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Histological and histochemical study of the duodenum of the plains viscacha ( L agostomus maximus ) at different stages of its ontogenetic development
Author(s) -
Tano de la Hoz María Florencia,
Flamini Mirta Alicia,
Díaz Alcira Ofelia
Publication year - 2014
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.2012.00577.x
Subject(s) - biology , duodenum , ontogeny , morphogenesis , mucus , immunohistochemistry , fetus , glycoprotein , anatomy , epithelium , pathology , medicine , endocrinology , immunology , microbiology and biotechnology , biochemistry , pregnancy , ecology , genetics , gene
The general objective of this study focused on the duodenal histological and histochemical analysis of fetuses and adults of plains viscacha ( L agostomus maximus ) from the B uenos A ires province ( A rgentina). Histological techniques, histochemical procedures for localizing and characterizing glycoproteins ( GP s) and lectin histochemical techniques for the identification of specific sugar residues were used. The duodenal structure of all age groups here considered was typical of mammals. We identified a proliferation phase and an epithelial morphogenesis in mid‐gestational fetuses, an intermediate period of cell differentiation in at‐term fetuses and a posterior stage of physiological maturation in adults. According to histochemistry, the diverse GP s elaborated and secreted into the duodenum show a high degree of histochemical complexity related to the multiple functions of mucus in the digestive tract. The GP s in the duodenum of L . maximus and their glycosylation patterns varied according to the animal's age and the developmental state of the organ.