Characterization of the adenosine receptor mediating contraction in rat colonic muscularis mucosae
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چکیده
منابع مشابه
Muscularis mucosae contraction evokes colonic secretion via prostaglandin synthesis and nerve stimulation.
This in vitro study tested the hypothesis that muscularis mucosae contractile activity contributes to rabbit colonic mucosal function by mechanisms other than simple mechanical deformation of the epithelium. Experiments were performed by using a technique that allows simultaneous recording of muscle activity and transmucosal potential difference, a measure of epithelial ion transport. ATP, brad...
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In the rabbit ileum Clostridium difficile toxin A causes inflammation and mucosal damage via a specific glycoprotein receptor that contains α-d-galactose. In rabbit colon toxin A also causes inflammation, and this is associated with increased myoelectric activity and eicosanoid production. The present in vitro study was undertaken to determine if a toxin A receptor on one or more layers of colo...
متن کاملMuscularis mucosae - the forgotten sibling.
Lamina muscularis mucosae sitting beneath mucosal surface of the digestive tract has received little attention to date compared with external smooth muscle layers. Motor activity of the muscularis mucosae shows a great regional and species difference. Autonomic innervation profile is also different from esophagus to colon or between animal species. Intracellular transduction mechanisms for moto...
متن کاملComparison of motor reactivity of the colonic muscularis mucosae isolated from human, guinea pig and rat in vitro.
We have compared the reactivity to spasmogens of longitudinal muscularis mucosae isolated from the human, guinea pig and rat colon in vitro. The muscularis mucosae isolated from the human distal colon responded with a sustained contractions to carbachol (10 nM-30 microM), in a concentration-dependent manner, and the maximum contraction was comparable to that with high potassium concentration (1...
متن کاملAntigenic Profile of Muscularis Mucosae and Muscularis Propria of the Urinary Bladder
Background: Differentiation between the muscularis mucosae (MM) and muscularispropria (MP) of the bladder remains challenging. Objective: To identify MM- and MP-specific antigens that could be of potential value for staging of urothelialcarcinomain a pilot study. Method: The expression of 12 protein antigens in 11 human bladder specimens was examined. There were 5 post radical cystectomy specim...
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ژورنال
عنوان ژورنال: British Journal of Pharmacology
سال: 1993
ISSN: 0007-1188
DOI: 10.1111/j.1476-5381.1993.tb13950.x