Abstract:
PURPOSE: Lamotrigine (LTG) is an effective clinical treatment for epilepsy associated with absence seizures. However, the impact of LTG administration in studies employing various animal models of epilepsy remains controversial. This study aimed to clarify the outcomes of LTG treatment on absence seizures and comorbid anxiety and depression disorders in Long-Evans rats with spontaneous spike-wave discharges (SWDs). METHODS: LTG (10 mg/kg) or water vehicle was chronically administered perorally to Long-Evans rats (twice daily for 35 days). Cortical activities were recorded to assess the presence of SWDs. Five behavioral tests, including the open field (OF), elevated plus maze (EPM), sucrose consumption (SC), sucrose preference, and forced swimming (FS) tests, were performed after LTG/vehicle treatment. The behavioral indexes of these tests were designed to assess anxiety (OF and EPM tests), depression (SC and FS tests), and preference for hedonistic stimuli (sugar preference test). KEY FINDINGS: Total SWD duration, SWD number, and mean SWD duration were significantly decreased in rats that received 35-day LTG treatment compared with rats that received vehicle treatment. Rats with spontaneous SWDs versus rats with no SWDs showed significant levels of anxiety and depression in the OF, EPM, and SC tests. Rats with SWDs also showed longer immobility in the FS test. However, the LTG-treated group compared with the vehicle group presented with significantly lower manifestations of anxiety and depression in the OF, EPM, SC, and sucrose preference tests and shorter immobility in the FS test. SIGNIFICANCE: The results of this study suggest that chronic LTG treatment can benefit patients with epilepsy via suppression of absence seizures and amelioration of comorbid anxiety and depression.
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Huang HY,Lee HW,Chen SD,Shaw FZdoi
10.1111/j.1528-1167.2012.03664.xsubject
Has Abstractpub_date
2012-11-01 00:00:00pages
2005-14issue
11eissn
0013-9580issn
1528-1167journal_volume
53pub_type
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