"Recently two subtypes of MAO have been identified. MAO-A is found in norepinephrine and serotonin nerve terminals in the brain (locus caeruleus), in human placenta, in intestine, and in peripheral norepinephrine-secreting nerve terminals. MAO-B is found in neurons (usually dopamine-secreting) in the brain (dorsal raphe nucleus) [so yes, MAO-B is in the brain too] and in blood platelets (a component of blood that is responsible for the initiation of clotting). The older, irreversible MAO inhibitors are nonselective and inhibit both forms of the enzyme; the inhibition of MAO-A is responsible for the antidepressant activity, and the inhibition of MAO-B is responsible for side-effects, including serious drug interactions that occur when the patient eats cheeses and other foods."
"MAO is not only responsible for regulation of intercellular levels of norepinephrine, serotonin [this explains why DMT and LSD is potentiated], and dopamine [this explains the amphetamines and cocaine], but also for hepatic (liver) metabolism of transmitter-like substances, such as tryamine (metabolized by MAO-B) [There you have it folks!]. Tyramine is a substance that is widely found in foods... [foods with tyramine in them]... The presence of tyramine in the body from such sources, which potentially can occur when MAO is inhibited, can precipitate a hypertensive crisis that is characterized by severe increases in blood pressure, intense headaches, increased heart rate, palpitations, and other effects that can be serious or fatal. Thus food limitations are required of patients who take NON-SPECIFIC MAO inhibitors."
Here it be.
Peace,
PL