Khatim M S, Gumaa K A, Petersson B, Lundqvist G, Grimelius L, Hellerström C
Anat Anz. 1985;159(1-5):181-6.
Little is known of the blood sugar regulation in the camel and the morphology and function of its endocrine pancreas. The present paper describes the light microscopic structure and hormone content of the endocrine pancreas of the one-humped camel. Staining of pancreatic sections with haematoxylin-eosin or aldehyde-fuchsin showed numerous islets evenly distributed in all parts of the pancreas. Immunocytochemical staining for insulin or glucagon indicated that islets were predominantly composed of centrally located B-cells, surrounded by a peripheral rim of A-cells. Corresponding stainings for somatostatin or pancreatic polypeptide (PP) demonstrated that D-cells comprised only a small part of the islet volume while PP-cells were common both within and outside the islets. There were no obvious differences between the frequency of the various islet cells in different pancreatic regions. The pancreatic hormone concentrations roughly corresponded to the frequency of the different islet cell types. Insulin appeared most abundant followed by glucagon, PP and somatostatin in decreasing order. The concentrations of each of the hormones were similar in different regions of the gland. It is concluded that the endocrine pancreas of the one-humped camel is dispersed into islets of the same size and cellular composition as has been described in many other mammalian species.
关于骆驼的血糖调节及其内分泌胰腺的形态和功能，人们所知甚少。本文描述了单峰骆驼内分泌胰腺的光镜结构和激素含量。用苏木精-伊红或醛复红对胰腺切片进行染色显示，有许多胰岛均匀分布于胰腺的各个部位。胰岛素或胰高血糖素的免疫细胞化学染色表明，胰岛主要由位于中央的B细胞组成，周围是一圈A细胞。生长抑素或胰多肽（PP）的相应染色显示，D细胞仅占胰岛体积的一小部分，而PP细胞在胰岛内外均很常见。不同胰腺区域各种胰岛细胞的频率没有明显差异。胰腺激素浓度大致与不同胰岛细胞类型的频率相对应。胰岛素含量似乎最为丰富，其次是胰高血糖素、PP和生长抑素，浓度依次递减。腺体不同区域每种激素的浓度相似。得出的结论是，单峰骆驼的内分泌胰腺分散成大小相同、细胞组成相同的胰岛，这与许多其他哺乳动物物种中所描述的情况相同。
