Histology and carbohydrate histochemistry of the alimentary canal in the rainbow trout Oncorhynchus mykiss
Authors: Marchetti, L.; Capacchietti, M.; Sabbieti, M. G.; Accili, D.; Materazzi, G.; Menghi, G.
Source: Journal of Fish Biology, Volume 68, Number 6, June 2006 , pp. 1808-1821(14)
Abstract:A histological and histochemical analyses were carried out on the entire alimentary canal of the rainbow trout Oncorhynchus mykiss. In particular the oesophageal region showed presence of terminal β‐D‐galactose(1–3)‐N‐acetylgalactosamine and α‐N‐acetylgalactosamine. In the anterior and posterior regions of the stomach, lining epithelium and gastric pits exhibited the presence of β‐gal and α‐GalNAc. In addition sialoglycoconjugates having sialic acid–β–galactose(1–3)‐N‐acetylgalactosamine and sialic acid‐N‐acetylgalactosamine as terminal tri‐ and di‐saccharides, were demonstrated. In proximal and distal intestine goblet cells showed the presence of sialoglyconjugates, having sialic acid‐β‐gal(1–3)‐GalNAc and sialic acid‐GalNAc as terminal sequences, belonging to N‐linked chains. In the enterocytes of the entire intestine, terminal GlcNAc, α‐Gal, α‐fucose were found.
Document Type: Regular Paper
Affiliations: Department of Comparative Morphology and Biochemistry, University of Camerino, via Gentile III da Varano, 10, I-62032 Camerino (MC), Italy
Publication date: June 1, 2006