Muscarinic Receptor Subtypes Mediating Ca2+ Sensitization of Intestinal Smooth Muscle Contraction: Studies with Receptor Knockout Mice
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...
متن کاملmuscarinic 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 concentrati...
متن کاملCaveolae facilitate muscarinic receptor-mediated intracellular Ca2+ mobilization and contraction in airway smooth muscle.
Contractile responses of airway smooth muscle (ASM) determine airway resistance in health and disease. Caveolae microdomains in the plasma membrane are marked by caveolin proteins and are abundant in contractile smooth muscle in association with nanospaces involved in Ca(2+) homeostasis. Caveolin-1 can modulate localization and activity of signaling proteins, including trimeric G proteins, via ...
متن کاملKnockout mice reveal that the angiotensin II type 1B receptor links to smooth muscle contraction.
BACKGROUND Rodents express two isoforms of the angiotensin II type 1 (AT(1)) receptor: AT(1A) and AT(1B). It is unclear which receptor subtype mediates contraction in response to angiotensin II in various arteries. We tested the hypothesis that the AT(1B) receptor is the predominant receptor that mediates contraction in the abdominal aorta in response to angiotensin II. METHODS Isometric tens...
متن کاملAssignment of muscarinic receptor subtypes mediating G-protein modulation of Ca(2+) channels by using knockout mice.
There are five known subtypes of muscarinic receptors (M(1)-M(5)). We have used knockout mice lacking the M(1), M(2), or M(4) receptors to determine which subtypes mediate modulation of voltage-gated Ca(2+) channels in mouse sympathetic neurons. Muscarinic agonists modulate N- and L-type Ca(2+) channels in these neurons through two distinct G-protein-mediated mechanisms. One pathway is fast and...
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ژورنال
عنوان ژورنال: Journal of Veterinary Medical Science
سال: 2010
ISSN: 0916-7250,1347-7439
DOI: 10.1292/jvms.09-0458