期刊
ARCHIVES OF TOXICOLOGY
卷 94, 期 9, 页码 3173-3184出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00204-020-02817-z
关键词
Mycotoxin; De-epoxy-DON; DOM-1; Intestine; Spleen; Colitis; Immune response
类别
资金
- French National Research Agency [CaDON 15-CE21-0001, Genofood 19-CE34]
The incidence of inflammatory bowel diseases (IBD) is increasing in both Western and developing countries. IBD are multifactorial disorders involving complex interactions between genetic, immune, and environmental factors such as exposure to food contaminants. Deoxynivalenol (DON) is the most prevalent mycotoxin that contaminates staple food and induces intestinal breakdown and inflammatory response. To delineate the role of DON oral exposure in IBD, we used a Dextran sulfate sodium (DSS) colitis model in rats fed with a DON-contaminated diet or a control diet for 4 weeks. Colitis was induced in the 4th week by increasing concentrations of DSS in the drinking water (0, 2, 3 or 5%). DON exacerbated body weight loss and accelerated the appearance of symptoms in animals treated with DSS. DON increased morphological damage, pro-inflammatory markers (myeloperoxidase, CXCL-1 and IL-1 beta) and immune cell responses. Inlamina propriaof the rat with colitis, DON increased adaptive and innate immune responses after anti-CD3/28 or LPS stimulation, respectively. In the spleen, DON increased IFN gamma secretion and reduced Treg populations. Interestingly, De-epoxy-DON (DOM-1) a detoxified form of DON did not have any consequences on colitis. These results suggest that DON is a risk factor in the onset of IBD.
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