Variation of regional distribution of enteroendocrine cells in small and large intestine of camel: histological and immunohistochemical study

Document Type : Original Article

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1 Histology and Cytology Department, Faculty of Veterinary Medicine ,Benha University

2 Histology and Cytology Department, Faculty of Veterinary Medicine, Benha University

Abstract

Abstract
The enteroendocrine cells (EECs) are gut-associated endocrine cells. They secrete various kinds of locally and systemically acting amines and peptides. In this study, the EECs distribution, shape, and staining properties were demonstrated in the camel's (Camelus dromedarius) intestine. We used hematoxylin and eosin, iron hematoxylin, Churukian and Schenk, and chromogranin A immunohistochemistry for observation of EECs in various intestinal segments. Our results indicated that EECs have three different shapes; spindle, cone, and round. They were concentrated on the crypts of Lieberkühn as a primary location. The number of positive immunostained EECs was higher in the small intestine than large intestine (P = 0.0030). The duodenum was the highest portion of EEC count in the small intestine followed by the jejunum and then the ileum. The colon had the highest portion in EECs count in the large intestine followed by the rectum and then the caecum (P = 0.0030). In conclusion, our data indicated the existence of three different kinds of EECs in the small and large intestines of camels.

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