The role of substance P (SP) in endogenous pyrogen-induced fever was investigated.
Substance P participates in fever that is induced by tumor necrosis factor α and interleukin-6.
Substance P and prostaglandins participate of an autocrine circuitry to induce fever.
Substance P is released after endotelin-1, endogenous opioid, and corticotropin-releasing factor release.
Endotoxins and prostaglandins activate NK1 receptors in the hypothalamus.