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Oral sensitization of W/W(v) mice with ovalbumin and possible involvement of the decrease in gammadelta-T cells.
- Source :
-
Biological & pharmaceutical bulletin [Biol Pharm Bull] 2003 Sep; Vol. 26 (9), pp. 1260-5. - Publication Year :
- 2003
-
Abstract
- Mast-cell-deficient WBB6F1-W/W(v) mice (W/W(v)) and congenic wild-type (+/+) mice were sensitized by oral administration of 0.1 or 1.0 mg ovalbumin (OVA) in the form of gavage every day for 9 weeks, and active systemic anaphylaxis (ASA) was induced by intraperitoneal injection of OVA. Production of OVA-specific IgG1 in response to oral sensitization of the W/W(v) mice was very high, and the production of IL-4, IL-5 and IL-10 by splenocytes re-stimulated with OVA in vitro was increased. These findings suggest that Th2-dominant helper T-cell activation had occurred. By contrast, production of OVA-specific IgG1 was low in +/+ mice, and no significant increase in production of Th2-type cytokines by the splenocytes of +/+ mice was observed. Population analysis in Peyer's patches by flow cytometry revealed that the proportion of the CD11c(+) cell in the W/W(v) mice was slightly increased after antigen stimulation. Analysis of the cell surface markers of intraepithelial lymphocytes (IELs) by flow cytometry showed that the proportion of TCRgammadelta-T cells was extremely lower in the W/W(v) mice, especially in the antigen sensitized group. The proportion of TCRgammadelta-T cells in the splenocytes of W/W(v) mice was also lower than in +/+ mice. Taken together, the above findings indicate that W/W(v) mice seems to be a good model not only for studying the induction mechanism of food allergy but for examining the role of TCRgammadelta-T cells in food-induced hypersensitivity.
- Subjects :
- Anaphylaxis physiopathology
Animals
Body Temperature physiology
Body Weight physiology
Cytokines biosynthesis
Flow Cytometry
Immunization
Immunoglobulin A analysis
Immunoglobulin A biosynthesis
Immunoglobulin E analysis
Immunoglobulin E biosynthesis
Immunoglobulin G analysis
Immunoglobulin G biosynthesis
Mice
Mice, Inbred Strains
Peyer's Patches cytology
Peyer's Patches immunology
Proto-Oncogene Proteins c-kit biosynthesis
Spleen cytology
Spleen drug effects
Spleen metabolism
Th1 Cells immunology
Th2 Cells immunology
Immunity, Mucosal immunology
Intestinal Mucosa immunology
Ovalbumin immunology
T-Lymphocytes immunology
Subjects
Details
- Language :
- English
- ISSN :
- 0918-6158
- Volume :
- 26
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Biological & pharmaceutical bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 12951468
- Full Text :
- https://doi.org/10.1248/bpb.26.1260