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Updated: Mar 13, 2026

Assessment of Memory Function in Pilocarpine-induced Epileptic Mice
Published on: June 4, 2020
Major depressive episode, cognition, and epilepsy
Glória Maria Almeida Souza Tedrus1, Lineu Corrêa Fonseca1, Marina Nobrega Augusto2
1School of Medicine, Pontifícia Universidade Católica de Campinas (PUC-Campinas), Brazil.
Depression in epilepsy patients is linked to seizure frequency and cognitive decline. This study found 13% of patients had a major depressive episode, impacting their quality of life.
Area of Science:
- Neurology
- Psychiatry
- Clinical Psychology
Background:
- Epilepsy (PWE) patients often experience complex interactions between depression, disease characteristics, and cognitive function.
- Understanding these relationships is crucial for comprehensive patient care.
Purpose of the Study:
- To assess the prevalence of major depressive episodes in PWE.
- To investigate associations between depression, epilepsy characteristics, and cognitive performance.
Main Methods:
- Included 200 PWE (mean age 47.6 ±15.1 years).
- Utilized the Neurological Disorders Depression Inventory for Epilepsy (NDDI-E) to assess depression.
- Correlated NDDI-E scores with clinical, cognitive, and quality of life (QOLIE-31) data.
Main Results:
- 13% of PWE (26 patients) had NDDI-E scores >15, indicating a possible major depressive episode.
- Higher NDDI-E scores were significantly associated with increased seizure frequency (p=0.022).
- Depression correlated with poorer performance in category fluency tests (p=0.003) and lower quality of life (p<0.001).
Conclusions:
- Possible major depressive episodes are common in PWE and linked to epilepsy severity.
- Cognitive function, specifically category fluency, is impaired in PWE with depression.
- Depression significantly impacts the quality of life for individuals with epilepsy.
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