The effects of acute phencyclidine treatment on neuropeptide Y (NPY) neuronal system in the rat arcuate nucleus studied by immunocytochemistry and in situ hybridization |
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Authors: | K Fukui Y Kawashima H Iizumi H Utsumi T Nakajima |
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Institution: | (1) Present address: Department of Psychiatry, Kyoto Prefectural University of Medicine, Kyoto, Japan |
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Abstract: | Summary Phencyclidine (PCP) is a dissociative drug and an antagonist of N-methyl-D-aspartate (NMDA) receptor. The effects of PCP treatment on neuropeptide Y (NPY) system in the arcuate nucleus of the rat hypothalamus were examined both by immunocytochemistry and in situ hybridization. In acute PCP-treated rats, the NPY-immunoreactive perikarya appeared in the arcuate nucleus but no perikarya were detected in controls, without colchicine pretreatment. The signals of NPY mRNA by in situ hybridization increased in the PCP-treated rats than those of controls. These results suggest that the NPY system in the arcuate nucleus might be partly controlled by glutamatergic neurons. |
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Keywords: | Phencyclidine neuropeptide Y arcuate nucleus rat brain immunocytochemistry in situ hybridization |
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