Saudi Journal of Gastroenterology
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ORIGINAL ARTICLE
Year : 2014  |  Volume : 20  |  Issue : 1  |  Page : 66-73

Evaluation of paraoxonase, malondialdehyde, and lipoprotein levels in patients with asymptomatic cholelithiasis


1 Department of Internal Medicine, Division of Gastroenterology, Republic of Turkey, Ministry of Health Haydarpaşa Numune Training and Research Hospital, Istanbul, Turkey
2 Department of Clinical Biochemistry, Dicle University Medical Faculty, Diyarbakır, Turkey

Correspondence Address:
Aytac Atamer
Division of Gastroenterology, Department of Internal Medicine, Republic of Turkey, Ministry of Health Haydarpaşa Numune Training and Research Hospital, Tıbbiye Caddesi No: 40, Üsküdar, 34668, Istanbul
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1319-3767.126325

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Background/Aim: To compare lipoprotein and malondialdehyde levels and paraoxonase-1 activity between subjects with asymptomatic cholelithiasis and controls. Patients and Methods: Eighty subjects with asymptomatic cholelithiasis (55 women, 25 men, mean age: 51, SD 14 years) and 40 control subjects without cholelithiasis (25 women, 25 men, mean age: 51, SD 12 years) were enrolled to the study. Serum paraoxonase activity, lipoproteins, and malondialdehyde were measured. Results: In the cholelithiasis group, serum total cholesterol, low-density lipoprotein cholesterol, and malondialdehyde were significantly higher and high-density lipoprotein cholesterol (HDL-C) and paraoxonase-1 were significantly lower than the controls. In cholelithiasis patients with serum glucose level > 100 mg/dL, body mass index, serum total cholesterol, triglyceride (TG), and malondialdehyde levels were significantly higher than cholelithiasis patients with serum glucose level < 100 mg/dL. Paraoxonase-1 activity was significantly lower in patients with serum glucose level > 100 mg/dL. In cholelithiasis patients with TG > 150 mg/dL, mean age, body mass index, glucose, total cholesterol, and malondialdehyde were significantly higher than in cholelithiasis patients with TG < 150 mg/dL. In cholelithiasis subgroup with TG > 150 mg/dL, HDL-C level and paraoxonase-1 activity were lower than in the cholelithiasis subgroup with TG < 150 mg/dL. All of the above comparisons were statistically significant (P < 0.05). Conclusions: Patients with asymptomatic cholelithiasis have evidence of increased lipid peroxidation and decreased antioxidant capacity. Patients with asymptomatic cholelithiasis with components of the metabolic syndrome have more lipid peroxidation and less antioxidant capacity than patients with asymptomatic cholelithiasis but without the components of the metabolic syndrome.


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