title: Effect of cosensitization with buckwheat flour extract on the production of house dust mite-specific IgE.
abstract: 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.
authors: Department of Pediatrics, Pochon CHA University College of Medicine, Seoul, Korea.
authors: Youn Ho
authors: YH
authors: Shin
authors: Myung Hyun
authors: MH
authors: Sohn
authors: Sejo
authors: S
authors: Oh
authors: Kyung Eun
authors: KE
authors: Lee
authors: Tae Soon
authors: TS
authors: Yong
authors: Jung Won
authors: JW
authors: Park
authors: Chein Soo
authors: CS
authors: Hong
authors: Kyu Earn
authors: KE
authors: Kim
authors: Soo Young
authors: SY
authors: Lee
mesh_terms: D000818:Animals; D003876:Dermatitis, Atopic / Q000276:immunology*; D004195:Disease Models, Animal; D019612:Fagopyrum / Q000009:adverse effects*; D005260:Female; D005433:Flour / Q000009:adverse effects*; D005512:Food Hypersensitivity / Q000276:immunology*; D007114:Immunization / Q000379:methods*; D007073:Immunoglobulin E / Q000276:immunology*; D051379:Mice; D008809:Mice, Inbred C3H; D010936:Plant Extracts / Q000009:adverse effects; D039981:Pyroglyphidae / Q000276:immunology*
chemical_list: D010936:Plant Extracts; D007073:Immunoglobulin E