Stress and glucocorticoid (GC) release are common behavioral and hormonal responses to injury or disease. In the brain, stress/GCs can alter neuron structure and function leading to cognitive impairment. Stress and GCs also exacerbate pain, but whether a corresponding change occurs in structural plasticity of sensory neurons is unknown. Here, we show that in female mice (Mus musculus) basal GC receptor (Nr3c1, also known as GR) expression in dorsal root ganglion (DRG) sensory neurons is 15-fold higher than in neurons in canonical stress-responsive brain regions (M. musculus). In response to stress or GCs, adult DRG neurite growth increases through mechanisms involving GR-dependent gene transcription. In vivo, prior exposure to an acute systemic stress increases peripheral nerve regeneration. These data have broad clinical implications and highlight the importance of stress and GCs as novel behavioral and circulating modifiers of neuronal plasticity.
|State||Published - Jul 1 2017|
Bibliographical noteFunding Information:
analyzed data; J.K.L., J.K.A., K.M.M., V.P.L., J.L.B., and P.G.P. wrote the paper. This work was supported by National Institute of Neurological Disorders and Stroke Grants R01 NS083942 (to P.G.P.) and R01 HD057632 (to V.P.L. and J.L.B.). *J.K.L. and J.K.A. contributed equally to this work. Acknowledgments: We thank Kate Zakharova and Perry Delvin for technical assistance. Correspondence should be addressed to either of the following: Jessica K. Lerch, 460 West 12th Avenue, BRT0696, Columbus, OH 43210, E-mail: email@example.com; or Phillip G. Popovich, 460 West 12th Avenue, BRT694, Columbus, OH 43210, E-mail: firstname.lastname@example.org. DOI:http://dx.doi.org/10.1523/ENEURO.0246-17.2017 Copyright © 2017 Lerch et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
© 2017 Lerch et al.
- Dorsal root ganglia
- Glucocorticoid receptor
ASJC Scopus subject areas
- Neuroscience (all)