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While the mechanisms underlying incubation of cocaine seeking remain elusive, considerable evidence suggests that abstinence from cocaine promotes mesolimbic dopamine adaptations that contribute to exaggerated cocaine seeking. Consequently, preventing these dopamine adaptations may reduce incubation of cocaine seeking and thereby reduce the likelihood of relapse. In the present studies, we first examined if incubation of cocaine seeking was associated with aberrant dopamine transmission in the nucleus accumbens after seven days of abstinence from intermittent access to cocaine. Given the extensive evidence that hypocretins\/orexins regulate motivation for cocaine, we then examined to what extent hypocretin receptor 1 antagonism on the first day of abstinence prevented incubation of cocaine seeking and dopamine adaptations later in abstinence. Results indicated that abstinence from intermittent access to cocaine engendered robust incubation of cocaine seeking in both female and male rats. We also observed aberrant dopamine transmission, but only in rats that displayed incubation of cocaine seeking. Further, we showed that a single injection of the hypocretin receptor 1 antagonist, RTIOX-276, on the first day of abstinence prevented incubation of cocaine seeking and aberrant dopamine transmission. These findings suggest that hypocretin receptor 1 antagonism may serve as a viable therapeutic for reducing cocaine craving\/seeking, thus reducing the likelihood of relapse.<\/jats:p>","DOI":"10.1101\/2024.11.30.625912","type":"posted-content","created":{"date-parts":[[2024,12,1]],"date-time":"2024-12-01T15:55:11Z","timestamp":1733068511000},"source":"Crossref","is-referenced-by-count":4,"title":["Hypocretin Receptor 1 Blockade Early in Abstinence Prevents Incubation of Cocaine Seeking and Normalizes Dopamine Transmission"],"prefix":"10.64898","author":[{"given":"Philip J.","family":"Clark","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Volodar M.","family":"Migovich","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjay","family":"Das","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Xi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandhya","family":"Kortagere","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rodrigo A.","family":"Espa\u00f1a","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"54368","reference":[{"key":"2024120307253220000_2024.11.30.625912v1.1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1460-9568.2010.07114.x"},{"key":"2024120307253220000_2024.11.30.625912v1.2","doi-asserted-by":"publisher","DOI":"10.1038\/s44159-023-00167-y"},{"key":"2024120307253220000_2024.11.30.625912v1.3","doi-asserted-by":"publisher","DOI":"10.1038\/s41386-020-00879-2"},{"key":"2024120307253220000_2024.11.30.625912v1.4","doi-asserted-by":"crossref","unstructured":"Alonso IP , O\u2019Connor BM , Bryant KG , Mandalaywala RK , Espa\u00f1a RA (2022) Incubation of cocaine craving coincides with changes in dopamine terminal neurotransmission. 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