Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)

The ontogenesis of the gastroesophageal mucosa involves morphological alterations related to its structure and the function of each segment. The present study describes the histogenesis of the mucus-secreting epithelium and glands of the esophagus, gizzard, and proventriculus of the chicken (Gallus...

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Autores principales:	Ventura,Adriana, do Nascimento,Aparecida Alves, dos Santos,Marcos Antônio José, Vieira-Lopes,Danielle Alcântara, Sales,Armando, Pinheiro,Nadja Lima
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2013
Materias:	Chicken embryos Development Glycosaminoglycans Esophagus Stomach
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400030
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spelling	oai:scielo:S0717-950220130004000302014-02-18Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)Ventura,Adrianado Nascimento,Aparecida Alvesdos Santos,Marcos Antônio JoséVieira-Lopes,Danielle AlcântaraSales,ArmandoPinheiro,Nadja Lima Chicken embryos Development Glycosaminoglycans Esophagus Stomach The ontogenesis of the gastroesophageal mucosa involves morphological alterations related to its structure and the function of each segment. The present study describes the histogenesis of the mucus-secreting epithelium and glands of the esophagus, gizzard, and proventriculus of the chicken (Gallus gallus), and identifies alterations in the secretion pattern of glycosaminoglycans (GAG's). We analyzed 38 chicken embryos, processed the material collected following the histological routine, and then stained it with hematoxylin-eosin for the analysis of tissue structure and with Gomori's trichrome for the identification of conjunctive tissue and collagen fibers. We used the PAS histochemical technique for the analysis of neutral GAG's and the AB pH 2.5 histochemical technique for the analysis of acid GAG's. The embryos at late stage of development had the esophagus wall composed of four layers: mucosa, submucosa, muscularis, and serosa, whereas the proventriculus and the gizzard were composed of three layers: mucosa, muscularis, and serosa. In all three segments, we identified the superficial epithelium as mucus-secreting; in the esophagus this epithelium was mucus-secreting only at the initial development stages. The proventricular glands began to form at the initial development stages, whereas the tubular glands began to form in the gizzard just after the 15th day. The differences in the production of GAG's in these regions of the digestive tract are related to development stages, functions, and physiological requirements of each segment, and to the gradual adjustment of the body to the post-hatching life.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.31 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400030en10.4067/S0717-95022013000400030
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chicken embryos Development Glycosaminoglycans Esophagus Stomach
spellingShingle	Chicken embryos Development Glycosaminoglycans Esophagus Stomach Ventura,Adriana do Nascimento,Aparecida Alves dos Santos,Marcos Antônio José Vieira-Lopes,Danielle Alcântara Sales,Armando Pinheiro,Nadja Lima Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
description	The ontogenesis of the gastroesophageal mucosa involves morphological alterations related to its structure and the function of each segment. The present study describes the histogenesis of the mucus-secreting epithelium and glands of the esophagus, gizzard, and proventriculus of the chicken (Gallus gallus), and identifies alterations in the secretion pattern of glycosaminoglycans (GAG's). We analyzed 38 chicken embryos, processed the material collected following the histological routine, and then stained it with hematoxylin-eosin for the analysis of tissue structure and with Gomori's trichrome for the identification of conjunctive tissue and collagen fibers. We used the PAS histochemical technique for the analysis of neutral GAG's and the AB pH 2.5 histochemical technique for the analysis of acid GAG's. The embryos at late stage of development had the esophagus wall composed of four layers: mucosa, submucosa, muscularis, and serosa, whereas the proventriculus and the gizzard were composed of three layers: mucosa, muscularis, and serosa. In all three segments, we identified the superficial epithelium as mucus-secreting; in the esophagus this epithelium was mucus-secreting only at the initial development stages. The proventricular glands began to form at the initial development stages, whereas the tubular glands began to form in the gizzard just after the 15th day. The differences in the production of GAG's in these regions of the digestive tract are related to development stages, functions, and physiological requirements of each segment, and to the gradual adjustment of the body to the post-hatching life.
author	Ventura,Adriana do Nascimento,Aparecida Alves dos Santos,Marcos Antônio José Vieira-Lopes,Danielle Alcântara Sales,Armando Pinheiro,Nadja Lima
author_facet	Ventura,Adriana do Nascimento,Aparecida Alves dos Santos,Marcos Antônio José Vieira-Lopes,Danielle Alcântara Sales,Armando Pinheiro,Nadja Lima
author_sort	Ventura,Adriana
title	Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
title_short	Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
title_full	Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
title_fullStr	Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
title_full_unstemmed	Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)
title_sort	histological description of morphogenesis of the gastroesophageal mucosa of gallus gallus domesticus (linnaeus, 1758)
publisher	Sociedad Chilena de Anatomía
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400030
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Histological Description of Morphogenesis of the Gastroesophageal Mucosa of Gallus gallus domesticus (Linnaeus, 1758)

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