Neary, M 
ORCID: 0000-0002-4960-2139, Box, H, Sharp, J ORCID: 0000-0001-8482-5736, Tatham, L ORCID: 0000-0001-9448-8876, Curley, P ORCID: 0000-0003-4596-2708, Herriott, J, Kijak, E ORCID: 0009-0009-3576-7635, Arshad, U ORCID: 0000-0003-1586-1885, Hobson, JJ ORCID: 0000-0003-2551-1774, Rajoli, Rkr ORCID: 0000-0002-6015-5712 et al (show 8 more authors)
(2021)
Evaluation of intranasal nafamostat or camostat for SARS-CoV-2 chemoprophylaxis in Syrian golden hamsters.
[Preprint]
Abstract
Successful development of a chemoprophylaxis against SARS-CoV-2 could provide a tool for infection prevention implementable alongside vaccination programmes. Camostat and nafamostat are serine protease inhibitors that inhibit SARS-CoV-2 viral entry in vitro but have not been characterised for chemoprophylaxis in animal models. Clinically, nafamostat is limited to intravenous delivery and while camostat is orally available, both drugs have extremely short plasma half-lives. This study sought to determine whether intranasal dosing at 5 mg/kg twice daily was able to prevent airborne transmission of SARS-CoV-2 from infected to uninfected Syrian golden hamsters. SARS-CoV-2 viral RNA was above the limits of quantification in both saline- and camostat-treated hamsters 5 days after cohabitation with a SARS-CoV-2 inoculated hamster. However, intranasal nafamostat-treated hamsters remained RNA negative for the full 7 days of cohabitation. Changes in body weight over the course of the experiment were supportive of a lack of clinical symptomology in nafamostat-treated but not saline- or camostat-treated animals. These data are strongly supportive of the utility of intranasally delivered nafamostat for prevention of SARS-CoV-2 infection and further studies are underway to confirm absence of pulmonary infection and pathological changes.
| Item Type: | Preprint |
|---|---|
| Uncontrolled Keywords: | 3207 Medical Microbiology, 32 Biomedical and Clinical Sciences, Prevention, Infectious Diseases, Emerging Infectious Diseases, Coronaviruses, Infection, 3 Good Health and Well Being |
| Divisions: | Faculty of Health & Life Sciences Faculty of Health & Life Sciences > Inst. Systems, Molec & Integrative Biology > Inst. Systems, Molec & Integrative Biology |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 21 Jul 2021 11:26 |
| Last Modified: | 06 Nov 2025 17:57 |
| DOI: | 10.1101/2021.07.08.451654 |
| Open Access URL: | https://www.google.com/search?client=firefox-b-e&q... |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3130833 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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