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- Fiona E Holmes, Penny Vanderplank, and David Wynick.
- Schools of Physiology and Pharmacology and Clinical Sciences, University of Bristol, Bristol, BS8 1TD, United Kingdom.
- Mol Pain. 2012 Jan 1;8:87.
BackgroundGalanin is a key modulator of nociception, and it is also required for the developmental survival of a subset of C-fibre sensory neurons which are critical to the mediation of neuropathic and inflammatory pain. However, the potential modulatory roles played by galanin, or the galanin-dependent neurons, in pruritoceptive mechanisms underlying the sensation of itch have not been investigated.FindingsHere we report that mice carrying a loss-of-function mutation in the galanin gene (Gal-KO) show no differences in spontaneous behavioural itch responses compared to wild-type (WT) controls. Similarly, the responses to a range of pruritogens are not significantly different between the two genotypes.ConclusionsThese results suggest that neither galanin expression, nor the galanin-dependent subpopulation of sensory neurons is required for itch-related behaviours.
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