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Differential Effects of Typical and Atypical Antipsychotics on MK-801-induced EEG Changes in Rats

Kwon, Jee-Sook    (Department of Pharmacology, School of Medicine, School of Dentistry, Kyungpook National University   ); Kim, Ki-Min    (Department of Pharmacology, School of Medicine, School of Dentistry, Kyungpook National University   ); Chang, Su-Min    (Department of Pharmacology, School of Medicine, School of Dentistry, Kyungpook National University   ); Kim, Choong-Young    (Department of Pharmacology, School of Medicine, School of Dentistry, Kyungpook National University   ); Chung, Tai-Ho    (WHO Collaboration Viral Hepatitis Center, School of Dentistry, Kyungpook National University   ); Choi, Byung-Ju    (Deportment of Dental Pharmacology, School of Dentistry, Kyungpook National University   ); Lee, Maan-Gee    (Department of Pharmacology, School of Medicine, School of Dentistry, Kyungpook National University  );
  • 초록

    We examined whether the abnormal EEG state by NMDA receptor blocker MK-801 can be reversed by typical and atypical antipsychotics differentially by comparing their spectral profiles after drug treatment in rats. The spectral profiles produced by typical antipsychotics chlorpromazine (5 mg/kg, i.p.) and haloperidol (0.5 mg/kg, i.p.) were differ from that by atypical antipsychotic clozapine (5 mg/kg, i.p.) in the rats treated with or without MK-801 treatment (0.2 mg/kg, i.p.) which produce behavioral abnormalities like hyperlocomotion and stereotypy. The dissimilarity between the states produced by antipsychotics and the control state was examined with the distance of the location of the canonical variables calculated by stepwise discriminant analysis with the relative band powers as input variables. Although clozapine produced more different state from normal state than typical antipsychotics, clozapine could reverse the abnormal schizophrenic state induced by MK-801 to the state closer to the normal state than the typical antipsychotics. The results suggest that atypical anesthetic can reverse the abnormal schizophrenic state with negative symptom to the normal state better than typical antipsychotic. The results indicate that the multivariate discriminant analysis using the spectral parameters can help differentiate the antipsychotics with different actions.


  • 주제어

    Schizophrenia .   MK-801 .   Antipsychotics .   EEG .   Power spectral analysis .   Linear discriminant analysis.  

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  • 이 논문을 인용한 문헌 (1)

    1. 2009. "" The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology, 13(3): 147~151     

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