Muscarinic Receptor Subtypes Mediating Positive and Negative Inotropy in the Developing Chick Ventricle
نویسندگان
چکیده
منابع مشابه
MUSCARINIC RECEPTOR SUBTYPES IN SMOOTH MUSCLE FROM THE BODY OF HUMAN STOMACH
Up to date, there are four pharmacologically characterized subtypes of muscarinic receptors (M1, M2, M3 and M4). In our study we have investigated muscarinic receptor subtypes in smooth muscle layers of human stomach. Isolated preparations of longitudinal and circular muscle layers from human stomach were used. Acetylcholine, bethanechol, carbachol, pilocarpine and AHR -602 produced concen...
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Muscarinic receptor subtypes in the airways appear to subserve different physiological functions. M1-receptors facilitate neurotransmission through parasympathetic ganglia and enhance cholinergic reflexes, but are also localized to alveolar walls. M2-receptors act as autoreceptors on post-ganglionic cholinergic nerves and inhibit acetylcholine release. There is some evidence that they may be de...
متن کاملMuscarinic Acetylcholine Receptors in Developing Chick Heart*
The chronotropic response of embryonic chick hearts to cholinergic agents is first clearly detectable on day 5 in ouo and full responsiveness develops by day 7. Muscarinic acetylcholine receptors in fully responsive 9day-old hearts specifically bind the muscarinic antagonist quinuclidinyl benzilate. Binding is blocked effectively by muscarinic agonists and antagonists but is poorly inhibited by...
متن کاملMuscarinic acetylcholine receptors in developing chick heart.
The chronotropic response of embryonic chick hearts to cholinergic agents is first clearly detectable on day 5 in ouo and full responsiveness develops by day 7. Muscarinic acetylcholine receptors in fully responsive 9day-old hearts specifically bind the muscarinic antagonist quinuclidinyl benzilate. Binding is blocked effectively by muscarinic agonists and antagonists but is poorly inhibited by...
متن کاملMuscarinic receptor subtypes in the alimentary tract.
Acetylcholine is a transmitter in preganglionic autonomic and postganglionic parasympathetic nerves and a non-neuronal paracrine mediator in the alimentary tract. Acetylcholine is involved in the control of almost any function within these organ systems, and almost every cell type expresses multiple muscarinic receptor subtypes. Although muscarinic receptors at non-neuronal effector cells commo...
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ژورنال
عنوان ژورنال: Journal of Pharmacological Sciences
سال: 2007
ISSN: 1347-8613,1347-8648
DOI: 10.1254/jphs.fpj06013x