作者: Frederick W. Scalise , Steven R. Vigna
DOI: 10.1016/0016-6480(88)90213-4
关键词: Gastrointestinal hormone 、 Duodenum 、 Cholecystokinin 、 Histolysis 、 Metamorphosis 、 Neuropeptide 、 Endocrinology 、 Biology 、 Xenopus 、 Internal medicine 、 Enteroendocrine cell
摘要: Cholecystokinin (CCK) radioimmunoassay and immunocytochemistry were used to localize the expression of CCK-like peptides in gut, brain, skin Xenopus laevis during development from fertilization through metamorphosis adult form. first detected gut shortly before food was observed lumen intestine. This immunoreactivity (CCK-li) localized endocrine cells duodenal mucosa. Gut CCK-li decreased coincident with histolysis. After metamorphosis, appeared newly organized gastric antrum at Nieuwkoop-Faber stage 62–63 reappeared reconstituted duodenum 63–64. In both cases, cells. duodenum, appearance preceded functional activity its target tissues. increased brain primary differentiation again metamorphic climax coincidentally hypothalamo-hypophysial system. Brain then declined transition larva adult. We conclude that presence larval does not induce CCK may play a role regulating gastrointestinal tract X. laevis.