Cytosolic Ca2+-tension relationship in tracheal smooth muscle
نویسندگان
چکیده
منابع مشابه
Carotid sinus baroreceptors modulate tracheal smooth muscle tension in dogs.
Arterial baroreceptors are known to influence airway smooth muscle tone. Thus, increasing carotid sinus pressure from 20 to 200 mm Hg causes reflex tracheal dilation. However, the effects of changing sinus pressure around a normal arterial pressure set-point of 100 mm Hg have not been examined. In anesthetized, artificially ventilated dogs, we distended the vascularly isolated carotid sinuses w...
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Vascular smooth muscle of the frog was skinned by 0.2 mg/ml saponin for 20 mm. The skinned preparations activated by Ca2+, at 2 mmol/l Mg2+ and MgATP2-, gave half maximal force at Ca2+ = (1.32 +/- 0.07) x 10(-6) mol/l and maximal force at Ca2+ = 3.16 x 10(-5) mol/l (35 +/- 4% of the maximal contraction induced by KCl in living smooth muscles). The Hill coefficient was 1.51 +/- 0.11. Thus, the s...
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ژورنال
عنوان ژورنال: Japanese Journal of Pharmacology
سال: 1990
ISSN: 0021-5198
DOI: 10.1016/s0021-5198(19)55588-3