SMOOTH MUSCLE RELAXING DRUGS AND GUINEA PIG ILEUM
نویسندگان
چکیده
منابع مشابه
Smooth muscle relaxing drugs and guinea pig ileum.
The effects of various smooth muscle relaxing drugs on contractile responses to acetylcholine (ACh), Ba2+ and Ca2+, and on the tissue cyclic AMP levels were examined in the guinea pig ileum. Papaverine and theophylline caused a decrease both in the maximum height and the slope of dose-response curves induced by the three stimulants, and an increase in the cyclic AMP levels. Diltiazem and D-600 ...
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Certain flavonoids inhibit antigen-induced release of histamine from mast cells and basophils and also inhibit contraction of guinea pig ileum induced by histamine, acetylcholine, and PGE2. We examined the effect of one flavonoid, quercetin, on anaphylactic smooth muscle contraction of ileum from guinea pigs sensitized to egg albumin. Quercetin inhibited both the phasic and tonic components of ...
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Muscarinic-receptor stimulation by 0.1 mM-carbachol in longitudinal muscle of the guinea-pig ileum increases the incorporation of [3H]inositol into inositol-containing phospholipid. This effect was blocked by 16 microM-atropine. After 60 min incubation, carbachol increased the accumulation of total inositol phosphates 20-fold in the presence of 10 mM-Li+. Less than 20% of the total inositol pho...
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Cells of guinea pig ileal longitudinal muscle layer were dispersed by treating the minced tissue with highly purified collagenase and papain. The cells were spindle shaped, 100 to 150 microns long and 5 to 10 microns wide. Contractility of the dispersed cells was determined by "cell adhesion method" resulting that the cells were contracted by carbachol in a dose-dependent manner, but sensitivit...
متن کاملMuscarinic cholinergic stimulation of phosphatidylinositol turnover in the longitudinal smooth muscle of guinea-pig ileum.
1. The metabolism of phosphatidylinositol and phosphatidate was investigated in fragments of longitudinal smooth muscle from guinea-pig ileum incubated with cholinergic and anticholinergic drugs. 2. Incorporation of Pi into these lipids was enhanced by acetylcholine and carbamoylcholine. 3. The receptor responsible for triggering this response was of the muscarinic type, since (a) the response ...
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ژورنال
عنوان ژورنال: Japanese Journal of Pharmacology
سال: 1981
ISSN: 0021-5198
DOI: 10.1016/s0021-5198(19)52860-8