Metabolic response to infection.

A generalized infectious process leads to a broad and complex array of metabolic responses within the host. Certain of these responses have a direct causal relationship to the interactions of body cells with invading microorganisms or their products, or to specific host defensive mechanisms. Other host metabolic responses have less clearly defined roles although they involve many tissues and seem to be initiated and regulated by certain hormones-like endogenous mediators. These latter responses contribute to the maintenance of body homeostasis, the provision of metabolizable energy to meet increased body needs, and the synthesis of the acute phase reactant serum proteins.