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ORIGINAL ARTICLE
Year : 2018  |  Volume : 14  |  Issue : 2  |  Page : 428-431

Evaluation of serum levels of oxidized and reduced glutathione and total antioxidant capacity in patients with head and neck squamous cell carcinoma


1 Department of Oral Medicine, School of Dentistry, Oral and Maxillofacial Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2 Department of Clinical Biochemistry, Faculty of Medicine, Surgical Oncology Research Center, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
3 Faculty of Medicine, Solid Tumor Treatment Research Center, Omid Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
4 Department of Oral Medicine, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran

Correspondence Address:
Dr. Atekeh Movaghari Pour
Department of Oral Medicine, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1482.189229

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Background and Aim: Squamous cell carcinoma (SCC) is the most common type of oral cancer, and it is important for it to be diagnosed in early stages. Researchers are interested in exploring the possibility of using biomarkers in the diagnosis of SCC in early stages. One of the detectable biomarkers in the serum is glutathione. Glutathione includes two forms: reduced form (or GSH) and oxidized form (or GSSG). The GSH/GSSG ratio tends to decrease in severe oxidative stress. The aim of this study was to assess the serum levels of GSH and GSSG as well as GSH/GSSG as total antioxidant capacity in patients with head and neck SCC (HNSCC) and to subsequently compare them with healthy controls. Materials and Methods: Twenty HNSCC patients as well as twenty healthy controls were included in the study. A blood sample of 5 ml was obtained from both the case and control groups. GSH, GSSG, and total antioxidant capacity were measured spectrophotometrically. Results: No significant difference in the level of GSSG was observed in the patients from the case and control groups (P = 0.796), whereas the level of GSH and GSH/GSSG was significantly lower in the case group (P = 0.002, P = 0.011, respectively). There was no significant relationship between the level of GSH, GSSG, and total antioxidant capacity, on the one hand, and the stage and grade of the tumor, on the other hand. Conclusion: Since the levels of GSH and GSH/GSSG were significantly lower in the case group, GSH/GSSG could be used as a prognostic factor for the early diagnosis of HNSCC.


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