Pastor L M, Ballesta J, Madrid J F, Perez-Tomas R, Hernandez F
Department of Histology, School of Medicine, Murcia, Spain.
Acta Histochem. 1988;83(1):91-7. doi: 10.1016/S0065-1281(88)80076-X.
Little is known about the distribution of glycoproteins in the digestive tube of birds. In the present study, the localization and distribution of mucins in the digestive tract of the chicken are reported. Sialo- and sulpho-mucins were widely distributed throughout the chicken digestive tube. Some of the mucous cells of the proximal segment of the proventriculus presented neutral glycoproteins; in the medial segment, surface cells containing only sialo-mucins were observed. Surface cells of the gizzard contained both sialo- and sulpho-mucins while PAS-positive material was localized in the lumen of the glands. 2 types of mucous cells were observed in the small intestine; 1 type contained only sialo-mucins and the other contained both sialo- and sulpho-mucins. In the large intestine and caecum, both types of acid mucins were present in the mucous cells. In conclusion, the distribution of glycoproteins in the chicken reported in the present study show marked differences with that reported in other avian species.
关于鸟类消化道中糖蛋白的分布情况，人们了解甚少。在本研究中，报告了鸡消化道中黏蛋白的定位和分布。唾液酸黏蛋白和硫酸黏蛋白广泛分布于整个鸡的消化道。腺胃近端的一些黏液细胞呈现中性糖蛋白；在中间段，观察到仅含唾液酸黏蛋白的表面细胞。肌胃的表面细胞含有唾液酸黏蛋白和硫酸黏蛋白，而PAS阳性物质定位于腺腔。在小肠中观察到两种类型的黏液细胞；一种类型仅含唾液酸黏蛋白，另一种类型则同时含有唾液酸黏蛋白和硫酸黏蛋白。在大肠和盲肠中，黏液细胞中存在两种类型的酸性黏蛋白。总之，本研究报告的鸡体内糖蛋白的分布与其他鸟类物种报告的情况存在显著差异。
