{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,22]],"date-time":"2026-02-22T04:48:31Z","timestamp":1771735711777,"version":"3.50.1"},"reference-count":76,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2008,2,20]],"date-time":"2008-02-20T00:00:00Z","timestamp":1203465600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Synapse"],"published-print":{"date-parts":[[2008,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Cytochrome P450 2E1 (CYP2E1) has been detected in brain regions which are of relevance for the pathophysiology of Parkinson's disease, such as the substantia nigra (SN). Furthermore, CYP2E1 is known to generate reactive oxygen species (ROS), toxic molecules which have been implicated in the pathogenesis of the disease. We have previously reported that CYP2E1 inhibition increases extracellular dopamine (DA) in the SN. The aims of the present study were by using in vivo microdialysis in rat, to elucidate the mechanisms responsible for the increase in extracellular DA induced by CYP2E1 inhibition and to explore whether ROS is produced in the SN, both with and without the presence of an exogenous CYP2E1 substrate. The effect of inhibition of CYP2E1 by phenylethyl isothiocyanate (100 mg\/kg) on extracellular DA in the SN was unaltered following pretreatment with \u03b3\u2010butyrolactone and GBR\u201012909, drugs that inhibit firing of DA neurons and DA re\u2010uptake, respectively. Preadministration of tetrodotoxin or reserpine, however, abolished the effect of CYP2E1 inhibition. Administration of isoflurane, an anesthetic which is metabolized by CYP2E1, increased the production of <jats:sup>\u2022<\/jats:sup>OH in the SN, as measured by the transformation of 4\u2010hydroxybenzoic acid to 3,4\u2010dihydroxybenzoic acid during local perfusion compared with animals given other anesthetics. The results support the notion that CYP2E1 is located near or in the same compartment in the SN as stored DA, tentatively the endoplasmatic reticulum, and that the enzyme activity might modulate the amount of DA that is available for release. Furthermore, our findings indicate that the production of ROS can be stimulated by CYP2E1 substrates. Synapse 62:379\u2013388, 2008. \u00a9 2008 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/syn.20505","type":"journal-article","created":{"date-parts":[[2008,2,20]],"date-time":"2008-02-20T17:03:54Z","timestamp":1203527034000},"page":"379-388","source":"Crossref","is-referenced-by-count":38,"title":["Cytochrome P450 2E1 in the substantia nigra: Relevance for dopaminergic neurotransmission and free radical production"],"prefix":"10.1002","volume":"62","author":[{"given":"H. 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