MAOB and autoimmune pancreatitis: On the other hand, when predicting the development of AIP, one should take into account not only the risk factors, but also protective factors of AIP: taking anticholinergic drugs (due to increased cholinergic activity, which leads to stimulation of the GABA-ergic inhibitory pathway in the basal ganglia); smoking (nicotine can act as an inhibitor of monoamine oxidase B, increasing the availability of dopamine) [28].