The density difference between tissue and neural probes is a key factor for glial scarring.
Författare
Summary, in English
A key to successful chronic neural interfacing is to achieve minimal glial scarring surrounding the implants, as the astrocytes and microglia may functionally insulate the interface. A possible explanation for the development of these reactions is mechanical forces arising between the implants and the brain. Here, we show that the difference between the density of neural probes and that of the tissue, and the resulting inertial forces, are key factors for the development of the glial scar. Two probes of similar size, shape, surface structure and elastic modulus but differing greatly in density were implanted into the rat brain. After six weeks, significantly lower astrocytic and microglial reactions were found surrounding the low-density probes, approaching no reaction at all. This provides a major key to design fully biocompatible neural interfaces and a new platform for in vivo assays of tissue reactions to probes with differing materials, surface structures, and shapes.
Avdelning/ar
Publiceringsår
2013
Språk
Engelska
Publikation/Tidskrift/Serie
Scientific Reports
Volym
3
Issue
Oct 15
Fulltext
- Available as PDF - 864 kB
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Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Nature Publishing Group
Ämne
- Neurosciences
Status
Published
Forskningsgrupp
- Neuronano Research Center (NRC)
- Neurophysiology
ISBN/ISSN/Övrigt
- ISSN: 2045-2322