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. 2020 May 22;6(5):e04041.
doi: 10.1016/j.heliyon.2020.e04041. eCollection 2020 May.

Urinary metabolomic signatures in reticular oral lichen planus

Xu-Yan Yang  1 , Xu-Zhao Li  2 , Shuai-Nan Zhang  2
Affiliations

Urinary metabolomic signatures in reticular oral lichen planus

Xu-Yan Yang et al. Heliyon. .

Abstract

Oral lichen planus (OLP) is a chronic inflammatory disease. Among all the clinical forms in OLP, reticular type has the highest incidence rate. Previous studies have applied metabolomics to investigate the metabolic changes of oral mucosa and blood samples from reticular OLP patients. Urinary metabolomic signatures is also useful in analyzing the pathological changes of the patients, which was a complement to the previous studies. Through these researches, we may have a more comprehensive understanding of the disease. Metabolic profiles of urinary samples from OLP patients and control subjects were analyzed by liquid chromatography (LC)-mass spectrometry (MS) system. Differentially expressed metabolites were identified via OSI/SMMS software for the pathology analysis. Totally, 30 differentially expressed metabolites were identified. Pathological network showed that these metabolites participated in 8 pathological processes, that is, DNA damage and repair disorder, apoptosis process, inflammatory lesion, oxidative stress injury, carbohydrate metabolism disorder, mood dysfunction, abnormal energy expenditure, and other pathological process. These findings demonstrated that the analysis of human urine metabolome might be conducive to the achievement of the objectives of this study.

Keywords: Biochemistry; Biomarkers; Diagnostics; Health technology; Immunology; Oral lichen planus; Oral medicine; Pathology; Reticular type; Urinary metabolomic signatures.

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Figures

Figure 1
Figure 1
(A and B) Clinical pictures and (C) histopathological image of reticular OLP patient. (A and B) White reticular striae were found on the surface of oral mucosa and tongue (indicated by an arrow). (C) Parakeratosis and numerous inflammatory cells were found in histopathological image (magnification×400). These are the characteristic features of reticular OLP. The images were published in our previous study [4].
Figure 2
Figure 2
PCA score plot based on the oral mucosal metabolic profiling of (CZ) control and (HZ) reticular OLP groups.
Figure 3
Figure 3
OPLS-DA score plot based on the oral mucosal metabolic profiling of (CZ) control and (HZ) reticular OLP groups.
Figure 4
Figure 4
Pathological network associated with reticular OLP. Blue nodes represent pathological processes, and green nodes represent metabolites.
See this image and copyright information in PMC

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