PSA Levels refer to the concentration of Prostate-Specific Antigen, a glycoprotein produced primarily by the epithelial cells lining the prostatic ducts, measured in the blood serum. While widely used as a screening marker, it is fundamentally an indicator of prostate cell activity, and its elevation can reflect benign prostatic hyperplasia or malignancy. In men’s hormonal health, prostate tissue health is inextricably linked to androgen metabolism.
Origin
PSA stands for Prostate-Specific Antigen, reflecting its initial identification as an enzyme unique to the prostate gland. Its clinical utility arose from its reliable detection in peripheral circulation when prostate cells are disturbed.
Mechanism
PSA is normally secreted into the seminal fluid, but when the prostate epithelium is stressed, inflamed, or proliferating, the barrier integrity is compromised, allowing leakage into the bloodstream. Elevated levels prompt investigation into the local androgen environment, as DHT plays a significant role in driving prostatic cell growth and turnover, which directly impacts measured PSA concentrations.
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