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Rhesus theta-defensin prevents death in a mouse model of severe acute respiratory syndrome coronavirus pulmonary disease
Journal article   Open access   Peer reviewed

Rhesus theta-defensin prevents death in a mouse model of severe acute respiratory syndrome coronavirus pulmonary disease

Christine L Wohlford-Lenane, David K Meyerholz, Stanley Perlman, Haixia Zhou, Dat Tran, Michael E Selsted and Paul B McCray Jr
Journal of virology, Vol.83(21), pp.11385-11390
11/2009
DOI: 10.1128/JVI.01363-09
PMCID: PMC2772759
PMID: 19710146
url
https://europepmc.org/articles/pmc2772759View
Published (Version of record) Open Access

Abstract

We evaluated the efficacy of rhesus theta-defensin 1 (RTD-1), a novel cyclic antimicrobial peptide, as a prophylactic antiviral in a mouse model of severe acute respiratory syndrome (SARS) coronavirus (CoV) lung disease. BALB/c mice exposed to a mouse-adapted strain of SARS-CoV demonstrated 100% survival and modest reductions in lung pathology without reductions in virus titer when treated with two intranasal doses of RTD-1, while mortality in untreated mice was approximately 75%. RTD-1-treated, SARS-CoV-infected mice displayed altered lung tissue cytokine responses 2 and 4 days postinfection compared to those of untreated animals, suggesting that one possible mechanism of action for RTD-1 is immunomodulatory.
Lung - pathology Severe Acute Respiratory Syndrome - virology Humans Lung Diseases - prevention & control Lung Diseases - drug therapy Severe Acute Respiratory Syndrome - drug therapy SARS Virus - pathogenicity Lung - virology Lung Diseases - virology Macaca mulatta - metabolism Severe Acute Respiratory Syndrome - prevention & control Animals Survival Analysis Defensins - therapeutic use Mice Mice, Inbred BALB C Lung - immunology Disease Models, Animal

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