Abstract:
BACKGROUND:The emergence of human monkeypox and the potential use of recombinant variola and monkeypox viruses as biological terrorist agents have necessitated the development of therapeutic and prophylactic therapies. The primary, or index, cases of smallpox and/or human monkeypox will likely be identified by a characteristic rash. Effective biomarkers will be required to monitor disease progression, guide the choice of therapeutic intervention strategies and evaluate their efficacies. To address this we have evaluated several biomarkers of disease in a lethal mousepox model. METHODS:The efficacy of a single dose of a hexadecyloxypropyl ester of cidofovir (CMX001) at 20, 25 and 30 mg/kg doses administered on days 4, 5, 6 and 7 post-infection was evaluated in A/Ncr mice intranasally infected with low doses of ectromelia virus (<20 plaque-forming units). Mice were monitored for weight loss, blood interferon-gamma levels, alanine aminotransferase (ALT), aspartate aminotransferase, viral DNA copies and neutrophilia levels to stage disease progression. RESULTS:We have used these biomarkers to establish the optimal dosing regimen for treatment and reveal that a single dose of 25 mg/kg of CMX001 can be efficacious at treating lethal mousepox when administered on days 4 or 5 post-infection. This dose significantly reduces ALT, interferon-gamma and DNA copies found in the blood of infected animals. CONCLUSIONS:A single dose regimen of CMX001 is efficacious at treating mousepox. Disease progression and antiviral efficacy can be monitored using several biomarkers that could readily be used in the case of a human monkeypox or smallpox outbreak.
journal_name
Antivir Therjournal_title
Antiviral therapyauthors
Parker S,Schriewer J,Oberle C,Robertson A,Lanier R,Painter G,Buller RMsubject
Has Abstractpub_date
2008-01-01 00:00:00pages
863-73issue
7eissn
1359-6535issn
2040-2058journal_volume
13pub_type
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journal_title:Antiviral therapy
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章,多中心研究
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章,随机对照试验
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