Localization of Sugar Residues in the Stomach of Three Species of Monkeys (Tupaiidae glis, Nycticebus cocang and Callithrix jacchus) by Lectin Histochemistry

Abstract

The stomach of three species of non-human primates was investigated by lectin histochemistry to clarify the staining affinity and distribution patterns of their sugar residues. All gastric regions, with little differences between the deep and superficial parts of the same region, were rich in. in N-acetylglucosamine and/or neuraminic acid. Although, the superficial regions of the gastric mucosa were scanty in N-acetylgalactosamine, a-D-glucose and a -D-mannose, the deep parts of the gastric mucosa were rich in these sugars. In conclusion, there is a difference among the mucosubstances of surface and foveolar mucous cells, mucous neck cells, and gastric gland cells. This indicates heterogeneous composition of gastric mucus, or mucus molecules with variations in the degree of glycosylation of their oligosaccharide chains in the different cells which suggest that lectin binding affinity in the gastric mucosa correlated mostly to the degree of cellular differentiation.

Comparative Gastric Morphometry of Muong Indigenous and Vietnamese Wild Pigs

“…The study on gnotobiotic pig revealed normal structure of lymph nodes in submucosa of cardiac region of stomach and could migrate to mucosa layer [ 29 ]. The similar result can be found in monkey [ 30 ]. Therefore it is probable that the stomach structure was not only designed for digestion but also genetically immunology contributed.…”

The stomach of the wild herbivorous hystricomorph rodent Lagostomus maximus: A comparative histomorphological and histochemical study of the cardiac and pyloric regions

“…In L. maximus , the pyloric glands, branched tubular and tortuous, showed a narrower lumen than the cardiac glands, straight simple and unbranched. These results differ from those observed in the pyloric glands of the stomachs of monkeys ( Tupaiidae glis , Nycticebus cocang and Callithrix jacchus ; Fayed et al., 2010) and of brown rats ( Rattus norvegicus ; Chandana et al., 2013), which are simple tubular and short.…”

“…The great quantity of mucous cells both in the cardiac and pyloric regions of mammals indicates the secretion of high levels of mucins to neutralize the corrosive and harmful effect of hydrogen chloride and pepsin from the gastric juice, thus helping to maintain the normal levels of pH in this organ (Fayed et al., 2010; Igbokwe & Obinna, 2016).…”

“…Gastric glands have been studied in diverse species and differences were determined in the secreting nature of their cells (Boonzaier et al., 2013b; Fayed et al., 2010; Scillitani et al., 2007; Trang, Ooi, Zuki, & Noordin, 2012). In the plains viscacha, the cardiac and pyloric glands exhibit different mucous cell types according to the mucin type secreted.…”

“…The glycosylation pattern of gastrointestinal mucins varies according to cell type, anatomical region, age and species (Schumacher, Duku, Katoh, Jorns, & Kraus, 2004; Scillitani, Zizza, Liquori, & Ferri, 2007; Tano de la Hoz et al., 2014). Its distribution has been demonstrated in diverse species of mammals through histochemical techniques (Boonzaier, Van der Merwe, Bennett, & Kotzé, 2013b; Fayed, Elnasharty, & Shoaib, 2010; Tano de la Hoz et al., 2014).…”