Format

Send to

Choose Destination
J Neurosci Methods. 2012 Feb 15;204(1):19-27. doi: 10.1016/j.jneumeth.2011.10.011. Epub 2011 Oct 20.

A transgenic rat expressing green fluorescent protein (GFP) in peripheral nerves provides a new hindlimb model for the study of nerve injury and regeneration.

Author information

1
Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO 63110, USA.
2
The Hospital for Sick Children Division of Plastic and Reconstructive Surgery, Toronto, Canada M5G1X8; University of Toronto Department of Surgery, Toronto, Canada M5G1X8; University of Toronto Institute of Biomaterials and Biomedical Engineering, Toronto, Canada M5G1X8.
3
Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO 63110, USA. Electronic address: mackinnon@wudosis.wustl.edu.

Abstract

BACKGROUND:

In order to evaluate nerve regeneration in clinically relevant hindlimb surgical paradigms not feasible in fluorescent mice models, we developed a rat that expresses green fluorescent protein (GFP) in neural tissue.

METHODS:

Transgenic Sprague-Dawley rat lines were created using pronuclear injection of a transgene expressing GFP under the control of the thy1 gene. Nerves were imaged under fluorescence microscopy and muscles were imaged with confocal microscopy to determine GFP expression following sciatic nerve crush, transection and direct suturing, and transection followed by repair with a nerve isograft from nonexpressing littermates.

RESULTS:

In each surgical paradigm, fluorescence microscopy demonstrated the loss and reappearance of fluorescence with regeneration of axons following injury. Nerve regeneration was confirmed with imaging of Wallerian degeneration followed by reinnervation of extensor digitorum longus (EDL) muscle motor endplates using confocal microscopy.

CONCLUSION:

The generation of a novel transgenic rat model expressing GFP in neural tissue allows in vivo imaging of nerve regeneration and visualization of motor endplate reinnervation. This rat provides a new model for studying peripheral nerve injury and regeneration over surgically relevant distances.

PMID:
22027490
DOI:
10.1016/j.jneumeth.2011.10.011
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center