Expression of somatostatin and dopamine receptors in ACTH-producing tumours

Autor: Iu A Ablitsov, N P Goncharov, Anastasia M. Lapshina, A Iu Abrosimov, Ivan Ivanovich Dedov, N S Kuznetsov, Svetlana Arapova, Marova Ei, L Ia Rozhinskaia, A Iu Grigor'ev
Rok vydání: 2010
Předmět:
Zdroj: Problems of Endocrinology. 56:14-18
ISSN: 2308-1430
0375-9660
DOI: 10.14341/probl201056114-18
Popis: This study was designed to compare immunoexpression of somatostatin receptors (SR)1-5 and dopamine receptors 2 (DR2) in pituitary and non-pituitary ectopic ACTH-producing tumours. A total of 35 patients were enrolled in the study including 21 with Cushing's disease (CD) and 14 with ACTH-ectopic syndrome (ACTH-ES) associated with carcinoid tumours of lungs (n=11), kidney (n=1), thymus (n=1) and with small-cell lung carcinoma (n=1). All patients with corticotropinomas exhibited expression of SR 1-5 dominated by SR-1 (57%). 81% of these tumours expressed two and more SR subtypes. DR2 expression was documented in 52% of the tumours and co-expression of DR2 with different SR subtypes in 29%. Neoplasms associated with ACTH-ES expressed SR with the predominance of SR-3 (72%). Half of these tumours co-expressed two and more SR subtypes. Expression of DR2 was demonstrated in 50% of the neoplasms associated with ACTH-ES; 38% of them co-expressed SR and DF2.
Databáze: OpenAIRE