Somatostatin

Somatostatin (also known as growth hormone inhibiting hormone (GHIH) or somatotropin release-inhibiting hormone (SRIF)) is a peptide hormone that regulates the endocrine system and affects neurotransmission and cell proliferation via interaction with G-protein-coupled somatostatin receptors and inhibition of the release of numerous secondary hormones.
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Somatostatin /so·ma·to·stat·in/ a polypeptide elaborated primarily by the median eminence of the hypothalamus and by the delta cells of the islets [more]Somatostatin - Community and Resources