What is the Full Form of HCS

The main protein that the placenta produces is Human Chorionic Somatomammotropin (HCS). Although its precise biological functions are still not fully understood, it plays a significant role in regulating metabolism in pregnant women. 

Radio-immunoassay makes it simple to quantify immunoreactive-HCS (1R-HCS) accurately. IR-HCS appears to correlate well with the maternal state in cases of hypertensive illness of pregnancy, but conclusive conclusions should wait until the conclusion of carefully monitored, substantial clinical trials.

Structure of HCS

The HCS molecule has a molecular mass of 22 125 Da, a single chain made up of 191 amino acid residues connected by two disulfide bridges and eight helices. X-ray diffraction was used to identify the 2.0 crystal structure of HCS.

Levels of HCS

Only during pregnancy is HCS present, and as the baby and placenta expand, so do maternal blood levels. Near-term maximum values are around 5-7 mg/L. There is a higher level of observance in patients who have had several pregnancies. The circulation of the fetus receives little HCS. It has a 15-minute biological half-life.

The Physiologic Function of HCS

The following are some ways that HCS impacts the maternal organism's metabolic system:

• It is unknown if HCS plays any part in human breastfeeding, despite the fact that in a bioassay it mimics the effect of prolactin.

Metabolic:

• Maternal blood glucose levels rise as a result of low maternal insulin sensitivity (insulin resistance).
•  Low maternal glucose consumption contributes to embryonic feeding that is sufficient (the mother responds by increasing beta cells). Persistent hypoglycemia causes a spike in HCS.
• High lipolysis results in the liberation of free fatty acids Fasting and the release of HCS make free fatty acids more readily available to the mother since they do not cross the placenta, allowing the fetus to use substantially more glucose. Maternal ketones created from free fatty acids during prolonged fasting can penetrate the placenta and the baby uses them.
• Even in the case of maternal deficiency, these functions aid in fetal nutrition maintenance.
• HCS is a potent agonist of the prolactin receptor and a weak agonist of the growth hormone receptor.

HCS in Clinical Measurement

Other pregnancy testing techniques determined have to be more trustworthy, despite the fact that HCS employed as a sign of fetal health and development. There have also been reports of healthy pregnancies with maternal HCS levels that are undetectable.

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