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Histopathological changes in the brain of mice given Clostridium perfringens type D epsilon toxin
Abstract:
The distribution, severity and frequency of brain lesions produced in mice by the administration of Clostridium perfringens Type D epsilon toxin were examined by light microscopy. The granular layer of the cerebellum was the area most frequently affected in mice given single doses of toxin. Sequential changes in brain morphology were examined from 1 h to 7 days after injection of toxin. Lesions progressed from an initial vasogenic oedema to malacic foci which commonly were focal and bilaterally symmetrical, with a predilection for white matter. The topographical distribution of these malacic areas is discussed.
Insights
Clostridium perfringens Type D epsilon toxin causes brain lesions in mice, primarily affecting the cerebellum. Lesions progress from swelling to tissue death, often in symmetrical white matter areas.
Area of Science:
- Neuroscience
- Toxicology
- Pathology
Background:
- Clostridium perfringens Type D epsilon toxin is a potent neurotoxin.
- Understanding its effects on the brain is crucial for veterinary and potentially human health.
- Previous studies may not have detailed the sequential morphological changes.
Purpose of the Study:
- To investigate the distribution, severity, and frequency of brain lesions induced by Clostridium perfringens Type D epsilon toxin in mice.
- To characterize the temporal progression of neuropathological changes following toxin administration.
- To identify specific brain regions vulnerable to the toxin's effects.
Main Methods:
- Light microscopy was used to examine brain tissue from mice.
- Mice were administered single doses of Clostridium perfringens Type D epsilon toxin.
- Brain morphology was analyzed sequentially from 1 hour to 7 days post-injection.
Main Results:
- The granular layer of the cerebellum was the most frequently affected area in mice receiving single toxin doses.
- Lesions evolved from initial vasogenic edema to malacic foci (tissue death).
- These malacic areas were often focal, bilaterally symmetrical, and showed a predilection for white matter.
Conclusions:
- Clostridium perfringens Type D epsilon toxin induces characteristic brain lesions in mice.
- The cerebellum, particularly the granular layer, is a primary target.
- The observed progression of edema to symmetrical white matter necrosis highlights the toxin's specific neuropathological impact.