Ketamine disrupts locomotion and electrolocation in a novel model of schizophrenia, Gnathonemus petersii fish
Veronika Langová, Petra Horká, Jan Hubený, Tomáš Novák, Karel Valeš, Petr Adámek, Kateřina Holubová, Jiřı́ Horáček
Journal of Neuroscience Research March 3, 2023 DOI: 10.1002/jnr.25186 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Experimental study Peer reviewed |
|---|---|
| Population | Weakly electric fish Gnathonemus petersii |
| Interventions | Ketamine Haloperidol |
| Topics | Ketamine Esketamine |
| Keywords | Electroreception Schizophrenia object-oriented programming Fish <actinopterygii> Communication Fishery |
| Citations | 10 |
| Key findings | Ketamine induced positive schizophrenia-like symptoms and disrupted navigation in Gnathonemus petersii, but a low dose of haloperidol did not normalize these symptoms. |
Abstract
The present study aimed to examine a weakly electric fish Gnathonemus petersii (G. petersii) as a candidate model organism of glutamatergic theory of schizophrenia. The idea of G. petersii elevating the modeling of schizophrenia symptoms is based on the fish's electrolocation and electrocommunication abilities. Fish were exposed to the NMDA antagonist ketamine in two distinct series differing in the dose of ketamine. The main finding revealed ketamine-induced disruption of the relationship between electric signaling and behavior indicating impairment of fish navigation. Moreover, lower doses of ketamine significantly increased locomotion and erratic movement and higher doses of ketamine reduced the number of electric organ discharges indicating successful induction of positive schizophrenia-like symptoms and disruption of fish navigation. Additionally, a low dose of haloperidol was used to test the normalization of the positive symptoms to suggest a predictive validity of the model. However, although successfully induced, positive symptoms were not normalized using the low dose of haloperidol; hence, more doses of the typical antipsychotic haloperidol and probably also of a representative of atypical antipsychotic drugs need to be examined to confirm the predictive validity of the model.
Comparable studies
Other experimental studies on ketamine, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Ketamine activates psychosis and alters limbic blood flow in schizophrenia Schizophrenic individuals | 1995 | Experimental study | |
| The spectral exponent of the resting EEG indexes the presence of consciousness during unresponsiveness induced by propofol, xenon, and ketamine Healthy participants | 2019 | Controlled experimental study | n = 15 |
| Ketamine Increases Human Motor Cortex Excitability to Transcranial Magnetic Stimulation Normal human subjects | 2003 | Experimental study | n = 7 |
| Evidence that Subanesthetic Doses of Ketamine Cause Sustained Disruptions of NMDA and AMPA-Mediated Frontoparietal Connectivity in Humans Human participants | 2015 | Experimental study | |
| Simultaneous population pharmacokinetic modelling of ketamine and three major metabolites in patients with treatment‐resistant bipolar depression Patients with treatment-resistant bipolar depression | 2012 | Population pharmacokinetic analysis | n = 9 |
Citations in the library
Cited by 2
- Effects of New Psychoactive Substance Esketamine on Behaviors and Transcription of Genes in Dopamine and GABA Pathways in Zebrafish Larvae. Bulletin of environmental contamination and toxicology March 31, 2024
- Effects of Clozapine, Haloperidol, and the NMDA Antagonist Ketamine on Novel Object Recognition in Gnathonemus petersii: A New Possible Model for Schizophrenia Research Fishes May 15, 2025
Cites 6
- Ketamine-Induced Deficits in Auditory and Visual Context-Dependent Processing in Healthy Volunteers Archives of General Psychiatry December 1, 2000
- Electroencephalographic Spectral and Coherence Analysis of Ketamine in Rats: Correlation with Behavioral Effects and Pharmacokinetics Neuropsychobiology 2011
- Phencyclidine/schizophrenia: one view toward the past, the other to the future. Schizophrenia Bulletin September 1, 2012
- A behavioral and molecular analysis of ketamine in zebrafish. Synapse February 2011
- Models of schizophrenia in humans and animals based on inhibition of NMDA receptors. Neuroscience & Biobehavioral Reviews July 1, 2008
and 1 more in the library