A few observations and much reasoning leads to error; many observations and a little reasoning to truth.-Alexis Carrell oncerns have been raised about safety of calcium channel blockers in patients with heart failure since their introduction into cardiovascular medicine more than 25 years ago. By inhibiting the influx of calcium into myocardial cells, calcium channel-blocking drugs can depress ...

Based on QSAR studies two new DHP calcium-channel blockers, mebudipine and dibudipine, were synthesis and evaluated for their pharmacological activity in various tissues. These studies showed that, these compounds, with potency comparable or greater than that of nifedipine could relax the smooth muscles of various vascular tissues. Electrophysiological study showed that they antagonized calcium...

In the elderly, calcium-channel blockers are the first-line treatment for hypertension, and macrolides are commonly prescribed antibiotics. Here we report a 78-year-old man taking nifedipine, diltiazem and carvedilol who presented with persistent hypotension and bradycardia after clarithromycin was prescribed. He was diagnosed with drug-induced hypotension and treated with fluid resuscitation a...

Large numbers of drugs are used in the treatment of hypertension and Calcium Channel Blockers are an important group among them. Cilnidipine is a new calcium channel blocking drug distinguished from other L-type calcium channel blockers with additional N-type of calcium channel blocking property. Cardioprotective, renoprotective and neuroprotective action of cilnidipine can provide additional b...

This study was designed to determine whether neuroleptic drugs have calcium channel blocking activity in isolated rings of rabbit thoracic aorta. The results confirm previous findings that pimozide and penfluridol are calcium channel blockers. However, the data do not support the conclusion that these agents are selective for the voltage-sensitive calcium channel. The results also show that bot...

BACKGROUND This report presents 13 years of experience with vasodilator therapy for primary pulmonary hypertension (PPH) in children. Two eras were involved: between 1982 and 1987, oral calcium channel blockers were the only agents available for long-term therapy; after 1987, prostacyclin (PGI2) has been available for long-term intravenous use. METHODS AND RESULTS Seventy-four children underw...

AIMS In this study, we tested whether Egr-1 is a potential target of calcium channel blockers in cardioprotection with I/R injury. METHODS We treated rats in vivo I/R and rat cultured cardiomyocytes in vitro hypoxia/reoxygenation (H/R) models with three types of classical calcium channel blockers (verapamil, diltiazem and nifedipine). Activity of creatine kinase (CK), lactate dehydrogenase (L...

Zinniol [1,2-bis(hydroxymethyl)-3-methoxy-4-methyl-5-(3-methyl-2-butenyloxy)benzene], a toxin produced by fungi of the Alternaria group, causes symptoms in plants that resemble those induced by the fungi. The phytotoxin binds to carrot protoplasts and isolated membranes in a saturable and reversible manner. Receptor occupancy stimulates entry of calcium into protoplasts. Zinniol can partially r...

Calcium channel blockers are widely used in the treatment of cardiovascular disorders for their actions on the voltage sensitive calcium channels in cardiac and smooth muscles. The reorganization on calcium channel antagonist binding sites in the limbic regions of the brain, raises the hope that these might also be helpful in some behavioural disorders. Calcium channel blockers act by blocking ...