TRPV4-Studie identifiziert neuronalen „Stopp-des-Kratzens“-Mechanismus bei chronischem Juckreiz
Eine Mausstudie identifizierte **TRPV4** als Teil eines neuronalen Rückkopplungssystems, das dem Gehirn signalisiert, wann Kratzen ausreichend war. Die Ergebnisse deuten darauf hin, dass eine breite Blockade von TRPV4 möglicherweise keine geeignete Lösung für chronischen Juckreiz ist.
Scientists have identified a key molecular and neural mechanism behind the built-in braking system that tells the brain when to stop scratching an itch.
Researchers at the University of Louvain in Brussels revealed an unexpected role for TRPV4 in mechanically evoked itch.
To address this question with precision, the team engineered a genetic mouse model, selectively deleting TRPV4 only in sensory neurons.
When the team induced a chronic itch condition resembling atopic dermatitis, mice lacking neuronal TRPV4 scratched less frequently, but each scratching bout lasted much longer than normal.
The findings suggest that TRPV4's role in itch is more complex than previously thought.
Chronic itch affects millions of people with conditions like eczema, psoriasis, and kidney disease, yet effective treatments remain limited.