Acid and alkaline phosphatase localization in the digestive tract mucosa of the Hemisorubim platyrhynchos.

Autor: Faccioli CK; Federal University of Uberlândia - UFU, Institute of Biomedical Sciences, 1720 Pará Avenue, 38.400-902, Uberlândia, MG, Brazil; São Paulo State University - UNESP, Institute of Biosciences, Letter and Exact Sciences, 2265 Cristovão Colombo Street, 15054-000, São José do Rio Preto, SP, Brazil. Electronic address: claudemirkf@ufu.br., Chedid RA; São Paulo State University - UNESP, Department of Biological Sciences, Faculty of Sciences, 14-01 Engenheiro Luiz Edmundo Carrijo Coube Avenue, 17033-360, Bauru, SP, Brazil; São Paulo State University - UNESP, Aquaculture Center of UNESP - CAUNESP, Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900 Jaboticabal, SP, Brazil., Mori RH; São Paulo State University - UNESP, Department of Biological Sciences, Faculty of Sciences, 14-01 Engenheiro Luiz Edmundo Carrijo Coube Avenue, 17033-360, Bauru, SP, Brazil; São Paulo State University - UNESP, Aquaculture Center of UNESP - CAUNESP, Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900 Jaboticabal, SP, Brazil., Amaral AC; São Paulo State University - UNESP, Department of Biological Sciences, Faculty of Sciences, 14-01 Engenheiro Luiz Edmundo Carrijo Coube Avenue, 17033-360, Bauru, SP, Brazil., Franceschini-Vicentini IB; São Paulo State University - UNESP, Department of Biological Sciences, Faculty of Sciences, 14-01 Engenheiro Luiz Edmundo Carrijo Coube Avenue, 17033-360, Bauru, SP, Brazil., Vicentini CA; São Paulo State University - UNESP, Department of Biological Sciences, Faculty of Sciences, 14-01 Engenheiro Luiz Edmundo Carrijo Coube Avenue, 17033-360, Bauru, SP, Brazil.
Jazyk: angličtina
Zdroj: Acta histochemica [Acta Histochem] 2016 Sep; Vol. 118 (7), pp. 722-728. Date of Electronic Publication: 2016 Aug 07.
DOI: 10.1016/j.acthis.2016.08.001
Abstrakt: This cytochemical study investigated the acid and alkaline phosphatase of the digestive tract of Hemisorubim platyrhynchos. Acid phosphatase was detected in the lining epithelium throughout the digestive tract, whereas alkaline phosphatase was only observed in the intestine. In the esophagus, an acid phosphatase reaction occurred in the apical cytoplasm of the epithelial cells and was related to epithelial protection and freeing of superficial cells for sloughing. Similar results were also observed in epithelial cells of gastric epithelium. In the gastric glands, acid phosphatase occurred in lysosomes of the oxynticopeptic cells acting in the macromolecule degradation for use as an energy source, whereas in the vesiculotubular system, its presence could be related to secretion processes. Furthermore, acid phosphatase in the intestine occurred in microvilli and lysosomes of the enterocytes and was correlated to absorption and intracellular digestion. However, no difference was reported among the regions of the intestine. However, alkaline phosphatase reaction revealed a large number of reaction dots in the anterior intestine, with the number decreasing toward the posterior intestine. This enzyme has been related to several functions, highlighting its role in the nutrient absorption primarily in the anterior intestine but also being essential in pH regulation because this is a carnivorous species with many gastric glands with secretions that could damage the intestine.
(Copyright © 2016 Elsevier GmbH. All rights reserved.)
Databáze: MEDLINE
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