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The effect of zonisamide on memory processes - A preclinical study
Agata Krupa-Burtnik1, Ewa Zwierzyńska1, Bogusława Pietrzak1
1Department of Pharmacodynamics, Medical University of Lodz, Muszyńskiego 1, 90-151 Łódź, Poland.
Epilepsy & Behavior : E&B
|November 23, 2019
Summary
Zonisamide, an antiepileptic drug, may impair spatial and emotional memory in rats. Effects varied based on dosage and administration frequency, highlighting potential central nervous system impacts.
Area of Science:
- Neuroscience
- Pharmacology
- Behavioral Science
Background:
- Zonisamide is an antiepileptic drug with potential for wider applications.
- While generally considered safe, zonisamide can induce central nervous system disorders.
- Understanding its cognitive effects is crucial for patient safety.
Purpose of the Study:
- To investigate the impact of zonisamide on spatial memory in rats.
- To evaluate the influence of zonisamide on emotional memory in rats.
- To determine dose-dependent and administration-frequency-dependent effects of zonisamide on memory.
Main Methods:
- Adult Wistar rats were used for the study.
- Spatial memory was assessed using the Morris water maze test.
- Emotional memory was evaluated via the Passive avoidance test.
- Zonisamide was administered orally at single doses (50 mg/kg, 100 mg/kg) or repeatedly (50 mg/kg).
Main Results:
- A high acute dose of zonisamide significantly impaired spatial memory.
- Repeated administration of zonisamide affected spatial memory only in the initial study phase.
- Emotional memory deficits were observed exclusively with repeated zonisamide administration.
Conclusions:
- Zonisamide can negatively affect memory and learning processes in rats.
- The extent of memory impairment is dependent on the specific memory type.
- Findings suggest a complex relationship between zonisamide administration and cognitive function.
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