کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2591602 | 1131818 | 2011 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Behavioral and physiological effects of acute ketamine exposure in adult zebrafish Behavioral and physiological effects of acute ketamine exposure in adult zebrafish](/preview/png/2591602.png)
Ketamine is a non-competitive glutamatergic antagonist used to induce sedation and analgesia. In sub-anesthetic doses, it induces hyperlocomotion, impairs memory and evokes stereotypic circling in rodents. Zebrafish (Danio rerio) emerged as a promising new animal model to screen the effects of psychotropic compounds. Here, we investigated the effects of sub-anesthetic doses of ketamine on anxiety, locomotion, habituation and social behavior of adult zebrafish. Acute 20-min exposure to 20 and 40 mg/L (but not 2 mg/L) of ketamine reduced anxiety, impaired intra-session habituation, evoked circular swimming and disrupted zebrafish shoaling. Additionally, ketamine reduced whole-body cortisol levels and elevated brain c-fos expression in zebrafish. Our findings demonstrate the sensitivity of zebrafish to behavioral and physiological effects of sub-anesthetic doses of ketamine, further supporting the utility of this species as a model for neuropharmacological research, including testing ketamine and related drugs.
Research highlights
► Ketamine is anxiolytic in several behavioral paradigms in adult zebrafish.
► Habituation deficits and stereotypic rotational behavior in zebrafish are evoked by ketamine.
► Ketamine exposure in zebrafish produces behavioral and physiological phenotypes paralleling rodent and clinical data.
Journal: Neurotoxicology and Teratology - Volume 33, Issue 6, November–December 2011, Pages 658–667