SU-8 based microprobes for simultaneous neural depth recording and drug delivery in the brain

Ane Altuna, Elisa Bellistri, Elena Cid, Paloma Aivar, Beatriz Gal, Javier Berganzo, Gemma Gabriel, Anton Guimerà, Rosa Villa, Luis J. Fernández, Liset Menendez De La Prida

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

While novel influential concepts in neuroscience bring the focus to local activities generated within a few tens of cubic micrometers in the brain, we are still devoid of appropriate tools to record and manipulate pharmacologically neuronal activity at this fine scale. Here we designed, fabricated and encapsulated microprobes for simultaneous depth recording and drug delivery using exclusively the polymer SU-8 as structural material. A tetrode- and linear-like electrode patterning was combined for the first time with single and double fluidic microchannels for independent drug delivery. The device was tested experimentally using the in vivo anesthetized rat preparation. Both probe types successfully recorded detailed spatiotemporal features of local field potentials and single-cell activity at a resolution never attained before with integrated fluidic probes. Drug delivery was achieved with high spatial and temporal precision in a range from tens of nanoliters to a few microliters, as confirmed histologically. These technological advancements will foster a wide range of neural applications aimed at simultaneous monitoring of brain activity and delivery at a very precise micrometer scale.

Original languageEnglish
Pages (from-to)1422-1430
Number of pages9
JournalLab on a Chip - Miniaturisation for Chemistry and Biology
Volume13
Issue number7
DOIs
Publication statusPublished - Apr 7 2013

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Drug delivery
Brain
Fluidics
Pharmaceutical Preparations
Neurosciences
Microchannels
Rats
Polymers
Electrodes
Equipment and Supplies
Monitoring

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Altuna, A., Bellistri, E., Cid, E., Aivar, P., Gal, B., Berganzo, J., ... Menendez De La Prida, L. (2013). SU-8 based microprobes for simultaneous neural depth recording and drug delivery in the brain. Lab on a Chip - Miniaturisation for Chemistry and Biology, 13(7), 1422-1430. https://doi.org/10.1039/c3lc41364k

SU-8 based microprobes for simultaneous neural depth recording and drug delivery in the brain. / Altuna, Ane; Bellistri, Elisa; Cid, Elena; Aivar, Paloma; Gal, Beatriz; Berganzo, Javier; Gabriel, Gemma; Guimerà, Anton; Villa, Rosa; Fernández, Luis J.; Menendez De La Prida, Liset.

In: Lab on a Chip - Miniaturisation for Chemistry and Biology, Vol. 13, No. 7, 07.04.2013, p. 1422-1430.

Research output: Contribution to journalArticle

Altuna, A, Bellistri, E, Cid, E, Aivar, P, Gal, B, Berganzo, J, Gabriel, G, Guimerà, A, Villa, R, Fernández, LJ & Menendez De La Prida, L 2013, 'SU-8 based microprobes for simultaneous neural depth recording and drug delivery in the brain', Lab on a Chip - Miniaturisation for Chemistry and Biology, vol. 13, no. 7, pp. 1422-1430. https://doi.org/10.1039/c3lc41364k
Altuna, Ane ; Bellistri, Elisa ; Cid, Elena ; Aivar, Paloma ; Gal, Beatriz ; Berganzo, Javier ; Gabriel, Gemma ; Guimerà, Anton ; Villa, Rosa ; Fernández, Luis J. ; Menendez De La Prida, Liset. / SU-8 based microprobes for simultaneous neural depth recording and drug delivery in the brain. In: Lab on a Chip - Miniaturisation for Chemistry and Biology. 2013 ; Vol. 13, No. 7. pp. 1422-1430.
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