Cutaneous neuroimmune crosstalk in pruritus

Trends Mol Med. 2022 Jun;28(6):452-462. doi: 10.1016/j.molmed.2022.03.005. Epub 2022 Apr 11.

Abstract

The underlying mechanisms of chronic pruritus (CP), which is often very debilitating for patients, are still not well understood. Over the past few years, peripheral and central mechanisms involving different classes of pruriceptive and nociceptive neuron (e.g., C- and Aδ-fibers), immune cells (e.g., eosinophils, basophils, Th1, Th2, and mast cells) and epithelial cells (e.g., keratinocytes) have been investigated. Based on these, numerous promising target-specific therapies are under development. In this review, we highlight the cells, key mediators, and receptors involved in itch perception and CP, and conclude by summarizing the therapies developed for these conditions.

Keywords: chronic prurigo; chronic pruritus; itch; neuroimmune crosstalk; pruriception; scratch.

Publication types

  • Review

MeSH terms

  • Basophils
  • Humans
  • Keratinocytes
  • Pruritus* / etiology
  • Skin*