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Substance P Induction of Itch-Associated Response Mediated by Cutaneous NK1 Tachykinin Receptors in Mice

Andoh, Tsugunobu, Nagasawa, Tetsuro, Satoh, Masamichi, Kuraishi, Yasushi·1998·The Journal of Pharmacology and Experimental Therapeutics

Abstract

Our experiments were conducted to determine whether substance P (SP) would elicit an itch sensation mediated by mast cells in mice. An intradermal injection of SP (10-135 microgram site-1) into the rostral back of the ICR mouse dose-dependently produced scratching of the injected site. The SP- (135 microgram site-1 = 100 nmol site-1) induced scratching was inhibited by capsaicin (repeated administration) and naloxone; features being similar to itch in humans. SP elicited scratching in mast cell-deficient (WBB6F1 W/Wv) mice as well as control (+/+) mice. Pretreatment with compound 48/80 produced similar degrees of inhibition of SP-induced scratching in mast cell-deficient mice as well as control +/+ and ICR mice. Intradermal injections of the NK1 receptor agonist GR73632 produced dose-dependent scratching, while the NK2 agonist GR64349 and the NK3 agonist senktide were without effects. SP-induced scratching was inhibited by the NK1 receptor antagonists spantide and L-668,169, but not by the NK2 antagonist L-659,877. The results suggest that scratching of the mouse induced by an i.d. injection of SP is itch-associated response. The SP action may be mediated at least partly by cutaneous NK1 receptors, and mast cells may not be key factors in SP-induced itching.

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Metadata

Authors
Andoh, T., Nagasawa, T., Satoh, M., & Kuraishi, Y.
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
1998-09
Volume
286
Issue
3
Pages
1140-1145
ISSN
0022-3565 (ISSN-L)
OpenAlex
W1915108447
Cited by
233
References
1
FWCI
3.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Substance P Induction of Itch-Associated Response Mediated by Cutaneous NK1 Tachykinin Receptors in Mice. https://app.cochat.ai/papers/10.1016/s0022-3565(24)37703-1
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Andoh, T., Nagasawa, T., Satoh, M., & Kuraishi, Y. (1998). Substance P Induction of Itch-Associated Response Mediated by Cutaneous NK1 Tachykinin Receptors in Mice. The Journal of Pharmacology and Experimental Therapeutics. https://doi.org/10.1016/s0022-3565(24)37703-1

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