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10.1002/cpt.1909

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32438446!7280633!32438446
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suck abstract from ncbi


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pmid32438446      Clin+Pharmacol+Ther 2020 ; 108 (4): 775-790
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  • Prioritization of Anti-SARS-Cov-2 Drug Repurposing Opportunities Based on Plasma and Target Site Concentrations Derived from their Established Human Pharmacokinetics #MMPMID32438446
  • Arshad U; Pertinez H; Box H; Tatham L; Rajoli RKR; Curley P; Neary M; Sharp J; Liptrott NJ; Valentijn A; David C; Rannard SP; O'Neill PM; Aljayyoussi G; Pennington SH; Ward SA; Hill A; Back DJ; Khoo SH; Bray PG; Biagini GA; Owen A
  • Clin Pharmacol Ther 2020[Oct]; 108 (4): 775-790 PMID32438446show ga
  • There is a rapidly expanding literature on the in vitro antiviral activity of drugs that may be repurposed for therapy or chemoprophylaxis against severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). However, this has not been accompanied by a comprehensive evaluation of the target plasma and lung concentrations of these drugs following approved dosing in humans. Accordingly, concentration 90% (EC(90) ) values recalculated from in vitro anti-SARS-CoV-2 activity data was expressed as a ratio to the achievable maximum plasma concentration (C(max) ) at an approved dose in humans (C(max) /EC(90) ratio). Only 14 of the 56 analyzed drugs achieved a C(max) /EC(90) ratio above 1. A more in-depth assessment demonstrated that only nitazoxanide, nelfinavir, tipranavir (ritonavir-boosted), and sulfadoxine achieved plasma concentrations above their reported anti-SARS-CoV-2 activity across their entire approved dosing interval. An unbound lung to plasma tissue partition coefficient (K(p) U(lung) ) was also simulated to derive a lung C(max) /half-maximal effective concentration (EC(50) ) as a better indicator of potential human efficacy. Hydroxychloroquine, chloroquine, mefloquine, atazanavir (ritonavir-boosted), tipranavir (ritonavir-boosted), ivermectin, azithromycin, and lopinavir (ritonavir-boosted) were all predicted to achieve lung concentrations over 10-fold higher than their reported EC(50) . Nitazoxanide and sulfadoxine also exceeded their reported EC(50) by 7.8-fold and 1.5-fold in lung, respectively. This analysis may be used to select potential candidates for further clinical testing, while deprioritizing compounds unlikely to attain target concentrations for antiviral activity. Future studies should focus on EC(90) values and discuss findings in the context of achievable exposures in humans, especially within target compartments, such as the lungs, in order to maximize the potential for success of proposed human clinical trials.
  • |Antiviral Agents/*administration & dosage/blood[MESH]
  • |Betacoronavirus/*drug effects[MESH]
  • |COVID-19[MESH]
  • |Coronavirus Infections/blood/*drug therapy[MESH]
  • |Drug Delivery Systems/*methods[MESH]
  • |Drug Repositioning/*methods[MESH]
  • |Humans[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/blood/*drug therapy[MESH]


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