Effect of sleep patterns on levetiracetam induced mood changes

Area of Science:

• Neuroscience
• Sleep Medicine
• Pharmacology

Background:

• Levetiracetam, an antiepileptic drug, is commonly associated with neuropsychiatric side effects, including mood alterations like depression, anxiety, agitation, and psychosis.
• Individual susceptibility to these adverse effects varies, prompting investigation into contributing factors beyond the drug itself.

Purpose of the Study:

• To retrospectively analyze the impact of sleep patterns and chronotype on the development of levetiracetam-induced mood changes in adult epilepsy patients.
• To compare the tolerability of levetiracetam across different chronotypes (morning, intermediate, evening).

Main Methods:

• Retrospective analysis of 110 adult epilepsy patients' records.
• Categorization into levetiracetam tolerators and non-tolerators due to mood-related adverse effects.
• Administration of the Morningness-Eveningness Questionnaire (MEQ), Beck's Depression Inventory-II, and Neurological Disorders Depression Inventory in Epilepsy (NDDIE).

Main Results:

• Chronotype was a significant factor in levetiracetam tolerability, with 33% of patients discontinuing the drug due to mood changes.
• Patients intolerant to levetiracetam were predominantly morning chronotypes (86.1%), while tolerant patients included a higher proportion of intermediate (62%) and evening chronotypes (17.6%).
• A statistically significant trend showed increased levetiracetam tolerability from morning to intermediate to evening chronotypes (p<0.001).

Conclusions:

• Chronotype, rather than depression levels, significantly predicts tolerability of levetiracetam's mood-altering side effects.
• Evening chronotypes exhibit the highest tolerability, while morning chronotypes are most susceptible to mood-related adverse effects.
• Further research is warranted to explore underlying mechanisms, including potential underreporting in evening types or genetic factors in morning types.