A multi-modal MRI study of the central response to inflammation in rheumatoid arthritis

Andrew Schrepf* (Corresponding Author), Chelsea M. Kaplan, Eric Ichesco, Tony Larkin, Steven E. Harte, Richard E. Harris, Alison D. Murray, Gordon D. Waiter, Daniel J. Clauw, Neil Basu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)
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Abstract

It is unknown how chronic inflammation impacts the brain. Here, we examined whether higher levels of peripheral inflammation were associated with brain connectivity and structure in 54 rheumatoid arthritis patients using functional and structural MRI. We show that higher levels of inflammation are associated with more positive connections between the inferior parietal lobule (IPL), medial prefrontal cortex, and multiple brain networks, as well as reduced IPL grey matter, and that these patterns of connectivity predicted fatigue, pain and cognitive dysfunction. At a second scan 6 months later, some of the same patterns of connectivity were again associated with higher peripheral inflammation. A graph theoretical analysis of whole-brain functional connectivity revealed a pattern of connections spanning 49 regions, including the IPL and medial frontal cortex, that are associated with peripheral inflammation. These regions may play a critical role in transducing peripheral inflammatory signals to the central changes seen in rheumatoid arthritis.
Original languageEnglish
Article number2243
Number of pages11
JournalNature Communications
Volume9
DOIs
Publication statusPublished - 8 Jun 2018

Keywords

  • Chronic inflammation
  • Neural circuits
  • Neuroimmunology
  • Rheumatoid arthritis

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