Peripheral dopamine receptor blockade by SCH 23390 and domperidone in vitro. 1985

A Hilditch, and G M Drew

The antagonist potencies of SCH 23390 and domperidone have been determined at vascular and neuronal dopamine receptors in the rabbit isolated splenic artery and rectococcygeus muscle, respectively. SCH 23390 was a potent, competitive antagonist at vascular (pA2 = 10.65) but not neuronal (pA2 less than 6.0) receptors. Domperidone was a potent, competitive antagonist at neuronal (pA2 = 7.9) but not vascular (pA2 less than 4.0) receptors. SCH 23390 and domperidone are, therefore, highly selective vascular and neuronal dopamine receptor antagonists respectively.

UI MeSH Term Description Entries
D008297 Male Males
D009119 Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D009131 Muscle, Smooth, Vascular The nonstriated involuntary muscle tissue of blood vessels. Vascular Smooth Muscle,Muscle, Vascular Smooth,Muscles, Vascular Smooth,Smooth Muscle, Vascular,Smooth Muscles, Vascular,Vascular Smooth Muscles
D010643 Phenoxybenzamine An alpha-adrenergic antagonist with long duration of action. It has been used to treat hypertension and as a peripheral vasodilator. Dibenylene,Dibenyline,Dibenziran,Dibenzylin,Dibenzyline,Dibenzyran,Phenoxybenzamine Hydrochloride,Hydrochloride, Phenoxybenzamine
D011460 Prostaglandins F (9 alpha,11 alpha,13E,15S)-9,11,15-Trihydroxyprost-13-en-1-oic acid (PGF(1 alpha)); (5Z,9 alpha,11,alpha,13E,15S)-9,11,15-trihydroxyprosta-5,13-dien-1-oic acid (PGF(2 alpha)); (5Z,9 alpha,11 alpha,13E,15S,17Z)-9,11,15-trihydroxyprosta-5,13,17-trien-1-oic acid (PGF(3 alpha)). A family of prostaglandins that includes three of the six naturally occurring prostaglandins. All naturally occurring PGF have an alpha configuration at the 9-carbon position. They stimulate uterine and bronchial smooth muscle and are often used as oxytocics. PGF
D011817 Rabbits A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes. Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D011954 Receptors, Dopamine Cell-surface proteins that bind dopamine with high affinity and trigger intracellular changes influencing the behavior of cells. Dopamine Receptors,Dopamine Receptor,Receptor, Dopamine
D004294 Domperidone A specific blocker of dopamine receptors. It speeds gastrointestinal peristalsis, causes prolactin release, and is used as antiemetic and tool in the study of dopaminergic mechanisms. Apo-Domperidone,Domidon,Domperidon,Domperidon AL,Domperidon Hexal,Domperidon Stada,Domperidon-TEVA,Domperidona Gamir,Domperidone Maleate,Domperidone Maleate (1:1),Domperidone Monohydrochloride,Gastrocure,Motilium,Nauzelin,Novo-Domperidone,Nu-Domperidone,PMS-Domperidone,Péridys,R-33,812,R-33812,Ratio-Domperidone,Apo Domperidone,Domperidon TEVA,Gamir, Domperidona,Hexal, Domperidon,Maleate, Domperidone,Monohydrochloride, Domperidone,Novo Domperidone,Nu Domperidone,PMS Domperidone,R33,812,R33812,Ratio Domperidone,Stada, Domperidon
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001158 Arteries The vessels carrying blood away from the heart. Artery

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