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Stress Increases Peripheral Axon Growth and Regeneration through Glucocorticoid Receptor-Dependent Transcriptional Programs.


ABSTRACT: 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.

SUBMITTER: Lerch JK 

PROVIDER: S-EPMC5563843 | biostudies-other | 2017 Jul-Aug

REPOSITORIES: biostudies-other

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Stress Increases Peripheral Axon Growth and Regeneration through Glucocorticoid Receptor-Dependent Transcriptional Programs.

Lerch Jessica K JK   Alexander Jessica K JK   Madalena Kathryn M KM   Motti Dario D   Quach Tam T   Dhamija Akhil A   Zha Alicia A   Gensel John C JC   Webster Marketon Jeanette J   Lemmon Vance P VP   Bixby John L JL   Popovich Phillip G PG  

eNeuro 20170701 4


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 (<i>Mus musculus</i>) basal GC receptor (<i>Nr3c1</i>, also known as GR) expression in dorsal root ganglion (DRG) sensory neuro  ...[more]

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