Review of measurements and imaging of cytochrome-c-oxidase in humans using near-infrared spectroscopy: an update

Author:

Leadley Georgina1,Austin Topun,Bale Gemma2

Affiliation:

1. Department of Medical Physics and Biomedical Engineering

2. University of Cambridge

Abstract

This review examines advancements in the measurement and imaging of oxidized cytochrome-c-oxidase (oxCCO) using near-infrared spectroscopy (NIRS) in humans since 2016. A total of 34 published papers were identified, with a focus on both adult and neonate populations. The NIRS-derived oxCCO signal has been demonstrated to correlate with physiological parameters and hemodynamics. New instrumentation, such as systems that allow the imaging of changes of oxCCO with diffuse optical tomography or combine the oxCCO measurement with diffuse correlation spectroscopy measures of blood flow, have advanced the field in the past decade. However, variability in its response across different populations and paradigms and lack of standardization limit its potential as a reliable and valuable indicator of brain health. Future studies should address these issues to fulfill the vision of oxCCO as a clinical biomarker.

Funder

NIHR Brain Injury MedTech Co-operative

NIHR Cambridge Biomedical Research Centre

Gianna Angelopoulos Programme for Science Technology and Innovation

Engineering and Physical Sciences Research Council

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Biotechnology

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