Non-diabetic metabolic syndrome and obesity do not affect serum paraoxonase and arylesterase activities but do affect oxidative stress and inflammation.
OBJECTIVE
Paraoxonase-1 (PON-1), which has PON and arylesterase activities, is a high-density lipoprotein (HDL)-bound antioxidant enzyme that inhibits atherosclerosis. Diabetes has been shown to have an impact on oxidative stress. The effect of metabolic syndrome (MetS) on oxidative stress and PON-1 has been shown before, and PON-1 has been found to be related with accelerated atherogenesis. This study aimed to determine the oxidative state and PON and arylesterase activities in non-diabetic MetS and non-MetS obese patients.


METHODS
Thirty obese patients (3 M and 27 F) without MetS, 40 non-diabetic obese patients (3 M and 37 F) with MetS, and 30 controls (2 M and 28 F) were enrolled.


METHODS
A 75 g glucose tolerance test was performed. PON-1, PON, arylesterase, total antioxidant status (TAS), high-sensitive C-reactive protein (hsCRP), and metabolic parameters were analyzed.


RESULTS
PON and arylesterase activities were similar between the groups, while TAS was low in both MetS and obese groups compared to controls (P<0.01 and P<0.05 respectively). CRP was higher in the MetS group compared with the obese and control groups (P<0.01 and P<0.001 respectively). In both the obese and MetS groups, CRP showed a positive correlation with body mass index (BMI). TAS was negatively correlated with BMI, waist circumference, triglyceride levels, and systolic and diastolic blood pressures (P<0.001).


CONCLUSIONS
Oxidative stress is altered in non-diabetic MetS and non-MetS obese patients, but PON and arylesterase activities seem not to be affected. This result may be due to the absence of diabetes, the most severe form of altered carbohydrate metabolism.
Tabur
Suzan
S
Department of Endocrinology and Metabolic Diseases, Harran University School of Medicine, 63300 Sanliurfa, Turkey.
Torun
Ayse Nur
AN
Sabuncu
Tevfik
T
Turan
Mehmet Nuri
MN
Celik
Hakim
H
Ocak
Ali Riza
AR
Aksoy
Nurten
N
D000328:Adult; D000704:Analysis of Variance; D000975:Antioxidants / Q000378:metabolism; D043303:Aryldialkylphosphatase / Q000097:blood*; D001786:Blood Glucose / Q000378:metabolism; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D002265:Carboxylic Ester Hydrolases / Q000097:blood*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D007249:Inflammation / Q000378:metabolism*; D008055:Lipids / Q000097:blood; D008297:Male; D024821:Metabolic Syndrome / Q000378:metabolism*; D009765:Obesity / Q000378:metabolism*; D018384:Oxidative Stress / Q000502:physiology*; D012044:Regression Analysis; D055105:Waist Circumference
D000975:Antioxidants; D001786:Blood Glucose; D008055:Lipids; D002265:Carboxylic Ester Hydrolases; C019734:arylesterase; D043303:Aryldialkylphosphatase