Articles: PDF OnlyThe Molecular Basis for Lacidipine's Unique Pharmacokinetics Optimal Hydrophobicity Results in Membrane Interactions That May Facilitate the Treatment of AtherosclerosisHerbette, Leo G.*†‡; Mason, Pamela E.‡; Gaviraghi, Giovanni§; Tulenko, Thomas N.∥; Mason, Preston R.*‡Author Information *Departments of Radiology, †Medicine, and the ‡Biomolecular Structure Analysis Center, University of Connecticut Health Center, Farmington, Connecticut, U.S.A.; §Glaxo Research Laboratories, Verona, Italy; and ∥Department of Physiology and Biochemistry, Medical College of Pennsylvania, Philadelphia, Pennsylvania, U.S.A. Address correspondence and reprint requests to Dr. L. G. Herbette at Biomolecular Structure Analysis Center, University of Connecticut Health Center, Farmington, CT 06030, U.S.A. Journal of Cardiovascular Pharmacology: Volume 23 - Issue - p S16-S25 Free Abstract Membrane-active drugs can be characterized by direct measurements of their membrane partition coefficients, washout rates from membranes, and washin rates into membranes. There appears to be a correlation between the duration of action of such membrane-active drugs and the membrane partition coefficient in conjunction with the washout rate. Lacidipine has a high membrane partition coefficient compared to other 1,4-dihydropyridine calcium-channel antagonists and a slow washout rate from membranes. Clinically, it also exhibits an extended duration of action. This control at the membrane molecular level may provide an optimal pharmacokinetic profile for lacidipine in the treatment of hypertension. In addition, these same properties may be important for lacidipine as an antiproliferative agent in the treatment of atherosclerosis. © Lippincott-Raven Publishers.