The Age Changes Of The Expression Of Nitric Oxide Synthase (NOS) In Pterygopalatine Ganglion, Otic Ganglion And The Fibers Innervating The Cerebral Vessels Of Rats

Objective: To observe the age changes of the age changes of the expression of nitric oxide synthase(NOS) in pterygopalatine ganglion , otic ganglion and the fibers innervating the cerebral vessels of rats.Methods: The NOS positive cells in pterygopalatine ganglion, otic ganglion and the fibers innervating the cerebral vessels of rats on development were observed by histochemical technique of reduced nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) activity and image analysis.Results: The NOS positive cells are scattered in pterygopalatine ganglion, otic ganglion. The decreased density and the increased somatic size of the NOS positive cells of pterygopalatine ganglion, otic ganglion of rats was followed in rat's development and to the largest in adulthood. The density of the fibers innervating on the cerebral vessels increase until adulthood. There was no distinct difference between old and adult rats results.Conclusion: There is a characteristic principle during the development of the NOS positive cells in pterygopalatine , otic ganglion and the fibers innervating the cerebral vessels of rats.