Long-lasting impairment of associative learning is correlated with a dysfunction of N-methyl-D-aspartate-extracellular signaling-regulated kinase signaling in mice after withdrawal from repeated administration of phencyclidine

Takeshi Enomoto, Yukihiro Noda, Akihiro Mouri, Eun Joo Shin, Dayong Wang, Rina Murai, Kazuo Hotta, Hiroshi Furukawa, Atsumi Nitta, Hyoung Chun Kim, Toshitaka Nabeshima

Research output: Contribution to journalArticle

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Abstract

In humans, the administration of phencyclidine causes schizophrenic-like symptoms that persist for several weeks after withdrawal from phencyclidine use. We demonstrated here that mice pretreated with phencyclidine (10 mg/kg/day s.c. for 14 days) showed an enduring impairment of associative in a Pavlovian fear conditioning 8 days after cessation of phencyclidine treatment. Extracellular signaling-regulated kinase (ERK) was transiently activated in the amygdalae and hippocampi of saline-treated mice after conditioning. In the phencyclidinetreated mice, the basal level of ERK activation was elevated in the hippocampus, whereas the activation was impaired in the amygdala and hippocampus after conditioning. Exogenous N-methyl-D-aspartate (NMDA), glycine, and spermidine-induced ERK activation was not observed in slices of hippocampus and amygdala prepared from phencyclidine-treated mice. Repeated olanzapine (3 mg/kg/day p.o. for 7 days), but not haloperidol (1 mg/kg/day p.o. for 7 days), treatment reversed the impairment of associative learning and of fear conditioning-induced ERK activation in repeated phencyclidine-treated mice. Our findings suggest an involvement of abnormal ERK signaling via NMDA receptors in repeated phencyclidine treatment-induced cognitive dysfunction. Furthermore, our phencyclidine-treated mice would be a useful model for studying the effect of antipsychotics on cognitive dysfunction in schizophrenia.

Original languageEnglish
Pages (from-to)1765-1774
Number of pages10
JournalMolecular Pharmacology
Volume68
Issue number6
DOIs
Publication statusPublished - 01-12-2005
Externally publishedYes

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Phencyclidine
N-Methylaspartate
Phosphotransferases
Learning
Hippocampus
Amygdala
olanzapine
Fear
Withholding Treatment
Spermidine
Haloperidol
N-Methyl-D-Aspartate Receptors
Glycine
Antipsychotic Agents
Schizophrenia
Conditioning (Psychology)
Therapeutics

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Pharmacology

Cite this

Enomoto, Takeshi ; Noda, Yukihiro ; Mouri, Akihiro ; Shin, Eun Joo ; Wang, Dayong ; Murai, Rina ; Hotta, Kazuo ; Furukawa, Hiroshi ; Nitta, Atsumi ; Kim, Hyoung Chun ; Nabeshima, Toshitaka. / Long-lasting impairment of associative learning is correlated with a dysfunction of N-methyl-D-aspartate-extracellular signaling-regulated kinase signaling in mice after withdrawal from repeated administration of phencyclidine. In: Molecular Pharmacology. 2005 ; Vol. 68, No. 6. pp. 1765-1774.
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abstract = "In humans, the administration of phencyclidine causes schizophrenic-like symptoms that persist for several weeks after withdrawal from phencyclidine use. We demonstrated here that mice pretreated with phencyclidine (10 mg/kg/day s.c. for 14 days) showed an enduring impairment of associative in a Pavlovian fear conditioning 8 days after cessation of phencyclidine treatment. Extracellular signaling-regulated kinase (ERK) was transiently activated in the amygdalae and hippocampi of saline-treated mice after conditioning. In the phencyclidinetreated mice, the basal level of ERK activation was elevated in the hippocampus, whereas the activation was impaired in the amygdala and hippocampus after conditioning. Exogenous N-methyl-D-aspartate (NMDA), glycine, and spermidine-induced ERK activation was not observed in slices of hippocampus and amygdala prepared from phencyclidine-treated mice. Repeated olanzapine (3 mg/kg/day p.o. for 7 days), but not haloperidol (1 mg/kg/day p.o. for 7 days), treatment reversed the impairment of associative learning and of fear conditioning-induced ERK activation in repeated phencyclidine-treated mice. Our findings suggest an involvement of abnormal ERK signaling via NMDA receptors in repeated phencyclidine treatment-induced cognitive dysfunction. Furthermore, our phencyclidine-treated mice would be a useful model for studying the effect of antipsychotics on cognitive dysfunction in schizophrenia.",
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Long-lasting impairment of associative learning is correlated with a dysfunction of N-methyl-D-aspartate-extracellular signaling-regulated kinase signaling in mice after withdrawal from repeated administration of phencyclidine. / Enomoto, Takeshi; Noda, Yukihiro; Mouri, Akihiro; Shin, Eun Joo; Wang, Dayong; Murai, Rina; Hotta, Kazuo; Furukawa, Hiroshi; Nitta, Atsumi; Kim, Hyoung Chun; Nabeshima, Toshitaka.

In: Molecular Pharmacology, Vol. 68, No. 6, 01.12.2005, p. 1765-1774.

Research output: Contribution to journalArticle

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