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A microfabricated fluidic chamber for the perfusion of brain slices

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3 Author(s)
Passeraub, P.A. ; Dept. of Biomed. Eng., Johns Hopkins Univ., Baltimore, MD, USA ; Almeida, A.C. ; Thakor, N.V.

A novel perfusion chamber for brain slice studies was developed, based on the Haas interface chamber principle. The 400-μm high chamber is integrated on top of a glass substrate using a standard microfabrication process and is filled with arrays of micropillars to confine and to hold the perfusion fluid within its 11 ×29 mm2 area. The micropillars also uphold the brain slice at the "perfusate-gas" interface optimizing the delivery of oxygen as well as of nutrients. With a flow of 30 ml/h, the renewal rate is less than one minute, which permits rapid exchange of the perfusion medium. Successful reproduction of a zero-Mg2+ model of epileptiform activity in rat hippocampal slices using this chamber demonstrates its utility for electrophysiological experimentation.

Published in:

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint  (Volume:3 )

Date of Conference:

23-26 Oct. 2002

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