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• W3201305916 abstract "Abstract Schizophrenia is associated with three main categories of symptoms; positive, negative and cognitive. Of these, only the positive symptoms respond well to treatment with antipsychotics. Due to the lack of effect of antipsychotics on negative symptoms, it has been suggested that while the positive symptoms are related to a hyperdopaminergic state in associative striatum, the negative symptoms may be a result of a reduced dopamine (DA) activity in the nucleus accumbens (nAc). Drug abuse is common in schizophrenia, supposedly alleviating negative symptomatology. Some, but not all, drugs aggravate psychosis, tentatively due to differential effects on DA activity in striatal regions. Here this hypothesis was tested in rats by using a double-probe microdialysis technique to simultaneously assess DA release in the nAc and associative striatum (dorsomedial striatum; DMS) following administration of the psychosis-generating substances amphetamine (0.5 mg/kg), cocaine (15 mg/kg) and Δ 9 -tetrahydrocannabinol (THC, 3 mg/kg), and the generally non-psychosis-generating substances ethanol (2.5 g/kg), nicotine (0.36 mg/kg) and morphine (5 mg/kg). The data show that amphetamine and cocaine produce identical DA elevations both in the nAc and DMS, whereas nicotine increases DA in nAc only. Ethanol and morphine both increased DMS DA, but weaker and in a qualitatively different way than in nAc, suggesting that the manner in which DA is increased might be important to the triggering of psychosis. THC elevated DA in neither region, indicating that the pro-psychotic effects of THC are not related to DA release. We conclude that psychosis-generating substances affect striatal DA release differently than non-psychosis-generating substances." @default.
• W3201305916 created "2021-09-27" @default.
• W3201305916 creator A5011263811 @default.
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• W3201305916 creator A5089963466 @default.
• W3201305916 date "2021-09-13" @default.
• W3201305916 modified "2023-10-14" @default.
• W3201305916 title "Differential dopamine release by psychosis-generating and non-psychosis-generating addictive substances in the nucleus accumbens and dorsomedial striatum" @default.
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• W3201305916 doi "https://doi.org/10.1038/s41398-021-01589-z" @default.
• W3201305916 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8438030" @default.
• W3201305916 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34518523" @default.
• W3201305916 hasPublicationYear "2021" @default.
• W3201305916 type Work @default.
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• W3201305916 hasAuthorship W3201305916A5025943316 @default.
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