Journal
JOURNAL OF MOLECULAR ENDOCRINOLOGY
Volume 53, Issue 1, Pages R1-R19Publisher
BIOSCIENTIFICA LTD
DOI: 10.1530/JME-14-0034
Keywords
somatostatin; receptors; pituitary; hormone secretion
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The somatostatin (SRIF) system, which includes the SRIF ligand and receptors, regulates anterior pituitary gland function, mainly inhibiting hormone secretion and to some extent pituitary tumor cell growth. SRIF-14 via its cognate G-protein-coupled receptors (subtypes 1-5) activates multiple cellular signaling pathways including adenylate cyclase/cAMP, MAPK, ion channel-dependent pathways, and others. In addition, recent data have suggested SRIF-independent constitutive SRIF receptor activity responsible for GH and ACTH inhibition in vitro. This review summarizes current knowledge on ligand-dependent and independent SRIF receptor molecular and functional effects on hormone-secreting cells in the anterior pituitary gland.
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