alexa Itch-associated responses of afferent nerve innervating the murine skin: different effects of histamine and serotonin in ICR and ddY mice.


Journal of Clinical & Experimental Dermatology Research

Author(s): Maekawa T, Nojima H, Kuraishi Y

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Abstract To assess the itch-associated response of primary afferents innervating the murine skin in vivo, dose-response curves and time-courses for itch-scratching and cutaneous nerve firing responses to intradermal injections of pruritogens (histamine and serotonin) were compared in ICR and ddY mice. Serotonin increased the itch-scratch response and cutaneous nerve firing in either ICR or ddY mice. Histamine increased these two responses in ICR, but not ddY, mice. The dose-response curves and time-courses for serotonin- and histamine-induced nerve firing were similar to those for the itch-scratch response. The results suggest that cutaneous nerve firing evoked by peripherally given pruritogens includes the itch-associated response.
This article was published in Jpn J Pharmacol and referenced in Journal of Clinical & Experimental Dermatology Research

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