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    Determination of serum perfluorooctanoic acid and perfluorooctanesulfonic acid levels with different stages of chronic kidney disease
    (Wolters Kluwer Medknow Publications, 2021) Erdal, Hüseyin; Sungur, Sana; Köroğlu, Muaz; Turgut, Faruk
    The aim of this study is to investigate the perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) levels in patients with different stages of chronic kidney disease (CKD). Sixty-one CKD stage 1-4 patients who applied to the nephrology outpatient clinic were recruited. A control group consisting of 26 age- and sex-matched healthy controls were also included in the study. Concentrations of PFOA and PFOS were determined by comparing their peak areas with their standard curves. All samples were analyzed three times. The average values of blank samples were subtracted from the detected PFOA and PFOS values. PFOA and PFOS levels were significantly higher in CKD group than the controls (11.4 ± 7.47, 0.45 ± 0.55; 0.13 ± 0. 17, 0.19 ± 0.4 ng/mL, respectively) (P = 0.001). Hemoglobin, serum albumin, and estimated glomerular filtration rate (eGFR) levels were significantly lower and potassium and uric acid levels were higher in the CKD group than the controls. PFOA and PFOS levels were significantly higher in all stages of CKD patients than healthy controls. However, there was no correlation between eGFR, and PFOS and PFOA. We have demonstrated significantly increased PFOA and PFOS concentrations in different stages of CKD patients. We could not find an association between eGFR, age, and serum PFOS and PFOA concentrations.