Sermorelin GHRP-2 is a combined peptide therapy utilizing Sermorelin, a Growth Hormone-Releasing Hormone (GHRH) analog, and GHRP-2 (Growth Hormone Releasing Peptide-2), a ghrelin mimetic. This synergistic combination is administered clinically to stimulate the body’s natural, pulsatile release of endogenous Growth Hormone (GH) from the pituitary gland. This approach is employed to address age-related decline in the somatotropic axis, aiming to improve body composition, sleep quality, and overall vitality without the risks associated with administering exogenous GH. It is a foundational tool in hormonal longevity protocols.
Origin
Sermorelin, a synthetic peptide, was developed based on the structure of the naturally occurring GHRH, which is produced in the hypothalamus. GHRP-2 is a synthetic agonist of the ghrelin receptor, discovered as part of the research into peptides that stimulate GH release. The combined use represents an advanced pharmacological strategy to maximize the physiological release of GH, mimicking the natural regulatory pathways more closely than single-agent therapy.
Mechanism
Sermorelin acts directly on the somatotroph cells of the anterior pituitary gland, binding to GHRH receptors to initiate the synthesis and release of GH. GHRP-2 works through a distinct, synergistic pathway by binding to the ghrelin receptor, further amplifying the GH release signal and often suppressing somatostatin, the inhibitory hormone. This dual-mechanism ensures a robust, yet physiological, pulsatile secretion of GH, which then mediates its anabolic and lipolytic effects primarily through the hepatic production of Insulin-like Growth Factor 1 (IGF-1).
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