Antipruritic Effect of Cold-induced and Transient Receptor Potential-agonist-induced Counter-irritation on Histaminergic Itch in Humans
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Antipruritic Effect of Cold-induced and Transient Receptor Potential-agonist-induced Counter-irritation on Histaminergic Itch in Humans. / Andersen, Hjalte H.; Melholt, Camilla; Hilborg, Sigurd D.; Jerwiarz, Anne; Randers, Amalie; Simoni, Amalie; Elberling, Jesper; Arendt-Nielsen, Lars.
I: Acta Dermato-Venereologica, Bind 97, Nr. 1, 01.01.2017, s. 63-70.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Antipruritic Effect of Cold-induced and Transient Receptor Potential-agonist-induced Counter-irritation on Histaminergic Itch in Humans
AU - Andersen, Hjalte H.
AU - Melholt, Camilla
AU - Hilborg, Sigurd D.
AU - Jerwiarz, Anne
AU - Randers, Amalie
AU - Simoni, Amalie
AU - Elberling, Jesper
AU - Arendt-Nielsen, Lars
PY - 2017/1/1
Y1 - 2017/1/1
N2 - A frequent empirical observation is that cold-induced counter-irritation may attenuate itch. The aim of this randomized, single-blinded, exploratory study was to evaluate the counter-irritation effects of cold-stimulation and topical application of transient receptor potential TRPA1/M8-agonists (trans-cinnamaldehyde/Lmenthol, respectively), on histamine-induced itch, wheals and neurogenic inflammation in 13 healthy volunteers. Histamine 1% was applied to the volar forearms using skin prick-test lancets. Recorded outcomeparameters were itch intensity, wheal reactions, and neurogenic inflammation (measured by laser-speckle perfusion-imaging). Homotopic thermal counter-irritation was performed with 6 temperatures, ranging from 4°C to 37°C, using a 3 × 3-cm thermal stimulator. Chemical “cold-like” counter-irritation was conducted with 40% L-menthol and 10% trans-cinnamaldehyde, while 5% doxepin was used as a positive antipruritic control/comparator. Cold counter-irritation stimuli from 4°C to 22°C inhibited itch in a stimulus-intensitydependent manner (p < 0.05) and, to a lesser extent, also wheal reactions and neurogenic inflammation. Chemical “cold-like” counter-irritation with both Lmenthol and trans-cinnamaldehyde had antipruritic efficacy similar to doxepin (p < 0.05). Cold-induced counter-irritation had an inhibitory effect on histaminergic itch, suggesting that agonists of cold transduction receptors could be of potential antipruritic value.
AB - A frequent empirical observation is that cold-induced counter-irritation may attenuate itch. The aim of this randomized, single-blinded, exploratory study was to evaluate the counter-irritation effects of cold-stimulation and topical application of transient receptor potential TRPA1/M8-agonists (trans-cinnamaldehyde/Lmenthol, respectively), on histamine-induced itch, wheals and neurogenic inflammation in 13 healthy volunteers. Histamine 1% was applied to the volar forearms using skin prick-test lancets. Recorded outcomeparameters were itch intensity, wheal reactions, and neurogenic inflammation (measured by laser-speckle perfusion-imaging). Homotopic thermal counter-irritation was performed with 6 temperatures, ranging from 4°C to 37°C, using a 3 × 3-cm thermal stimulator. Chemical “cold-like” counter-irritation was conducted with 40% L-menthol and 10% trans-cinnamaldehyde, while 5% doxepin was used as a positive antipruritic control/comparator. Cold counter-irritation stimuli from 4°C to 22°C inhibited itch in a stimulus-intensitydependent manner (p < 0.05) and, to a lesser extent, also wheal reactions and neurogenic inflammation. Chemical “cold-like” counter-irritation with both Lmenthol and trans-cinnamaldehyde had antipruritic efficacy similar to doxepin (p < 0.05). Cold-induced counter-irritation had an inhibitory effect on histaminergic itch, suggesting that agonists of cold transduction receptors could be of potential antipruritic value.
KW - Cold stimulation
KW - Counterirritation
KW - Histamine
KW - Itch
KW - TRPA1
KW - TRPM8
KW - TRPs
U2 - 10.2340/00015555-2447
DO - 10.2340/00015555-2447
M3 - Journal article
C2 - 27141849
AN - SCOPUS:85006997574
VL - 97
SP - 63
EP - 70
JO - Acta Dermato-Venereologica
JF - Acta Dermato-Venereologica
SN - 0001-5555
IS - 1
ER -
ID: 188162809