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Todorova N, Rangelov M, Dincheva I, Badjakov I, Enchev V, Markova N. Potential of hydroxybenzoic acids from Graptopetalum paraguayense for inhibiting of herpes simplex virus DNA polymerase – metabolome profiling, molecular docking and quantum-chemical analysis. PHARMACIA 2022. [DOI: 10.3897/pharmacia.69.e79467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
According to our previous investigation the total methanol extract from Graptopetalum paraguayense E. Walther demonstrates a significant inhibitory effect on herpes simplex virus type 1 (HSV-1). To clarify what causes this inhibitory activity on HSV-1, a metabolic profile of the plant was performed. Three main fractions: non-polar substances, polar metabolites and phenolic compounds were obtained and gas chromatography–mass spectrometry (GC-MS) analysis was carried out. Since it is well known that phenolic compounds show a significant anti-herpes effect and that viral DNA polymerase (DNApol) appears to play a key role in HSV virus replication, we present a docking and quantum-chemical analysis of the binding of these compounds to viral DNApol amino acids. Fourteen different phenolic acids found by GC-MS analyses, were used in molecular docking simulations. According to the interaction energies of all fourteen ligands in the DNApol pockets based on docking results, density functional theory (DFT) calculations were performed on the five optimally interacting with the receptor acids. It was found that hydroxybenzoic acids from phenolic fraction of Graptopetalum paraguayense E. Walther show a good binding affinity to the amino acids from the active site of the HSV DNApol, but significantly lower than that of acyclovir. The mode of action on virus replication of acyclovir (by DNApol) is different from that of the plant phenolic acids one, probably.
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Extract of pre-germinated brown rice protects against cardiovascular dysfunction by reducing levels of inflammation and free radicals in a rat model of type II diabetes. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Zaharieva MM, Genova-Kalоu P, Dincheva I, Badjakov I, Krumova S, Enchev V, Najdenski H, Markova N. Anti-Herpes Simplex virus and antibacterial activities of Graptopetalum paraguayense E. Walther leaf extract: a pilot study. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1656108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Maya Margaritova Zaharieva
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Petia Genova-Kalоu
- National Reference Laboratory “Rickettsia and Tissue Cultures”, Department of Virology, National Centre of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Ivayla Dincheva
- Department “Plant Genetic Resourses”, Agrobioinstitute, Agricultural Academy, Sofia, Bulgaria
| | - Ilian Badjakov
- Department “Plant Genetic Resourses”, Agrobioinstitute, Agricultural Academy, Sofia, Bulgaria
| | - Stefka Krumova
- National Reference Laboratory “Rickettsia and Tissue Cultures”, Department of Virology, National Centre of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Venelin Enchev
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Hristo Najdenski
- Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Nadezhda Markova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
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