Ultrastructure and histochemistry of the subepithelial glands of the nasal septal island in dromedaries with special reference to the possible functions
| Autor: | Fatgzim Latifi, Ahmed I. Abo-Ahmed, E. Ahmed |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Pathology medicine.medical_specialty QH301-705.5 Context (language use) 01 natural sciences 03 medical and health sciences Camels APUD cells Nasal septum medicine Biology (General) Chemistry Endoplasmic reticulum Nasal septal island Mucus Subepithelial glands Dromedaries Neuroepithelial cell Serous fluid 030104 developmental biology medicine.anatomical_structure Ultrastructure APUD cell Original Article General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Saudi Journal of Biological Sciences Saudi Journal of Biological Sciences, Vol 28, Iss 9, Pp 5325-5331 (2021) |
| ISSN: | 2213-7106 1319-562X |
| Popis: | Highlights • The NSI subepithelial glands in dromedaries had unique anatomical features. • Their ultrastructural features are typical for APUD cells. • They may have the structures required for synthesis of active peptides, amines and chemical mediators. The nasal septal island (NSI) is a sensory patch of neuroepithelium located within the soft tissue of the nasal septum in dromedaries. The island has unique anatomical features, including the specialized subepithelial glands. The aim of the present study was to describe the microscopic features and ultrastructure of these subepithelial glands and to speculate the possible functions. A total of 10 camel heads were used for the study. Unlike the serous and mucous airway glands, the NSI glands’ ultrastructural features were typical for cells of the (Amine Precursor Uptake and Decarboxylation, APUD) system. These features were included, membrane bound secretory vesicles of varying electron density, smooth endoplasmic reticulum in the form of vesicles; electron dense mitochondria, abundant rough endoplasmic reticulum and free ribosomes. Alcian-PAS identifiable mucus granules were not observed, except for few clusters of cells, located at the luminal surface. The probable functions were discussed on basis of cellular morphology and context. In a conclusion, the NSI subepithelial glands in dromedaries had unique anatomical structures, and as many other APUD cells, they had the machinery required for synthesis of a variable number of biologically active peptides, amines and chemical mediators. |
| Databáze: | OpenAIRE |
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