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Self-Nanoemulsification of Healthy Oils to Enhance the Solubility of Lipophilic Drugs

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Drug-lipid interaction evaluation: why a 19th century solution?

Marta M B Ribeiro¹, Manuel N Melo, Isa D Serrano

¹Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Portugal.

Trends in Pharmacological Sciences

|August 24, 2010

Summary

Lipophilicity, crucial for drug absorption, is better measured by lipid vesicle methods than the traditional octanol-water partition coefficient. These advanced techniques improve drug development efficiency and accuracy.

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Area of Science:

Pharmacology and Drug Development
Membrane Biophysics

Background:

Lipophilicity, a drug's affinity for biological membranes, significantly impacts absorption, distribution, metabolism, and excretion (ADME).
The traditional octanol-water partition coefficient (P(o/w)) is a limited measure of lipophilicity, particularly for polar or charged molecules.
Advancements in understanding biological membranes have outpaced the utility of P(o/w).

Observation:

Lipid vesicle-based methods offer a more accurate assessment of drug partitioning into membranes compared to P(o/w).
These methods allow for customization of lipid composition to mimic specific biological conditions.
Certain lipid vesicle assays are amenable to high-throughput screening.

Findings:

Lipid vesicle methods provide a more realistic determination of drug-membrane interactions.
The flexibility in lipid composition enhances the biological relevance of lipophilicity assessments.
High-throughput screening capabilities accelerate the evaluation of drug candidates.

Implications:

Shifting membrane partition determination to earlier stages of drug development streamlines the R&D process.
More accurate lipophilicity assessment reduces investment in unpromising drug leads.
Improved efficiency in early-stage drug discovery saves time and financial resources.