Abstract
As a result of the blooming, certain Cyanobacteria (i.e., Microcystis) produce toxins, at concentrations that could be toxic. In this study, a group of the early detection markers for toxic microalgae were selected and applied. Samples from three Bulgarian dams, used as a source of drinking water for the general population, were tested via real time PCR. To monitor the presence of bacterial DNA, specific primers were selected to demonstrate Cyanobactеria. Some Cyanobacteria produced anatoxin-α, which is neurotoxic. The possible neuroprotective effect of two saponins, isolated from Astragalus glycyphyllos L. and A. glycyphylloides DC., Fabaceae, in a model of cyanotoxin (anatoxin-α)-induced neurotoxicity on subcellular fractions (rat brain microsomes, mitochondria, synaptosomes) and at cellular (neuroblastoma cell line SH-SY5Y) level, were further investigated. For preliminary assessment of physicochemical properties, pharmacokinetics, and drug-likeness of the investigated compounds, an in silico approach was applied. Anatoxin-α did not exert neurotoxic effect in SH-SY5Y cell line. The data results showed that the saponin from A. glycyphyllos had more pronounced neuroprotective effect on subcellular fractions, compared with the saponin from A. glycyphylloides. These results were supported by the in silico data analysis, where A. glycyphyllos saponin had better physicochemical and pharmacokinetics profile than the saponin from A. glycyphylloides.
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Acknowledgements
Authors are grateful for the technical support from the whole team of “Genetically Modified Organisms” Department, National Center of Public Health and Analyses, Sofia, Bulgaria.
Funding
The study was carried out with the financial support of the Council of Medicinal Science at Medical University of Sofia, Contract no. D-145/2019, project no. 8321/22.11.2018.
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VI and MKB isolated rat brain mitochondria, microsomes, and synaptosomes and worked with them. DA and VT worked with SH-SY5Y. IV made the in silico analysis. VI and TG performed PCR experiment. AS and IK isolated saponins from Astragalus. MG critically revised the material and made the concept for it.
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Ilieva, V., Shkondrov, A., Aluani, D. et al. Early Detection of Toxic Cyanobacteria in Bulgarian Dam Water and In Vitro Evaluation of the Effect of Saponins From Astragalus glycyphyllos and A. glycyphylloides, in Cyanotoxin (Anatoxin-α)-Induced Neurotoxicity. Rev. Bras. Farmacogn. 30, 202–213 (2020). https://doi.org/10.1007/s43450-020-00050-4
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DOI: https://doi.org/10.1007/s43450-020-00050-4