HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Barrett, T. D. Articles by Maurice, D. H. Search for Related Content PubMed PubMed Citation Articles by Barrett, T. D. Articles by Maurice, D. H.

Mechanism of Tissue-Selective Drug Action in the Cardiovascular System

¹ Department of Physiological Systems, Johnson & Johnson Pharmaceutical Research & Development L.L.C., San Diego, CA;
² School of Pharmacy and Pharmaceutical Sciences, SUNY at Buffalo, Buffalo, NY;
³ Departmentent of Pharmacology & Therapeutics, University of British Columbia, Vancouver BC Canada;
⁴ Department of Pharmacology & Toxicology, Queen’s University, Kingston ON Canada

Analysis of the human genome project tells us that there may be as few as 3000 genes that are likely to be good drug targets. Although the number of targets is still very large, these data have been interpreted by some to mean that the pharmaceutical industry may someday run out of novel drug targets. Despite the doom and gloom of such analysis, there is considerable reason for optimism. Drugs may exhibit selectivity of action beyond that predicted by target expression alone. Drugs that act at a single molecular target may have very different pharmacology and, as a result, different therapeutic uses. Three well-characterized model systems are highlighted to illustrate this point. The first model system is exemplified by nifedipine and verapamil, both of which act on L-type calcium channels. Both drugs are used to treat hypertension, but only verapamil can be used to produce atrioventriclar block in patients with atrial fibrillation. The second model system describes the therapeutic exploitation of unusual conditions that occur in the ischemic myocardium to produce drugs that are more effective for suppressing ischemia-induced arrhythmias. The third model system discusses the mechanisms through which phosphodiesterase-5 (PDE5) inhibitors act selectively to facilitate penile erection while having little effect in the non-penile vasculature that also expresses PDE5.

This article has been cited by other articles:

				D. I. Diz Future Directions in Cardiovascular Pharmacology: Examples from the Renin-Angiotensin System Mol. Interv., October 1, 2008; 8(5): 222 - 225. [Abstract] [Full Text] [PDF]