Piezo2(+) mechanosensory neurons and glial cells initiate resident macrophage activation in postoperative ileus.

Piezo2-expressing neurons and glial cells initiate early macrophage activation, driving inflammation in postoperative ileus in mice.

• Why it matters: Understanding the initial triggers of macrophage activation in POI is crucial for developing targeted therapies to reduce postoperative complications and improve recovery.
• What they did: The study used intestinal manipulation in mice, single-nucleus RNA sequencing, and genetic and pharmacological interventions to investigate the role of Piezo2 in early cellular responses.
• The result: Blocking Piezo2 or its downstream signals reduced inflammation, revealing Piezo2 as a key early sensor that amplifies gut inflammation and offers potential therapeutic targets.