{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T22:31:04Z","timestamp":1772231464589,"version":"3.50.1"},"reference-count":40,"publisher":"Society for Neuroscience","issue":"33","license":[{"start":{"date-parts":[[2008,2,15]],"date-time":"2008-02-15T00:00:00Z","timestamp":1203033600000},"content-version":"vor","delay-in-days":184,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Neurosci."],"published-print":{"date-parts":[[2007,8,15]]},"abstract":"<jats:p>\n                    In animals and humans, vulnerability to drug abuse varies among individuals. Animals that display high activity levels in a novel environment are more likely to self-administer psychostimulant drugs, including nicotine, cocaine, amphetamine, and morphine. Recent reports from behavioral studies indicate that nicotinic acetylcholine receptor (nAChR) activity contributes to the rewarding effects of several different addictive drugs. Thus, we hypothesized that differences in nAChR activity may contribute to the predisposition to drug self-administration. After screening of adult rats (&gt;60 d postnatal) for the behavioral response to a novel environment, electrophysiological measures of nAChR function were conducted in brain slices that included the mesoaccumbens dopamine neurons of the ventral tegmental area (VTA). We found a positive correlation between the response to novelty and nAChR function in each assay conducted, including nAChR modulation of glutamatergic and GABAergic synaptic inputs to VTA dopamine neurons, as well as somatic nAChR responses of VTA neurons. The response to novelty and sensitivity to addictive drugs are positively correlated with the hormonal response to stress. Consistent with this observation, we found enhanced nAChR responses\n                    <jats:italic>in vitro<\/jats:italic>\n                    after a 48 h corticosterone treatment and\n                    <jats:italic>in vivo<\/jats:italic>\n                    after 48 h of repeated stress. Each of these effects was inhibited by RU486 (11\u03b2-[\n                    <jats:italic>p<\/jats:italic>\n                    -(dimethylamino)phenyl]-17\u03b2-hydroxy-17-(1-propynyl)estra-4,9-dien-3-one) pretreatment, suggesting a steroid hormone receptor-dependent process. These findings suggest that differences in nAChR function within the mesoaccumbens dopamine system may contribute to individual differences in drug abuse vulnerability and that these are likely attributable to differences in stress hormone levels.\n                  <\/jats:p>","DOI":"10.1523\/jneurosci.2017-06.2007","type":"journal-article","created":{"date-parts":[[2007,8,15]],"date-time":"2007-08-15T12:53:00Z","timestamp":1187182380000},"page":"8771-8778","source":"Crossref","is-referenced-by-count":34,"title":["Enhanced Nicotinic Receptor Function and Drug Abuse Vulnerability"],"prefix":"10.1523","volume":"27","author":[{"given":"Zara M.","family":"Fagen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Mitchum","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Vezina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel S.","family":"McGehee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"393","published-online":{"date-parts":[[2007,8,15]]},"reference":[{"key":"2023041303265799000_27.33.8771.1","doi-asserted-by":"publisher","DOI":"10.1016\/S0028-3908(00)00157-X"},{"key":"2023041303265799000_27.33.8771.2","doi-asserted-by":"crossref","first-page":"714","DOI":"10.1523\/JNEUROSCI.16-02-00714.1996","article-title":"Modulation of dopamine efflux in the nucleus accumbens after cholinergic stimulation of the ventral tegmental area in intact, pedunculopontine tegmental nucleus-lesioned, and laterodorsal tegmental nucleus-lesioned rats","volume":"16","author":"Blaha","year":"1996","journal-title":"J Neurosci"},{"key":"2023041303265799000_27.33.8771.3","doi-asserted-by":"crossref","first-page":"1819","DOI":"10.1523\/JNEUROSCI.21-06-01819.2001","article-title":"Chronic exposure to nicotine upregulates the human \u03b14\u03b22 nicotinic acetylcholine receptor function","volume":"21","author":"Buisson","year":"2001","journal-title":"J Neurosci"},{"key":"2023041303265799000_27.33.8771.4","doi-asserted-by":"publisher","DOI":"10.1016\/0006-8993(91)90661-E"},{"key":"2023041303265799000_27.33.8771.5","doi-asserted-by":"publisher","DOI":"10.1038\/sj.mp.4001284"},{"key":"2023041303265799000_27.33.8771.6","doi-asserted-by":"crossref","first-page":"1401","DOI":"10.1016\/S0022-3565(24)36712-6","article-title":"Glucocorticoids and behavioral effects of psychostimulants. 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