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Somatostatin acts at many sites to inhibit the release of many hormones and other secretory proteins. The biologic effects of somatostatin are probably mediated by a family of G protein-coupled receptors that are expressed in a tissue-specific manner. SSTR4 is a member of the superfamily of receptors having seven transmembrane segments and is expressed in highest levels in fetal and adult brain and lung.[2]
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Xu Y, Song J, Bruno JF, Berelowitz M (June 1993). "Molecular cloning and sequencing of a human somatostatin receptor, hSSTR4". Biochemical and Biophysical Research Communications. 193 (2): 648–52. doi:10.1006/bbrc.1993.1673. PMID8512564.
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de Lecea L, Ruiz-Lozano P, Danielson PE, Peelle-Kirley J, Foye PE, Frankel WN, Sutcliffe JG (June 1997). "Cloning, mRNA expression, and chromosomal mapping of mouse and human preprocortistatin". Genomics. 42 (3): 499–506. doi:10.1006/geno.1997.4763. PMID9205124.
Jaïs P, Terris B, Ruszniewski P, LeRomancer M, Reyl-Desmars F, Vissuzaine C, Cadiot G, Mignon M, Lewin MJ (August 1997). "Somatostatin receptor subtype gene expression in human endocrine gastroentero-pancreatic tumours". European Journal of Clinical Investigation. 27 (8): 639–44. doi:10.1046/j.1365-2362.1997.1740719.x. PMID9279525.
Sharma K, Patel YC, Srikant CB (January 1999). "C-terminal region of human somatostatin receptor 5 is required for induction of Rb and G1 cell cycle arrest". Molecular Endocrinology. 13 (1): 82–90. doi:10.1210/me.13.1.82. PMID9892014.
Forssell-Aronsson EB, Nilsson O, Bejegård SA, Kölby L, Bernhardt P, Mölne J, Hashemi SH, Wängberg B, Tisell LE, Ahlman H (April 2000). "111In-DTPA-D-Phe1-octreotide binding and somatostatin receptor subtypes in thyroid tumors". Journal of Nuclear Medicine. 41 (4): 636–42. PMID10768564.
Zatelli MC, Tagliati F, Taylor JE, Rossi R, Culler MD, degli Uberti EC (May 2001). "Somatostatin receptor subtypes 2 and 5 differentially affect proliferation in vitro of the human medullary thyroid carcinoma cell line tt". The Journal of Clinical Endocrinology and Metabolism. 86 (5): 2161–9. doi:10.1210/jc.86.5.2161. PMID11344221.
Pasquali D, Notaro A, Esposito D, Vassallo P, Bonavolontà G, Bellastella A, Sinisi AA (September 2001). "[Somatostatin receptor genes expression and effects of octreotide on orbital fibroblasts from Graves' ophthalmopathy]". Minerva Endocrinologica. 26 (3): 175–9. PMID11753241.
Papotti M, Bongiovanni M, Volante M, Allìa E, Landolfi S, Helboe L, Schindler M, Cole SL, Bussolati G (May 2002). "Expression of somatostatin receptor types 1-5 in 81 cases of gastrointestinal and pancreatic endocrine tumors. A correlative immunohistochemical and reverse-transcriptase polymerase chain reaction analysis". Virchows Archiv. 440 (5): 461–75. doi:10.1007/s00428-002-0609-x. PMID12021920.
External links
"Somatostatin Receptors: sst4". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.