Clinical studies with calcium antagonists in asthma.

Calcium antagonists in exercise-induced asthma.

Ten patients with exercise-induced asthma participated in a single-blind trial comparing the protective effects of inhaled verapamil (estimated dose 3 mg) and sodium cromoglycate (estimated dose 12 mg). Saline was used as control. Effects were assessed from the mean maximal percentage fall in forced expiratory volume in one second (FEV1) after running on a treadmill for eight minutes. There was...

Effect of calcium antagonists in experimental asthma.

Verapamil was found to be an effective inhibitor of isometric tension in in vitro, experimental anaphylaxis in guinea pig trachealis smooth muscle. The mean IC50 for protection studies was 2 X 10(-4) M; the drug was also effective as a bronchoreversal agent. The inhibitory effect of verapamil upon the initial rate of isometric muscle tension suggests an action beyond simple calcium channel inhi...

Clinical pharmacology of calcium antagonists. Satellite symposium on calcium antagonists.

A new class of agents has been made available for the treatment of hypertension. These calcium antagonists have rapid bioavailability and dramatic antihypertensive effects through reduction of total peripheral resistance and the vascular resistance of the major target organs of the body. These changes are usually associated with unchanged cardiac output, preserved organ blood flows, maintained ...

Calcium antagonists. Pharmacology and clinical research.

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Atherosclerosis, calcium, and calcium antagonists.