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Rat Model of Blood-brain Barrier Disruption to Allow Targeted Neurovascular Therapeutics
08:43

Rat Model of Blood-brain Barrier Disruption to Allow Targeted Neurovascular Therapeutics

Published on: November 30, 2012

Building a better blood-brain barrier

Courtney Lane-Donovan1, Joachim Herz2,3,4,5

  • 1Department of Neurology, University of California San Francisco, San Franciso, United States.

Elife
|October 11, 2017
PubMed

Abstract:

A new three-dimensional model of the blood-brain barrier can be used to study processes that are involved in neurodegenerative diseases.

Keywords:
Alzheimer diseasecerebrovasculaturehumanhuman biologylipoproteinmedicineneurosciencetissue engineering

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The Blood-brain Barrier00:49

The Blood-brain Barrier

Overview
Physiological Barriers01:25

Physiological Barriers

Physiological barriers are semi-permeable cellular structures restricting drug diffusion into intracellular compartments and tissues. There are six types of physiological barriers: blood endothelial, cell membrane, blood-brain, blood-cerebrospinal fluid (CSF), blood-placenta, and blood-testis barriers.
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
Factors Affecting Drug Distribution: Physiological Barriers01:23

Factors Affecting Drug Distribution: Physiological Barriers

Drug distribution in the body is intricately regulated by various physiological barriers that control the passage of substances. These include the capillary endothelial barrier, the blood-brain, blood-cerebrospinal fluid, blood-placental, and blood-testis barriers.
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...

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