Reduced cortical microvascular oxygenation in multiple sclerosis: a blinded, case-controlled study using a novel quantitative near-infrared spectroscopy method

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dc.contributor.authorYang, Runze
dc.contributor.authorDunn, Jeff F.
dc.date.accessioned2016-03-23T17:30:56Z
dc.date.available2016-03-23T17:30:56Z
dc.date.issued2015-11-13
dc.description.abstractHypoxia (low oxygen) is associated with many brain disorders as well as inflammation, but the lack of widely available technology has limited our ability to study hypoxia in human brain. Multiple sclerosis (MS) is a poorly understood neurological disease with a significant inflammatory component which may cause hypoxia. We hypothesized that if hypoxia were to occur, there should be reduced microvascular hemoglobin saturation (StO2). In this study, we aimed to determine if reduced StO2 can be detected in MS using frequency domain near-infrared spectroscopy (fdNIRS). We measured fdNIRS data in cortex and assessed disability of 3 clinical isolated syndrome (CIS), 72 MS patients and 12 controls. Control StO2 was 63.5 ± 3% (mean ± SD). In MS patients, 42% of StO2 values were more than 2 × SD lower than the control mean. There was a significant relationship between StO2 and clinical disability. A reduced microvascular StO2 is supportive (although not conclusive) that there may be hypoxic regions in MS brain. This is the first study showing how quantitative NIRS can be used to detect reduced StO2 in patients with MS, opening the door to understanding how microvascular oxygenation impacts neurological conditions.en_US
dc.description.grantingagencyNatural Sciences and Engineering Research Council of Canada; Alberta Innovates Health Solutionsen_US
dc.description.refereedYesen_US
dc.identifier.citationYang, R. and J. F. Dunn. (2015). Reduced cortical microvascular oxygenation in multiple sclerosis: a blinded, case-controlled study using a novel quantitative near-infrared spectroscopy method. Sci Rep. 5:16477.en_US
dc.identifier.doi10.1038/srep16477
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/33532
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/1880/51120
dc.language.isoenen_US
dc.publisherNature Publishing Groupen_US
dc.publisher.departmentRadiologyen_US
dc.publisher.facultyMedicineen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.publisher.urlhttp://www.nature.com/index.htmlen_US
dc.relation.ispartofseriesScientific Reports;
dc.subjectmultiple sclerosisen_US
dc.subjecthypoxiaen_US
dc.subjectnear-infrared spectroscopyen_US
dc.subjectbrainen_US
dc.subjectimagingen_US
dc.titleReduced cortical microvascular oxygenation in multiple sclerosis: a blinded, case-controlled study using a novel quantitative near-infrared spectroscopy methoden_US
dc.typejournal article
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