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Bioavailability Enhancement: Drug Permeability Enhancement01:27

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After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
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Setting-up an In Vitro Model of Rat Blood-brain Barrier BBB: A Focus on BBB Impermeability and Receptor-mediated Transport
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[Lead compound optimization strategy (4)--improving blood-brain barrier permeability through structural

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    The blood-brain barrier protects the brain but hinders drug delivery. This review covers strategies to enhance drug permeability across the blood-brain barrier for central nervous system treatments.

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    Area of Science:

    • Neuroscience
    • Pharmacology
    • Medicinal Chemistry

    Background:

    • The blood-brain barrier (BBB) is a critical protective mechanism for the central nervous system (CNS).
    • It prevents xenobiotics from entering the CNS but also obstructs the delivery of potential CNS-targeting drugs.
    • Overcoming BBB limitations is crucial for developing effective treatments for neurological disorders.

    Purpose of the Study:

    • To review recent advancements in understanding blood-brain barrier permeability.
    • To summarize lead optimization strategies for improving drug penetration across the BBB.
    • To provide insights into overcoming a major hurdle in CNS drug development.

    Main Methods:

    • Review of current literature on blood-brain barrier research.
    • Analysis of various chemical modification strategies for drug candidates.
    • Examination of structure-property relationships influencing BBB permeability.

    Main Results:

    • Identified key structural modifications that enhance BBB permeability.
    • Discussed strategies including increased lipophilicity, reduced polarity, and molecular simplification.
    • Highlighted the importance of avoiding transporter efflux mechanisms like P-glycoprotein.

    Conclusions:

    • Several structure optimization techniques can improve drug permeability across the blood-brain barrier.
    • These strategies offer promising avenues for developing novel CNS therapeutics.
    • Further research into BBB transport mechanisms is essential for advancing drug discovery.