SARMs is an acronym, and its official name is selective androgen receptor modulator. When we want to know what SARMs are, we need to first understand "what is selectivity?" "What are androgen receptors?" "What is a regulator?"
Androgen receptors are the object of action of SARMs, so to know what SARMs are, we first need to know "What is androgen receptor"?
The main form of androgen is testosterone. Androgens play an important role in the body. In addition to reproduction, it can maintain the balance of hormones in the body, stimulate protein anabolism, promote nitrogen deposition and increase the number and thickness of muscle fibers.
Androgens perform their functions by binding to androgen receptors.
The androgen receptor, or AR, is a 120,000 Dalton protein made under the guidance of genes on the X chromosome. AR is the intermediate substance of androgen action, testosterone can only play a role with AR. If there is no AR in the body, the androgen does not stimulate the tissue response. If AR is not sensitive, muscle enhancement will be difficult.
Everyone's AR sensitivity is different. Some people have large muscle circumference and low body fat, but their testosterone value is actually not high after blood test, which may be because of their high AR level. Some people train hard and eat well, but the muscle growth is very slow, and a big reason for this is that the body is not sensitive to AR.
SARMs is designed to optimize this process and improve the efficiency of muscle synthesis.
In pharmacology, receptors are biomolecules composed of glycoproteins or lipoproteins that exist in the cell membrane, cytoplasm, or nucleus.
Receptor is a broad term in cell biology, referring to any biomacromolecule that can bind to hormones, neurotransmitters, drugs, or signaling molecules within cells and cause changes in cell function.
Receptor is the component of cell membrane or cell that can recognize and bind to bioactive molecules, it can recognize and receive signals accurately amplified and transmitted to the cell interior, so as to cause biological effects.
When the receptor in the body is not sensitive, it will lead to the reduction of its ligand binding rate, can not achieve the corresponding effect. Receptor regulation can increase receptor sensitivity and thus increase the probability of binding between the receptor and its ligand.
The object of regulation of regulators is AR, and SARMs is to make AR more sensitive and can combine with more androgens, thus improving the efficiency of muscle synthesis.
Selectivity is the key word in selective androgen receptor modulators (sarms).
As bodybuilder increases the amount of androgens in the blood, it also adjusts AR to bind to more androgens. At this time, if all the androgen receptors in the body are binding with androgens, then the concentration of androgens in the prostate is the highest, and a large number of androgens and androgen receptors in the prostate will cause enlargement of the prostate and other problems. At the same time, androgen receptors in different parts of the body become sensitive and bind more to androgens, causing side effects such as acne and hair growth.
Steriod is combine directly to AR in the body. SARMs increase selectivity and regulation on the basis of it, making the androgen receptors it acts on more active, while also avoiding the possible side effects caused by binding with all androgen receptors. This is the advantage of SARMs over Steroids.