1994
DOI: 10.1073/pnas.91.18.8537
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Morphine induces c-fos and junB in striatum and nucleus accumbens via D1 and N-methyl-D-aspartate receptors.

Abstract: Morphine induced the c-fos and junB immediate early genes in neurons of the medial and ventral striatn and nucleus accumbens. Induction of c-fos and junB mRNA and Fos protein was blocked by naloxone, the D1 dopamine (DA) receptor antagonists SCH23390 and SCH39166, and the N-methyl-D-aspartate (NMDA) glutamate receptor antagonist MK801. SCH23390 attenuated morphine induction of AP-1 binding in striatum, suggesting that c-fos andjunB contribute to AP-1 binding. SCH23390 and MK801 did not block morphine induction… Show more

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Cited by 169 publications
(92 citation statements)
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References 74 publications
(105 reference statements)
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“…The general pattern of immediate early gene (IEG) expression elicited by morphine in the present study (eg, c-fos induction primarily in the most dorsomedial portion of the CPu and cingulate cortex) is consistent with the existing literature (Liu et al, 1994;Garcia et al, 1995;Curran et al, 1996;Erdtmann-Vourliotis et al, 1999b;Frankel et al, 1999b; see Harlan and Garcia (1998) for review). Our results are also consistent with a recent report showing that morphine administration in a stressful environment induces greater c-fos expression in the dorsomedial CPu than morphine administration in a calm environment (Mayer et al, 2002).…”
Section: Morphine-induced C-fos Expression In the Striatopallidal Patsupporting
confidence: 90%
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“…The general pattern of immediate early gene (IEG) expression elicited by morphine in the present study (eg, c-fos induction primarily in the most dorsomedial portion of the CPu and cingulate cortex) is consistent with the existing literature (Liu et al, 1994;Garcia et al, 1995;Curran et al, 1996;Erdtmann-Vourliotis et al, 1999b;Frankel et al, 1999b; see Harlan and Garcia (1998) for review). Our results are also consistent with a recent report showing that morphine administration in a stressful environment induces greater c-fos expression in the dorsomedial CPu than morphine administration in a calm environment (Mayer et al, 2002).…”
Section: Morphine-induced C-fos Expression In the Striatopallidal Patsupporting
confidence: 90%
“…Studies examining the mechanisms underlying morphineevoked IEG expression in the CPu have established that coactivation of m opioid and dopamine receptors is required for IEG induction to occur (Liu et al, 1994;Sharp et al, 1995;Bontempi and Sharp, 1997;Frankel et al, 1999a). Morphine is thought to act at m opioid receptors to disinhibit mesolimbic dopamine neurons, resulting in increased dopamine release in the CPu (Matthews and German, 1984;Di Chiara and North, 1992;Johnson and North, 1992;Spanagel et al, 1992;Devine et al, 1993).…”
Section: Morphine-induced C-fos Expression In the Striatopallidal Patmentioning
confidence: 99%
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“…Recently, we have demonstrated a D 1 -receptor mediated increase in Fos-like immunoreactivity (FLI) in several limbic regions of the brain after burst-like electrical stimulation of the median forebrain bundle . Furthermore, the expression of c-fos and other immediate early genes has been found to be increased in DA target areas by several drugs that increase the extracellular concentration of DA, such as cocaine, amphetamine, and morphine (Graybiel et al 1990;Young et al 1991;Moratalla et al 1993;Liu et al 1994). Indeed, systemic administration of nicotine has also been shown to increase Fos-like immunoreactivity (FLI) in several brain regions, including some which receive their dopaminergic innervation from the ventral tegmental area (VTA) (Ren and Sagar 1992; Matta et al Pang et al 1993;Kiba and Jayaraman 1994).…”
mentioning
confidence: 99%