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Sustained perturbation in functional connectivity induced by cold pain.

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cam.issuedOnline2021-07-27
dc.contributor.authorMakovac, Elena
dc.contributor.authorDipasquale, Ottavia
dc.contributor.authorJackson, Jade B
dc.contributor.authorMedina, Sonia
dc.contributor.authorO'Daly, Owen
dc.contributor.authorO'Muircheartaigh, Jonathan
dc.contributor.authorde Lara Rubio, Alfonso
dc.contributor.authorWilliams, Steven CR
dc.contributor.authorMcMahon, Stephen B
dc.contributor.authorHoward, Matthew A
dc.contributor.orcidJackson, J.B. [0000-0002-9066-2627]
dc.date.accessioned2021-11-11T00:30:56Z
dc.date.available2021-11-11T00:30:56Z
dc.date.issued2020-10
dc.description.abstractBACKGROUND: Functional connectivity (FC) perturbations have been reported in multiple chronic pain phenotypes, but the nature of reported changes varies between cohorts and may relate to the consequences of living with chronic-pain related comorbidities, such as anxiety and depression. Healthy volunteer studies provide opportunities to study the effects of tonic noxious stimulation independently of these sequelae. Connectivity changes in task negative and positive networks, for example, the default mode and salience networks (DMN/SN), respectively, have been described, but how these and other connectivity networks, for example, those governing descending pain control are affected by the presence of tonic, noxious stimulation in healthy, pain-free individuals, remains unknown. METHOD: In 20 healthy volunteers, we assessed FC prior to, during, and following tonic cold painful stimulation in the ventromedial prefrontal cortex (vmPFC), rostral anterior insula (rAI), subgenual anterior cingulate cortex (ACC) and periaqueductal grey (PAG). We also recorded subjectively reported pain using a computerised visual analogue scale. RESULTS: We saw DMN FC changes during painful stimulation and that inter-network connectivity between the rAI with the vmPFC increased during pain, whereas PAG-precuneus FC decreased. Pain-induced FC alterations persisted following noxious stimulation. FC changes related to the magnitude of individuals' subjectively reported pain. CONCLUSIONS: We demonstrate FC changes during and following tonic cold-pain in healthy participants. Similarities between our findings and reports of patients with chronic pain suggest that some FC changes observed in these patients may relate to the presence of an ongoing afferent nociceptive drive. SIGNIFICANCE: How pain-related resting state networks are affected by tonic cold-pain remains unknown. We investigated functional connectivity alterations during and following tonic cold pain in healthy volunteers. Cold pain perturbed the functional connectivity of the ventro-medial prefrontal cortex, anterior insula, and the periacquaductal grey area. These connectivity changes were associated with the magnitude of individuals' reported pain. We suggest that some connectivity changes described in chronic pain patients may be due to an ongoing afferent peripheral drive.
dc.description.sponsorshipThis work was funded by a Medical Research Council Experimental Medicine Challenge Grant (MR/N026969/1). MAH, SM, OO and SW are also supported by the NIHR Biomedical Research Centre for Mental Health at the South London and Maudsley NHS Trust. JOM is supported by a Sir Henry Dale Fellowship jointly funded by the Welcome Trust and the Royal Society (grant number 206675/Z/17/Z) and a Medical Research Council (MRC) Centre grant (MR/N026063/1).
dc.identifier.doi10.17863/CAM.78003
dc.identifier.eissn1532-2149
dc.identifier.issn1090-3801
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/330559
dc.languageeng
dc.language.isoeng
dc.publisherElsevier
dc.publisher.urlhttp://dx.doi.org/10.1002/ejp.1633
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBrain Mapping
dc.subjectChronic Pain
dc.subjectHumans
dc.subjectMagnetic Resonance Imaging
dc.subjectNeural Pathways
dc.subjectPrefrontal Cortex
dc.titleSustained perturbation in functional connectivity induced by cold pain.
dc.typeArticle
dcterms.dateAccepted2020-07-05
prism.endingPage1861
prism.issueIdentifier9
prism.publicationDate2020
prism.publicationNameEuropean Journal of Pain
prism.startingPage1850
prism.volume24
rioxxterms.licenseref.startdate2020-10
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1002/ejp.1633

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