University of Khartoum

Secretory responses in granular ducts and acini of submandibular glands in vivo to parasympathetic or sympathetic nerve stimulation in rats

Secretory responses in granular ducts and acini of submandibular glands in vivo to parasympathetic or sympathetic nerve stimulation in rats

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Title: Secretory responses in granular ducts and acini of submandibular glands in vivo to parasympathetic or sympathetic nerve stimulation in rats
Author: Garrett, J.R.; Suliman, Ahmed M.; Anderson, L.C.; Proctor, G.B.
Abstract: The roles of sympathetic and parasympathetic nerves in the secretion of saliva from submandibular glands of rats have been tested by electrical stimulation of either nerve for 1 h unilaterally in separate animals. The flows of saliva thereby induced and their protein content were monitored. Structural changes in each gland were assessed by light- and electron microscopy and compared with the unstimulated contralateral con¬trol gland, and the extent of the changes was determined morphometrically. Sympathetic nerve stimulation in¬duced a relatively low flow of saliva that was rich in protein and was accompanied by extensive degranula¬tion from both acinar and granular duct cells. In contrast parasympathetic nerve stimulation induced a consider¬able flow of saliva that had a low protein content and no detectable degranulation occurred from the secretory cells. It is possible, therefore, that some protein in para¬sympathetic saliva may have arisen from a non-granular pathway.
URI: http://khartoumspace.uofk.edu/handle/123456789/19676
Date: 2016-03-14


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