title: A comparative study of the oxidative profile in Graves' disease, Hashimoto's thyroiditis, and papillary thyroid cancer.
abstract: The aim of this study was to evaluate and compare the oxidative profiles of three thyroid disorders: Graves' disease (GD), Hashimoto thyroiditis (HT), and papillary thyroid cancer (PTC). Malondialdehyde levels (MDA), glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) activities were examined in the plasma of 52 patients (29 untreated HT, 16 untreated GD, and 7 PTC who underwent surgical therapy). Results were compared with those of 30 healthy controls and among the three groups of patients. The GD, HT, and PTC patients exhibited increased plasma MDA levels and SOD activities compared with the controls (p < 0.05, p < 0.05, and p < 0.001, respectively). CAT activities significantly increased only for the PTC and HT patients (p < 0.001 and p < 0.05, respectively), whereas GPx activities significantly decreased only in the GD and PTC (p < 0.05 and p < 0.01, respectively). The comparison among the three groups of patients has shown increased MDA level and SOD activity for the PTC patients as compared to the GD patients (p < 0.01 and p < 0.001, respectively). Compared with HT, PTC patients exhibited significant higher MDA level, SOD, and CAT activities and a significant lower GPx activity (p < 0.01, p < 0.001, p < 0.05, and p < 0.05, respectively). No significant discrepancies were noted between the GD and HT patients. Our results have clearly shown an oxidative profile that is highly disturbed for the PTC patients as compared to those of autoimmune disorders. Future studies are needed to determine whether or not the oxidative stress has a prognostic value in this pathology.
authors.affiliation: Unité de Biotechnologie et Pathologies, Institut Supérieur de Biotechnologie de Sfax, route de Soukra km4, B.P.261, 3038 Sfax, Tunisia. saloualassoued@yahoo.fr
authors.forename: Saloua
authors.initials: S
authors.lastname: Lassoued
authors.forename: Malek
authors.initials: M
authors.lastname: Mseddi
authors.forename: Fatma
authors.initials: F
authors.lastname: Mnif
authors.forename: Mohamed
authors.initials: M
authors.lastname: Abid
authors.forename: Fadhel
authors.initials: F
authors.lastname: Guermazi
authors.forename: Hatem
authors.initials: H
authors.lastname: Masmoudi
authors.forename: Abdelfatteh
authors.initials: A
authors.lastname: El Feki
authors.forename: Hamadi
authors.initials: H
authors.lastname: Attia
mesh_terms: D000328:Adult; D002277:Carcinoma; D002291:Carcinoma, Papillary; D002374:Catalase / Q000378:metabolism; D005260:Female; D005979:Glutathione Peroxidase / Q000378:metabolism; D006111:Graves Disease / Q000378:metabolism*; D050031:Hashimoto Disease / Q000378:metabolism*; D006801:Humans; D015227:Lipid Peroxidation / Q000502:physiology; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D008875:Middle Aged; D018384:Oxidative Stress / Q000502:physiology; D013482:Superoxide Dismutase / Q000378:metabolism; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000378:metabolism; D055815:Young Adult
chemical_list: D008315:Malondialdehyde; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase