[Innervation of the rat urinary bladder. II. Effects of prostaglandins on the denervated detrusor muscle after bilateral pelvic ganglionectomy].

The effects of prostaglandin (PG) F2 alpha and E2 on the denervated smooth muscle of the urinary bladder in female rats were studied in vivo by histochemistry and electron microscopy. The urinary bladder denervated by bilateral removal of the pelvic ganglion was markedly distended, being filled with urine. Daily intravenous administration of PGF2 alpha or PGE2 for 6 days following the operation showed that rats receiving PGE2 urinated remarkably more than those receiving PGF2 alpha. But the ultrastructural changes on the smooth muscle cells, such as dilated tubules of rough endoplasmic reticulum and large Golgi vacuoles, were more prominent in the PGF2 alpha administrated urinary bladders than in PGE2 administrated ones. On occasion, cholinergic ganglion cells happened to be encountered in the muscular layer of a rat urinary bladder. These intramural ganglion cells and the cholinergic nerve fibers surrounding the cells displayed strong acetylcholinesterase activity, unaffected by bilateral pelvic ganglionectomy.