Related Experiment Videos
Mesenteric mast cell degranulation in acute T-2 toxin poisoning
J A Doebler1, L J Martin, J D Morse
1Neurotoxicology Branch, U.S. Army Medical Research Institute of Chemical Defense, Aberdeen Proving Ground-Edgewood Area, MD 21010.
Toxicology Letters
|August 1, 1992
Summary
Acute T-2 toxin exposure in rats caused mast cell degranulation, indicated by reduced granulation. This suggests mast cells may play a role in T-2 toxin-induced cardiovascular collapse.
Area of Science:
- Toxicology
- Cell Biology
- Immunology
Background:
- T-2 toxin is a potent mycotoxin with known toxic effects.
- Mast cells are immune cells involved in inflammatory and allergic responses.
- The cardiovascular effects of T-2 toxin are not fully understood.
Purpose of the Study:
- To investigate the effect of T-2 toxin on rat mesenteric mast cell granulation.
- To determine if mast cell activation is involved in T-2 toxin intoxication.
Main Methods:
- Cytophotometric analysis was used to measure mast cell granulation.
- The metachromatic reaction of mast cell granules with azure B was assessed.
- Rats were injected with varying doses of T-2 toxin (0.5-1.5 LD50, i.p.).
Main Results:
- T-2 toxin exposure led to hypogranulation of mast cells.
- This effect was observed 8 hours post-injection.
- Hypogranulation indicates a diminution of metachromatic material within mast cell granules.
Conclusions:
- Acute T-2 toxin intoxication activates mast cells.
- Mast cell mediators may contribute to cardiovascular collapse induced by T-2 toxin.
- Further research is warranted to explore the role of mast cells in T-2 toxin toxicity.