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EFFECTS OF OXYTOCIN ON THE ISOLATED VAS DEFERENS OF THE RAT
Author(s) -
BENEIT JUAN V.,
HIDALGO AGUSTIN,
TAMARGO JUAN L.
Publication year - 1980
Publication title -
british journal of pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.432
H-Index - 211
eISSN - 1476-5381
pISSN - 0007-1188
DOI - 10.1111/j.1476-5381.1980.tb07025.x
Subject(s) - vas deferens , oxytocin , acetylcholine , medicine , endocrinology , stimulation , dopamine , calcium , chemistry
1 The effect of oxytocin was studied on the isolated vas deferens of the rat. 2 Oxytocin (25 to 200 mu/ml) reversibly reduced the contractile response induced by noradrenaline, dopamine and acetylcholine. 3 Oxytocin (400 mu/ml) abolished the response to potassium. 4 The contractions evoked in the vas deferens by field stimulation were also reduced by oxytocin (50 to 200 mu/ml). The inhibitory effect of the drug was related to the external calcium concentration. 5 It is suggested that oxytocin depresses the contractile responses in the vas deferens at least partly by reducing the availability of calcium from an extracellular source.