Abstract
AbstractChatecholamines and cholinesterases were studied histochemically in the uterine paracervical ganglion of normal and pregnant rats and after both sympathectomy and sacral parasympathectomy. About one fifth of the ganglion cells revealed intense acetylcholinesterase (AChE) activity. The cells were large and devoid of catecholamines and received AChE‐containing nerves. — About one third of the ganglion cells contained weak to moderate yellow‐green catecholamine fluorescence. They were presumed to be adrenergic although they also exhibited moderate to weak AChE activity. These postganglionic neurons represent “short” adrenergic neurons. The rest of the ganglion cells with moderate to weak AChE activity were presumed to be cholinergic. Increased ganglion cell fluorescence was observed after 2 weeks of pregnancy. There was no change in the cholinesterase activity of the neurons. — Division of the sympathetic or the sacral parasympathetic nerves did not cause changes in the intensity of the histochemical reactions. The small, intensely fluorescent cells (SIF‐cells) did not show AChE activity. Other cholinesterases, although present in the cytoplasm of the ganglion cells and SIF‐cells, were mainly localized in the glial cells.
Published Version
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