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Daskou, M.

Publications and source records attributed to Daskou, M..

2 recordsLinked to original sources

Introducing multifactorial electroculturomics: Alternating Current Electric Pulses, combined with mild thermal treatment, exhibit antimicrobial or stimulatory effects on bacterial pathogens and enteroviruses, implying prospects for targeted microbiomics applications

AIMSTo surrogate chemical and high-energy microbicidals, Electroceuticals may be used as a stand-alone or combined treatment under the guise of Electroculturomics. METHODS AND RESULTSUsing high and low settings of Intensity and Frequency of a medical-rated instrument (TENS) of alternating current the viability and propagation of seven pathogenic bacteria and one enterovirus of environmental and medical importance were tested in vitro, in order to establish the interaction of electroceuticals and mild pasteurization protocols and identify potential synergies and/or antagonism of these treatments. The combined regimen showed synergy, following the prerogatives of the Bioelectric Effect, and antagonism. High frequency (800Hz) rather than low (2 Hz) seems detrimental, while intensity (10 or 1 mA) seems almost inconsequential, while longer sessions enhance detrimental effects but short exposure may be beneficial. CONCLUSIONSNo single treatment seems optimal for all tested bacteria. High frequency can be effective against low titers of Enterovirus, but at higher titers, the effect may be reversed. Case-specific effects on microbial growth patterns seem to be the norm. SIGNIFICANCE AND IMPACT OF STUDYDiverse mechanisms of microbicidal or stimulatory activity are implied, allowing individualized uses and targeted applications in food and environmental safety, therapeutics and industrial bioprocessing.

microbiology↗

Mitoquinone mesylate targets SARS-CoV-2 and associated lung inflammation through host pathways

To date, there is no effective oral antiviral against SARS-CoV-2 that is also anti-inflammatory. Herein, we show that the mitochondrial antioxidant mitoquinone/mitoquinol mesylate (Mito-MES), a dietary supplement, has potent antiviral activity against SARS-CoV-2 and its variants of concern in vitro and in vivo. Mito-MES had nanomolar in vitro antiviral potency against the Beta and Delta SARS-CoV-2 variants as well as the murine hepatitis virus (MHV-A59). Mito-MES given in SARS-CoV-2 infected K18-hACE2 mice through oral gavage reduced viral titer by nearly 4 log units relative to the vehicle group. We found in vitro that the antiviral effect of Mito-MES is attributable to its hydrophobic dTPP+ moiety and its combined effects scavenging reactive oxygen species (ROS), activating Nrf2 and increasing the host defense proteins TOM70 and MX1. Mito-MES was efficacious reducing increase in cleaved caspase-3 and inflammation induced by SARS-CoV2 infection both in lung epithelial cells and a transgenic mouse model of COVID-19. Mito-MES reduced production of IL-6 by SARS-CoV-2 infected epithelial cells through its antioxidant properties (Nrf2 agonist, coenzyme Q10 moiety) and the dTPP moiety. Given established safety of Mito-MES in humans, our results suggest that Mito-MES may represent a rapidly applicable therapeutic strategy that can be added in the therapeutic arsenal against COVID-19. Its potential long-term use by humans as diet supplement could help control the SARS-CoV-2 pandemic, especially in the setting of rapidly emerging SARS-CoV-2 variants that may compromise vaccine efficacy. One-Sentence SummaryMitoquinone/mitoquinol mesylate has potent antiviral and anti-inflammatory activity in preclinical models of SARS-CoV-2 infection.

microbiology↗