Sex differences in peripheral not central immune responses to pain-inducing injury

Douglas M. Lopes, Natalia Malek, Michelle Edye, Sara Buskbjerg Jager, Sheridan McMurray, Stephen B. McMahon*, Franziska Denk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)
81 Downloads (Pure)

Abstract

Women suffer chronic pain more frequently than men. It is not clear whether this is due to differences in higher level cognitive processes or basic nociceptive responses. In this study we used a mouse model of neuropathic pain to dissociate these factors. We performed RNA-seq on purified peripheral afferent neurons, but found no striking differences in gene expression between male and female mice, neither before nor after nerve injury. Similarly, spinal cord immune responses between the sexes appeared to be indistinguishable when studied by flow cytometry or qRT-PCR. Differences emerged only upon studying peripheral immune cell infiltration into the dorsal root ganglion, suggesting that adaptive immune responses in neuropathic pain could be sexually dimorphic.

Original languageEnglish
Article number16460
Pages (from-to)1-8
Number of pages8
JournalScientific Reports
Volume7
Issue number1
Early online date28 Nov 2017
DOIs
Publication statusPublished - 2017

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