Genetic background contributes to the co-morbidity of anxiety and depression with audiogenic seizure propensity and responses to fluoxetine treatmentстатья

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Дата последнего поиска статьи во внешних источниках: 11 мая 2017 г.

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[1] Genetic background contributes to the co-morbidity of anxiety and depression with audiogenic seizure propensity and responses to fluoxetine treatment / K. Y. Sarkisova, I. B. Fedotova, N. M. Surina et al. // Epilepsy and Behavior. — 2017. — Vol. 68. — P. 95–102. Background: Anxiety and depression are the most frequent comorbidities of different types of convulsive and non-convulsive epilepsies. Increased anxiety and depression-like phenotype have been described in the genetic absence epilepsy models as well as in models of limbic epilepsy and acquired seizure models, suggesting a neurobiological connection. However, whether anxiety and/or depression are comorbid to audiogenic epilepsy remains unclear. The aim of this study was to investigate whether anxiety or depression-like behavior can be found in rat strains with different susceptibility to audiogenic seizures (AS) and whether chronic fluoxetine treatment affects this co-morbidity. Methods: Behavior in the elevated plus-maze and the forced swimming test was studied in four strains: Wistar rats non-susceptible to AS; Krushinsky–Molodkina (KM) strain, selectively bred for AS propensity from outbred Wistar rats; and a selection lines bred formaximal AS expression (strain “4”) and for a lack of AS (strain “0”) from KM ×Wistar F2 hybrids. Effects of chronic antidepressant treatment on AS and behavior were also evaluated. Results:Anxiety and depression levelswere higher in KM rats (with AS) comparedwithWistar rats (without AS), indicating the comorbidity with AS. However, in strains “4” and “0” with contrasting AS expression, but with a genetic background close to KM rats, anxiety and depression were not as divergent as in KMs versus Wistars. Fluoxetine treatment exerted an antidepressant effect in all rat strains irrespective of its effect on AS. Conclusions: Genetic background contributes substantively to the co-morbidity of anxiety and depression with AS propensity. [ DOI ]

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