Modification of inherent and drug-induced dopaminergic activity after exposure to benzo(alpha)pyrene

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dc.contributor.authorKonstandi, M.en
dc.contributor.authorHarkitis, P.en
dc.contributor.authorThermos, K.en
dc.contributor.authorOgren, S. O.en
dc.contributor.authorJohnson, E. O.en
dc.contributor.authorTzimas, P.en
dc.contributor.authorMarselos, M.en
dc.date.accessioned2015-11-24T19:04:11Z
dc.date.available2015-11-24T19:04:11Z
dc.identifier.issn0161-813X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/19993
dc.rightsDefault Licence-
dc.subject3,4-Dihydroxyphenylacetic Acid/metabolismen
dc.subjectAnalysis of Varianceen
dc.subjectAnimalsen
dc.subjectBenzo(a)pyrene/*administration & dosageen
dc.subjectBrain/*drug effects/metabolismen
dc.subjectBrain Chemistry/*drug effectsen
dc.subjectBromocriptine/administration & dosageen
dc.subjectDopamine/*metabolismen
dc.subjectDopamine Agents/*administration & dosageen
dc.subjectDrug Interactionsen
dc.subjectHomovanillic Acid/metabolismen
dc.subjectMaleen
dc.subjectRadioligand Assay/methodsen
dc.subjectRatsen
dc.subjectRats, Wistaren
dc.subjectSulpiride/administration & dosageen
dc.titleModification of inherent and drug-induced dopaminergic activity after exposure to benzo(alpha)pyreneen
heal.abstractThe aim of this study was to investigate the effect of benzo(alpha)pyrene (B(alpha)P), a representative polycyclic aromatic hydrocarbon (PAH), on dopaminergic activity in brain. (B(alpha)P) altered dopaminergic activity in discrete regions of the rat brain, including the hippocampus, hypothalamus, caudate putamen and nucleus accumbens. Specifically, B(alpha)P increased DA levels in the hippocampus and DA turnover in the caudate putamen. In addition, B(alpha)P suppressed DA levels in the caudate putamen and DA turnover in the nucleus accumbens. B(alpha)P also altered the effect of several dopaminergic agents, L-DOPA, sulpiride and bromocriptine, on DA activity. In particular, B(alpha)P enhanced the L-DOPA-induced increase in the DA turnover ratio in the caudate putamen and increased DA levels in the nucleus accumbens. B(alpha)P also reversed the sulpiride-induced increase of DA turnover in the nucleus accumbens and the bromocriptine-induced increase of DA turnover in the hippocampus. In addition, DA turnover was increased by B(alpha)P in the nucleus accumbens and caudate putamen and DA levels were suppressed in the nucleus accumbens of bromocriptine treated rats, though the drug alone had no effect. These changes indicate that exposure to B(alpha)P and related compounds may affect dopaminergic function in discrete brain regions that are implicated in cognitive functions, psychosis, depression and Parkinson's disease, and may possibly interfere with their pharmacological intervention.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primary10.1016/j.neuro.2007.04.007-
heal.identifier.secondaryhttp://www.ncbi.nlm.nih.gov/pubmed/17570529-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0161813X07000757/1-s2.0-S0161813X07000757-main.pdf?_tid=b32cdc4c6b35051495986eceb498c036&acdnat=1334047709_240d9a0320df1c0f8a45bcba64e208d2-
heal.journalNameNeurotoxicologyen
heal.journalTypepeer-reviewed-
heal.languageen-
heal.publicationDate2007-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικήςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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