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Hormonal change and cytokine mRNA expression in peripheral blood mononuclear cells during the development of canine autoimmune thyroiditis

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Authors
Choi, E.-W.; Shin, I.-S.; Bhang, D.-H.; Lee, D.-H.; Bae, B.-K.; Kang, M.-S.; Kim, Dae-Yong; Hwang, Cheol Yong; Lee, Chang Woo; Youn, Hwa Young
Issue Date
2006-08-18
Publisher
Blackwell Publishing;
British Society for Immunology
Citation
Clin Exp Immunol 2006; 146:101–108
Keywords
autoimmune diseaseautoimmune thyroiditiscytokinedogPBMCRT–PCRTh1:Th2
Abstract
To elucidate the hormonal change and alteration in cytokine expression in peripheral blood mononuclear cells (PBMC) during the early stage of autoimmune thyroiditis, we have developed a canine model of this disease, in which normal dogs were immunized with bovine thyroglobulin (Tg) and/or canine thyroid extract. Serum samples were collected weekly, anti-canine Tg antibody was measured by enzyme-linked immunosorbent assay (ELISA) and thyroid stimulating hormone (TSH) and total T4 levels by radioimmunoassay. We also assayed T lymphocyte proliferation in response to Tg, as well as measuring cytokine mRNA by semiquantitative reverse transcription–polymerase chain reaction (RT–PCR). All six dogs immunized with bovine Tg had both canine Tg autoantibody and anti-T4 antibody. When the sample from the highest TgAA titre time-point was compared with baseline the expression of mRNA encoding the Th1-type cytokine such as interferon (IFN)-γ, interleukin (IL)-18 and IL-15 was increased during the development of autoimmune thyroiditis. Expression of the Th2-type cytokine, IL-6 showed minimal change and IL-4 expression was not detected in any of the samples. Expression of the T suppressive cytokine, IL-10 and transforming growth factor (TGF)-β was increased in the presence of antigen stimulation. These findings suggest that, although autoimmune thyroiditis is an organ-specific autoimmune disease, systemic cytokine mRNA expression is also changed.
ISSN
0009-9104
Language
English
URI
http://hdl.handle.net/10371/6509
DOI
https://doi.org/10.1111/j.1365-2249.2006.03187.x
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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