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Calcium channel blockers (CCB), calcium channel antagonists or calcium antagonists [2] are a group of medications that disrupt the movement of calcium (Ca 2+) through calcium channels. [3] Calcium channel blockers are used as antihypertensive drugs, i.e., as medications to decrease blood pressure in patients with hypertension.
Studies have shown that the intrathecal injection of the calcium channel inhibitor ziconotide, to block the N-type calcium channels, have produced alleviation of intractable pain. [12] Blockade of the N-type calcium channel is a potential therapeutic strategy for the treatment of alcoholism. Because prolonged alcohol exposure over time has been ...
Calcium channel blockers (CCBs) preferentially block the L-type voltage-gated calcium channels to prevent the flow of calcium influx in the blood vessels and the heart, thereby reducing peripheral vascular resistance and cardiac output respectively. [10] Dihydropyridines (DHP): amlodipine, nifedipine, felodipine, nicardipine
Compared with certain other L-type calcium channel blockers (for example those of the phenylalkylamine class such as verapamil) that have significant action at the heart, the dihydropyridine calcium channel blockers lower blood pressure mainly by relaxing the smooth muscle of the blood vessel walls. [3]
Most drugs have other uses; sometimes the presence of other symptoms can warrant the use of one particular antihypertensive. Examples include: Age can affect the choice of medications. Current UK guidelines suggest starting patients over the age of 55 years first on calcium channel blockers or thiazide diuretics.
Molecules that act as channel blockers are important in the field of pharmacology, as a large portion of drug design is the use of ion channel antagonists in regulating physiological response. The specificity of channel block molecules on certain channels makes it a valuable tool in the treatment of numerous disorders.
One of the most recognized characteristics of the L-type calcium channel is its unique sensitivity to 1,4-dihydropyridines (DHPs). [3] Unlike other voltage gated calcium channels, L-type calcium channels are resistant to ⍵-CT X (GVIA) and ⍵-AG A (IVA) inhibitory drugs. [3] A well observed form of modulation is due to alternative splicing. A ...
7 Calcium channel blockers. 8 Antimineralocorticoid. 9 Antiplatelet drug. 10 Anticoagulant. 11 Fibrinolytics. 12 Diuretics. 13 References. Toggle the table of contents.