title: Relationship of serum resistin level to traits of metabolic syndrome and serum paraoxonase 1 activity in a population with a broad range of body mass index.
abstract: The relationship between resistin, one of the adipokines, and metabolic syndrome is not fully elucidated. Altered activity of the HDL-associated antioxidant enzyme paraoxonase 1 (PON1) that participates in the antioxidant defense mechanisms of HDL may have an important role in the obesity-related accelerated atherosclerosis. Inverse associations of PON1 with obesity and serum levels of leptin have been demonstrated. Our aim was to investigate the association of serum levels of resistin with (i) PON1 activity, and (ii) parameters of metabolic syndrome, including some that are additional for research. A total of 74 Caucasian subjects were recruited into the study and divided into 3 age and sex-matched groups. Group 1, 25 non-diabetic overweight/obese subjects with BMI of 28-39.9 kg/m (2); group 2, 25 non-diabetic obese patients with BMI >or=40 kg/m (2); and the control group 3, 24 healthy, normal-weight control subjects. Serum levels of resistin were correlated negatively with BMI (r=-0.27, P<0.05), waist circumference (r=-0.28, P<0.05), serum levels of leptin (r=-0.28, P<0.05), non-esterified fatty acids (NEFA) (r=-0.23, P<0.05), and HbA (1C) (r=-0.26, P<0.05), systolic BP (r=-0.28, P<0.05), and lipid peroxidation (measured by TBARS) (r=-0.40, P<0.01), and correlated positively with PON1 (r=0.24, P<0.05). No association was detected between the serum concentrations of resistin and the following investigated parameters: diastolic BP, levels of uric acid, glucose, insulin, or insulin resistance (measured by homeostasis model assessment, HOMA-IR), triglyceride, total cholesterol, LDL-C, and HDL-C. During multiple regression analyses BMI and TBARS were independent predictors of PON1, while age, gender, blood pressure, HOMA-IR, LDL-C, HDL-C, and resistin were not.
  
  
  CONCLUSIONS
  Among the study subjects, serum levels of resistin showed a positive, although not independent correlation with serum PON1, and a negative correlation with numerous parameters of the metabolic syndrome (i.e. adiposity, blood pressure, levels of leptin, free fatty acid, glycosylated hemoglobin, and lipid peroxidation). BMI and TBARS are independent predictors of PON1 activity.
authors.affiliation: 1st Department of Medicine, School of Medicine, University of Pécs, Pécs, Hungary. laszlo.bajnok@aok.pte.hu
authors.forename: L
authors.initials: L
authors.lastname: Bajnok
authors.forename: I
authors.initials: I
authors.lastname: Seres
authors.forename: Z
authors.initials: Z
authors.lastname: Varga
authors.forename: S
authors.initials: S
authors.lastname: Jeges
authors.forename: A
authors.initials: A
authors.lastname: Peti
authors.forename: Z
authors.initials: Z
authors.lastname: Karanyi
authors.forename: A
authors.initials: A
authors.lastname: Juhasz
authors.forename: E
authors.initials: E
authors.lastname: Csongradi
authors.forename: E
authors.initials: E
authors.lastname: Mezosi
authors.forename: E V
authors.initials: EV
authors.lastname: Nagy
authors.forename: G
authors.initials: G
authors.lastname: Paragh
mesh_terms: D000328:Adult; D043303:Aryldialkylphosphatase / Q000097:blood*; D001794:Blood Pressure; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005260:Female; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D007328:Insulin / Q000097:blood; D008055:Lipids / Q000097:blood; D008297:Male; D024821:Metabolic Syndrome / Q000097:blood / Q000201:enzymology / Q000503:physiopathology*; D008875:Middle Aged; D050177:Overweight / Q000097:blood / Q000201:enzymology / Q000503:physiopathology*; D012016:Reference Values; D052243:Resistin / Q000097:blood*; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism; D055815:Young Adult
chemical_list: D043303:Aryldialkylphosphatase; D005230:Fatty Acids, Nonesterified; D006442:Glycated Hemoglobin; D007328:Insulin; D008055:Lipids; D052243:Resistin; D017392:Thiobarbituric Acid Reactive Substances