Summary
Bradykinin has long been postulated to have a major role in physiologic human pain production. We have developed a method to systematically quantify the algogenic response to bradykinin in human skin by the direct application of bradykinin to suction blister bases. After determination of the pain threshold to bradykinin, we examined the ability of synthetic peptide analogs of bradykinin to block bradykinin-induced pain. One of the six analogs (B4642) inhibited bradykinin-induced pain with at least one concentration in all subjects tested. This result could not be predicted on the basis of inhibition of bradykinin binding to its guinea-pig ileum receptor or to previous studies of bradykinin-induced pain production in animal models. This peptide may have an eventual role as a physiologic pain inhibitor.
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Schneider, B.K., Morelli, J.G., Vavrek, R.J. et al. Evaluation of cutaneous algogenic responses to bradykinin and inhibition by bradykinin analogs. Arch Dermatol Res 284, 1–4 (1992). https://doi.org/10.1007/BF00371917
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DOI: https://doi.org/10.1007/BF00371917