How does bradykinin regulate or modulate pain impulses?

Bradykinin is a peptide that plays a crucial role in pain modulation by acting on specific receptors, primarily the B2 receptors, on sensory nerve endings. When tissues are injured or inflamed, bradykinin is released and enhances pain sensitivity by lowering the threshold for nociceptor activation, leading to increased pain perception. It also promotes the release of inflammatory mediators, such as prostaglandins, which further amplify pain signals. Additionally, bradykinin can induce vasodilation, contributing to inflammation and the sensation of pain in affected areas.