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Glycoconjugate distribution in gastric fundic mucosa of Umbrina cirrosa L. revealed by lectin histochemistry

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The stomach of adult shi drum Umbrina cirrosa was investigated using a battery of nine horseradish peroxidase‐conjugated lectins combined with enzymatic treatment, in order to distinguish glycoconjugate sugar residues. Epithelial cells showed the presence of galactosyl(β1→4)N‐acetylglucosamine, mannose, N‐acetylgalactosamine, N‐acetylglucosamine, fucose and sialic acid‐galactosyl(β1→3)N‐acetylgalactosamine residues. Gastric pits had similar sugar residues with the exception of N‐acetylgalactosamine which was less diffused. Gastric glands were characterized by the presence of glycoconjugates containing galactosyl(β1→3)N‐acetylgalactosamine, N‐acetylglucosamine, galactosyl(β1→4) N‐acetylglucosamine, N‐acetylgalactosamine and a small amount of sialic acid linked to N‐acetylgalactosamine.
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Keywords: glycoconjugates; lectins; shi drum; stomach

Document Type: Regular Paper

Affiliations: 1: Dipartimento di Scienze Biopatologiche Veterinarie – Sezione di Anatomia – Via San Costanzo 4-06126 Perugia, Italy and 2: Dipartimento di Scienze Veterinarie – Via Circonvallazione 93-95 - 62024 Matelica, Italy

Publication date: 2005-01-01

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