Abstract
The influence of intramural intestinal innervation on the morphogenesis of the mucosa and in particular of the enteroendocrine cells (EECs) has been studied on male Wistar rats with morphometric, autoradiographic and immuno-histochemical methods in the duodenum, proximal and distal jejunum and ilium before and after myenteric ablation with benzalkonium chloride (BAC). Twenty-one days after denervation alterations were observed in the mucosal structure with thickening of the mucosa, increase in the proliferation rate and with changes in numerical and spatial distribution of D-cells, I-cells, N-cells, glucagon and glicentin i.r. L-cells and 5-HT i.r. cells which myenteric ablation caused. Analysis of the genetic constructs involved in the alterations of EECs on the EECs provide evidence for the cAMP responsive elements as the main mediator.
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