TY - JOUR
T1 - Polychlorinated biphenyls and organochlorine pesticides in plasma of older Canadians
AU - Medehouenou, Thierry Comlan Marc
AU - Ayotte, Pierre
AU - Carmichael, Pierre Hugues
AU - Kröger, Edeltraut
AU - Verreault, René
AU - Lindsay, Joan
AU - Dewailly, Éric
AU - Tyas, Suzanne L.
AU - Bureau, Alexandre
AU - Laurin, Danielle
N1 - Funding Information:
This study was possible by grants from the Canadian Institutes of Health Research (CIHR). Th. C. M. Medehouenou is supported by the Alzheimer Society of Canada (ASC) and the Canadian Dementia Knowledge Translation Network (CDKTN). A. Bureau and D. Laurin are supported by scientist awards from the Fonds de la Recherche en Santé du Québec (FRSQ). The authors declare that they have no competing interests.
PY - 2011/11
Y1 - 2011/11
N2 - No nationwide study has ever measured polychlorinated biphenyl (PCB) and organochlorine pesticide (OCP) body burden in Canadians aged 65 years and over. The objective of this study was to determine plasma concentrations of PCB congeners and OCPs in participants from a sub-cohort of the Canadian Study of Health and Aging and to examine the effects of socio-demographic, anthropometric and lifestyle characteristics on selected organochlorine concentrations. Archived plasma samples collected from 2023 subjects were analyzed by gas chromatography-mass spectrometry using negative chemical ionization for 15 PCB congeners and 11 OCPs. Descriptive statistics were used to report PCB congeners and OCP plasma concentrations. Multivariate models were used to study whether age at blood collection, sex, education, body mass index, rural residence, geographic region, smoking status and alcohol intake influences PCB 153, the most abundant congener, and the major OCP (beta-hexachlorocyclohexane, hexachlorobenzene, trans-nonachlor, p,p'-DDE) plasma concentrations. Statistical analyses were restricted to 1979 subjects and 17 organochlorine compounds for which at least 50% of the samples had concentrations above the limit of detection. Of these, 775 were men (mean age: 82.2 years) and 1204 were women (mean age: 84.6 years). The median concentrations (ng/g lipid) of PCB 153 in the plasma of men and women were 70.9 and 75.4, respectively. The levels of the sum of PCBs and the sum of dioxin-like PCBs were 276 and 31.3 for men, and 300 and 45.5 for women, respectively. The median concentrations (ng/g lipid) of p,p'-DDE, the most abundant OCP, were 565 for men and 828 for women. All compounds were positively and significantly intercorrelated (r s=0.39-0.99; p<0.001). Except for trans-nonachlor, the multivariate models revealed that age and male sex were the determining characteristics that showed, respectively, strongly positive and negative associations with selected organochlorine concentrations. These plasma concentrations from a large population based study can be considered as baseline data for body burdens of older Canadians.
AB - No nationwide study has ever measured polychlorinated biphenyl (PCB) and organochlorine pesticide (OCP) body burden in Canadians aged 65 years and over. The objective of this study was to determine plasma concentrations of PCB congeners and OCPs in participants from a sub-cohort of the Canadian Study of Health and Aging and to examine the effects of socio-demographic, anthropometric and lifestyle characteristics on selected organochlorine concentrations. Archived plasma samples collected from 2023 subjects were analyzed by gas chromatography-mass spectrometry using negative chemical ionization for 15 PCB congeners and 11 OCPs. Descriptive statistics were used to report PCB congeners and OCP plasma concentrations. Multivariate models were used to study whether age at blood collection, sex, education, body mass index, rural residence, geographic region, smoking status and alcohol intake influences PCB 153, the most abundant congener, and the major OCP (beta-hexachlorocyclohexane, hexachlorobenzene, trans-nonachlor, p,p'-DDE) plasma concentrations. Statistical analyses were restricted to 1979 subjects and 17 organochlorine compounds for which at least 50% of the samples had concentrations above the limit of detection. Of these, 775 were men (mean age: 82.2 years) and 1204 were women (mean age: 84.6 years). The median concentrations (ng/g lipid) of PCB 153 in the plasma of men and women were 70.9 and 75.4, respectively. The levels of the sum of PCBs and the sum of dioxin-like PCBs were 276 and 31.3 for men, and 300 and 45.5 for women, respectively. The median concentrations (ng/g lipid) of p,p'-DDE, the most abundant OCP, were 565 for men and 828 for women. All compounds were positively and significantly intercorrelated (r s=0.39-0.99; p<0.001). Except for trans-nonachlor, the multivariate models revealed that age and male sex were the determining characteristics that showed, respectively, strongly positive and negative associations with selected organochlorine concentrations. These plasma concentrations from a large population based study can be considered as baseline data for body burdens of older Canadians.
KW - Body burdens
KW - Organochlorine compounds
KW - Organochlorine pesticides
KW - Polychlorinated biphenyls
UR - http://www.scopus.com/inward/record.url?scp=80755169832&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80755169832&partnerID=8YFLogxK
U2 - 10.1016/j.envres.2011.09.017
DO - 10.1016/j.envres.2011.09.017
M3 - Article
C2 - 22001220
AN - SCOPUS:80755169832
SN - 0013-9351
VL - 111
SP - 1313
EP - 1320
JO - Environmental research
JF - Environmental research
IS - 8
ER -