Histological and Lectin Histochemical Studies on the Olfactory and Respiratory Mucosae of the Sheep
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The olfactory and respiratory mucosae of the Corriedale sheep were examined using lectin histochemistry in order to clarify the histochemical and glycohistochemical differences between these two tissues. The olfactory epithelium was stained with 13 lectins out of 21 lectins examined, while the respiratory epithelium was positive to 16 lectins. The free border of both of the olfactory and respiratory epithelia was stained with 12 lectins: Wheat germ agglutinin (WGA), succinylated-wheat germ agglutinin (s-WGA), <i>Lycopersicon esculentum</i> lectin (LEL), <i>Solanum tuberosum</i> lectin (STL), <i>Datura stramonium</i> lectin (DSL), Soybean agglutinin (SBA), <i>Bandeiraea simplicifolia</i> lectin-I (BSL-I), <i>Ricinus communis</i> agglutinin-I (RCA-120), <i>Erythrina cristagalli</i> lectin (ECL), Concanavalin A (Con A), <i>Phaseolus vulgaris</i> agglutinin-E (PHA-E) and <i>Phaseolus vulgaris</i> agglutinin-L (PHA-L). The associated glands of the olfactory mucosa, Bowman's glands, were stained with 13 lectins. While both the goblet cells and mucous nasal glands were stained with 8 lectins; five of them (WGA, s-WGA, STL, <i>Vicia villosa</i> agglutinin (VVA) and ECL) were mutually positive among the Bowman's glands, mucous nasal glands and the goblet cells. These findings indicate that the glycohistochemical characteristics of the free borders of both olfactory and respiratory epithelia are similar to each other, suggesting that secretions from the Bowman's glands and those of the goblet cells and mucous nasal glands are partially exchanged between the surface of two epithelia to contribute the functions of the respiratory epithelium and the olfactory receptor cells, respectively.
- Journal of Veterinary Medical Science
Journal of Veterinary Medical Science 76(3), 339-346, 2014
JAPANESE SOCIETY OF VETERINARY SCIENCE