Forskare har identifierat en molekylär strömbrytare som begränsar kliande

10 maj 2026

Rapporterad av AI

Forskare har upptäckt en nervsignal som involverar molekylen TRPV4, vilken talar om för hjärnan när det räcker att klia sig för att få lindring. Experiment på möss visade att utan denna signal blir kliperioderna utdragna, även om den totala frekvensen minskar.

Upptäckten kommer från studier ledda av Roberta Gualdani vid universitetet i Louvain i Bryssel. Hennes team fann att TRPV4-kanaler i sensoriska neuroner bidrar till att aktivera en negativ återkopplingsmekanism i nervsystemet. Denna mekanism informerar ryggmärgen och hjärnan om att kliandet har gett tillfredsställelse, vilket får beteendet att upphöra.

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Scientific illustration showing intestinal tuft cells signaling the brain via acetylcholine, serotonin, and the vagus nerve to suppress appetite during parasitic infections.

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1 maj 2026 00:37

Forskare har identifierat en molekylär strömbrytare som begränsar kliande

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