Diet-induced inflammation in the anterior paraventricular thalamus induces compulsive sucrose-seeking

Nat Neurosci. 2022 Aug;25(8):1009-1013. doi: 10.1038/s41593-022-01129-y. Epub 2022 Aug 1.

Abstract

Overconsumption of palatable food may initiate neuroadaptive responses in brain reward circuitry that may contribute to eating disorders. Here we report that high-fat diet (HFD) consumption impedes threat-cue-induced suppression of sucrose-seeking in mice. This compulsive sucrose-seeking was due to enhanced cue-triggered neuronal activity in the anterior paraventricular thalamus (aPVT) resulting from HFD-induced microglia activation. Thus, metabolic inflammation in the aPVT produces an adaptive response to threat cues, leading to compulsive food-seeking.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anterior Thalamic Nuclei*
  • Compulsive Behavior
  • Cues
  • Diet, High-Fat / adverse effects
  • Inflammation / chemically induced
  • Mice
  • Reward
  • Sucrose* / metabolism

Substances

  • Sucrose