Abstract
The aim of this study was to delineate the role of the Fas pathway in vaccination against Helicobacter pylori. C57BL/6 and Fas ligand–deficient (gld) mice were divided into 3 groups: control, H. pyloriinfected, and orally vaccinated (H. pyloriwhole cell sonicate and cholera toxin adjuvant). Oral vaccination prevented H. pyloricolonization in 78% of C57BL/6 mice compared to only 18% of gldmice. Vaccination did not alter the degree of apoptosis in either strain of mice. Vaccination led to significant increase in interleukin (IL)-5 and IL-10 in C57BL/6 but not gldmice. H. pyloriinfection increased interferon (IFN)-γ levels in C57BL/6 but not in gldmice while vaccination had no effect on IFN-γ levels in either strain. Oral vaccination is not effective in Fas ligand–deficient mice likely owing to lack of effective cytokine responses. This indicates that the Fas pathway plays a critical role in promoting an appropriate effector response following H. pylorivaccination.
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Avitzur, Y., Galindo-Mata, E. & Jones, N.L. Oral Vaccination Against Helicobacter pyloriInfection Is Not Effective in Mice With Fas Ligand Deficiency. Dig Dis Sci 50, 2300–2306 (2005). https://doi.org/10.1007/s10620-005-3051-5
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DOI: https://doi.org/10.1007/s10620-005-3051-5