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Related Experiment Video

Updated: Nov 15, 2025

Brain Slice Stimulation Using a Microfluidic Network and Standard Perfusion Chamber
27:58

Brain Slice Stimulation Using a Microfluidic Network and Standard Perfusion Chamber

Published on: October 1, 2007

11.2K

A microfluidic bubble perfusion device for brain slice culture.

Amirus Saleheen1, Debalina Acharyya, Rebecca A Prosser

  • 1Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.

Analytical Methods : Advancing Methods and Applications
|March 1, 2021
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel microfluidic bubble perfusion device for ex vivo brain slice culture, improving neurophysiology research. The system successfully maintains viable brain tissue slices for extended periods using carbogen gas bubbles and a unique adhesive.

Area of Science:

  • Neuroscience
  • Bioengineering
  • Microfluidics

Background:

  • Ex vivo brain slice cultures are vital for neurophysiology research.
  • Current methods like roller tubes and membrane interfaces have limitations.
  • Organ-on-chip technologies highlight the potential of microfluidic perfusion systems.

Purpose of the Study:

  • To present a novel microfluidic brain slice culture system addressing oxygen demands.
  • To demonstrate proof-of-principle for a microfluidic bubble perfusion device.
  • To overcome challenges in tissue immobilization and perfusion control.

Main Methods:

  • Utilized droplet microfluidics to create perfusion media droplets dispersed in carbogen gas bubbles.
  • Employed a two-part cytocompatible carbohydrate-based adhesive for tissue immobilization.

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Last Updated: Nov 15, 2025

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  • Designed perfusion chambers to maintain segmented flow and controlled droplet/bubble parameters.

    • Main Results:

    • Achieved controlled droplet/bubble volumes (4-15 μL) and bubble generation frequency (1-7 bubbles/min).
    • Maintained bubble duty cycle control (20-80%).
    • Successfully cultured murine hypothalamic slices for 8-10 hours, confirming viability via Ca2+ imaging and PI staining.

    Conclusions:

    • The microfluidic bubble perfusion device offers a promising new method for ex vivo brain slice culture.
    • This approach effectively meets the high oxygen demands of brain tissue.
    • The system demonstrates sustained tissue viability and potential for advanced neurophysiology studies.