Abstract
The antisecretory effects of somatostatin (SRIF) and its analogs are widely recognised and provide the basis for treatment of hormonal hypersecretion in pituitary adenomas, especially in the settings of acromegaly. Evidence for an antiproliferative effect of these compounds has also been provided.
This review focuses on the mechanisms transducing the antiproliferative effects of SRIF and its analogs on pituitary adenomas, and on the clinical consequences on tumor volume of pharmacological treatment of pituitary adenomas with these drugs.
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References
Brazeau P, Vale W, Burgus R, Ling N, Butcher M, Rivier J, Guillemin R (1973) Hypothalamic polypeptide that inhibits the secretion of immunoreactive pituitary growth hormone. Science 179:77–79
Reichlin S Somatostatin (1983) N Engl J Med 309:1495–1501
Reichlin S Somatostatin (1983) N Engl J Med 309:1556–1563
Delesque N, Buscail L, Esteve JP, Saint-Laurent N, Muller C, Weckbecker G, Bruns C, Vaysse N, Susini C (1997) Sst2 somatostatin receptor expression reverses tumorigenicity of human pancreatic cancer cells. Cancer Res 57:956–962
Guillemin R (1978) Peptides in the brain: The new endocrinology of the neuron. Science 202:390–402
Patel YC (1999) Somatostatin and its receptor family. Front Neuroendocrinol 20:157–198
Lamberts SW, van der Lely AJ, de Herder WW, Hofland LJ (1996) Octreotide. N Engl J Med 334:246–254
Patel YC, Wheatley T (1983)_ In vivo and in vitro plasma disappearance and metabolism of somatostatin-28 and somatostatin-14 in the rat. Endocrinology 112:220–225
Meyerhof W (1998) The elucidation of somatostatin receptor functions: A current view. Rev Physiol Biochem Pharmacol 133:55–108
Hoyer D, et al (2000) in The IUPHAR compendium of receptor characterisation and classification (IUPHAR committee on receptor nomenclature and drug classification) (IUPHAR media, London) pp. 354–356
Bruns C, Weckbecker G, Raulf F, Kaupmann K, Schoeffter P, Hoyer D, Lubbert H (1994) Molecular pharmacology of somatostatin-receptor subtypes. Ann NY Acad Sci 733:138–146
Florio T, Scorizello A, Fattore M, D’Alto V, Salzano S, Rossi G, Berlingieri MT, Fusco A, Schettini G (1996) Somatostatin inhibits PC C13 thyroid cell proliferation through the modulation of phosphotyrosine phosphatase activity—impairment of the somatostatinergic effects by stable expression of EIA viral oncogene. J Biol Chem 271:6129–6136
Akbar M, Okajima F, Tomura H, Majid MA, Yamada Y, Seino S, Kondo Y (1994) Phospholipase C activation and Ca2+ mobilization by cloned human somatostatin receptor subtypes 1–5 in transfected COS-7 cells. FEBS Lett 348:192–196
Weckbecker G, Lewis I, Albert R, Schmid HA, Hoyer D, Bruns C (2003) Opportunities in somatostatin research: biological, chemical and therapeutic aspects. Nat Rev Drug Discov 2:999–1017
Moyse E, Le Dafniet M, Epelbaum J, Pagesy P, Peillon F, Kordon C, Enjalbert A (1985) Somatostatin receptors in human growth hormone and prolactin-secreting pituitary adenomas. J Clin Endocrinol Metab 61:98 –103
Ikuyama S, Nawata H, Kato K, Karashima T, Ibayashi H, Nakagaki H (1985) Specific somatostatin receptors on human pituitary adenoma cell membranes. J Clin Endocrinol Metab 61:666–671
Greenman Y, Melmed S (1994) Expression of three somatostatin receptor subtypes in pituitary adenomas: Evidence for preferential SSTR5 expression in the mammosomatotroph lineage. J Clin Endocrinol Metab 79:724–729
Greenman Y, Melmed S (1994) Heterogeneous expression of two somatostatin receptor subtypes in pituitary tumors. J Clin Endocrinol Metab 78:398–403.
Panetta R, Patel YC (1995) Expression of mRNA for all five human somatostatin receptors (hSSTR1–5) in pituitary tumors. Life Sci 56:333–342
Miller GM, Alexander JM, Bikkal HA, Katznelson L, Zervas NT, Klibanski A (1995) Somatostatin receptor subtype gene expression in pituitary adenomas. J Clin Endocrinol Metab 80:1386–1392
Murabe H, Shimatsu A, Ihara C, Mizuta H, Nakamura Y, Nagata I, Kikuchi H, Nakao K (1996) Expression of somatostatin receptor (SSTR) subtypes in pituitary adenomas: Quantitative analysis of SSTR2 mRNA by reverse transcription- polymerase chain reaction. J Neuroendocrinol 8:605–610
Nielsen S, Mellemkjaer S, Rasmussen LM, Ledet T, Astrup J, Weeke J, Jorgensen JO (1998) Gene transcription of receptors for growth hormone releasing peptide and somatostatin in human pituitary adenomas. J Clin Endocrinol Metab 83:2997–3000
Nielsen S, Mellemkjaer S, Rasmussen LM, Ledet T, Olsen N, Bojsen-Moller M, Astrup J, Weeke J, Jorgensen JO (2001) Expression of somatostatin receptors on human pituitary adenomas in vivo and ex vivo. J Endocrinol Invest 24:430–7
Jaquet P, Saveanu A, Gunz G, Fina F, Zamora AJ, Grino M, Culler MD, Moreau JP, Enjalbert A, Ouafik LH (2000) Human somatostatin receptor subtypes in acromegaly: Distinct patterns of messenger ribonucleic acid expression and hormone suppression identify different tumoral phenotypes. J Clin Endocrinol Metab 85:781–792
Florio T, Thellung S, Arena S, Corsaro A, Spaziante R, Gussoni G, Acuto C, Giusti M, Giordano G, Schettini G (1999) Somatostatin and its analog lanreotide inhibit the proliferation of dispersed human non-functioning pituitary adenoma cells in vitro. Eur J Endocrinol 141:396–408
Shimon I, Taylor JE, Dong JZ, Bitonte RA, Kim S, Morgan B, Coy DH, Culler MD, Melmed S (1997) Somatostatin receptor subtype specificity in human fetal pituitary cultures. Differential role of SSTR2 and SSTR5 for growth hormone, thyroid-stimulating hormone, and prolactin regulation. J Clin Invest 99:789–798
Shimon I, Yan X, Taylor JE, Weiss MH, Culler MD, Melmed S (1997) Somatostatin receptor (SSTR) subtype-selective analogues differentially suppress in vitro growth hormone and prolactin in human pituitary adenomas. Novel potential therapy for functional pituitary tumors. J Clin Invest 100:2386–2392
van der Hoek J, de Herder WW, Feelders RA, van der Lely AJ, Uitterlinden P, Boerlin V, Bruns C, Poon KW, Lewis I, Weckbecker G, Krahnke T, Hofland LJ, Lamberts SW (2004) A single-dose comparison of the acute effects between the new somatostatin analog SOM230 and octreotide in acromegalic patients. J Clin Endocrinol Metab 89:638–645
Zatelli MC, Piccin D, Tagliati F, Ambrosio MR, Margutti A, Padovani R, Scanarini M, Culler MD, degli Uberti EC (2003) Somatostatin receptor subtype 1 selective activation in human growth hormone- and prolactin-secreting pituitary adenomas: effects on cell viability, growth hormone and prolactin secretion. J Clin Endocrinol Metab 88:2797–2802
Zatelli MC, Piccin D, Bottoni A, Ambrosio MR, Margutti A, Padovani R, Scanarini M, Taylor JE, Culler MD, Cavazzini L, degli Uberti EC (2004) Evidence for differential effects of selective somatostatin receptor subtype agonists on alpha-subunit and chromogranin A secretion and on cell viability in human non-functioning pituitary adenomas in vitro. J Clin Endocrinol Metab 89:5181–5188
van der Hoek J, Waaijers M, van Koetsveld PM, Sprij-Mooij D, Feelders RA, Schmid HA, Schoeffter P, Hoyer D, Cervia D, Taylor JE, Culler MD, Lamberts SW, Hofland LJ (2005) Distinct functional properties of native somatostatin receptor subtype 5 compared with subtype 2 in the regulation of ACTH release by corticotroph tumor cells. Am J Physiol Endocrinol Metab 289:E278–287
Hofland LJ, van der Hoek J, Feelders R, van Aken MO, van Koetsveld PM, Waaijers M, Sprij-Mooij D, Bruns C, Weckbecker G, de Herder WW, Beckers A, Lamberts SW (2005) The multi-ligand somatostatin analogue SOM230 inhibits ACTH secretion by cultured human corticotroph adenomas via somatostatin receptor type 5. Eur J Endocrinol 152:645–654
Koper JW, Hofland LJ, van Koetsveld PM, den Holder F, Lamberts SW (1990) Desensitization and resensitization of rat pituitary tumor cells in long-term culture to the effects of the somatostatin analogue SMS 201-995 on cell growth and prolactin secretion. Cancer Res 50:6238–6242
Hofland LJ, van Koetsveld PM, Wouters N, Waaijers M, Reubi JC, Lamberts SW (1992) Dissociation of antiproliferative and antihormonal effects of the somatostatin analog octreotide on 7315b pituitary tumor cells. Endocrinology 131:571–577
Renner U, Mojto J, Lange M, Muller OA, von Werder K, Stalla GK(1994) Effect of bromocriptine and SMS 201-995 on growth of human somatotrophic and non-functioning pituitary adenoma cells in vitro. Eur J Endocrinol 130:80–91
Danila DC, Haidar JN, Zhang X, Katznelson L, Culler MD, Klibanski A (2001) Somatostatin receptor-specific analogs: Effects on cell proliferation and growth hormone secretion in human somatotroph tumors. J Clin Endocrinol Metab 86:2976–2981
Lamberts SWJ, Krenning EP, Reubi JC (1991) The role of somatostatin and its analogs in the diagnosis and treatment of tumors. Endocr Rev 12:450–482
Ballarè E, Persani L, Lania AG, Filopanti M, Giammona E, Corbetta S, Mantovani S, Arosio M, Beck-Peccoz P, Faglia G, Spada A (2001) Mutation of somatostatin receptor type 5 in an acromegalic patient resistant to somatostatin analog treatment. J Clin Endocrinol Metab 86:3809–3814
Dasgupta P, Singh AT, Mukherjee R (1999) Antiproliferative and GH-inhibitory activity of chimeric peptides consisting of GHRP-6 and somatostatin. Biochem Biophys Res Commun 259:379–384
Florio T, Thellung S, Corsaro A, Bocca L, Arena S, Pattarozzi A, Villa V, Massa A, Diana F, Schettini D, Barbieri F, Ravetti JL, Spaziante R, Giusti M, Schettini G (2003) Characterization of the intracellular mechanisms mediating somatostatin and lanreotide inhibition of DNA synthesis and growth hormone release from dispersed human GH-secreting pituitary adenoma cells in vitro. Clin Endocrinol 59:115–128
Weckbecker G, Lewis I, Albert R, Schmid HA, Hoyer D, Bruns C (2003) Opportunities in somatostatin research: Biological, chemical and therapeutic aspects. Nat Rev Drug Discov 2:999–1017
Zatelli MC, Piccin D, Tagliati F, Bottoni A, Luchin A, degli Uberti EC (2005) SHP-1 restrains cell proliferation in human medullary thyroid carcinoma. Endocrinology 146:2692–2698
Rocheville M, Lange DC, Kumar U, Patel SC, Patel RC, Patel YC (2000) Receptors for dopamine and somatostatin: Formation of hetero-oligomers with enhanced functional activity. Science 288:154–157
Rocheville M, Lange DC, Kumar U, Sasi R, Patel RC, Patel YC (2000) Subtypes of the somatostatin receptor assemble as functional homo- and heterodimers. J Biol Chem 275:7862–7869
Culler MD (2004) Evolving concepts in the quest for advanced therapeutic analogues of somatostatin. Dig Liver Dis 36(1):S17–25
Matrone C, Pivonello R, Colao A, Cappabianca P, Cavallo LM, Del Basso De Caro ML, Taylor JE, Culler MD, Lombardi G, Di Renzo GF, Annunziato L (2004) Expression and function of somatostatin receptor subtype 1 in human growth hormone secreting pituitary tumors deriving from patients partially responsive or resistant to long-term treatment with somatostatin analogs. Neuroendocrinology 79:142–148
Oppizzi G, Cozzi R, Dallabonzana D, Orlandi P, Benini Z, Petroncini M, Attanasio R, Milella M, Banfi G, Possa M (1998) Scintigraphic imaging of pituitary adenomas: An in vivo evaluation of somatostatin receptors. J Endocrinol Invest 21:512–519
Andersen M, Bjerre P, Schroder HD, Edal A, Hoilund-Carlsen PF, Pedersen PH, Hagen C (2001) In vivo secretory potential and the effect of combination therapy with octreotide and cabergoline in patients with clinically non-functioning pituitary adenomas. Clin Endocrinol 54:23–30
Colao A, Di Sarno A, Marzullo P, Di Somma C, Cerbone G, Landi ML, Faggiano A, Merola B, Lombardi G (2000) New medical approaches in pituitary adenomas. Horm Res 53(3):76–87
Gasperi M, Petrini L, Pilosu R, Nardi M, Marcello A, Mastio F, Bartalena L, Martino E (1993) Octreotide treatment does not affect the size of most non-functioning pituitary adenomas. J Endocrinol Invest 16:541
Barrie R, Woltering EA, Hajarizadeh H, Mueller C, Ure T, Fletcher WS (1993) Inhibition of angiogenesis by somatostatin and somatostatin-like compounds is structurally dependent. J Surg Res 55:446–450
Danesi R, Del Tacca M (1996) The effects of the somatostatin analog octreotide on angiogenesis in vitro. Metabolism 45:49–50
Danesi R, Agen C, Benelli U, Paolo AD, Nardini D, Bocci G, Basolo F, Campagni A, Tacca MD (1997) Inhibition of experimental angiogenesis by the somatostatin analogue octreotide acetate (SMS 201-995). Clin Cancer Res 3:265–272
Cristina C, Diaz-Torga G, Baldi A, Gongora A, Rubinstein M, Low MJ, Becu-Villalobos D (2005) Increased pituitary vascular endothelial growth factor-a in dopaminergic D2 receptor knockout female mice. Endocrinology 146:2952–2962
Stefaneanu L, Kovacs K, Horvath E, Buchfelder M, Fahlbusch R, Lancranjan L (2001) Dopamine D2 receptor gene expression in human adenohypophysial adenomas. Endocrine 14:329–336
Bevan JS, Burke CW (1986) Non-functioning pituitary adenomas do not regress during bromocriptine therapy but possess membrane-bound dopamine receptors which bind bromocriptine. Clin Endocrinol (Oxf) 25:561–572
Grossman A, Ross R, Charlesworth M, Adams CB, Wass JA, Doniach I, Besser GM (1985) The effect of dopamine agonist therapy on large functionless pituitary tumours. Clin Endocrinol (Oxf) 22:679–686
Greenman Y, Tordjman K, Osher E, Veshchev I, Shenkerman G, Reider-Groswasser II, Segev Y, Ouaknine G, Stern N (2005) Postoperative treatment of clinically nonfunctioning pituitary adenomas with dopamine agonists decreases tumour remnant growth. Clin Endocrinol (Oxf) 63:39–44
Renner U, Arzberger T, Pagotto U, Leimgruber S, Uhl E, Muller A, Lange M, Weindl A, Stalla GK (1998) Heterogeneous dopamine D2 receptor subtype messenger ribonucleic acid expression in clinically nonfunctioning pituitary adenomas. J Clin Endocrinol Metab 83:1368–1375
Caccavelli L, Feron F, Morange I, Rouer E, Benarous R, Dewailly D, Jaquet P, Kordon C, Enjalbert A (1994) Decreased expression of the two D2 dopamine receptor isoforms in bromocriptine-resistant prolactinomas. Neuroendocrinology 60:314–322
Iaccarino C, Samad TA, Mathis C, Kercret H, Picetti R, Borrelli E (2002) Control of lactotrop proliferation by dopamine: Essential role of signalling through D2 receptors and ERKs. Proc Natl Acad Sci USA 99:14530–14535
An JJ, Cho SR, Jeong DW, Park KW, Ahn YS, Baik JH (2003) Anti-proliferative effects and cell death mediated by two isoforms of dopamine D2 receptors in pituitary tumor cells. Mol Cell Endocrinol 206:49–62
Gruszka A, Kunert-Radek J, Radek A, Pisarek H, Taylor J, Dong JZ, Culler MD, Pawlikowski M (2006) The effect of selective sst1, sst2, sst5 somatostatin receptors agonists, a somatostatin/dopamine (SST/DA) chimera and bromocriptine on the “clinically non-functioning” pituitary adenomas in vitro. Life Sci 78:689–693
Thapar K, Kovacs KT, Stefaneanu L, Scheithauer BW, Horvath E, Lloyd RV, Li J, Laws ER Jr (1997) Antiproliferative effect of the somatostatin analogue octreotide on growth hormone-producing pituitary tumors: results of a multicenter randomized trial. Mayo Clin Proc 72:893–900
Cap J, Cerman J, Nemecek S, Marekova M, Hana V, Frysak Z (2003) The influence of treatment with somatostatin analogues on morphology, proliferative and apoptotic activity in GH-secreting pituitary adenomas. J Clin Neurosci 10:444–448
Losa M, Ciccarelli E, Mortini P, Barzaghi R, Gaia D, Faccani G, Papotti M, Mangili F, Terreni MR, Camanni F, Giovanelli M (2001) Effects of octreotide treatment on the proliferation and apoptotic index of GH-secreting pituitary adenomas. J Clin Endocrinol Metab 86:5194–5200
Freda PU (2003) How effective are current therapies for acromegaly? Growth Horm IGF Res 13:S144–S151
Bevan JS (2005) The anti-tumoral effects of somatostatin analog therapy in acromegaly. J Clin Endocrin Metab 90:1856–1863
Besser GM, Burman P, Daly AF (2005) Predictors and rates of treatment-resistant tumor growth in acromegaly. Eur J Endocrinol 153:187–193
Freda PU (2002) Somatostatin analogs in acromegaly. J Clin Endocrinol Metab 87:3013–3018
Melmed S, Sternberg R, Cook D, Klibanski A, Chanson P, Bonert V, Vance ML, Rhew D, Kleinberg D, Barkan A (2005) A critical analysis of pituitary tumor shrinkage during primary medical therapy in acromegaly. J Clin Endocrinol Metab 90:4405–4410
Abe T, Ludecke DK (2001) Effects of preoperative octreotide treatment on different subtypes of 90 GH-secreting pituitary adenomas and outcome in one surgical centre. Eur J Endocrinol 145:137–145
Giusti M, Ciccarelli E, Dallabonzana D, Delitala G, Faglia G, Liuzzi A, Gussoni G, Disem GG (1997) Clinical results of long-term slow-release lanreotide treatment of acromegaly. Eur J Clin Invest 27:277–284
Suliman M, Jenkins R, Ross R, Powell T, Battersby R, Cullen DR (1999) Long-term treatment of acromegaly with the somatostatin analogue SR-lanreotide. J Endocrinol Invest 22:409–418
Tauber JP, Babin T, Tauber MT, Vigoni F, Bonafe A, Ducasse M, Harris AG, Bayard F (1989) Long term effects of continuous subcutaneous infusion of the somatostatin analog octreotide in the treatment of acromegaly. J Clin Endocrinol Metab 68:917–924
Barakat S, Melmed S (1989) Reversible shrinkage of a growth hormone-secreting pituitary adenoma by a long-acting somatostatin analogue, octreotide. Arch Int Med 149:1443–1445
Arosio M, Macchelli S, Rossi CM, Casati G, Biella O, Faglia G (1995) Effects of treatment with octreotide in acromegalic patients–a multicenter Italian study. Italian Multicenter Octreotide Study Group. Eur J Endocrinol 133:430–439
Ezzat S, Snyder PJ, Young WF, Boyajy LD, Newman C, Klibanski A, et al. (1992) Octreotide treatment of acromegaly. A randomized, multicenter study. Ann Intern Med 117:711–718
Flogstad AK, Halse J, Haldorsen T, Lancranjan I, Marbach P, Bruns C, Jervell J (1995) Sandostatin LAR in acromegalic patients: A dose-range study. J Clin Endocrinol Metab 80:3601–3607
Ezzat S, Horvath E, Harris AG, Kovacs K (1994)Morphological effects of octreotide on growth hormone-producing pituitary adenomas. J Clin Endocrinol Metab 79:113–118
Gruszka A, Pawlikowski M, Kunert-Radek J (2001) Anti-tumoral action of octreotide and bromocriptine on the experimental rat prolactinoma: Anti-proliferative and pro-apoptotic effects. Neuro Endocrinol Lett 22:343–348
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Grants: Italian Ministry of Scientific and Technological Research (2005 060839-004), University of Ferrara (ex 60% 2005), Associazione Ferrarese dell’Ipertensione Arteriosa to the Section of Endocrinology, Ferrara.
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Zatelli, M.C., Piccin, D., Ambrosio, M.R. et al. Antiproliferative effects of somatostatin analogs in pituitary adenomas. Pituitary 9, 27–34 (2006). https://doi.org/10.1007/s11102-006-7822-6
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DOI: https://doi.org/10.1007/s11102-006-7822-6