Abstract

Six groups of Swiss albino mice were used; (Gl) as a control, (G2) infected non immunized; (G3) infected and supported by Adj.; (G4) infected; vaccinated with BAAP and supported by Adj.; (G5) infected, vaccinated with SLAP and supported by Adj. and the target group (G6) infected, vaccinated with combined antigens (BAAP + SLAP) and supported by Adjuvant. Mice were sacrificed 8 weeks post infection for assessment the effect of our vaccine through parasitological, histopathological, serological and immunohisto- chemical study. The vaccination of mice with BAAP, SLAP and Adjuvant followed by challenge S. mansoni infection resulted in highest reduction percentages (92% & 86%) for mean numbers of adult burdens and fecal egg counts respectively,(82.4%, 81%) for granuloma number and diameter respectively compared with other groups. The improvement % of all measured enzymes was higher in G6 than other groups.IL1O was significantly increased in G6 than other groups; also, TNF was significantly decreased in G6 than other groups.

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