Distribution of mucins in the mucosa of the digestive tract of reptiles: a histochemical study

Madrid, Juan Francisco; Ballesta, José Antonio Camacho; Pastor, Luis Miguel; Pérez‐Tomás, Ricardo; Hernández, Francisco Velasco

doi:10.1016/s0065-1281(89)80053-4

Cited by 13 publications

(22 citation statements)

References 23 publications

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“…Estas glândulas intraepiteliais também são descritas no jacaré Caiman latirostris (Machado-Santos et al 2011). Diferente do epitélio esofágico observado na espécie em estudo, em quelônios da família Pelomedusidae (Vogt et al 1998) (Zamith 1952), no lagarto Lacerta lepida (Madrid et al 1989), na tartaruga Kinosternon scorpioides (Pereira et al 2005) e na lagartixa Hermidactylus mabouia (Sartori 2009). …”

Section: Discussionunclassified

“…Glândulas esofágicas na lâmina própria e na submucosa não foram identificadas em P. geoffroanus, esta ausência também é percebida em Mauremys caspica (Madrid et al 1989), A. mississippiensis (Uriona et al 2005), C. latirotris (Machado-Santos et al 2011) e Uromastyx aegyptiaca (Zaher et al 2012). Já na espécie Testudo graeca (Madrid et al 1989) estas glândulas foram observadas.…”

Section: Discussionunclassified

“…São observadas reações positivas a estes protocolos nos epitélios do tubo digestório de outros répteis como A. mississippiensis (Uriona et al 2005), H. mabouia (Sartori 2009), V. niloticus (Ahmed et al 2009), C. latirostris (Machado-Santos et al 2011) e de U. aegyptiaca (Zaher et al 2012). Reação apenas ao PAS é observada nas espécies L. lepida (Madrid et al 1989), Podarcis sicula (Ferri e Liquori 1992), Chalcides chalcides (Ferri et al 1999), K. scorpioides (Pereira et al 2005) e U. aegyptiaca (Zaher et al 2012).…”

Section: Discussionunclassified

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Histologia e histoquímica do tubo digestório de Phrynops geoffroanus (Testudines, Chelidae)

et al. 2014

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. Juiz de Fora, Minas Gerais, Brasil. bernadete.sousa@ufjf.edu.br. RESUMOPhrynops geoffroanus é o quelônio onívoro com mais ampla distribuição geográfica na América do Sul. Este trabalho descreve a histologia e histoquímica do tubo digestório desta espécie, relacionando as características dos órgãos com seu hábito alimentar. O esôfago, estômago e intestino de quatro espécimes foram fixados em formol 10% e incluídos em parafina por técnica histológica de rotina. Depois, cortes de 5 μm de espessura foram corados com hematoxilina-eosina (HE), ácido periódico de Schiff (PAS) e alcian blue (AB) pH 0.4 e 2.5. O tubo é formado pelas camadas mucosa, submucosa, muscular e adventícia ou serosa. A mucosa do esôfago e do estômago é revestida pelo epitélio simples cilíndrico com células mucossecretoras, onde estão inseridas glândulas intraepiteliais na porção do esôfago e fossetas gástricas desembocando em glândulas no estômago. O estômago divide-se em anterior, médio e posterior, de acordo com a profundidade das fossetas e a concentração de glândulas gástricas. O intestino é revestido pelo epitélio simples cilíndrico com borda estriada e células caliciformes e divide-se em anterior e posterior, de acordo com o padrão de dobramentos da mucosa e o número de células caliciformes. Reatividade ao PAS e AB é observada em todo o tubo. Fibras musculares lisas estão presentes na camada mucosa de todos os segmentos. A camada muscular é formada por duas subcamadas de músculo liso, exceto na porção posterior do estômago. Este estudo ajudará no entendimento da fisiologia digestiva da espécie investigada e fornecerá dados para análises comparativas com outros quelônios. PALAVRAS CHAVES: Réptil, esôfago, estômago, intestino, células mucossecretoras. Histology and histochemistry of the digestive tract of Phrynops geoffroanus (Testudines, Chelidae)ABSTRACT Phrynops geoffroanus is the omnivorous chelonian with widest geographical distribution in South America. This work describes the histology and histochemistry of the digestive tube of this species, to relate the characteristics of these organs to the species' eating habit. The esophagus, stomach and intestine of four specimens were fixed in 10% formal and embedded in paraffin by routine histological techniques. Afterwards, 5-μm sections were stained with hematoxylin-eosin (HE), periodic acid-Schiff (PAS) and alcian blue (AB) pH 0.4 and 2.5. The tube is formed by the mucosa, submucosa, muscular and adventitia or serosa layers. The mucosa layer of the esophagus and stomach is lined with a simple cylindrical epithelium with mucus-secreting cells, where are intraepithelial glands inserted in the portion of the esophagus and gastric fossettes emptying into glands in the stomach. The stomach is divided into an anterior, middle and posterior region, according to the depth of the fossettes and the concentration of gastric glands. The intestine is lined by a simple cylindrical epithelium with striated boundaries and goblet cells and is divided into an anterior and posterior regions, according to th...

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Section: Discussionunclassified

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Histologia e histoquímica do tubo digestório de Phrynops geoffroanus (Testudines, Chelidae)

et al. 2014

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“…In the oesophagus, sulphomucins are progressively substituted by sialomucins. Sulphosialomucins are found in Testudo graeca and Mauremys caspica (Madrid et al, 1989), whereas in Clemmys (=Mauremys) japonica there are only sulphomucins (Suganuma et al, 1981). In some turtles the oesophagus presents muciparous, pluricellular glands in the tunica propria (Luppa, 1976;Madrid et al, 1989), but not in T. scripta.…”

Section: Discussionmentioning

confidence: 99%

Histochemical and immunohistochemical characterization of exocrine cells in the foregut of the red-eared slider turtle, Trachemys scripta (Emydidae)

Scillitani

Liquori

Mastrodonato

et al. 2008

Arch. Histol. Cytol.

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have a secretion similar to that of the neck cells of the fundic glands, consisting of stable, class-III mucins mostly sialylated with a high heterogeneity of residuals such as glucose and/or mannose, fucose, GlcNAc, and GalNAc. Mucins in the foregut are probably involved in several functions such as lubrication, protection against gastric juice, osmotic regulation to increase intestinal absorption, and protection against microbial injuries.

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“…A large number of works are devoted to study of stomach wall structures in pathology [83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98] and in experiment under influence of exogenous and endogenous factors [52,[99][100][101], while peculiarities of its age-related morphology remain much less informative. In the predominant part of morphological studies structural peculiarities of stomach of laboratory animals and wild animals are revealed [102][103][104][105][106][107][108][109][110][111][112][113].…”

Section: Introductionmentioning

confidence: 99%

Morphogenesis of Gastric Tissular Components and Immune Structures in Piglets

Gavrilina¹,

Gavrilin²

2018

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The monograph analyzes the problem of postnatal morphogenesis of tissue components, immune structures and lymphatic vessels of the stomach of piglets. It is established that the degree of differentiation and specialization of the main structures of the stomach wall in newborn piglets depends on their body weight (conformity of newborn piglets body weight to the breed standard). The results of analysis of the age-related changes of the main components of the porcine stomach wall in early postnatal ontogenesis are presented. The features of growth and development of immune structures of piglets gastric mucosa, lymphatic vessels and gastric lymph nodes during postnatal adaptation are interpretated.For scientists, lecturers and post-graduate students in the field of veterinary medicine, biotechnology and biology.

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Distribution of mucins in the mucosa of the digestive tract of reptiles: a histochemical study

Cited by 13 publications

References 23 publications

Histologia e histoquímica do tubo digestório de Phrynops geoffroanus (Testudines, Chelidae)

Histologia e histoquímica do tubo digestório de Phrynops geoffroanus (Testudines, Chelidae)

Histochemical and immunohistochemical characterization of exocrine cells in the foregut of the red-eared slider turtle, Trachemys scripta (Emydidae)

Morphogenesis of Gastric Tissular Components and Immune Structures in Piglets

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