Abstract
The relationship between bovine tracheal muscle contraction and phosphoinositide metabolism was studied with the muscarinic agonists, methacholine, oxotremorine, and McN-A-343. Analysis of the dose-response curves for contraction and inositol phosphates accumulation with these agonists demonstrated a direct relationship between the two parameters, with a considerable reserve of inositol phosphate production for the full contractile agonists, methacholine and oxotremorine, and no reserve for the partial agonist, McN-A-343.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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(4-(m-Chlorophenylcarbamoyloxy)-2-butynyl)trimethylammonium Chloride / pharmacology
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Animals
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Cattle
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Inositol Phosphates / metabolism
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Methacholine Chloride
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Methacholine Compounds / pharmacology
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Muscarinic Antagonists*
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Muscle Contraction / drug effects*
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Muscle, Smooth / drug effects*
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Muscle, Smooth / metabolism
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Oxotremorine / pharmacology
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Phosphatidylinositols / metabolism*
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Receptors, Muscarinic / physiology
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Trachea / drug effects
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Trachea / metabolism
Substances
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Inositol Phosphates
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Methacholine Compounds
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Muscarinic Antagonists
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Phosphatidylinositols
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Receptors, Muscarinic
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Methacholine Chloride
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(4-(m-Chlorophenylcarbamoyloxy)-2-butynyl)trimethylammonium Chloride
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Oxotremorine