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Decreased resistance to mycobacterial infection in mice fed a trichothecene compound (T-2 toxin)
Abstract:
The effect of T-2 toxin, a trichothecene compound, on bacterial infection was examined in mice infected intravenously with mycobacteria. T-2 toxin dissolved in olive oil was given orally in a dose of 0.1 mg, six to 12 times, at various stages of infection. The resistance-decreasing effect of the toxin was judged by two different criteria, the mouse survival period and the fate of tissue viable counts. This effect was accompanied by a decreased spleen weight. T-2 toxin was found to be a more potent immunosuppressing agent in this model than 5 mg of cortisone given intraperitoneally according to a similar schedule. In view of these observations, the potential importance of this mycotoxin was considered in relation to food hygiene.
Insights
T-2 toxin, a mycotoxin, significantly decreased mouse resistance to mycobacterial infection, acting as a potent immunosuppressant. This finding highlights concerns for food hygiene due to T-2 toxin
Area of Science:
- Immunology
- Toxicology
- Microbiology
Background:
- T-2 toxin is a trichothecene mycotoxin with known toxic properties.
- Bacterial infections, such as mycobacterial infections, pose significant health risks.
- The impact of mycotoxins on host immune response during infection requires further investigation.
Purpose of the Study:
- To investigate the effect of T-2 toxin on the course of mycobacterial infection in a mouse model.
- To evaluate T-2 toxin's immunosuppressive potential compared to a known immunosuppressant.
Main Methods:
- Mice were infected intravenously with mycobacteria.
- T-2 toxin was administered orally at a dose of 0.1 mg multiple times during infection.
- Mouse survival and tissue viable bacterial counts were assessed.
- Spleen weight was measured as an indicator of immune response.
Main Results:
- T-2 toxin administration led to decreased mouse survival and increased bacterial load in tissues.
- A reduction in spleen weight was observed in T-2 toxin-treated mice.
- T-2 toxin demonstrated a more potent immunosuppressive effect than cortisone in this model.
Conclusions:
- T-2 toxin significantly impairs host resistance to mycobacterial infection.
- T-2 toxin acts as a potent immunosuppressing agent, with implications for food hygiene.
- Further research is warranted to understand the mechanisms and broader implications of T-2 toxin's immunotoxicity.