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Previously, using a lateral fluid percussion model (LFP) (an open-head injury model) to generate a single mild to moderate traumatic brain injury (TBI) we showed that TBI produces escalation in alcohol drinking, that alcohol exposure negatively impacts TBI outcomes, and that the endocannabinoid degradation inhibitor (JZL184) confers significant protection from behavioral and neuropathological outcomes in male rodents. In the present study, we used a weight drop model (a closed-head injury model) to produce repeated mild TBI (rmTBI; three TBIs separated by 24 hours) in male and female rats to examine the sex-specific effects on anxiety-like behavior and alcohol consumption, and whether systemic treatment with JZL184 would reverse TBI effects on those behaviors. In two separate studies, adult male and female Wistar rats were subjected to rmTBI or sham procedure using the weight drop model. Physiological measures of injury severity were collected from all animals. Animals in both studies were allowed to consume alcohol using an intermittent 2-bottle choice procedure (12 pre-TBI sessions and 12 post-TBI sessions). Neurological severity and neurobehavioral scores (NSS and NBS, respectively) were tested 24 hours after the final injury. Anxiety-like behavior was tested at 37\u201338 days post-injury in Study 1-, and 6-8-days post-injury in Study 2. Our results show that females exhibited reduced respiratory rates relative to males with no significant differences between Sham and rmTBI, no effect of rmTBI or sex on righting reflex, and increased neurological deficits in rmTBI groups in both studies. In Study 1, rmTBI increased alcohol consumption in female but not male rats. Male rats consistently exhibited higher levels of anxiety-like behavior than females. The rmTBI did not affect anxiety-like behavior 37\u201338 days post-injury. In Study 2, rmTBI once again increased alcohol consumption in female but not male rats, and repeated systemic treatment with JZL184 did not affect alcohol consumption. Also in Study 2, rmTBI increased anxiety-like behavior in males but not females and repeated systemic treatment with JZL184 produced an unexpected increase in anxiety-like behavior 6-8 days post-injury. In summary, rmTBI increased alcohol consumption in female rats, systemic JZL184 treatment did not alter alcohol consumption, and both rmTBI and systemic JZL184 treatment increased anxiety-like behavior 6-8 days post-injury in males but not females, highlighting robust sex differences in rmTBI effects.<\/jats:p>","DOI":"10.1089\/neu.2023.0088","type":"journal-article","created":{"date-parts":[[2023,7,28]],"date-time":"2023-07-28T05:12:47Z","timestamp":1690521167000},"page":"2427-2441","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["Repeated Mild Traumatic Brain Injury and JZL184 Produce Sex-Specific Increases in Anxiety-Like Behavior and Alcohol Consumption in Wistar Rats"],"prefix":"10.1177","volume":"40","author":[{"given":"Alejandra","family":"Jacotte-Simancas","sequence":"first","affiliation":[{"name":"Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."},{"name":"Alcohol and Drug of Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia E.","family":"Molina","sequence":"additional","affiliation":[{"name":"Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."},{"name":"Alcohol and Drug of Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas W.","family":"Gilpin","sequence":"additional","affiliation":[{"name":"Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."},{"name":"Alcohol and Drug of Abuse Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA."},{"name":"Southeast Louisiana VA Healthcare System, New Orleans, Louisiana, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2023,11,9]]},"reference":[{"key":"e_1_3_5_2_2","first-page":"10","article-title":"Estimating the global incidence of traumatic brain injury","author":"Dewan MC","year":"2018","unstructured":"Dewan MC, , Rattani A, , Gupta S, et al. 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