The endocrine cells in the gut of Mugil saliens Risso, 1810 (Teleostei): an immunocytochemical and ultrastructural study.
The endocrine cells in the gut of Mugil saliens Risso, 1810 (leaping grey mullet) were investigated by immunocytochemical and electron microscopic techniques. Gastrin-, glucagon-, and somatostatin-immunoreactive cells were identified in the cardiac and cecal stomach regions, located mainly in the lower part of the gastric folds and in the upper part of the glands. Substance P-, somatostatin-, and pancreatic polypeptide (PP)-immunoreactive cells were found between epithelial cells in the pyloric stomach region. Gastrin-, cholecystokinin (CCK)-, gastric inhibitory polypeptide (GIP)-, substance P-, Met-enkephalin- and PP-immunoreactive cells were observed throughout the intestine while only the last three of these appeared in the posterior intestine. Nine types of gastroenteroendocrine cells were ultrastructurally characterized; some of them were related to the cell types immunocytochemically identified.
Elbal
M T
MT
Department of Cell Biology, University of Murcia, Spain.
Lozano
M T
MT
Agulleiro
B
B
D000818:Animals; D004064:Digestive System / Q000166:cytology* / Q000648:ultrastructure; D004702:Endocrine Glands / Q000166:cytology* / Q000648:ultrastructure; D005260:Female; D005399:Fishes / Q000033:anatomy & histology*; D007124:Immunoenzyme Techniques; D007150:Immunohistochemistry; D008297:Male; D008854:Microscopy, Electron