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Prenatal protein malnutrition and hippocampal function: rapid kindling
R J Austin-Lafrance1, P J Morgane, J D Bronzino
1Department of Engineering and Computer Science, Trinity College, Hartford, CT 06106.
Brain Research Bulletin
|December 1, 1991
Summary
Prenatal protein malnutrition retards seizure development in rats. Malnourished rats showed slower kindling rates and fewer severe seizures, indicating impaired seizure susceptibility.
Area of Science:
- Neuroscience
- Epilepsy Research
Background:
- Prenatal protein malnutrition is a known risk factor for neurological disorders.
- Kindling is a model for studying epilepsy development and seizure susceptibility.
Purpose of the Study:
- To investigate the impact of prenatal protein malnutrition on perforant path kindling in adult rats.
- To evaluate a rapid kindling paradigm for studying seizure development.
Main Methods:
- Adult rats with prenatal protein malnutrition and control rats were subjected to a rapid kindling paradigm.
- Biphasic electrical stimulations (50 Hz, 5s) were applied to the perforant path every 5 minutes for 1 hour daily over 5 days.
- Seizure activity was assessed using a 0-5 scale.
Main Results:
- Prenatally malnourished rats exhibited significantly fewer stage 5 (convulsive) seizures compared to controls.
- Malnourished rats required more stimulations to reach the first stage 5 seizure.
- A significant increase in stage 1 seizures was observed in the malnourished group, indicating a retarded kindling rate.
- Three malnourished rats did not exhibit any stage 5 seizures.
Conclusions:
- Prenatal protein malnutrition significantly retards the development of seizure activity in the perforant path kindling model.
- The rapid kindling paradigm is effective for studying the effects of insults on seizure susceptibility in a shorter timeframe.