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10.1371/journal.pone.0237480

http://scihub22266oqcxt.onion/10.1371/journal.pone.0237480
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33596218!7888609!33596218
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suck abstract from ncbi


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pmid33596218      PLoS+One 2021 ; 16 (2): e0237480
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  • Iota-carrageenan neutralizes SARS-CoV-2 and inhibits viral replication in vitro #MMPMID33596218
  • Morokutti-Kurz M; Froba M; Graf P; Grosse M; Grassauer A; Auth J; Schubert U; Prieschl-Grassauer E
  • PLoS One 2021[]; 16 (2): e0237480 PMID33596218show ga
  • In the absence of a vaccine and other effective prophylactic or therapeutic countermeasures the severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) remains a significant public health threat. Attachment and entry of coronaviruses including SARS-CoV-2 is mainly mediated by the spike glycoprotein. Here, we show that iota-carrageenan can inhibit the cell entry of the SARS-CoV-2 spike pseudotyped lentivirus in a dose dependent manner. SARS-CoV-2 spike pseudotyped lentivirus particles were efficiently neutralized with an IC50 value of 2.6 mug/ml iota-carrageenan. Experiments with patient isolated wild type SARS-CoV-2 virus showed an inhibition of replication in a similar range. In vitro data on iota-carrageenan against various Rhino- and endemic Coronaviruses showed similar IC50 values and translated readily into clinical effectiveness when a nasal spray containing iota-carrageenan demonstrated a reduction of severity and duration of symptoms of common cold caused by various respiratory viruses. Accordingly, our in vitro data on SARS-CoV-2 spike pseudotyped lentivirus and replication competent SARS-CoV-2 suggest that administration of iota-carrageenan may be an effective and safe prophylaxis or treatment for SARS-CoV-2 infections.
  • |Animals[MESH]
  • |Antibodies, Viral/immunology[MESH]
  • |Antiviral Agents/pharmacology[MESH]
  • |COVID-19 Drug Treatment[MESH]
  • |COVID-19/immunology/metabolism/*virology[MESH]
  • |Carrageenan/*pharmacology[MESH]
  • |Chlorocebus aethiops[MESH]
  • |HEK293 Cells[MESH]
  • |Humans[MESH]
  • |Lentivirus/metabolism[MESH]
  • |Middle Aged[MESH]
  • |SARS-CoV-2/*drug effects/physiology[MESH]
  • |Spike Glycoprotein, Coronavirus/immunology/metabolism[MESH]
  • |Vero Cells[MESH]
  • |Virus Internalization/drug effects[MESH]


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