Related Experiment Video
Updated: May 16, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader
Published on: May 24, 2024
Screening of plant extracts and plant constituents for calcium-channel blocking activity
K Neuhaus-Carlisle1, W Vierling, H Wagner
1Institut für Pharmazeutische Biologie der Universität München, München, Germany.
Abstract:
Various constituents isolated from plants with described or suggested antihypertensive, spasmolytic or diuretic activity were tested in an in in vitro-guinea pig papillary muscle model for possible calcium-channel blocking activity. Among the isolated compounds some phenylpropanoids of essential oil (e.g. apiol), mono- and sesquiterpene derivatives (e.g. bisabolol-oxide A), naphthoquinones (e.g. juglone, 7-methyljuglone, plumbagin, garlic constituents), some phenolics and alkaloids showed good to moderate activity (IC(50):15-100 μM). Some of the tested compounds caused a prolonged duration of the contraction, suggesting an additional K(+)-channel blocking effect.
More Related Videos
08:46Forward Genetic Screen Using Transgenic Calcium Reporter Aequorin to Identify Novel Targets in Calcium Signaling
Published on: August 1, 2020
08:20Systematic Approach to Identify Novel Antimicrobial and Antibiofilm Molecules from Plants' Extracts and Fractions to Prevent Dental Caries
Published on: March 31, 2021
Related Concept Videos
Antihypertensive Drugs: Action of Calcium Channel Blockers
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Antiepileptic Drugs: Calcium Channel Blockers
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
Patch Clamp
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...