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Calcium, calcium channels, and calcium channel antagonists

Canadian Journal of Physiology and Pharmacology, 1990
Voltage-dependent Ca2+ channels are an important pathway for Ca2+ influx in excitable cells. They also represent an important site of action for a therapeutic group of agents, the Ca2+ channel antagonists. These drugs enjoy considerable use in the cardiovascular area including angina, some arrhythmias, hypertension, and peripheral vascular disorders ...
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Calcium Requirement and Calcium Therapy

Clinical Orthopaedics and Related Research, 1979
The mean calcium requirement of normal adults has been estimated from 212 calcium balances on 84 normal subjects and found to be 578 mg. The calcium allowance required to ensure that 95% of normal adults are in calcium balance is about 900 mg. Calcium requirement is relatively higher than that of phosphorus or magnesium because plasma calcium--and ...
B E, Nordin   +4 more
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Calcium

2003
This chapter describes the chemical and biological value of the calcium ion. In calcium chemistry, our main interest is in equilibria within static, nonflowing systems. Hence, we examined the way calcium formed precipitates and complex ions in solution.
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CALCIUM BIOAVAILABILITY FROM CALCIUM CARBONATE ANDCALCIUM CITRATE

The Journal of Clinical Endocrinology & Metabolism, 1985
Fourteen normal subjects took 1000 mg calcium orally as calcium citrate or calcium carbonate. The amount of calcium absorbed was estimated from the rise in urinary calcium. The urinary calcium following calcium citrate load significantly higher (by 20-66%), whether expressed as the total amount or as the increment above basal (fasting) excretion. Thus,
M J, Nicar, C Y, Pak
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Atherogenesis, calcium and calcium antagonists

The American Journal of Cardiology, 1990
Hypercholesterolemia and arterial hypertension are highly interrelated risk factors of atherosclerosis. Early lesions in nonhuman primates with dietary hypercholesterolemia resemble atherosclerotic lesions demonstrable in the arteries of American children with comparably elevated plasma cholesterol levels.
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Calcium Antagonists

Cardiology, 1985
At present nitrates remain the initial treatment for relief or prevention of angina in patients with coronary artery disease. In cases where nitrates and beta blockers have been used and are ineffective for managing effort angina, calcium antagonists may be substituted or added to the beta-blocking treatment. When the predominant symptom is rest angina,
C R, Conti   +3 more
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Calcium absorption and calcium bioavailability

Journal of Internal Medicine, 1992
Calcium is important for bone health. It has been customary to focus on dietary calcium intake, but of central importance for the body needs in the individual patient is the actual calcium absorption. This absorption consists of an active vitamin D‐mediated component and a passive diffusional component.
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Intestinal Calcium Absorption: Calcium Entry ,

The Journal of Nutrition, 1992
Any consideration of calcium entry into the cell must recognize that it is the initial event in a complex sequentially integrated process. Any step in this process, when viewed individually and in isolation, may appear to be of overwhelming importance, but this need not be an accurate reflection of its relative role in the overall process.
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CALCIUM NEED AND CALCIUM UTILIZATION

Journal of the American Medical Association, 1933
In 1911, Sherman1called attention to the calcium deficiency of the average American dietary. Again, after twenty years, he2stated that "probably a larger proportion of the ordinary dietaries, both of adults and of children, can be improved by enrichment in calcium than in any other one chemical element." It seems surprising, in view of the study and ...
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