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Animal models of psychosis - the assessment of EEG and the levels of monoamines in the CNS of the rat
Lipski, Michaela ; Horáček, Jiří (advisor) ; Šulcová, Alexandra (referee) ; Mareš, Jan (referee)
The present work describes animal models of psychosis with the aim on monoamine levels and behavioral/EEG findings. The general part is focused on reporting biochemical and EEG findings in patients with schizophrenia, followed by animal models of schizophrenia and their EEG findings. In the special part, results of behavioral and EEG parameters in three animal models of psychosis are presented. A study by Palenicek et al, 2013 described serotoninergic animal model and showed that 4-bromo-2,5-dimetoxyfenyletylaminu (2C-B) induced deficit in prepulse inhibition of startle reaction and produced dose related biphasic changes in the locomotion (i.e. hypolocomotion was followed by the hyperlocomotion). Low doses of 2C-B decreased EEG power and coherence, while high doses had a temporary biphasic effect with an initial decline followed by an increase in power - a similar effect was also observed in the coherence. In microdialysis study, increased levels of dopamine and its metabolites homovanilic acid and 3-methoxytyramine and decreased levels of 3,4-dihydroxyphenylacetic acid in the nucleus accumbens are described. The increase in the EEG power and coherence after the 2C-B application was associated with an increase in locomotion and congruently with elevated dopamine levels in the nucleus accumbens....
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