Urocortin (UCN) is a 40-amino-acid peptide and a member of the corticotropin-releasing hormone (CRH) family, which includes CRH, urotensin I, sauvagine, UCN2 and UCN3. The biological actions of CRH family peptides are mediated via two types of G-protein-coupled receptors, namely CRH type 1 receptor (CRHR1) and CRH type 2 receptor (CRHR2). The biological effects of these peptides are mediated and modulated not only by CRH receptors but also via a highly conserved CRH-binding protein (CRHBP). Our aim was to investigate the expression of UCN, CRHR1, CRHR2 and CRHBP by immunohistochemistry, Western blot and reverse transcription with the polymerase chain reaction (RT-PCR) in the horse thyroid gland. The results showed that UCN, CRHR1 and CRHR2 were expressed in the thyroid gland, whereas CRHBP was not expressed. Specifically, UCN immunoreactivity (-IR) was found in the thyroid follicular cells, CRHR2-IR in the C-cells and CRHR1-IR in blood vessels. Western blot analysis and RT-PCR experiments confirmed the immunohistochemical data. These results suggest that a regulatory system exists in the mammalian thyroid gland based on UCN, CRHR1 and CRHR2 and that UCN plays a role in the regulation of thyroid physiological functions through a paracrine mechanism.

Expression of urocortin and corticotropin-releasing hormone receptors in the horse thyroid gland / Squillacioti, Caterina; DE LUCA, Adriana; Ali', Sabrina; Paino, S; Liguori, Giovanna; Mirabella, Nicola. - In: CELL AND TISSUE RESEARCH. - ISSN 0302-766X. - 350:1(2012), pp. 45-53. [10.1007/s00441-012-1450-4]

Expression of urocortin and corticotropin-releasing hormone receptors in the horse thyroid gland

SQUILLACIOTI, CATERINA;DE LUCA, ADRIANA;ALI', SABRINA;LIGUORI, GIOVANNA;MIRABELLA, NICOLA
2012

Abstract

Urocortin (UCN) is a 40-amino-acid peptide and a member of the corticotropin-releasing hormone (CRH) family, which includes CRH, urotensin I, sauvagine, UCN2 and UCN3. The biological actions of CRH family peptides are mediated via two types of G-protein-coupled receptors, namely CRH type 1 receptor (CRHR1) and CRH type 2 receptor (CRHR2). The biological effects of these peptides are mediated and modulated not only by CRH receptors but also via a highly conserved CRH-binding protein (CRHBP). Our aim was to investigate the expression of UCN, CRHR1, CRHR2 and CRHBP by immunohistochemistry, Western blot and reverse transcription with the polymerase chain reaction (RT-PCR) in the horse thyroid gland. The results showed that UCN, CRHR1 and CRHR2 were expressed in the thyroid gland, whereas CRHBP was not expressed. Specifically, UCN immunoreactivity (-IR) was found in the thyroid follicular cells, CRHR2-IR in the C-cells and CRHR1-IR in blood vessels. Western blot analysis and RT-PCR experiments confirmed the immunohistochemical data. These results suggest that a regulatory system exists in the mammalian thyroid gland based on UCN, CRHR1 and CRHR2 and that UCN plays a role in the regulation of thyroid physiological functions through a paracrine mechanism.
2012
Expression of urocortin and corticotropin-releasing hormone receptors in the horse thyroid gland / Squillacioti, Caterina; DE LUCA, Adriana; Ali', Sabrina; Paino, S; Liguori, Giovanna; Mirabella, Nicola. - In: CELL AND TISSUE RESEARCH. - ISSN 0302-766X. - 350:1(2012), pp. 45-53. [10.1007/s00441-012-1450-4]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/460905
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