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Vaccination with botulinum neurotoxin fragments prevents botulism.

Vaccine Weekly

| August 04, 2004 | COPYRIGHT 2004 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2004 AUG 4 - (NewsRx.com & NewsRx.net) -- Vaccination with botulinum neurotoxin fragments prevents botulism.

"Mice and ducks were subcutaneously immunized with recombinant whole heavy (H) chains of Clostridium botulinum type C and D neurotoxins, which were expressed as glutathione S-transferase fusion proteins. In the case of mice, it was confirmed that two immunizations with type C- and D-H chains, 10 mcg each time, significantly increased the specific antibodies against 100-kDa H chains of type C and D neurotoxins in an immunoblot analysis and an enzyme-linked immunosorbent assay, respectively," investigators in Japan report.

"The mice immunized with type G and D-H chains showed no symptoms of botulism when they were challenged with C- and D-16 S toxins at doses, given intraperitoneally, of up to 10[superscript]5 and 10[superscript]6 minimum lethal doses (MLD), respectively, per mouse," said Hideyuki Arimitsu at Okayama University and collaborators in Japan. "Ducks were immunized with a total of 100 mcg of type C-H chain. The ducks also developed specific antibodies to the type C-H chain and showed significant protection against a challenge with 10[superscript]3 duck MLD of C-16 S toxin ...

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Source: HighBeam Research, Vaccination with botulinum neurotoxin fragments prevents botulism.

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