... and tension of the contractions which were reversed to decreases or depressed by phentolamine. Isoproterenol abolished the spontaneous contractions. Acetylcholine did not significantly change frequency and tension of the contractions. The results indicate that ureteral spontaneous contractions may be enhanced...

...Christian Stief; Wolfgang Diederichs; Francois Benard; Ruud Bosch; Sherif Aboseif; Tom F. Lue; Emil A. Tanagho In 15 adult dogs, the possible role of acetylcholine as a parasympathetic neurotransmitter in canine penile erection was investigated. Intracavernous injection of increasing dosages...

...Shinji Mutoh; Shoichi Ueda; Shinjiro Yano; Keiichi Ikegami; Matao Sakanashi Effects of acetylcholine on the tone and miniature contractions of dog urinary bladder were investigated in vitro. In both dome and trigone preparations, cumulative administrations of acetylcholine produced dose-dependent...

... liquid chromatography coupled with a microdialysis procedure. The effects of pretreatment with various drugs on acetylcholine (ACh) release and contractile responses induced by electrical field stimulation were evaluated. Although atropine (a muscarinic nonselective antagonist) and 4-DAMP (a muscarinic M...