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01.06.2014 | Basic Science | Ausgabe 6/2014

Graefe's Archive for Clinical and Experimental Ophthalmology 6/2014

Plasma metabonomics study of the patients with acute anterior uveitis based on ultra-performance liquid chromatography–mass spectrometry

Zeitschrift:
Graefe's Archive for Clinical and Experimental Ophthalmology > Ausgabe 6/2014
Autoren:
Junguo Guo, Tingqin Yan, Hongsheng Bi, Xiaofeng Xie, Xingrong Wang, Dadong Guo, Haiqiang Jiang

Abstract

Background

The identification of the biomarkers of patients with acute anterior uveitis (AAU) may allow for a less invasive and more accurate diagnosis, as well as serving as a predictor in AAU progression and treatment response. The aim of this study was to identify the potential biomarkers and the metabolic pathways from plasma in patients with AAU.

Methods

Both plasma metabolic biomarkers and metabolic pathways in the AAU patients versus healthy volunteers were investigated using ultra-performance liquid chromatography–mass spectrometry (UPLC–MS) and a metabonomics approach. The principal component analysis (PCA) was used to separate AAU patients from healthy volunteers as well as to identify the different biomarkers between the two groups. Metabolic compounds were matched to the KEGG, METLIN, and HMDB databases, and metabolic pathways associated with AAU were identified.

Results

The PCA for UPLC–MS data shows that the metabolites in AAU patients were significantly different from those of healthy volunteers. Of the 4,396 total features detected by UPLC–MS, 102 features were significantly different between AAU patients and healthy volunteers according to the variable importance plot (VIP) values (greater than two) of partial least squares discriminate analysis (PLS-DA). Thirty-three metabolic compounds were identified and were considered as potential biomarkers. Meanwhile, ten metabolic pathways were found that were related to the AAU according to the identified biomarkers.

Conclusions

These data suggest that metabolomics study can identify potential metabolites that differ between AAU patients and healthy volunteers. Based on the PCA, PLS-DA, several potential metabolic biomarkers and pathways in AAU patients were found and identified. In addition, the UPLC–MS technique combined with metabonomics could be a suitable systematic biology tool in research in clinical problems in ophthalmology, and can provide further insight into the pathophysiology of AAU.

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Literatur
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