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. 1991 May;138(5):1267–1272.

Somatostatin receptors in differentiated ovarian tumors.

J C Reubi 1, U Horisberger 1, J G Klijn 1, J A Foekens 1
PMCID: PMC1886021  PMID: 1850962

Abstract

The presence of somatostatin receptors was investigated in 57 primary human ovarian tumors using in vitro receptor autoradiography with three different somatostatin radioligands, 125I-[Tyr11]-somatostatin-14, 125I-[Leu8, D-Trp22, Tyr25]-somatostatin-28, or 125I-[Tyr3]-SMS 201-995. Three cases, all belonging to epithelial tumors, were receptor positive; specifically 1 of 42 adenocarcinomas, 1 of 3 borderline malignancies, and 1 of 2 cystadenomas. Four other epithelial tumors (3 fibroadenomas, 1 Brenner tumor), 4 sex cord-stromal tumors (2 fibrothecomas, 2 granulosa cell tumors), and 2 germ cell tumors (1 dysgerminoma, 1 teratoma) were receptor negative. In the positive cases, the somatostatin receptors were localized on epithelial cells exclusively, were of high affinity (KD = 4.6 nmol/l [nanomolar]), and specific for somatostatin analogs. These receptors bound somatostatin-14 and somatostatin-28 radioligands with a higher affinity than the octapeptide [Tyr3]-SMS 201-995. Healthy ovarian tissue had no somatostatin receptors. A subpopulation of relatively well-differentiated ovarian tumors, therefore, was identified pathobiochemically on the basis of its somatostatin receptor content. This small group of somatostatin receptor-positive tumors may be a target for in vivo diagnostic imaging with somatostatin ligands.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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