Bradykinin potentiating and sensitizing activities of new synthetic analogues of snake venom peptides.
The structural requirements for prolonged residual ("sensitizing") activity in bradykinin-potentiating peptides (BPP's) were investigated through a study of seven synthetic BPP's including three not previously described: [Lys6]-BPP9a, [Gly6]potentiator B, and [Lys6,Gln8]potentiator B. The quantitation of the sensitizing activities in the isolated guinea pig ileum indicated that the structural requirements for bradykinin potentiation and for sensitization were not the same. The most potent sensitizers were potentiator B and [Lys6]-BPP9a.
D000818:Animals; D001920:Bradykinin / Q000494:pharmacology*; D004357:Drug Synergism; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D009842:Oligopeptides / Q000138:chemical synthesis / Q000494:pharmacology; D012910:Snake Venoms / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship
D009842:Oligopeptides; D012910:Snake Venoms; D001920:Bradykinin