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Because of the high failure rate of antibiotic treatment in patients with anthrax there is a need for additional therapies such as passive immunization with therapeutic antibodies. In this study, we used codon-optimized plasmid DNAs (DNA vaccines) encoding Bacillus anthracis protective antigen (PA) to immunize rabbits for producing anti-anthrax antibodies for use in passive immunotherapy. The antisera...
A live rotavirus prime/DNA boost vaccine regimen was evaluated in a gnotobiotic pig model for human rotavirus (HRV) diarrhea. Plasmid DNA expressing rotavirus inner capsid VP6 was administered to pigs intramuscularly (IM) twice after oral priming with attenuated (Att) Wa strain HRV (AttHRV/VP6DNA2x). Other groups included: (1) VP6 DNA IM 2x then AttHRV orally (VP6DNA2x/AttHRV); (2) VP6 DNA IM 3x (VP6DNA3x)...
Intramuscular (i.m.) injection of murine VP6 DNA vaccines raised high titers of rotavirus-specific serum IgG and IgA antibodies in BALB/c mice. A Th1-like antibody response was generated based on the ratio of serum IgG2a to IgG1 antibodies. Rotavirus-specific serum IgA but not fecal IgA was detected in mice prior to rotavirus challenge. Partial protection against rotavirus challenge was achieved as...
It is estimated that Group A rotavirus diarrhea causes as many as one million deaths per year in children worldwide, and effective vaccines will be essential for their control. Plasmid DNA vaccines encoding murine rotaviral proteins VP4, VP6, or VP7 were tested in adult BALB/c mice for their ability to induce immune responses and provide protection against rotavirus challenge. The vaccines were...
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