scholarly journals Morphological characteristics of the digestive tract of Schizodon knerii (Steindachner, 1875), (Characiformes: Anostomidae): An anatomical, histological and histochemical study

2015 ◽  
Vol 87 (2) ◽  
pp. 867-878 ◽  
Author(s):  
Marcella L. Dos Santos ◽  
Fábio P. Arantes ◽  
Kleber B. Santiago ◽  
José E. Dos Santos
Keyword(s):  
Digestive Tract ◽  
Squamous Epithelium ◽  
Feeding Habits ◽  
Morphological Characteristics ◽  
Goblet Cells ◽  
Taste Buds ◽  
Mucous Cells ◽  
Pyloric Region ◽  
Mucosal Cells ◽  
Stratified Squamous Epithelium

The digestive tracts of 44 specimens of Schizodon knerii were studied using anatomical, histological and histochemical techniques. The mouth has terminal position, the lip epithelium is squamous stratified with mucous, claviform cells and taste buds, teeth have an incisive form and the tongue has a stratified squamous epithelium with mucous cells and taste buds. The oropharynx cavity is formed by gill apparatus and pharyngeal teeth. The oesophagus presented pleated mucosa, a stratified squamous epithelium with mucous cells, oesophageal glands and taste buds. The stomach presented cardiac, fundic and pyloric regions, simple prismatic epithelium with tubular glands, with none in the pyloric region. The intestine contains 11-15 pyloric caeca, a simple prismatic epithelium with brush border, goblet cells and lymphocytes. Mucosal cells, oesophageal glands and goblet cells reacted positively to PAS, amylase + PAS, Ab pH 2.5 and Ab pH 0.5. Gastric prismatic cells reacted positively to PAS, amylase + PAS, but only those in the pyloric region reacted positively to Ab pH 2.5 and Ab pH 0.5. The results improve the understanding of the anatomy of S. knerii feeding habits and the presence of mucosubstances in the epithelium, highlights the importance of glycoproteins for passing food through the digestive tract.

scholarly journals 31. Histological of Tractus Digestivus of Domestical Catfish (Clarias batracus)

2019 ◽  
Vol 13 (2) ◽  
Author(s):  
Aliman Irfandi ◽  
Cut Dahlia Iskandar ◽  
Zainuddin Zainuddin ◽  
Dian Masyitha ◽  
Fitriani Fitriani ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Blood Vessels ◽  
Lamina Propria ◽  
Alimentary Tract ◽  
Squamous Epithelium ◽  
Goblet Cells ◽  
Taste Buds ◽  
Muscularis Mucosa ◽  
Club Cells ◽  
Stratified Squamous Epithelium

Domestical catfish is grouped into omnivora, although the fish is tended into carnivora.  The aim of the present study was to investigate histology of alimentary tract of domestical catfish (Clarias batrachus). In order to determine alimentary tract of domestical catfish, oesophagus, gastric and intestines is investigated by Haematoxilin Eosin. Histology exploration was performed each layer of alimentary tract’s wall consist of lamina epithelia, propria, and muscularis mucosa. Collagen connective tissue was developed tunica submucosa. The muscle of tunica muscularis was performed circular and elongated. Dense connective tissue and blood vessels was located in the tunica serosa. Histology exploration revealed has stratified squamous epithelium, mucosit cells, eosinophilic club cells on the lamina epithelia, and taste buds on the lamina propria in oesophagus. Gastric was establised simple prismatic cells, and glands of gastric on the lamina propria. Furthermore intestine was showed villi and goblet cells. There were not showed Brunner and Liberkhun gland. In conclusion, histology of alimentary tract was revealed from tunica mucosa, submucosa, and serosa.

The effects of Salmincola californiensis (Copepoda: Lernaeopodidae) on the gills of farm-raised rainbow trout, Salmo gairdneri

1985 ◽  
Vol 63 (12) ◽  
pp. 2893-2901 ◽  
Author(s):  
Daniel R. Sutherland ◽  
Darwin D. Wittrock
Keyword(s):  
Squamous Epithelium ◽  
Gill Filament ◽  
Salmo Gairdneri ◽  
Mucous Cells ◽  
Tissue Sections ◽  
Adult Females ◽  
Feeding Activities ◽  
Gill Filaments ◽  
Stratified Squamous Epithelium ◽  
Hematoxylin And Eosin

Salmo gairdneri from an Iowa trout farm were found to be infested with Salmincola californiensis. Examination of gills from 235 trout revealed a prevalence of 83% and a mean intensity of 4.6 copepods. Preferred sites were established with the adult female attached usually on distal ends of the gill filaments or on gill bars and the chalimus attached to proximal regions of gill filaments. Examination of hematoxylin and eosin stained tissue sections of attached adult females revealed hyperplasia and hypertrophy ("tumor of attachment") and atrophy or growth inhibition ("crypting") of affected gill filaments. Eosinophilia and absence of mucous cells occurred in gill filaments affected by feeding activities and bulla attachment. Hyperplasia of the gill filament cartilaginous rod and resulting formation of a cartilaginous "bridge" between bulla and filament rod is described. Chalimus attachment elicited hyperplasia and frequently fusion of basal elements of adjacent gill filaments. Activities of adult females attached to gill bars resulted in proliferation of stratified squamous epithelium, infiltration of granular leucocytes and reduction of mucous cells. Damage to gill tissues of trout maintained in dense populations offish culture is deemed significant, especially during summer periods of low dissolved oxygen.

scholarly journals Pathogenesis of Digestive Tract Lesions in Duck Plague

1975 ◽  
Vol 12 (5-6) ◽  
pp. 349-361 ◽  
Author(s):  
S. J. Proctor
Keyword(s):  
Epithelial Cells ◽  
Digestive Tract ◽  
Squamous Epithelium ◽  
Fluorescent Microscopy ◽  
Intestinal Crypt ◽  
Viral Antigens ◽  
Cytoplasmic Vacuoles ◽  
Submucosal Glands ◽  
Stratified Squamous Epithelium ◽  
Viral Maturation

White Pekin ducklings were inoculated orally with duck plague virus. Tissues from the digestive tract were collected daily after inoculation and examined by light, electron and fluorescent microscopy. There were necrosis and degeneration of stratified squamous epithelium of the esophagus and cloaca, epithelium of intestinal crypt and esophageal submucosal glands, macrophages in the lamina propria, and submucosal fibrocytes and lymphocytes. Submucosal hemorrhages occurred after degeneration and necrosis of lymphocytes, macrophages, fibrocytes and epithelial cells. Viral antigens were detected in all these cells by use of fluorescein-labeled antibodies. With the electron microscope, nucleocapsids were seen in the nuclei, budding through the inner nuclear membrane; enveloped virions were present in cytoplasmic vacuoles of macrophages, epithelial cells and fibrocytes. In lymphocytes, nucleocapsids were also in the nuclei, but karyorrhexis and cytolysis occurred before viral maturation was completed.

Lateral Cervical (Branchial) Cyst Epithelia Express Upper Digestive Tract-Type Cytokeratins

1988 ◽  
Vol 97 (4) ◽  
pp. 365-372 ◽  
Author(s):  
Gerd Artur Wild ◽  
Gabriele Wille ◽  
Dietmar Mischke
Keyword(s):  
Digestive Tract ◽  
Gel Electrophoresis ◽  
Alternative Model ◽  
Squamous Epithelium ◽  
Target Tissue ◽  
Neck Lymph Node ◽  
Palatine Tonsils ◽  
Upper Digestive Tract ◽  
Stratified Squamous Epithelium ◽  
Cervical Cysts

The epithelial lining of lateral cervical cysts (LCCs) was analyzed for keratin polypeptide composition by means of high resolution gel electrophoresis and immunoblotting using polyclonal rabbit antikeratin antisera of defined specificity. The keratin phenotype expressed in branchial mass epithelia was found to be homologous to the profiles obtained for the squamous epithelium of corresponding palatine tonsils, but was clearly different from related polypeptide complements of both epidermis and simple (columnar) epithelium. The presence of particular keratin members (pairs 5/14 and 4/13) strongly indicates that branchial mass inner lining derives from keratinocytes that are programmed to form a stratified squamous epithelium and reveal, at least biochemically, an upper digestive tract or esophageal type of differentiation. On the basis of these data and the recent finding that a neck lymph node is involved as a target tissue in LCC formation, hypotheses concerning branchial mass histogenesis in general appear to be highly unsettled. We propose an alternative model that may explain the conflicting clinical, anatomic, and morphologic findings associated with LCC disease.

scholarly journals Histological structure of the digestive tract and digestive enzymatic activity of juvenile Pacific seahorse (Hippocampus ingens)

2021 ◽  
Vol 49 (4) ◽  
pp. 565-575
Author(s):  
Daniela Corona-Rojas ◽  
Renato Peña ◽  
Carmen Rodríguez-Jaramillo ◽  
Dariel Tovar-Ramírez ◽  
Patricia Hinojosa-Baltazar
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
Enzymatic Activity ◽  
Digestive Tract ◽  
Goblet Cells ◽  
Histological Structure ◽  
Activity Levels ◽  
Mucous Cells ◽  
Low Levels ◽  
Acid Mucins

The histological structure, histochemical features, and enzymatic activity of the digestive tract of juvenile Pacific seahorse (Hippocampus ingens) are described to provide information during the cultivation of this species. Serial histological sections were stained with either hematoxylin-eosin, alcian blue-PAS, toluidine blue, Sudan black, Masson's trichome, and ninhydrin-Schiff to describe the general features and the presence of glycogen, mucopolysaccharides, lipids, muscle layers, and proteins, respectively. The enterocytes height and the mucosal villi height in the esophagus and intestines were measured. Additionally, the digestive enzymes trypsin, chymotrypsin, lipase, amylase, aminopeptidase, acid phosphatase, and alkaline phosphatase activities were recorded. The esophagus showed two distinctive regions, the anterior with numerous mucous cells secreting acid mucins and the posterior with longitudinal folds and no mucous cells. The intestine was differentiated into three regions. The anterior showed goblet cells secreting acid and neutral mucins, while the middle and posterior regions presented goblet cells secreting only acid mucins. The activity of aminopeptidase, chymotrypsin, and amylase showed low levels, while the trypsin and acid phosphatase activity levels were intermediate. Lipase and alkaline phosphatase showed the highest activities. The results point that juvenile H. ingens presents a digestive structure similar to other teleost species. The high levels of lipase suggest that juvenile H. ingens have high requirements for lipids during this stage.

scholarly journals Analysis of pathohistological characteristics of pterygium

2010 ◽  
Vol 10 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Boban Džunić ◽  
Predrag Jovanović ◽  
Dragan Veselinović ◽  
Aleksandar Petrović ◽  
Ivan Stefanović ◽  
...  
Keyword(s):  
Blood Vessels ◽  
Basal Lamina ◽  
Squamous Epithelium ◽  
Morphological Characteristics ◽  
Structural Basis ◽  
Surgical Removal ◽  
Conjunctival Epithelium ◽  
Stratified Squamous Epithelium ◽  
Recurrence Tendency ◽  
Hematoxylin Eosin

Pterygium internum (external eye layer) shows great recurrence tendency after surgical removal. Its etiology is still unclear and represents a significant problem. The main goal of our study was to explore the interrelationships of pathohistological characteristics of pterygium, namely presence of inflammation, vascularisation degree and fibrinoid changes and on the basis of their analysis to test the possibility of predicting its evolution and recurrence. The analysis was performed on the material taken from 55 patients surgically treated by the technique of Arlt. The specimens were stained using the classical histochemical methods: hematoxylin-eosin (HE), Masson’s trichrome, Gomori’s reticulin stain and PAS technique. Pterygium is mostly covered by conjunctival epithelium, while in the cap region shows morphology of modified stratified squamous epithelium of the cornea. Structural basis of the epithelium is composed of continuous basal lamina and continuous connective fibers underneath. This connective basis shows fibrinoid changes in the form of oval islets of different size, parallel to convexity of pterygium, or is in the form of unified focus. The number, caliber and the type of blood vessels showed excessive variability.Pathohistological analysis of morphological characteristics of pterygium is adequate basis for prediction of recurrences; as they present the biggest concern in treatment of this widely spread disease.

scholarly journals Histological Study on the Nasal Cavity of Black Iraqi Goat (Capra hircus)

2019 ◽  
Vol 42 (2) ◽  
pp. 105-111
Author(s):  
Ali F. Reshag
Keyword(s):  
Nasal Cavity ◽  
Alcian Blue ◽  
Squamous Epithelium ◽  
Histological Study ◽  
Goblet Cells ◽  
Columnar Epithelium ◽  
Capra Hircus ◽  
Nerve Bundles ◽  
Stratified Squamous Epithelium ◽  
Histological Results

The histological observations of this study which conducted on nasal cavity of black Iraqi goat revealed that the nasal cavity consisted of three regions (vestibular, respiratory and olfactory(.The vestibular region was narrow zone, lined with (non keratinized) stratified squamous epithelium, and its propria submucosa contained serous glands and blood vessels.The respiratory region was lined with ciliated pseudostratified columnar epithelia with goblet cells. The vascular propria submucosa had mucous glands, which were positive to periodic acdic shieff and Alcian blue stains. The olfactory region was lined with thick pseudostratified columnar epithelium devoid of goblet cells and contained, the propria submucosa serous simple acinus Alcian positive glands (Bowman's glands) and numerous nerve bundles. The histological results concluded that the nasal cavity of black Iraqi goat was good adaptive tooled for hot dusty environment.

Investigation of dorsal/ventral skin and the parotoid region of Lyciasalamandra billae and Lyciasalamandra luschani basoglui (Urodela: Salamandridae)

Biologia ◽  
2014 ◽  
Vol 69 (3) ◽  
Author(s):  
Esra Akat ◽  
Hüseyin Arikan ◽  
Bayram Göçmen
Keyword(s):  
Hyaluronic Acid ◽  
Squamous Epithelium ◽  
Morphological Characteristics ◽  
Fluorescein Isothiocyanate ◽  
Acid Binding Protein ◽  
Dermal Glands ◽  
Different Types ◽  
Stratified Squamous Epithelium ◽  
Ventral Skin ◽  
Hyaluronic Acid Binding

AbstractIn the present study, the parotoid region, dorsal and ventral integuments of Lyciasalamandra billae and Lyciasalamandra luschani basoglui were investigated in terms of localization of hyaluronic acid (HA) and histochemical characteristics. HA immunoreactivity was carried out using biotinylated hyaluronic acid binding protein (B-HABP) labelled with streptavidin-fluorescein isothiocyanate (FITC). HA was mainly localized in the stratum spongiosum of L. billae and L. luschani basoglui for water homeostasis and skin functionality. Light microscopic observations revealed that the dorsal and ventral integuments of L. billae and L. luschani basoglui exhibited basic morphological characteristics of other amphibians: the epidermis was composed of a stratified squamous epithelium and the dermis subdivided into stratum spongiosum and stratum compactum. Two different types of dermal glands (mucous and granular glands) were identified in the spongious dermis of the dorsal and ventral integuments whereas in the parotoid region, three different types of glands (mucous, granular and parotoid glands) were examined.

scholarly journals Papilar topografy and morphology of the tongue in the E. sexcinctus

2015 ◽  
Vol 32 (03) ◽  
pp. 182-186 ◽  
Author(s):  
A. Silva ◽  
M. Cavalcante ◽  
M. Ferraz ◽  
M. Rizzo ◽  
E. Fortes ◽  
...  
Keyword(s):  
Potassium Chloride ◽  
Feeding Habits ◽  
Morphological Characteristics ◽  
Taste Buds ◽  
Formaldehyde Solution ◽  
Wild Animals ◽  
Sodium Thiopental ◽  
Hematoxylin Eosin ◽  
Masticatory Apparatus ◽  
Different Parts

Abstract Introduction: The Six-banded armadillo (Euphractussexcintus) belongs to Cigunlata order, has diverse feeding habits and masticatory apparatus developed. The tongue, one of the major components of this equipment, has the mucosa papillae, taste buds and tongue glands. Materials and Methods: Six-banded armadillo were submitted to an anesthetic protocol with Tiletamine and zolazepan (Telazol®, Fortdotge, Brazil) and Sodium Thiopental (Thiopentax®, Cristália, Brazil), we proceeded to euthanasia using Potassium Chloride 19.1%, to then fix them in a 10% formaldehyde solution. The tongues were dissected and identified structures. For microscopic processing, segments from different parts of the tongue were subjected to histological routine and stained with hematoxylin-eosin and Masson. Results: The tongue of the six-banded armadillo presents three types of papillae: filiform, fungiform and vallate, with no conical buds and foliate. Still in the tongue mucosa, was observed mucous glands and various taste corpuscles. Some data differ from those same found in other wild animals that have been studied, but are similar to those of the same phylogenetic. Conclusion: The morphological characteristics of the six-banded armadillo's tongue are adapted to the difficulties faced by him during chewing, requiring the tongue, structures that provide you mobility, strength and sensitivity.

scholarly journals Morphology of the tongue of the emu (Dromaius novaehollandiae). II. Histological features

2009 ◽  
Vol 76 (4) ◽  
Author(s):  
M.R. Crole ◽  
J.T. Soley
Keyword(s):  
Lymphoid Tissue ◽  
Squamous Epithelium ◽  
Taste Buds ◽  
Taste Bud ◽  
Histological Structure ◽  
Histological Features ◽  
Caudal Extremity ◽  
Dromaius Novaehollandiae ◽  
Stratified Squamous Epithelium ◽  
Nodular Tissue

Although a number of brief, fragmented descriptions have been provided on the gross morphology of the ratite tongue, very few studies have documented the histological structure of this organ. This paper presents the first definitive histological description of the emu tongue and reviews, consolidates and compares the scattered information on the histology of the ratite tongue available in the literature. Five tongues were removed from heads obtained from birds at slaughter and fixed in 10 % neutral buffered formalin. Appropriate longitudinal and transverse segments were removed, routinely processed for light microscopy, and sections examined after staining with H & E and PAS. The entire tongue (body and root) is invested by a non-keratinized stratified squamous epithelium. The supporting connective tissue of the tongue dorsum displays only large, simple branched tubular mucussecreting glands, whereas the caudal tongue body ventrum and tongue root, in addition to these glands, also exhibits small, simple tubular mucus-secreting glands. Herbst corpuscles are associated with the large, simple branched glands. Lymphoid tissue is restricted to the tongue ventrum and is particularly obvious at the junction of the ventral tongue body and frenulum where a large aggregation of diffuse lymphoid tissue, with nodular tissue proximally, was consistently observed. A structure resembling a taste bud was located in the epithelium on the caudal extremity of the tongue root of one bird. This is the first reported observation of taste buds in ratites. Forming the core of the tongue body is the cartilaginous paraglossum lying dorsal to the partially ossified rostral projection of the basihyale. The histological features of the emu tongue are generally similar to those described for the greater rhea and ostrich, except that taste buds were not identified in these species. The results would suggest that the emu tongue functions as a sensory organ, both for taste and touch (by virtue of taste receptors and Herbst corpuscles, respectively), as well as fulfilling an immunological function.

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