Pyrogenic cytokines (None)

Pyrogenic cytokines are a functional group of cytokines that trigger fever as part of the host immune response to infection, autoimmune disorders, and other inflammatory stimuli[1][5][6]. The primary members—IL-1, IL-6, TNF-α, and interferons—are produced predominantly by cells of the innate and adaptive immune system (such as macrophages, monocytes, and lymphocytes) in response to exogenous pyrogens like bacterial toxins[1][3][6]. These cytokines act on the hypothalamus, stimulating production of prostaglandin E2 (PGE2), which raises the thermoregulatory set point and results in fever[1][6]. While fever is considered a protective host response, excessive production or dysregulation of pyrogenic cytokines can cause harmful and even lethal outcomes, such as septic shock or cytokine storm[1][8]. Therapeutic targeting typically focuses on individual cytokines rather than the entire group; drugs such as anakinra (IL-1 antagonist), tocilizumab (IL-6 inhibitor), and anti-TNF biologics aim to mitigate pathological inflammation mediated by these molecules[2][7]. Serum concentrations of these cytokines are used as biomarkers for disease severity and response to therapy[4][6][1]. Blocking these pathways must be carefully managed due to risks of immunosuppression and secondary infections[7][8][1].

Other names

endogenous pyrogensfever-inducing cytokinesfebrile cytokinespyrogenic interleukins

Blockade of cytokine signaling, neutralization of cytokine activity, receptor antagonism