Publication: Histological and histochemical observations in the stomach of the Senegal sole, Solea senegalensis
Authors
Arellano, J.M. ; Storch, V. ; Sarasquete, C.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
An histological and histochemical study was
conducted on the stomach of adult Senegal sole, Solea
senegalensis specimens. The stomach was made up of
four distinct layers: mucosa, lamina propria-submucosa-,
muscularis and serosa. Surface epithelial, glandular and
rodlet cells were present in the mucosa. Cells of the
columnar epithelium contained a basa1 nucleus.
Numerous mitochondria, granular endoplasmic
reticulum and Golgi apparatus consisting of severa1
parallel cisternae and vesicles were observed in the
cytoplasm of these cells. The lysosomes were small,
round and dense. The gastric glands were numerous in
the pyloric and fundic regions but absent in the cardiac
stomach. These glands were formed by two cell-types:
light and dark cells. The light cells were characterised by
numerous mitochondria, while dark cells had slightly
fewer mitochondria and a tubulo-vesicular system.
Rodlet cells similar to those observed in other teleostean
fish were present among the epithelial cells.
Although the epithelial cells of the mucosa contained a weak presence of neutral and acid
mucopolysaccharides/mucosubstances, these substances
were abundant in the lamina propria-submucosa.
Proteins rich in arginine, lysine, cysteine and cystine
were rarely present in the mucosa and lamina propriasubmucosa
of stomach, while proteins rich in tyrosine
were abundant in these layers. Acid phosphatase, and
ATP-ase (pH 7.2 and 9.4) activities were detected in the
mucosa and lamina propria-submucosa. Alkaline
phosphatase activity was not detected.
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