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Differential immune modulation by deoxynivalenol (vomitoxin) in mice
Mohammad Rafiqul Islam1, Yoon Seok Roh1, Jinho Kim2
1Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Jeonju 561-756, South Korea.
Toxicology Letters
|June 25, 2013
Summary
The mycotoxin deoxynivalenol (DON) alters immune cell populations and Toll-like receptor expression in mice. DON exposure also impacts immune cell apoptosis and cytokine production, potentially increasing susceptibility to infections.
Area of Science:
- Immunology
- Toxicology
- Food Science
Background:
- Deoxynivalenol (DON) is a common mycotoxin contaminant in grains.
- DON's immunotoxicity is not fully understood.
- This study investigates DON's immunomodulatory effects in mice.
Purpose of the Study:
- To investigate the differential immunomodulatory effects of DON in mice.
- To assess DON's impact on immune cell populations, Toll-like receptor expression, cytokine profiles, and apoptosis.
- To understand the potential health risks associated with DON exposure.
Main Methods:
- Female BALB/c mice were orally administered DON (0, 0.5, or 2 mg/kg) for 14 days.
- Immunotoxicity tests included flow cytometry for immune cell populations, gene expression analysis for TLRs, and serum cytokine/immunoglobulin level measurements.
- Apoptosis, autophagy gene expression, and macrophage responses were also analyzed.
Main Results:
- DON significantly altered immune cell populations in spleen, lymph nodes, and intestines.
- DON modulated Toll-like receptor (TLR) expression and affected serum and mucosal immunoglobulin levels.
- DON induced apoptosis, altered autophagy gene expression, and differentially modulated cytokine production in macrophages.
Conclusions:
- DON exhibits significant immunomodulatory effects in mice.
- These alterations may compromise the immune system, potentially increasing susceptibility to microbial invasion.
- Further research is needed to fully elucidate DON's long-term health impacts.
