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Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents
10:53

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Published on: July 3, 2013

Pharmacological aspects of calcium antagonism. Short term and long term benefits

W G Nayler1

  • 1Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Victoria, Australia.

Drugs
|January 1, 1993
PubMed

Insights

Calcium antagonists manage cardiovascular disorders by blocking calcium entry, reducing blood pressure, and protecting the heart and blood vessels. Their primary action of lowering intracellular calcium ions (Ca++) drives both short-term and long-term benefits.

Area of Science:

  • Cardiovascular Pharmacology
  • Cellular Physiology

Background:

  • Calcium antagonists are crucial for treating cardiovascular diseases like hypertension and atherosclerosis.
  • These drugs function by inhibiting calcium ion (Ca++) influx through specific cellular channels.

Purpose of the Study:

  • To elucidate the cellular mechanisms underlying the cardiovascular and vascular protective effects of calcium antagonists.
  • To differentiate between immediate and long-term benefits of calcium channel blockade.

Main Methods:

  • Review of existing literature on calcium antagonist pharmacology.
  • Analysis of cellular and physiological effects of calcium ion (Ca++) channel blockade.

Main Results:

  • Calcium antagonists limit Ca++ entry, reducing blood pressure and protecting the myocardium.
  • Long-term benefits include vascular protection, attenuated cardiac hypertrophy, and improved diastolic function.

Conclusions:

  • The primary mechanism for both acute and chronic benefits of calcium antagonists is the reduction of intracellular Ca++.
  • This cellular action underpins their efficacy in managing diverse cardiovascular conditions.

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