Role of nitric oxide in the development of tolerance and sensitization to behavioural effects of phencyclidine in mice

Yukihiro Noda, Kiyofumi Yamada, Yumiko Komori, Hisayoshi Sugihara, Hiroshi Furukawa, Toshitaka Nabeshima

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Abstract

1. To determine whether nitric oxide (NO) was involved in tolerance and sensitization to the effects of phencyclidine (PCP), we examined NO synthase activity and the number of NADPH-diaphorase (NADPH-d)-positive cells in discrete brain regions of saline-, acute PCP- and repeated PCP-treated mice. We also investigated the effects of a NO synthase inhibitor, N(G)-nitro-L-arginine methyl ester (L-NAME), on the behavioural changes induced by repeated PCP treatment in mice. 2. Acute PCP (1, 3, and 10 mg kg-1, s.c.) treatment induced dose-dependent hyperlocomotion, motor incoordination and stereotyped behaviours, consisting of sniffing, head movement and ataxia in mice. 3. In mice treated repeatedly with PCP (1, 3, and 10 mg kg-1 day-1), s.c., once a day for 14 days), the sniffing, head movement, ataxia and motor incoordination induced by PCP were attenuated (indicating the development of tolerance to these behaviours), whereas the hyperlocomotion induced by PCP was potentiated (indicating the development of sensitization to hyperlocomotion). The development of tolerance and sensitization to PCP-induced behaviours in the repeated PCP-treated mice was more marked at the dose of 10 mg kg-1 day-1) than at other doses. 4. NO synthase activity in the cerebral cortex and cerebellum, but not in the striatum and hippocampus, was significantly decreased by acute PCP (10 mg kg-1) treatment in comparison with saline treatment, and such changes in activity in the cerebral cortex and cerebellum were reversed by repeated PCP treatment (10 mg kg-1 day-1). 5. The number of neurones containing NADPH-d reactivity in the cerebral cortex, nucleus accumbens, and striatum of acute and repeated PCP-treated mice showed no change in comparison with saline-treated mice. 6. Tolerance to PCP (10 mg kg-1 day-1)-induced ataxia and motor incoordination was significantly attenuated by combined treatment with L-NAME (50 mg kg-1 day-1 i.p.). 7. Sensitization to PCP-induced hyperlocomotion was further enhanced by combined treatment with L-NAME (50 mg kg-1 day-1). However, N(G)-nitro-D-arginine methyl ester (D-NAME, 50 mg kg-1 day-1, i.p.), a less active enantiomer of L-NAME, had no effect, suggesting a stereospecific mechanism. 8. The PCP-induced behaviours in animals that had exhibited tolerance and sensitization to PCP (10 mg kg-1 day-1) were not influenced by acute L-NAME (5 and 50 mg kg-1, i.p.) or D-NAME (50 mg kg-1, i.p.) treatment. 9. These results suggest that NO may play an important role in the development, but not in the maintenance, of tolerance and sensitization to the effects of PCP in mice.

Original languageEnglish
Pages (from-to)1579-1585
Number of pages7
JournalBritish Journal of Pharmacology
Volume117
Issue number7
DOIs
Publication statusPublished - 01-01-1996
Externally publishedYes

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Phencyclidine
NG-Nitroarginine Methyl Ester
Nitric Oxide
Ataxia
Nitric Oxide Synthase
Cerebral Cortex
NADPH Dehydrogenase
Head Movements
Cerebellum
Stereotyped Behavior
Animal Behavior
Nucleus Accumbens
Hippocampus
Maintenance
Neurons
Brain

All Science Journal Classification (ASJC) codes

  • Pharmacology

Cite this

Noda, Yukihiro ; Yamada, Kiyofumi ; Komori, Yumiko ; Sugihara, Hisayoshi ; Furukawa, Hiroshi ; Nabeshima, Toshitaka. / Role of nitric oxide in the development of tolerance and sensitization to behavioural effects of phencyclidine in mice. In: British Journal of Pharmacology. 1996 ; Vol. 117, No. 7. pp. 1579-1585.
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Role of nitric oxide in the development of tolerance and sensitization to behavioural effects of phencyclidine in mice. / Noda, Yukihiro; Yamada, Kiyofumi; Komori, Yumiko; Sugihara, Hisayoshi; Furukawa, Hiroshi; Nabeshima, Toshitaka.

In: British Journal of Pharmacology, Vol. 117, No. 7, 01.01.1996, p. 1579-1585.

Research output: Contribution to journalArticle

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T1 - Role of nitric oxide in the development of tolerance and sensitization to behavioural effects of phencyclidine in mice

AU - Noda, Yukihiro

AU - Yamada, Kiyofumi

AU - Komori, Yumiko

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AU - Furukawa, Hiroshi

AU - Nabeshima, Toshitaka

PY - 1996/1/1

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N2 - 1. To determine whether nitric oxide (NO) was involved in tolerance and sensitization to the effects of phencyclidine (PCP), we examined NO synthase activity and the number of NADPH-diaphorase (NADPH-d)-positive cells in discrete brain regions of saline-, acute PCP- and repeated PCP-treated mice. We also investigated the effects of a NO synthase inhibitor, N(G)-nitro-L-arginine methyl ester (L-NAME), on the behavioural changes induced by repeated PCP treatment in mice. 2. Acute PCP (1, 3, and 10 mg kg-1, s.c.) treatment induced dose-dependent hyperlocomotion, motor incoordination and stereotyped behaviours, consisting of sniffing, head movement and ataxia in mice. 3. In mice treated repeatedly with PCP (1, 3, and 10 mg kg-1 day-1), s.c., once a day for 14 days), the sniffing, head movement, ataxia and motor incoordination induced by PCP were attenuated (indicating the development of tolerance to these behaviours), whereas the hyperlocomotion induced by PCP was potentiated (indicating the development of sensitization to hyperlocomotion). The development of tolerance and sensitization to PCP-induced behaviours in the repeated PCP-treated mice was more marked at the dose of 10 mg kg-1 day-1) than at other doses. 4. NO synthase activity in the cerebral cortex and cerebellum, but not in the striatum and hippocampus, was significantly decreased by acute PCP (10 mg kg-1) treatment in comparison with saline treatment, and such changes in activity in the cerebral cortex and cerebellum were reversed by repeated PCP treatment (10 mg kg-1 day-1). 5. The number of neurones containing NADPH-d reactivity in the cerebral cortex, nucleus accumbens, and striatum of acute and repeated PCP-treated mice showed no change in comparison with saline-treated mice. 6. Tolerance to PCP (10 mg kg-1 day-1)-induced ataxia and motor incoordination was significantly attenuated by combined treatment with L-NAME (50 mg kg-1 day-1 i.p.). 7. Sensitization to PCP-induced hyperlocomotion was further enhanced by combined treatment with L-NAME (50 mg kg-1 day-1). However, N(G)-nitro-D-arginine methyl ester (D-NAME, 50 mg kg-1 day-1, i.p.), a less active enantiomer of L-NAME, had no effect, suggesting a stereospecific mechanism. 8. The PCP-induced behaviours in animals that had exhibited tolerance and sensitization to PCP (10 mg kg-1 day-1) were not influenced by acute L-NAME (5 and 50 mg kg-1, i.p.) or D-NAME (50 mg kg-1, i.p.) treatment. 9. These results suggest that NO may play an important role in the development, but not in the maintenance, of tolerance and sensitization to the effects of PCP in mice.

AB - 1. To determine whether nitric oxide (NO) was involved in tolerance and sensitization to the effects of phencyclidine (PCP), we examined NO synthase activity and the number of NADPH-diaphorase (NADPH-d)-positive cells in discrete brain regions of saline-, acute PCP- and repeated PCP-treated mice. We also investigated the effects of a NO synthase inhibitor, N(G)-nitro-L-arginine methyl ester (L-NAME), on the behavioural changes induced by repeated PCP treatment in mice. 2. Acute PCP (1, 3, and 10 mg kg-1, s.c.) treatment induced dose-dependent hyperlocomotion, motor incoordination and stereotyped behaviours, consisting of sniffing, head movement and ataxia in mice. 3. In mice treated repeatedly with PCP (1, 3, and 10 mg kg-1 day-1), s.c., once a day for 14 days), the sniffing, head movement, ataxia and motor incoordination induced by PCP were attenuated (indicating the development of tolerance to these behaviours), whereas the hyperlocomotion induced by PCP was potentiated (indicating the development of sensitization to hyperlocomotion). The development of tolerance and sensitization to PCP-induced behaviours in the repeated PCP-treated mice was more marked at the dose of 10 mg kg-1 day-1) than at other doses. 4. NO synthase activity in the cerebral cortex and cerebellum, but not in the striatum and hippocampus, was significantly decreased by acute PCP (10 mg kg-1) treatment in comparison with saline treatment, and such changes in activity in the cerebral cortex and cerebellum were reversed by repeated PCP treatment (10 mg kg-1 day-1). 5. The number of neurones containing NADPH-d reactivity in the cerebral cortex, nucleus accumbens, and striatum of acute and repeated PCP-treated mice showed no change in comparison with saline-treated mice. 6. Tolerance to PCP (10 mg kg-1 day-1)-induced ataxia and motor incoordination was significantly attenuated by combined treatment with L-NAME (50 mg kg-1 day-1 i.p.). 7. Sensitization to PCP-induced hyperlocomotion was further enhanced by combined treatment with L-NAME (50 mg kg-1 day-1). However, N(G)-nitro-D-arginine methyl ester (D-NAME, 50 mg kg-1 day-1, i.p.), a less active enantiomer of L-NAME, had no effect, suggesting a stereospecific mechanism. 8. The PCP-induced behaviours in animals that had exhibited tolerance and sensitization to PCP (10 mg kg-1 day-1) were not influenced by acute L-NAME (5 and 50 mg kg-1, i.p.) or D-NAME (50 mg kg-1, i.p.) treatment. 9. These results suggest that NO may play an important role in the development, but not in the maintenance, of tolerance and sensitization to the effects of PCP in mice.

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