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Facility Reports and Information
U.S. Army Medical Research, Frederick, MD
DOD Funding of Animal Cruelty 2005:
M3: Medical Chemical Defense - 1
Title: Effect of pretreatment with human butyrylcholinesterase
scavengers on the toxicokinetics and binding of nerve agents in guinea
pigs and marmosets
Research Category: M3: Medical Chemical Defense
FY: 2005 Funding (in dollars): $1,632,025
Responsible Organization: U.S. ARMY MEDICAL RESEARCH AND
MATERIEL COMMAND
Primary Contact: TNO Prins Maurits Laboratory
City: Fort Detrick
State: MD
Zip: 21702-5102
Keywords: Laboratory animals ra iv volunteers toxicokinetics
physiologically based models respiratory intoxication nerve agents human
butyrylcholinesterase scavengers
Objective:
Human butyrylcholinesterase (hubuche) is the most promising scavenger
for use as a pretreatment drug against nerve agent intoxication.
Although the results obtained in laboratory animals indicate the
possible usefulness of hubuche as a scavenger, the information reported
so far is insufficient for a thorough and quantitative description of
the protective mechanism, which prevents a reliable extrapolation to
humans. The goal of the research is to determine the toxicokinetics of
nerve agents and hubuche in guinea pigs and marmosets. This is part of a
larger goal to determine whether hubuche can be an effective
pretreatment in humans for exposure to nerve agent.
Approach:
The investigators will determine the blood concentrations of the
stereoisomers of C(+/-)P(+/-)-SOMAN, (+/-)-SARIN, and (+/-)-VX in guinea
pigs pretreated with hubuche subsequent to exposure to nerve agent. They
also will determine the blood concentrations to the stereoisomers of
C(+/-)P(+/-)-SOMAN in marmosets pretreated with hubuche subsequent to
exposure to this agent. Rate constants will be determined from
inhibition of hubuche by the stereoisomers of C(+/-)P(+/-)-SOMAN,(+/-)-SARIN,
and (+/-)-VX. The fate of hubuche in extravascular compartments will be
determined, as will the relative importance of binding sites in these
compartments. Finally, a physiologicially based model for the
intravenous toxicokinetics of C(+/-)P(+/-)-SOMAN in the guinea pig will
be modified and validated on the basis of the results obtained.
________________________________________
Research was conducted in compliance with the Animal Welfare Act and
other Federal statutes and regulations relating to the use of animals in
research and was reviewed and approved by the Institute's Animal Care
and Use Committee.
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Rats, mice, birds, amphibians and other animals have been excluded from coverage by the Animal Welfare Act. Therefore research facility reports do not include these animals. As a result of this situation, a blank report, or one with few animals listed, does not mean that a facility has not performed experiments on non-reportable animals. A blank form does mean that the facility in question has not used covered animals (primates, dogs, cats, rabbits, guinea pigs, hamsters, pigs, sheep, goats, etc.). Rats and mice alone are believed to comprise over 90% of the animals used in experimentation. Therefore the majority of animals used at research facilities are not even counted.
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