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  Electrophysiological recordings of patterned rat brain stem slice neurons

Lauer, L., Vogt, A., Yeung, C. K., Knoll, W., & Offenhäusser, A. (2002). Electrophysiological recordings of patterned rat brain stem slice neurons. Biomaterials, 23(15), 3123-3130.

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 Creators:
Lauer, L.1, Author           
Vogt, A.1, Author           
Yeung, C. K.1, Author           
Knoll, Wolfgang1, Author           
Offenhäusser, Andreas1, Author           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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Free keywords: brain slices cultures; cell migration; micro-contact printing; laminin; patterned substrates; electrophysiology
 Abstract: Dissociated neuronal Cultures on substrates patterned with extracellular matrix (ECM) proteins have yielded much information in the past. However, although the culture of brain slices has many advantages over dissociated neuronal cultures, its feasibility on patterned substrates has not been demonstrated to date. In the present study, neuronal outgrowth from brain stem slices onto homogeneous Control substrates, and onto laminin Structures of grid- and line-shape was achieved. Cultures were evaluated by means of phase contrast microscopy, antibody staining, and patch-clamp measurements. Only patterns with line sizes of more than 4mum yielded satisfactory neuronal outgrowth. The size of the nodes in the pattern influenced the nodal compliance of the spreading cells and the amount of unstructured overgrowth. Best grid patterns were 4 pin lines and 10 pin nodes, best line patterns were 4 pin lines and 20 mum nodes. On patterned substrates, average sodium and potassium currents were reduced by similar to50% compared to controls, whereas area-normalized ion-currents were in the same order of magnitude. This indicates that as a consequence of the pattern-enforced geometrical confinement, neurons tend to have a smaller surface. In addition, neurons on patterned substrates were rapidly covered with glial overgrowth. This was shown by antibody staining. (C) 2002 Published by Elsevier Science Ltd.

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Language(s): eng - English
 Dates: 2002-08
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28702
ISI: 000176268800007
 Degree: -

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Title: Biomaterials
  Alternative Title : Biomaterials
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 23 (15) Sequence Number: - Start / End Page: 3123 - 3130 Identifier: ISSN: 0142-9612