Spatial mapping of proteoglycan content in articular cartilage using near-infrared (NIR) spectroscopy

Afara, Isaac O., Moody, Hayley, Singh, Sanjleena, Prasadam, Indira, & Oloyede, Adekunle (2015) Spatial mapping of proteoglycan content in articular cartilage using near-infrared (NIR) spectroscopy. Biomedical Optics Express, 6(1), pp. 144-154.

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Diagnosis of articular cartilage pathology in the early disease stages using current clinical diagnostic imaging modalities is challenging, particularly because there is often no visible change in the tissue surface and matrix content, such as proteoglycans (PG). In this study, we propose the use of near infrared (NIR) spectroscopy to spatially map PG content in articular cartilage. The relationship between NIR spectra and reference data (PG content) obtained from histology of normal and artificially induced PG-depleted cartilage samples was investigated using principal component (PC) and partial least squares (PLS) regression analyses. Significant correlation was obtained between both data (R2 = 91.40%, p<0.0001). The resulting correlation was used to predict PG content from spectra acquired from whole joint sample, this was then employed to spatially map this component of cartilage across the intact sample. We conclude that NIR spectroscopy is a feasible tool for evaluating cartilage contents and mapping their distribution across mammalian joint

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3 citations in Web of Science®

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ID Code: 80297
Item Type: Journal Article
Refereed: Yes
Additional Information: Published: December 15, 2014
Keywords: Spectroscopy, tissue diagnostics, Tissue characterization, Medical and biological imaging
DOI: 10.1364/BOE.6.000144
ISSN: 2156-7085
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Optical Society of America
Deposited On: 19 Jan 2015 23:20
Last Modified: 22 Jan 2015 00:10

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