Abstract
Cellular immune responses to Anisakis simplex L3 antigens were investigated in BALB/c mice injected subcutaneously with a homologous crude extract (CE). Popliteal lymph nodes (PLN) were found to be increased in size and weight after A. simplex CE footpad injection. The effects of A. simplex CE in vitro proliferation were assayed with non-fractionated PLN cells or nylon-wool purified T cells derived from pooled lymph node cells of mice subcutaneously injected with CE. Spleen cells from immunized animals (antigen alone, or larva alone, or antigen plus larva) were studied by flow cytometry. The immunization induced a high proportion of CD4+ and TCRαβ+ T cells. The number of B cells (CD45+ and TCRαβ–) in pre-immunized and infected mice was lower than that observed in animals subjected to infection only. The number of CD4+ T cells increased in the infected and in the pre-immunized and infected mice. In the latter, a decrease of CD8a+ T cells was noted. The greatest increase in CD8a+ and TCRαβ– T cells was found in mice that had been subjected to infection only. Histological analysis showed that the most prominent lesions were gastric and intestinal in animals infected orally with one larva.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Electronic Publication
Rights and permissions
About this article
Cite this article
Perteguer, M., Rodero, M., Flores, J. et al. Cellular immune responses in mice immunized with Anisakis simplex larval antigens. Parasitol Res 87, 396–404 (2001). https://doi.org/10.1007/s004360000362
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s004360000362