Samar María E, Avila Rodolfo E, Esteban Francisco J, Olmedo Luis, Dettin Luis, Massone Adriana, Pedrosa Juan A, Peinado María A
Department of Cell Biology, Histology and Embryology, Faculty of Medical Sciences, National University of Córdoba, Argentina.
Acta Histochem. 2002;104(2):199-207. doi: 10.1078/0065-1281-00627.
Salivary glands are a good model to investigate the relationship between cell secretion and glandular structure. Most studies of this organ deal with mammals, but we are interested in a morphofunctional characterization of these glands in poultry in relation with particular feeding habits. For this purpose, conventional and lectin histochemical methods as well as ultrastructural methods have been applied to the chicken lateral and medial palatine salivary glands. It was found that periodic acid-Schiff (PAS)-positive, alcianophilic, and metachromatic or orthochromatic cells were present with a more homogeneous distribution pattern in lateral glands than in medial palatine glands. Lectin staining depended on the lectin type that was applied, but also on the glandular part both in lateral and medial glands. Ultrastructural studies showed cytoplasmic membranous structures with a scattered granular or filamentous content depending on the secretory cell. In conclusion, morphofunctional characteristics of salivary glands of chicken suggest that their products are involved in lubrication and humidification of food ingested, and probably in protection of the oral surface, as has been previously described for other animals showing similar histochemical staining patterns.
唾液腺是研究细胞分泌与腺体结构之间关系的良好模型。对这个器官的大多数研究都集中在哺乳动物上，但我们感兴趣的是家禽中这些腺体与特定食性相关的形态功能特征。为此，我们将传统和凝集素组织化学方法以及超微结构方法应用于鸡的外侧和内侧腭唾液腺。结果发现，过碘酸希夫（PAS）阳性、阿利新蓝嗜染以及异染或正染的细胞在外侧腺体中的分布模式比在内侧腭腺中更为均匀。凝集素染色不仅取决于所应用的凝集素类型，还取决于外侧和内侧腺体中的腺体部位。超微结构研究显示，根据分泌细胞的不同，细胞质膜结构含有散在的颗粒状或丝状内含物。总之，鸡唾液腺的形态功能特征表明，它们的产物参与了摄入食物的润滑和湿润过程，并且可能像之前对其他具有类似组织化学染色模式的动物所描述的那样，参与了口腔表面的保护。
