Cell Reports (Oct 2023)

An atlas of itch-associated neural dynamics in the mouse brain

  • Wen-Zhen Chen,
  • Ting-Yu Shen,
  • Meng Wang,
  • Lin Yuan,
  • Lin-Han Wang,
  • Wen-Qun Ding,
  • Xiao-Xue Shi,
  • Xiao-Fei Wang,
  • Bin-Shi Bo,
  • Zhi-Feng Liang,
  • Yan-Gang Sun

Journal volume & issue
Vol. 42, no. 10
p. 113304

Abstract

Read online

Summary: The itch-scratching cycle is mediated by neural dynamics in the brain. However, our understanding of the neural dynamics during this cycle remains limited. In this study, we examine the neural dynamics of 126 mouse brain areas by measuring the calcium signal using fiber photometry. We present numerous response patterns in the mouse brain during the itch-scratching cycle. Interestingly, we find that a group of brain areas exhibit activation only at the end of histamine-induced scratching behavior. Additionally, several brain areas exhibit transient activation at the onset of scratching induced by chloroquine. Both histamine- and chloroquine-induced itch evoke diverse response patterns across the mouse brain. In summary, our study provides a comprehensive dataset for the diverse activity pattern of mouse brain during the itch-scratching cycle, paving the way for further exploration into the neural mechanisms underlying the itch-scratching cycle.

Keywords