Inhibition of growth hormone and glucagon release by Phe-4-somatostatin in patients with acromegaly

A. L. Charro, J. A. Cabranes, A. Lafuente, C. Diaz-Salgado, M. Cordero, I. Almoguera, A. M. Comaru-Schally, C. A. Meyers, D. H. Coy, Andrew V Schally

Research output: Contribution to journalArticle

Abstract

We have studied growth hormone (GH), insulin (I), glucagon (Gl) and glucose in basal conditions, after somatostatin (SS) (3 μg/ml) and Phe-4-SS (0.75 μg/ml) infusion and IV bolus of the latter in 3 acromegalic patients. In two patients, Phe-4-SS inhibited glucagon and growth hormone secretion in a similar way to SS, without modifying insulin secretion. These effects were short-lived and ceased after the infusion was stopped. From these results it appears that Phe-4-SS is both more potent and more specific than SS with respect to inhibition of GH and glucagon release, but it does not have prolonged biological action. Lack of suppression of GH by SS or Phe-4-SS in the acromegalic patient with post-surgical recurrence of the disease could be due to the existence of receptor abnormalities, and suggests a diversity in the physiopathology of the disease.

Original languageEnglish
Pages (from-to)432-444
Number of pages13
JournalResearch Communications in Chemical Pathology and Pharmacology
Volume45
Issue number3
StatePublished - Nov 15 1984
Externally publishedYes

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Acromegaly
Somatostatin
Glucagon
Growth Hormone
Insulin
Glucose
Recurrence
Phe(4)-somatostatin

ASJC Scopus subject areas

  • Toxicology
  • Pharmacology

Cite this

Inhibition of growth hormone and glucagon release by Phe-4-somatostatin in patients with acromegaly. / Charro, A. L.; Cabranes, J. A.; Lafuente, A.; Diaz-Salgado, C.; Cordero, M.; Almoguera, I.; Comaru-Schally, A. M.; Meyers, C. A.; Coy, D. H.; Schally, Andrew V.

In: Research Communications in Chemical Pathology and Pharmacology, Vol. 45, No. 3, 15.11.1984, p. 432-444.

Research output: Contribution to journalArticle

Charro, AL, Cabranes, JA, Lafuente, A, Diaz-Salgado, C, Cordero, M, Almoguera, I, Comaru-Schally, AM, Meyers, CA, Coy, DH & Schally, AV 1984, 'Inhibition of growth hormone and glucagon release by Phe-4-somatostatin in patients with acromegaly', Research Communications in Chemical Pathology and Pharmacology, vol. 45, no. 3, pp. 432-444.
Charro AL, Cabranes JA, Lafuente A, Diaz-Salgado C, Cordero M, Almoguera I et al. Inhibition of growth hormone and glucagon release by Phe-4-somatostatin in patients with acromegaly. Research Communications in Chemical Pathology and Pharmacology. 1984 Nov 15;45(3):432-444.
Charro, A. L. ; Cabranes, J. A. ; Lafuente, A. ; Diaz-Salgado, C. ; Cordero, M. ; Almoguera, I. ; Comaru-Schally, A. M. ; Meyers, C. A. ; Coy, D. H. ; Schally, Andrew V. / Inhibition of growth hormone and glucagon release by Phe-4-somatostatin in patients with acromegaly. In: Research Communications in Chemical Pathology and Pharmacology. 1984 ; Vol. 45, No. 3. pp. 432-444.
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