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Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins
Published on: August 15, 2017
Oxidative stress parameters in different rat brain structures after electroconvulsive shock-induced seizures
Gordana Zupan1, Kristina Pilipović, Ana Hrelja
1Department of Pharmacology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia. gordana.zupan@medri.hr
Progress in Neuro-Psychopharmacology & Biological Psychiatry
|January 19, 2008
Summary
Electroconvulsive shock (ECS) alters brain oxidative stress markers differently across brain regions within 24 hours. While the frontal cortex shows oxidative damage, the hippocampus and cerebellum exhibit increased antioxidant enzyme activity.
Area of Science:
- Neuroscience
- Biochemistry
- Cellular Biology
Background:
- Electroconvulsive therapy (ECT) has been a psychiatric treatment since the 1930s.
- Understanding the cellular mechanisms of ECT's effects remains limited.
- Electroconvulsive shock (ECS) in animal models helps study ECT's impact.
Purpose of the Study:
- To investigate early changes in brain oxidative stress parameters after ECS-induced seizures.
- To examine lipid peroxidation and antioxidant enzyme activities (SOD, GSH-Px) in specific rat brain regions.
Main Methods:
- Single ECS-induced seizures were administered to rats.
- Oxidative stress markers were measured in the hippocampus, cerebellum, frontal cortex, and pons/medulla within 24 hours.
- Levels of lipid peroxidation and activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were quantified.
Main Results:
- Hippocampus and cerebellum showed increased SOD and GSH-Px activity with unchanged lipid peroxidation.
- Pons/medulla region exhibited no significant changes in lipid peroxidation or enzyme activities.
- Frontal cortex displayed elevated lipid peroxidation levels, but unchanged SOD and GSH-Px activities.
Conclusions:
- Single ECS induces structure-specific alterations in brain oxidative stress markers.
- Oxidative lipid damage was observed exclusively in the frontal cortex.
- The hippocampus, cerebellum, and pons/medulla were not oxidatively affected under these experimental conditions.
