A-967079 + BAM8-22

A-967079 + BAM8-22 is an experimental combination used primarily in research to study the mechanisms of non-histaminergic itch. A-967079 is a potent and selective small molecule antagonist of the transient receptor potential ankyrin 1 (TRPA1) channel, while BAM8-22 is a peptide agonist for the Mas-related G protein-coupled receptor X1 (MrgprX1). In preclinical and clinical studies, this combination has been used to investigate how TRPA1 antagonism modulates itch induced by MrgprX1 activation. The primary mechanism involves BAM8-22 activating MrgprX1 on sensory neurons, which subsequently leads to downstream activation of TRPA1 channels and generation of non-histaminergic itch. Administration of A-967079 blocks TRPA1 activity, thereby reducing or abolishing the itch response triggered by BAM8-22[2][3][4]. This model helps elucidate pathways involved in chronic pruritus conditions that are resistant to antihistamines.