id author title date pages extension mime words sentences flesch summary cache txt cord-309871-y17puao2 Scherrmann, JM. Intracellular ABCB1 as a Possible Mechanism to Explain the Synergistic Effect of Hydroxychloroquine-Azithromycin Combination in COVID-19 Therapy 2020-06-12 .txt text/plain 3905 189 33 title: Intracellular ABCB1 as a Possible Mechanism to Explain the Synergistic Effect of Hydroxychloroquine-Azithromycin Combination in COVID-19 Therapy The first one is related to the inverted influx transport of ABCB1, meaning that the azithromycin molecules, in addition to their passive diffusional uptake, are actively captured and trapped inside the vesicles, even if the vesicular intraluminal pH increases and the percentage of protonic drug molecules decreases enabling the backward diffusion of neutral species to the cytosol (Fig. 1) . To sum up, the intracellular ABCB1 could represent a potent target for enhancing the antiviral and antiinflammatory activities of the aminoquinolines when lysosomotropic ABCB1 substrates like azithromycin or ciprofloxacin are combined. In conclusion, we hypothesize that the intracellular ABCB1 may serve as a possible new target for improving the effects of the aminoquinolines when co-administered with a lysosomotropic drug, such as azithromycin or ciprofloxacin in COVID-19 chemotherapy. ./cache/cord-309871-y17puao2.txt ./txt/cord-309871-y17puao2.txt