a Edirne State Hospital

Turkey

a Edirne State Hospital

Turkey
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PubMed | Harran University, University of Gaziantep and a Edirne State Hospital
Type: Journal Article | Journal: Redox report : communications in free radical research | Year: 2016

The aim of this study was to evaluate serum paraoxonase-1 (PON1) activity and its association with oxidative stress in autoimmune thyroid disease (AITD).A total of 50 patients with AITD, including 25 with Hashimotos thyroiditis and 25 with Graves disease were enrolled. The control group comprised 27 healthy subjects. Blood samples were obtained in the euthyroid period and 3 months after initiation of medical treatment. Serum samples from patients with AITD and the healthy control group were analyzed for basal PON1, salt-stimulated PON1, and arylesterase (ARE) activities, along with lipid hydroperoxide (LOOH) and total free sulfhydryl (-SH) levels.Serum PON1 activities and -SH levels were significantly lower (P<0.001, for each), whereas LOOH levels were significantly higher (P<0.001, for each) in patients with AITD, compared to the control group. We observed no significant differences in ARE levels between the patient and healthy control groups (P>0.05). PON1 activity was positively correlated with -SH (r=0.522, P<0.001) and negatively correlated with LOOH (r=-0.487, P<0.001). PON1 phenotype distribution of the subjects was not significantly different among the three groups (P=0.961).Serum PON1 activity is decreased in patients with AITD, and correlated positively with -SH, a well-known antioxidant, and negatively with LOOH, an index of lipid oxidation.

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