CAS 87616-84-0 GHRP-6 Acetate Growth Hormone Releasing Peptide Powder For Building Muscle

 GHRP-6 is a synthetic growth hormone (GH) secretagogue and an agonist of the GH secretagogue receptor (GHS-R), which is also known as the ghrelin receptor.1,2,3,4 It inhibits binding of the GHS-R agonist MK-0677 to COS-7 cell membranes expressing human GHS-R type Ia (Ki = 1.9 nM) and binding of ghrelin to COS-7 cells expressing human GHS-R (Kd = 260 nM).2,3 GHRP-6 stimulates intracellular calcium mobilization in BHK cells expressing the human receptor (EC50 = 4.5 nM) and inositol phosphate production in COS-7 cells expressing the human receptor (EC50 = 0.83 nM).3 It also acts as a negative allosteric modulator of ghrelin signaling. GHRP-6 (0.03 μg/ml) induces release of GH, but not thyroid-stimulating hormone (TSH), luteinizing hormone (LH), or follicle-stimulating hormone (FSH), in isolated rat pituitary gland.1 It increases levels of GH, but not TSH, LH, FSH, or prolactin, in rat blood when administered subcutaneously at a dose of 50 μg. GHRP-6 increases food intake in rats when administered intracerebroventricularly at 0.3, 1, and 3 nmol.4

References
1. Bowers, C.Y., Momany, F.A., Reynolds, G.A., et al. On the in vitro and in vivo activity of a new synthetic hexapeptide that acts on the pituitary to specifically release growth hormone. Endocrinology 114(5), 1537-1545 (1984).
2. Howard, A.D., Feighner, S.D., Cully, D.F., et al. A receptor in pituitary and hypothalamus that functions in growth hormone release. Science 273(5277), 974-977 (1996).
3. Holst, B., Brandt, E., Bach, A., et al. Nonpeptide and peptide growth hormone secretagogues act both as ghrelin receptor agonist and as positive or negative allosteric modulators of ghrelin signaling. Mol. Endocrinol. 19(9), 2400-2411 (2005).
4. Wren, A.M., Small, C.J., Ward, H.L., et al. The novel hypothalamic peptide ghrelin stimulates food intake and growth hormone secretion. Endocrinology 141(11), 4325-4328 (2000).

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