Growth Hormone Axis
The growth hormone axis is regulated by two complementary upstream signals: GHRH (stimulatory, from the hypothalamus, acting on the GHRH receptor on pituitary somatotrophs) and ghrelin (stimulatory, from the stomach, acting on the GHS-R1a). Research peptides target both arms: tesamorelin and CJC-1295 (GHRH analogs); ipamorelin, GHRP-6, and hexarelin (ghrelin-receptor agonists).
