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Type: Artigo de periódico
Title: Influence Of Different Decalcifying Agents On Egf And Egfr Immunostaining.
Author: Neves, Juliana Dos Santos
Omar, Nádia Fayez
Narvaes, Eliene Aparecida Orsini
Gomes, José Rosa
Novaes, Pedro Duarte
Abstract: This study was designed to verify the influence of three demineralizing agents on EGF and EGFR immunostaining as well as on tissue morphology. We chose submandibular glands that are a source of EGF and its receptor and which could be analyzed using a control in which the decalcification step was not carried out. After sacrifice of adult male Wistar rats by perfusion fixation, the submandibular glands and mandibles were excised and placed together in each of the following solutions: (a) 5% nitric acid in 4% formaldehyde; (b) 4.13% EDTA pH 7.4; (c) 5% trichloroacetic acid. Mandibles served as a parameter for decalcification time in each demineralizing solution. A control group was performed with submandibular glands that were not placed in any demineralizing solution. After mandibles were completely decalcified, glands were processed by embedding in Paraplast® and immunohistochemical staining was made to detect EGF and EGFR. It was observed that decalcification did not produce noticeable differences in terms of EGF and EGFR immunoreactivity, but had an effect on the quality of the morphology and staining. Our results indicate there is no problem performing immunostaining of EGF and EGFR in tissues that require decalcification. 4.13% EDTA (pH 7.4) is the best choice for decalcification in cases that are not urgent.
Subject: Animals
Decalcification Technique
Edetic Acid
Epidermal Growth Factor
Nitric Acid
Rats, Wistar
Receptor, Epidermal Growth Factor
Sensitivity And Specificity
Staining And Labeling
Submandibular Gland
Tissue Fixation
Trichloroacetic Acid
Citation: Acta Histochemica. v. 113, n. 4, p. 484-8, 2011-Jul.
Rights: fechado
Identifier DOI: 10.1016/j.acthis.2010.04.006
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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