open access

Vol 49, No 2 (2011)
Original paper
Published online: 2011-07-11
Submitted: 2011-12-19
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The immunohistochemical demonstration of parafollicular cells and evaluation of calcium-phosphate balance in patients with thyroid hemiagenesis

Marek Ruchala, Ewelina Szczepanek, Patrycja Sujka-Kordowska, Maciej Zabel, Maciej Biczysko, Jerzy Sowinski
DOI: 10.5603/FHC.2011.0042
·
Folia Histochem Cytobiol 2011;49(2):299-305.

open access

Vol 49, No 2 (2011)
ORIGINAL PAPERS
Published online: 2011-07-11
Submitted: 2011-12-19

Abstract

Thyroid hemiagenesis (TH) is characterized by the congenital absence of one thyroid lobe. The aim of this study was to evaluate the calcium-phosphate balance in TH. Twenty patients with TH and 20 controls with a bilobed thyroid were studied. Serum concentrations of total calcium, parathormon and calcitonin were measured. Additionally, the immunohistochemical expression of calcitonin, chromogranin A (chA), neuron-specific enolase (NSE) and calcitonin gene-related peptide (CGRP) was evaluated in surgical specimens from patients with TH and controls. There were no significant differences in biochemical parameters between TH and controls. Positive staining for calcitonin was demonstrated in 3/8 thyroid sections from three patients with TH, but only in 2/33 sections from four controls (p < 0.005). All sections from patients with TH positive for calcitonin also expressed chA, NSE and CGRP. Two sections from controls positive for calcitonin presented an additionally positive reaction for chA, and one of them also for NSE. None presented positive staining for CGRP. Of three TH sections, in one, hyperplasia of C cells of medium grade, and in another hyperplasia of C cells of high grade, could be detected. In the controls, hyperplasia of C cells of low and medium grade was observed. TH was associated with slightly enhanced C cells hyperplasia compared to controls, which might indicate compensatory proliferation. However, the calcium-phosphate balance does not seem to be significantly affected. (Folia Histochemica et Cytobiologica 2011; Vol. 49, No. 2, pp. 299–305)

Abstract

Thyroid hemiagenesis (TH) is characterized by the congenital absence of one thyroid lobe. The aim of this study was to evaluate the calcium-phosphate balance in TH. Twenty patients with TH and 20 controls with a bilobed thyroid were studied. Serum concentrations of total calcium, parathormon and calcitonin were measured. Additionally, the immunohistochemical expression of calcitonin, chromogranin A (chA), neuron-specific enolase (NSE) and calcitonin gene-related peptide (CGRP) was evaluated in surgical specimens from patients with TH and controls. There were no significant differences in biochemical parameters between TH and controls. Positive staining for calcitonin was demonstrated in 3/8 thyroid sections from three patients with TH, but only in 2/33 sections from four controls (p < 0.005). All sections from patients with TH positive for calcitonin also expressed chA, NSE and CGRP. Two sections from controls positive for calcitonin presented an additionally positive reaction for chA, and one of them also for NSE. None presented positive staining for CGRP. Of three TH sections, in one, hyperplasia of C cells of medium grade, and in another hyperplasia of C cells of high grade, could be detected. In the controls, hyperplasia of C cells of low and medium grade was observed. TH was associated with slightly enhanced C cells hyperplasia compared to controls, which might indicate compensatory proliferation. However, the calcium-phosphate balance does not seem to be significantly affected. (Folia Histochemica et Cytobiologica 2011; Vol. 49, No. 2, pp. 299–305)
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Keywords

immunohistochemistry; parafollicular cells; calcium-phosphate balance; thyroid hemiagenesis

About this article
Title

The immunohistochemical demonstration of parafollicular cells and evaluation of calcium-phosphate balance in patients with thyroid hemiagenesis

Journal

Folia Histochemica et Cytobiologica

Issue

Vol 49, No 2 (2011)

Article type

Original paper

Pages

299-305

Published online

2011-07-11

DOI

10.5603/FHC.2011.0042

Bibliographic record

Folia Histochem Cytobiol 2011;49(2):299-305.

Keywords

immunohistochemistry
parafollicular cells
calcium-phosphate balance
thyroid hemiagenesis

Authors

Marek Ruchala
Ewelina Szczepanek
Patrycja Sujka-Kordowska
Maciej Zabel
Maciej Biczysko
Jerzy Sowinski

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