Prediction of intestinal absorption and blood-brain barrier penetration by computational methods

D E Clark1

  • 1Aventis Pharma Ltd, Rainham Road South, Dagenham, RM10 7XS, United Kingdom. david.clark@argentadiscovery.com

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When drugs are injected intravenously, they directly enter the systemic circulation. Alternatively, orally administered drugs navigate through the gastrointestinal (GI) tract.
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Passive Diffusion: Overview and Kinetics

Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
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