood impregnation and how it can protect wood. The objective of the research was to characterize the interaction between caffeine and Scots pine (Pinus sylvestris L.) wood as well as to assess the stability of the alkaloid molecule in lignocellulosic material. For this purpose, an elementary analyzer was used to assess the nitrogen concentration in the treated wood. The results showed that caffeine is easily removed from the wood structure through large amounts of water. The changes occurring in the wood structure after impregnation were evaluated with regard to the results obtained by Fourier transform infrared (FTIR) spectroscopy of two model mixtures with caffeine and cellulose or lignin for the purpose of conducting a comparison with the spectrum of impregnated and non-impregnated samples. The observed changes in FTIR spectra involve the intensity of the C=O(6) caffeine carbonyl group and signals from guaiacyl units. It might indicate favorable interactions between caffeine and lignin. Additionally, molecular simulation of the caffeine’s interaction with the guaiacyl β-O-4 lignin model compound characteristic for the lignin structure using computational studies was performed. Consequently, all analyses confirmed that caffeine may interact with the methylene group derived from the aromatic rings of the guaiacyl group of lignin. In summary, scanning electron microscope (SEM) observations suggest that caffeine was accumulated in the lignin-rich areas of the primary walls.
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Affiliation(s)
- Patrycja Kwaśniewska-Sip
- Institute of Wood Chemical Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland;
- Air Quality Investigation Department, Łukasiewicz Research Network–Wood Technology Institute, Winiarska 1, 60-654 Poznań, Poland
- Correspondence:
| | - Magdalena Woźniak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland; (M.W.); (I.R.)
| | - Wojciech Jankowski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;
| | - Izabela Ratajczak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland; (M.W.); (I.R.)
| | - Grzegorz Cofta
- Institute of Wood Chemical Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland;
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Kurek J, Kwaśniewska-Sip P, Myszkowski K, Pospieszny T, Cofta G, Murias M, Kurczab R, Śliwa P. 10-Methylthiocolchicine complexes with lithium, sodium, potassium, rubidium and cesium metal cations salts – Cytotoxic, semi-empirical and molecular modelling studies. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114791] [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: 10/23/2022]
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Woźniak M, Mrówczyńska L, Kwaśniewska-Sip P, Waśkiewicz A, Nowak P, Ratajczak I. Effect of the Solvent on Propolis Phenolic Profile and its Antifungal, Antioxidant, and In Vitro Cytoprotective Activity in Human Erythrocytes Under Oxidative Stress. Molecules 2020; 25:molecules25184266. [PMID: 32957629 PMCID: PMC7571116 DOI: 10.3390/molecules25184266] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 07/08/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 02/03/2023] Open
Abstract
Propolis is a natural bee product with various beneficial biological effects. The health-promoting properties of propolis depend on its chemical composition, particularly the presence of phenolic compounds. The aim of this study was to evaluate the relationship between extraction solvent (acetone 100%, ethanol 70% and 96%) and the antifungal, antioxidant, and cytoprotective activity of the extracts obtained from propolis. Concentrations of flavonoids and phenolic acids in the propolis extracts were determined using ultrahigh-performance liquid chromatography. The antioxidant potential of different extracts was assessed on the basis of 2,2-diphenyl-1-picrylhydrazyl (DPPH·) free-radical-scavenging activity, Fe3+-reducing power, and ferrous ion (Fe2+)-chelating activity assays. The ability of the extracts to protect human red blood cell membranes against free-radical-induced damage and their antifungal activity was also determined. The results showed that the concentration of flavonoids in the propolis extracts was dependent on the solvent used in the extraction process and pinocembrin, chrysin, galangin, and coumaric acid were the most abundant phenols. All extracts exhibited high antioxidant potential and significantly protected human erythrocytes against oxidative damage. On the other hand, the antifungal activity of the propolis extracts depended on the solvent used in extraction and the fungal strains tested. It needs to be stressed that, to the best of our knowledge, there is no study relating the effect of solvent used for extraction of Polish propolis to its phenolic profile, and its antifungal, antioxidant, and cytoprotective activity.
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Affiliation(s)
- Magdalena Woźniak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.W.); (A.W.)
| | - Lucyna Mrówczyńska
- Department of Cell Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61614 Poznań, Poland
- Correspondence: (L.M.); (I.R.)
| | - Patrycja Kwaśniewska-Sip
- Air Quality Investigation Department, Łukasiewicz Research Network–Wood Technology Institute, Winiarska 1, 60654 Poznań, Poland;
- Institute of Chemical Wood Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60637 Poznań, Poland
| | - Agnieszka Waśkiewicz
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.W.); (A.W.)
| | - Piotr Nowak
- Institute of Economic Sciences, Wrocław University, Uniwersytecka 22/26, 50145 Wrocław, Poland;
| | - Izabela Ratajczak
- Department of Chemistry, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 75, 60625 Poznań, Poland; (M.W.); (A.W.)
- Correspondence: (L.M.); (I.R.)
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Kurek J, Kwaśniewska-Sip P, Myszkowski K, Pospieszny T, Pietruś W, Cofta G, Barczyński P, Murias M. Alkaloid from Colchicum species in complexes with lithium, sodium, potassium and magnesium cations– spectroscopic characterization, semiempirical and theoretical calculation, fungicidal and cytotoxic activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kurek J, Kwaśniewska-Sip P, Myszkowski K, Cofta G, Barczyński P, Murias M, Kurczab R, Śliwa P, Przybylski P. Antifungal, anticancer, and docking studies of colchiceine complexes with monovalent metal cation salts. Chem Biol Drug Des 2019; 94:1930-1943. [PMID: 31260187 DOI: 10.1111/cbdd.13583] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/14/2018] [Revised: 05/29/2019] [Accepted: 06/17/2019] [Indexed: 01/22/2023]
Abstract
Complexes of colchiceine with monovalent cation perchlorates and iodides have been obtained and characterized by spectroscopic methods. DFT and spectroscopic studies reveal that the dihedral angle ω1-1a-12-12a , crucial for colchicine biological mechanism of action, that is, binding to tubulins depends on the diameter of the complexed metal cation. Biological tests indicated no antifungal properties of colchicine (it was active only toward A.pullulans), in contrast to its derivative-(colchiceine). Complexation of colchiceine with metal cations improved significantly the antifungal potency, even below MIC <1 μg/ml. The colchiceine complexes were more potent than colchiceine, and some of them were even more potent than the fungicidal standard IPBC. The highest potency of colchiceine complexes was noted against A. pullulans (MIC = 0.5 μg/ml). In contrast to the findings concerning antifungal potency, the anticancer studies showed complexes of colchicine more active (~IC50 = 2 nM) than those of colchiceine (~IC50 = 6 μM). MDA-MB-231 breast cancer cell lines and human lung fibroblasts CCD39Lu were also tested.
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Affiliation(s)
- Joanna Kurek
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Patrycja Kwaśniewska-Sip
- Wood Technology Institute, Environmental Protection and Wood Chemistry Department, Poznan, Poland
| | | | - Grzegorz Cofta
- Institute of Chemical Wood Technology, University of Life Science, Poznań, Poland
| | - Piotr Barczyński
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Marek Murias
- Department of Toxicology, Poznan University of Medical Sciences, Poznań, Poland
| | - Rafał Kurczab
- Department of Medicinal Chemistry, Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Paweł Śliwa
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Kraków, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
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Komasa A, Winkiel M, Kwaśniewska-Sip P, Cofta G. Synthesis, spectroscopic, theoretical and antifungal activity study of gemini 3-hydroxy- and 3-hydroxymethylpyridinium dibromides. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Kurek J, Kwaśniewska-Sip P, Myszkowski K, Cofta G, Murias M, Barczyński P, Jasiewicz B, Kurczab R. 7-Deacetyl-10-alkylthiocolchicine derivatives - new compounds with potent anticancer and fungicidal activity. Medchemcomm 2018; 9:1708-1714. [PMID: 30429975 PMCID: PMC6195099 DOI: 10.1039/c8md00352a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 08/14/2018] [Indexed: 11/21/2022]
Abstract
A series of new semi-synthetic 7-deacetyl-10-alkylthiocolchicne derivatives with ethyl, n-propyl, i-propyl and n-butyl substituents were synthesised and characterised by spectroscopic methods, elemental analysis, DFT calculations and molecular docking simulations. All the synthesized compounds have been tested for fungicidal and anticancer activities against SKOV-3, LoVo, MCF-7, MDA-MB-231 and the lung-derived fibroblast CCD39Lu. All the new colchicine derivatives exhibit significantly higher cytotoxicity towards the SKOV-3 tumour cell line than the natural product - colchicine. The most effective cytotoxic agents were 7-deacetyl-10-n-buthylthiocolchicine and 7-deacetyl-10-i-propylthiocolchicine. Among all the compounds tested, 7-deacetyl-10-n-buthylthiocolchicine exhibited the highest fungicidal activity. Molecular modeling indicated that several mutations found in the β-tubulin unit of the tested fungal strains are crucial for antifungal activity and selectivity of 7-deacetyl-10-n-buthylthiocolchicine. The obtained results may be useful for the development of selective colchicine derivatives as effective fungicidal and/or anticancer drugs.
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Affiliation(s)
- Joanna Kurek
- Faculty of Chemistry , Adam Mickiewicz University , Umultowska 89b , 61-614 Poznań , Poland . ; ;
| | - Patrycja Kwaśniewska-Sip
- Wood Technology Institute , Environmental Protection and Wood Chemistry Department , Winiarska 1 , 60-654 Poznan , Poland .
| | - Krzysztof Myszkowski
- Department of Toxicology , Poznan University of Medical Sciences , Dojazd 30 , 60-631 Poznań , Poland . ;
| | - Grzegorz Cofta
- Institute of Chemical Wood Technology , University of Life Science , Wojska Polskiego 38/42 , 60-037 Poznań , Poland .
| | - Marek Murias
- Department of Toxicology , Poznan University of Medical Sciences , Dojazd 30 , 60-631 Poznań , Poland . ;
| | - Piotr Barczyński
- Faculty of Chemistry , Adam Mickiewicz University , Umultowska 89b , 61-614 Poznań , Poland . ; ;
| | - Beata Jasiewicz
- Faculty of Chemistry , Adam Mickiewicz University , Umultowska 89b , 61-614 Poznań , Poland . ; ;
| | - Rafał Kurczab
- Department of Medicinal Chemistry , Institute of Pharmacology , Polish Academy of Sciences , Smętna 12 , 31-343 Kraków , Poland .
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