In 1987, a study showed that administration of
armin, an irreversible inhibitor of
acetylcholinesterase, by injection 24 hours before
sepsis modelling invoked essential depression of a lethality of mice from experimental infectious process. Later (in 1995) this data has been confirmed at cholinergic stimulation by other cholinomimetics. Inhibitors of
acetylcholinesterase can cause higher accessibility of acetylcholine and activation of cholinergic anti-inflammatory pathway as well. Tumor necrosis factors (
TNF) (and other
cytokines) are produced by cells of the
innate immune system during local injury and infection. These contribute to initiating a cascade of mediator release, and recruiting inflammatory cells to the site of infection to contain infection, referred to as "
innate immunity.". TNF amplifies and prolongs the inflammatory response by activating other cells to release
interleukin-1 (IL-1),
high mobility group B1 (
HMGB1) and other cytokines. These inflammatory cytokine responses confer protective advantages to the host at the site of
bacterial infection. A "beneficial" inflammatory response is limited, resolves in 48–72 hours, and does not spread systemically. The cholinergic anti-inflammatory pathway provides a braking effect on the innate immune response which protects the body against the damage that can occur if a localized inflammatory response spreads beyond the local tissues, which results in toxicity or damage to the
kidney,
liver,
lungs, and other organs. == Neurophysiological and immunological mechanism ==