Experimental parameters differentially affect the humoral response of the cholera-toxin-based murine model of food allergy
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Experimental parameters differentially affect the humoral response of the cholera-toxin-based murine model of food allergy. / Kroghsbo, Stine; Christensen, Hanne Risager; Frøkiær, Hanne.
I: International Archives of Allergy and Immunology, Bind 131, Nr. 4, 2003, s. 256-263.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Experimental parameters differentially affect the humoral response of the cholera-toxin-based murine model of food allergy
AU - Kroghsbo, Stine
AU - Christensen, Hanne Risager
AU - Frøkiær, Hanne
PY - 2003
Y1 - 2003
N2 - Background: Recent studies have developed a murine model of IgE-mediated food allergy based on oral coadministration of antigen and cholera toxin (CT) to establish a maximal response for studying immunopathogenic mechanisms and immunotherapeutic strategies. However, for studying subtle immunomodulating factors or factors effective during response initiation, this maximal response-based model is less suitable due to a lack of sensitivity. Therefore, in attempts to identify essential parameters to fine-tune the immune response towards a submaximal level, potentially more sensitive, we were interested in characterizing the individual effects of the parameters in the CT-based model: CT dose, antigen type and dose, and number of immunizations. Methods: BALB/c mice were orally sensitized weekly for 3 or 7 weeks with graded doses of CT and various food antigens (soy-trypsin inhibitor, ovalbumin or ovomucoid). Antigen-specific IgG1, IgG2a, IgA and IgE were monitored by ELISA. Results: The CT dose exerted a clear dose-dependent effect on the antigen-specific antibody response whereas the antigen dose tended to affect the kinetics of the developing response. Both the intensity and kinetics of the antibody response depended on the type of antigen and number of immunizations. Conclusions: The critical parameters of the CT-based murine allergy model differentially control the intensity and kinetics of the developing immune response. Adjustment of these parameters could be a key tool for tailoring the response to submaximal levels rendering the model potentially more sensitive for evaluating the effect of subtle immunomodulating factors that would be lost in the maximal response-based model.
AB - Background: Recent studies have developed a murine model of IgE-mediated food allergy based on oral coadministration of antigen and cholera toxin (CT) to establish a maximal response for studying immunopathogenic mechanisms and immunotherapeutic strategies. However, for studying subtle immunomodulating factors or factors effective during response initiation, this maximal response-based model is less suitable due to a lack of sensitivity. Therefore, in attempts to identify essential parameters to fine-tune the immune response towards a submaximal level, potentially more sensitive, we were interested in characterizing the individual effects of the parameters in the CT-based model: CT dose, antigen type and dose, and number of immunizations. Methods: BALB/c mice were orally sensitized weekly for 3 or 7 weeks with graded doses of CT and various food antigens (soy-trypsin inhibitor, ovalbumin or ovomucoid). Antigen-specific IgG1, IgG2a, IgA and IgE were monitored by ELISA. Results: The CT dose exerted a clear dose-dependent effect on the antigen-specific antibody response whereas the antigen dose tended to affect the kinetics of the developing response. Both the intensity and kinetics of the antibody response depended on the type of antigen and number of immunizations. Conclusions: The critical parameters of the CT-based murine allergy model differentially control the intensity and kinetics of the developing immune response. Adjustment of these parameters could be a key tool for tailoring the response to submaximal levels rendering the model potentially more sensitive for evaluating the effect of subtle immunomodulating factors that would be lost in the maximal response-based model.
KW - Animal model
KW - Antigen-specific IgE
KW - Cholera toxin
KW - ELISA
KW - Food allergy
UR - http://www.scopus.com/inward/record.url?scp=0041571624&partnerID=8YFLogxK
U2 - 10.1159/000072137
DO - 10.1159/000072137
M3 - Journal article
C2 - 12915768
AN - SCOPUS:0041571624
VL - 131
SP - 256
EP - 263
JO - International Archives of Allergy and Immunology
JF - International Archives of Allergy and Immunology
SN - 1018-2438
IS - 4
ER -
ID: 331793649