Title : Role of NR2B-containing N-methyl-D-aspartate receptors in haloperidol-induced c-Fos expression in the striatum and nucleus accumbens.

Pub. Date : 2003

PMID : 14622917






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1 Role of NR2B-containing N-methyl-D-aspartate receptors in haloperidol-induced c-Fos expression in the striatum and nucleus accumbens. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
2 Administration of haloperidol in rats leads to a robust induction of immediate-early genes including c-Fos throughout the striatum, which is significantly attenuated by pretreatment with the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist, MK-801. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
3 Furthermore, to determine whether NMDA receptor subtype dependence of haloperidol-induced c-Fos expression is unique to the binding profile of haloperidol or whether it is a property of D2 receptor antagonism, the selective D2/D3 dopamine receptor antagonist, raclopride, was also used. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
4 Furthermore, the pattern of attenuation of raclopride-induced c-Fos expression following Ro 25-6981 pretreatment was similar to that of haloperidol-induced c-Fos expression, indicating that the NMDA receptor subtype dependence of haloperidol-induced c-Fos expression is a property of D2 antagonism. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
5 Furthermore, the pattern of attenuation of raclopride-induced c-Fos expression following Ro 25-6981 pretreatment was similar to that of haloperidol-induced c-Fos expression, indicating that the NMDA receptor subtype dependence of haloperidol-induced c-Fos expression is a property of D2 antagonism. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
6 The results indicate that NR2B-containing NMDA receptors are mainly involved in mediating haloperidol-induced c-Fos expression in the medial or "limbic" striatum, and suggest that NR2A-containing NMDA receptors may preferentially mediate haloperidol induced c-Fos expression in the lateral or "motor" striatum. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
7 The results indicate that NR2B-containing NMDA receptors are mainly involved in mediating haloperidol-induced c-Fos expression in the medial or "limbic" striatum, and suggest that NR2A-containing NMDA receptors may preferentially mediate haloperidol induced c-Fos expression in the lateral or "motor" striatum. Haloperidol Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus