Please use this identifier to cite or link to this item: http://hdl.handle.net/1880/51120
Title: Reduced cortical microvascular oxygenation in multiple sclerosis: a blinded, case-controlled study using a novel quantitative near-infrared spectroscopy method
Authors: Yang, Runze
Dunn, Jeff F.
Keywords: multiple sclerosis;hypoxia;near-infrared spectroscopy;brain;imaging
Issue Date: 13-Nov-2015
Publisher: Nature Publishing Group
Citation: Yang, 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.
Series/Report no.: Scientific Reports;
Abstract: Hypoxia (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.
URI: http://hdl.handle.net/1880/51120
ISSN: 2045-2322
Appears in Collections:Dunn, Jeffrey F.

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