Catecholamines. Definition

Medical Definition: Catecholamines

Type neurohormone (chemicals produced by nerve cells and used to send signals to other cells, derived from tyrosine, such as epinephrine (adrenaline), dopamine, adrenaline and noradrenaline). They are produced in the adrenal gland and the nerve endings. Catecholamines are important to respond to stress. High concentrations of this substance can cause high blood pressure, which in turn can cause headaches, sweating, pounding heartbeat, chest pain and anxiety. Norepinephrine (noradrenaline) are also examples of catecholamines. These substances are secreted by carcinoid tumors and are ultimately responsible for the appearance of carcinoid syndrome.

* Automatic translation