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- W2000442939 abstract "This study examined the effects of corticotropin-releasing factor (CRF) on the in vitro release of methionine-enkephalin (Met-enkephalin) and dynorphin in neostriatal slices taken from rats with unilateral 6-hydroxydopamine (6-OHDA)-induced lesions of the nigrostriatal DA pathway. In neostriatal slices from control saline-infused animals and in those from the contralateral hemisphere of 6-OHDA-lesioned animals, CRF (10 −10 M) administered as a 90-min pulse exerted potent stimulatory effects on both Met-enkephalin and dynorphin release. In the neostriatal slices of 6-OHDA-lesioned striata, both the basal release and tissue content of Met-enkephalin were significantly ( P < 0.01) higher (2-fold) than those of control animals and the contralateral hemisphere of 6-OHDA-lesioned animals; however, neither the basal release nor the tissue content of dynorphin in 6-OHDA-lesioned striata was significantly different from control striata. In response to CRF (10 −10 M) the release of both Met-enkephalin and dynorphin were significantly diminished in slices of 6-OHDA-lesioned striata. These data support previous studies suggesting that nigrostriatal DA itself may exert a tonic inhibitory action on the activity of striatal Met-enkephalin neurones; however, DA may not have the same influence on striatal dynorphin neurons. However, the results of this study demonstrate that the action of CRF on Met-enkephalin as well as dynorphin release from the rat neostriatum is DA dependent. The data suggest that CRF receptors in the rat neostriatum may be localized on nigrostriatal/nigropallidal DA terminals/collaterals." @default.
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- W2000442939 date "1990-08-01" @default.
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- W2000442939 title "Nigrostriatal dopamine mediates the stimulatory effects of corticotropin releasing factor on methionine-enkephalin and dynorphin release from the rat neostriatum" @default.
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- W2000442939 doi "https://doi.org/10.1016/0006-8993(90)90268-g" @default.
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