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- W4291010307 abstract "Abstract Food is a powerful natural reinforcer that guides feeding decisions. The vagus nerve conveys internal sensory information from the gut to the brain about nutritional value; however, the cellular and molecular basis of macronutrient-specific reward circuits are poorly understood. Here, we monitor in vivo calcium dynamics to provide direct evidence of independent vagal sensing pathways for detection of dietary fats and sugars. Using activity-dependent genetic capture of nutrient-specific vagal neurons activated in response gut infusions, we demonstrate the existence of separate hard-wired reward circuits for fat and sugar that are necessary and sufficient for nutrient-specific reinforcement. Even when controlling for calories, combined activation of fat and sugar circuits increases overeating compared to fat or sugar alone. This work provides new insight on the complex sensory circuitry that mediates motivated behavior and suggests that a subconscious internal drive to consume obesogenic diets (e.g., those high in both fat and sugar) may impede conscious dieting efforts." @default.
- W4291010307 created "2022-08-13" @default.
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- W4291010307 date "2022-08-11" @default.
- W4291010307 modified "2023-10-17" @default.
- W4291010307 title "Labeled lines for fat and sugar reward combine to promote overeating" @default.
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- W4291010307 doi "https://doi.org/10.1101/2022.08.09.503218" @default.
- W4291010307 hasPublicationYear "2022" @default.
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