In order to discover the meaning of the agonist term that concerns us now, it is interesting that we begin by knowing what its etymological origin is. In this case, we can state that it is a word of Greek origin, since it derives from “agonists”, which can be translated as “fighter”.
More specifically there are still we can determine what is the sum of two components of this language:
-The noun "agon", which is synonymous with "combat."
-The suffix "-ista", which can be translated as "trade".
In the field of biochemistry , the component that has the capacity to qualify as an agonist increase the activity performed by another substance .
The agonists function from their ability to couple to a cell-type receptor. In this way, they manage to generate a certain action in the cell The antagonists Instead, they are the compounds that cause the opposite: by binding to the receptor, they cause a blockage.
According to effect that cause, agonists can be described as partial or complete . Moreover, depending on the origin, the agonists are artificial or natural . You can also talk about irreversible agonists (its adhesion to the receiver is permanent and, therefore, produces its constant activation) and inverse agonists (An agonist who links to the same receptor as another agonist, but drives an action that is the opposite).
An example of an agonist is the alpha-1 agonist , which is qualified as adrenergic agonist since it generates an effect equal or similar to that caused by adrenaline. In your case, the alpha-1 agonist manages to stimulate the activity of an enzyme called phospholipase C . This molecule (phospholipase C) generates constriction of blood vessels and dilatation of the pupils.
In the field of anatomy , the agonist muscles they are those who make a movement opposite to the one that develops the antagonist muscle . In other words: if the agonist makes a contraction, the antagonist proceeds to relax.
Other important facts about agonist muscles are these:
-To be able to carry out a movement they always start contracting. This differentiates them in a remarkable way from the antagonists, since these make them stretch and lengthen.
-It is interesting to know that in order for an agonist muscle to allow a part of the body to return to its initial position, it will have to go on to “become” an antagonist.
-When the arm is folded, what happens is that the biceps come to function as an agonist while the triceps act as antagonists. On the contrary, when the arm is extended, the roles of these muscles are exchanged, that is, the biceps become antagonists and the triceps become agonists.
Within the scope of literature, the term agonist we are addressing is also used. Specifically, this is used to refer to the character that is totally antagonistic to another, who faces that other.