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Updated: Aug 23, 2025

Real-time Iontophoresis with Tetramethylammonium to Quantify Volume Fraction and Tortuosity of Brain Extracellular Space
Published on: July 24, 2017
Diffusive drug delivery in the brain extracellular space from a cellular scale microtube
Marie-Joe Störi1, Pelumi W Oluwasanya1, Christopher M Proctor1
1Engineering Department, University of Cambridge, Cambridge, UK.
Abstract:
The effectiveness of state-of-the-art systemic treatments for neurological disorders is hampered not only by the difficulty in crossing the blood brain barrier but also off-target drug interactions. In this study, a delivery method is simulated for a novel U-shaped microtube locally infusing drugs directly into the extracellular space of the brain and relying on diffusion as a transport mechanism. The influence of flow rate, drug properties and device geometry are investigated. It is anticipated that these findings will accelerate progress on both developmental and applied drug delivery and materials research.
Supplementary Information:
The online version contains supplementary material available at 10.1557/s43579-022-00247-9.
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