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  • Title: Trichinella spiralis: the effect of oral immunization and the adjuvancy of cholera toxin on the mucosal and systemic immune response of mice.
    Author: deVos T, Dick TA.
    Journal: Exp Parasitol; 1993 Mar; 76(2):182-91. PubMed ID: 8454027.
    Abstract:
    The effect of oral immunization and the adjuvancy of cholera toxin (CT) were examined in mice infected with Trichinella spiralis. The mean of total muscle larvae was reduced by 36% in mice infected with Trichinella larvae in combination with CT. In mice fed soluble, particulate, or soluble/particulate antigens in combination with CT on Days 0, 14, and 21, and challenged with Trichinella larvae on Day 28, there was a significant reduction in adult worm fecundity (50%), worm size (20-30%), and the mean of total muscle larvae (75%) but no apparent effect on the rate of expulsion on Day 6 postchallenge. Following antigen feeding, but prior to challenge with Trichinella (Day 28), the immunoglobulin response was positive in only a small proportion of mice. On Day 6 following challenge with Trichinella larvae, the biliary immunoglobulin response was enhanced approximately 10-fold (P < 0.05) in all antigen-feeding treatments which included CT, compared with nonimmunized controls or antigen-feeding treatments which did not include CT. Similarly, the serum IgG response was enhanced following challenge with Trichinella larvae in treatments fed soluble, particulate, or soluble/particulate antigens with CT. The response was also enhanced in the particulate, but not in soluble or soluble/particulate antigen treatments without CT.
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