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Effect of cosensitization with buckwheat flour extract on the production of house dust mite-specific IgE.

Shin, YH; Sohn, MH; Oh, S; Lee, KE; Yong, TS; Park, JW; Hong, CS; Kim, KE; Lee, SY
Journal of Korean medical science, 22(2):198-204, 2007
Journal Title
Journal of Korean medical science
There are studies reporting food sensitization in infancy increases the risk of sensitization to inhalants later in life. We performed a study to evaluate whether cosensitization with buckwheat (BW) has an effect on the production of house dust mite-IgE. C3H/HeJ mice (4 weeks, female) were sensitized with house dust mite (HDM)/Al (OH)(3), intraperitoneally on day 0, followed by 4 intranasal sensitizations (on days 14, 15, 16, and 21). Group 1 was cosensitized intragastrically with BW/cholera toxin (CT) (on days 0, 1, 2, 7, and 18) during sensitization with HDM, group 2 was cosensitized intragastrically with CT only (on days 0, 1, 2, 7, and 18), and group 3 was used as controls. HDM- and BW-IgE and antigen-specific T-cell proliferation and cytokine production were evaluated. In Group 1, BW-IgE levels were highest at week 4, and the HDM-IgE at week 3 (98.45+/-64.37 ng/mL and 169.86+/-55.54 ng/mL, respectively). In Group 2, HDM-IgE levels reached a peak at week 3, remarkably higher (810.52+/-233.29 ng/mL) compared to those of Group 1 (169.86+/-55.54 ng/mL). The interleukin (IL)-4 and interferon (IFN)-beta in the HDM-stimulated culture supernatants of splenocytes were not significantly different among groups. We postulate that the cosensitization with BW may down-regulate the specific IgE response to HDM.
MeSH terms
AnimalsDermatitis, Atopic/immunology*Disease Models, AnimalFagopyrum/adverse effects*FemaleFlour/adverse effects*Food Hypersensitivity/immunology*Immunization/methods*Immunoglobulin E/immunology*MiceMice, Inbred C3HPlant Extracts/adverse effectsPyroglyphidae/immunology*
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