{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T22:43:30Z","timestamp":1780094610419,"version":"3.54.0"},"reference-count":56,"publisher":"Oxford University Press (OUP)","issue":"9","license":[{"start":{"date-parts":[[2019,5,24]],"date-time":"2019-05-24T00:00:00Z","timestamp":1558656000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81271472"],"award-info":[{"award-number":["81271472"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"Natural Science Foundation of China","doi-asserted-by":"publisher","award":["31571094"],"award-info":[{"award-number":["31571094"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The hallmark characteristics of the murine model of drug addiction include the escalation of cocaine consumption and compulsive punishment-resistant drug seeking. In this study, we evaluated the motivation for drug seeking in cocaine self-administering rats exposed to an escalated dosing regimen that endeavored to mimic the characteristic of escalating drug intake in human addicts. Tropisetron is a 5-HT3 receptor antagonist and \u03b17-nicotinic receptor partial agonist. Utilizing rats trained on the escalated-dosing regimen, we examined the effects of tropisetron on control over compulsive drug-seeking behavior that was defined as footshock-resistant lever pressing.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Rats were trained to self-administer cocaine with incremental-infusion doses (from 0.6 to 2.4 mg\/kg\/infusion) across training sessions (3 h\/session) or with a long-access paradigm (i.e., 0.6 mg\/kg\/infusion, 6 h\/d training session). The drug-seeking motivations of 2 groups were estimated by the patterns of drug intake and progressive-ratio schedule. The compulsivity for drug seeking of the group with an escalated dose was further evaluated using the footshock-associated seeking-taking chain task.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The rats trained on the dose-escalated protocol achieved the same levels of motivated drug seeking as those subjected to a long-access paradigm, as indicated by cocaine intake per training session and breakpoints on a progressive ratio schedule. Tropisetron attenuated compulsive behavior of rats when pressing of the seeking lever potentially led to footshock. Intriguingly, tropisetron did not change the motivation to seek cocaine when footshock was absent. Tropisetron had no effect on locomotor activities or saccharin self-administration.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>These results demonstrate that tropisetron restored control over compulsive cocaine seeking, and they indicate that 5-HT3\/\u03b17-nicotinic receptors may be potential therapeutic targets for relieving compulsive drug seeking.<\/jats:p><\/jats:sec>","DOI":"10.1093\/ijnp\/pyz023","type":"journal-article","created":{"date-parts":[[2019,5,23]],"date-time":"2019-05-23T11:21:05Z","timestamp":1558610465000},"page":"574-584","source":"Crossref","is-referenced-by-count":13,"title":["Tropisetron Facilitates Footshock Suppression of Compulsive Cocaine Seeking"],"prefix":"10.1093","volume":"22","author":[{"given":"Yue-Qing","family":"Zhou","sequence":"first","affiliation":[{"name":"Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 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