ISSN: 2642-116X
Authors: Kamal EH Abdalla, Abdelhafeez HH*, Mahmoud WG and Tamam EA
Rodlet cells have been specified for Teleost’s. They are unique cells has multi functions as secretion, osmoregulation, immune and sensory function. They considered as wandering cells that migrate through tissues and organs. The current study aims to investigate existence of rodlet cells in aquatic birds. The current study used the Egyptian goose (Alopochen egyptiacus) as a model of the aquatic birds. Rodlet cells were identified using semithin sectioning and Transmission electron microscopy. Different stages of rodlet cell including granular, transitional, pre-rupture and rupture stages were identified in the cecum and colon mucosa of the geese. Granular stage of rodlet cell was detected in the subepithelial lamina propria and contained granules of different sizes and shapes. Transitional rodlet cells were detected in the subepithelial lamina propria and within the epithelium. The transitional stage of rodlet cells were dominated by secretory granules of varying electron densities. The pre-ruptured stage of rodlet cells were demonstrated within the epithelium. The pre-ruptured stage of rodlet cells exhibited cell polarity with broad basal part and tapered apical end. The thick capsule and typical rodlet granules characterized this stage. Ruptured rodlet cells were detected at the surface of the enteric epithelium. The rupture stage of rodlet cells liberated their contents through the apical pores via holocrine mode of secretion. In conclusion, the current study for the first time provided an evidence for existence of the enteric rodlet cells in the aquatic bird. Future studies should consider localization of rodlet cells in different organs of aquatic birds.
Keywords: Rodlet Cells; Colon; Cecum; Egyptian Geese; Semithin; Transmission Electron Microscope
