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High Expression of Somatostatin Receptors 2A, 3, and 5 in Corticotroph Pituitary Adenoma
Joint Authors
Tatagiba, Marcos
Behling, Felix
Honegger, Jürgen
Skardelly, Marco
Gepfner-Tuma, Irina
Tabatabai, Ghazaleh
Schittenhelm, Jens
Source
International Journal of Endocrinology
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-09
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The development of somatostatin analogs for the treatment of pituitary Cushing’s disease has been based on somatostatin receptor expression analyses of small cohorts of pituitary adenomas.
Additionally, the classification of pituitary adenomas has recently changed.
To enable progress with this treatment option, we assessed somatostatin receptors in a large cohort of corticotroph and other pituitary adenomas according to the new WHO classification of endocrine tumors.
Paraffin-embedded tumor samples of 88 corticotroph pituitary adenomas and 30 nonadenomatous pituitary biopsies were analyzed after processing into tissue microarrays and immunohistochemical staining for SSTR 1, SSTR2A, SSTR3, SSTR4, and SSTR5.
For comparison, 159 other noncorticotroph pituitary adenomas were analyzed.
SSTR3 expression was higher in corticotroph adenomas compared to PIT-1-positive, gonadotroph, and nonfunctioning pituitary adenomas (p<0.0001, p=0.0280, and p<0.0001, respectively).
This was also the case for the expression of SSTR5 (p=0.0003, p<0.0001, and p<0.0001, respectively).
SSTR2A expression was higher compared to gonadotroph and nonfunctioning pituitary adenomas (p=0.0217 and 0.0126, respectively) while PIT-1-positive adenomas showed even higher SSTR2A expression (p<0.0001).
SSTR2A and SSTR5 were both expressed higher in nonadenomatous pituitary biopsies than in pituitary adenomas (p=0.0126 and p=0.0008, respectively).
There are marked expression differences of SSTR1-5 as well as changes in expression in recurrent disease that need to be addressed when looking for other possible substances for the treatment of Cushing’s disease.
SSTR2A, SSTR3, and SSTR5 seem to be most suitable biomarkers for a targeted therapy with somatostatin analogs.
American Psychological Association (APA)
Behling, Felix& Honegger, Jürgen& Skardelly, Marco& Gepfner-Tuma, Irina& Tabatabai, Ghazaleh& Tatagiba, Marcos…[et al.]. 2018. High Expression of Somatostatin Receptors 2A, 3, and 5 in Corticotroph Pituitary Adenoma. International Journal of Endocrinology،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1171054
Modern Language Association (MLA)
Behling, Felix…[et al.]. High Expression of Somatostatin Receptors 2A, 3, and 5 in Corticotroph Pituitary Adenoma. International Journal of Endocrinology No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1171054
American Medical Association (AMA)
Behling, Felix& Honegger, Jürgen& Skardelly, Marco& Gepfner-Tuma, Irina& Tabatabai, Ghazaleh& Tatagiba, Marcos…[et al.]. High Expression of Somatostatin Receptors 2A, 3, and 5 in Corticotroph Pituitary Adenoma. International Journal of Endocrinology. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1171054
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1171054