open access

Vol 64, No 3 (2013)
Original papers
Published online: 2013-07-01
Submitted: 2013-07-31
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Pendrin expression in nodular and non-nodular thyroid tissues

Berna Temel, Nurdan Gul, Faruk Kutluturk, Yersu Kapran, Sema Sirma, Duran Ustek, Fatih Tunca, Yasemin Giles, Faruk Alagol
Endokrynologia Polska 2013;64(3):208-214.

open access

Vol 64, No 3 (2013)
Original papers
Published online: 2013-07-01
Submitted: 2013-07-31

Abstract


Introduction: Different mechanisms for the expression of pendrin which is an apical iodide transporter have been reported in nodular thyroid tissues compared to normal thyroid. The aim of the present study was to determine the alterations of pendrin expression in nodular and surrounding non-nodular thyroid tissues and clarify the role of pendrin in the functional behaviour of nodular lesions.
Material and methods: Twenty-six nodular and paired non-nodular normal thyroid tissues were collected at the same centre. Patients were divided into two groups based on the function of the dominant thyroid nodule; hot nodules (n = 18) and cold nodules (n = 8). mRNA levels of pendrin were evaluated by quantitative RT-PCR. Pendrin protein expression was determined by immunohistochemical analysis. Results of dominant nodules were compared to non-nodular thyroid tissue of the same patient.
Results: No statistically significant difference was found with respect to qualitative and quantitative measurements of pendrin expression between hot and cold nodules. However, percent immunohistochemical staining of pendrin was significantly higher in both hot and cold nodules compared to non-nodular thyroid tissue of the same patients. RT-PCR revealed comparable mRNA levels of pendrin gene between hot nodules and corresponding normal thyroid tissues. However, in cold nodules, significantly decreased mRNA levels of pendrin were observed compared to normal thyroid tissue. mRNA levels of pendrin showed significant positive correlation with TSH in corresponding non-nodular thyroid tissues.
Conclusions: The present study demonstrates that expression of pendrin could not be influenced by TSH in thyroid nodules and expression level of pendrin seems not to have an effect on nodule function. (Endokrynol Pol 2013; 64 (3): 208–214)

Abstract


Introduction: Different mechanisms for the expression of pendrin which is an apical iodide transporter have been reported in nodular thyroid tissues compared to normal thyroid. The aim of the present study was to determine the alterations of pendrin expression in nodular and surrounding non-nodular thyroid tissues and clarify the role of pendrin in the functional behaviour of nodular lesions.
Material and methods: Twenty-six nodular and paired non-nodular normal thyroid tissues were collected at the same centre. Patients were divided into two groups based on the function of the dominant thyroid nodule; hot nodules (n = 18) and cold nodules (n = 8). mRNA levels of pendrin were evaluated by quantitative RT-PCR. Pendrin protein expression was determined by immunohistochemical analysis. Results of dominant nodules were compared to non-nodular thyroid tissue of the same patient.
Results: No statistically significant difference was found with respect to qualitative and quantitative measurements of pendrin expression between hot and cold nodules. However, percent immunohistochemical staining of pendrin was significantly higher in both hot and cold nodules compared to non-nodular thyroid tissue of the same patients. RT-PCR revealed comparable mRNA levels of pendrin gene between hot nodules and corresponding normal thyroid tissues. However, in cold nodules, significantly decreased mRNA levels of pendrin were observed compared to normal thyroid tissue. mRNA levels of pendrin showed significant positive correlation with TSH in corresponding non-nodular thyroid tissues.
Conclusions: The present study demonstrates that expression of pendrin could not be influenced by TSH in thyroid nodules and expression level of pendrin seems not to have an effect on nodule function. (Endokrynol Pol 2013; 64 (3): 208–214)
Get Citation

Keywords

pendrin; expression; nodular thyroid disease

About this article
Title

Pendrin expression in nodular and non-nodular thyroid tissues

Journal

Endokrynologia Polska

Issue

Vol 64, No 3 (2013)

Pages

208-214

Published online

2013-07-01

Bibliographic record

Endokrynologia Polska 2013;64(3):208-214.

Keywords

pendrin
expression
nodular thyroid disease

Authors

Berna Temel
Nurdan Gul
Faruk Kutluturk
Yersu Kapran
Sema Sirma
Duran Ustek
Fatih Tunca
Yasemin Giles
Faruk Alagol

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