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- W2887684804 abstract "Abstract Objective Research has highlighted the importance of reward‐based processes in binge eating (BE). However, both increased and decreased activation have been observed in reward related brain regions for BE. Differences may be similar to addiction research, where the reward system is initially hyper‐responsive at early stages of use, but becomes hypo‐responsive with prolonged drug/alcohol use. This study was the first to examine differences in reward system responsivity at early versus chronic BE stages. Method Using an animal model, Sprague–Dawley female rats were identified as BE prone (BEP) or BE resistant (BER) and randomly assigned to an early or chronic stage group. Neural activation (via Fos protein) was quantified in the nucleus accumbens core (NAC) and shell (NAS). Results Early stage BEP rats had the highest levels of Fos expression of all of the study groups. By contrast, chronic stage BEP rats exhibited decreased activation in the NAS and NAC that was similar to the activation in chronic stage BER rats. Discussion Findings are significant in suggesting hyper‐neural activation to reward in the early stages of BE and decreased activation in later stages of BE. Additional studies are needed to elucidate how these differences may impact risk for and maintenance of BE." @default.
- W2887684804 created "2018-08-22" @default.
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- W2887684804 date "2018-07-29" @default.
- W2887684804 modified "2023-10-14" @default.
- W2887684804 title "Exploring reward system responsivity in the nucleus accumbens across chronicity of binge eating in female rats" @default.
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- W2887684804 doi "https://doi.org/10.1002/eat.22895" @default.
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