title: Plasma concentration of organochlorine compounds is associated with age and not obesity.
abstract: It has been suggested that obese individuals, because of an increased dilution space (body fat) for lipophilic organochlorines compounds, may have greater levels of toxic pollutants than lean sedentary individuals. It is important to further examine this possibility because of the potential contribution of organochlorine pesticides in the development of Parkinson's disease and other neurological diseases. The aim of this study was to further investigate the relationship between the magnitude of obesity and the plasma concentration of organochlorines for a wide range of BMI (with participants at steady state body weight). Fifty-three individuals were selected on the basis of their body mass index (BMI): lean controls (n=16; mean BMI 22.8+/-2.2 kg/m(2); mean age 38.8+/-9.4 years), obese individuals (n=19; mean BMI 33.4+/-3.0 kg/m(2); mean age 38.6+/-7.6 years) and morbidly obese individuals (n=18; mean BMI 49.3+/-6.5 kg/m(2); mean age 44.3+/-9.2 years). Blood samples were analyzed for organochlorine compounds. The relationship between the total plasma organochlorine concentration and BMI was tested using a multiple regression analysis. Age was included in the model. There was no relationship between the total plasma organochlorine concentration and BMI. Organochlorine concentrations, however, were correlated with age (BMI-adjusted R(2)=0.46; p<0.001). At steady state body weight, toxic pollutant concentrations are not associated to obesity but strongly correlate with age.
authors.affiliation: Faculty of Medicine, Department of Social and Preventive Medicine, Division of kinesiology, PEPS, Laval University, QC, Canada G1K 7P4.
authors.forename: Olivier
authors.initials: O
authors.lastname: Hue
authors.forename: Julie
authors.initials: J
authors.lastname: Marcotte
authors.forename: Félix
authors.initials: F
authors.lastname: Berrigan
authors.forename: Martin
authors.initials: M
authors.lastname: Simoneau
authors.forename: Jean
authors.initials: J
authors.lastname: Doré
authors.forename: Picard
authors.initials: P
authors.lastname: Marceau
authors.forename: Simon
authors.initials: S
authors.lastname: Marceau
authors.forename: Angelo
authors.initials: A
authors.lastname: Tremblay
authors.forename: Normand
authors.initials: N
authors.lastname: Teasdale
mesh_terms: D000328:Adult; D000375:Aging / Q000097:blood*; D015992:Body Mass Index; D006801:Humans; D006843:Hydrocarbons, Chlorinated / Q000097:blood*; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000097:blood*; D010573:Pesticide Residues / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis
chemical_list: D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D011078:Polychlorinated Biphenyls