BACKGROUND: Persistent organic pollutants (POPs) are lipophilic chemicals that bioaccumulate. Most of them were resticted or banned in the 1970s and 1980s to protect human health and the environment. The main source for humans is dietary intake of dairy products, meat and fish. Little data exist on changes of the concentration of POPs in the Swedish population over time. OBJECTIVE: To study if the concentrations of polychlorinated biphenyls (PCBs), DDE, hexachlorobenzene (HCB) and chlordanes have changed in the Swedish population during 1993-2007, and certain factors that may influence the concentrations. METHODS: During 1993-2007 samples from 537 controls in different human cancer studies were collected and analysed. Background information such as body mass index, breast-feeding and parity was assessed by questionaires. Wilcoxon rank-sum test was used to analyse the explanatory factors specimen (blood or adipose tissue), gender, BMI, total breast-feeding and parity in relation to POPs. Time trends for POPs were analysed using linear regression analysis, adjusted for specimen, gender, BMI and age. RESULTS: The concentration decreased for all POPs during 1993-2007. The annual change was statistically significant for the sum of PCBs -7.2%, HCB -8.8%, DDE -13.5% and the sum of chlordanes -10.3%. BMI and age were determinants of the concentrations. Cumulative breast-feeding >8 months gave statistically significantly lower concentrations for the sum of PCBs, DDE and the sum of chlordanes. Parity with >2 children yielded statistically significantly lower sum of PCBs. CONCLUSIONS: All the studied POPs decreased during the time period, probably due to restrictions of their use. Copyright 2010 Elsevier B.V. All rights reserved.
BACKGROUND: Persistent organic pollutants (POPs) are lipophilic chemicals that bioaccumulate. Most of them were resticted or banned in the 1970s and 1980s to protect human health and the environment. The main source for humans is dietary intake of dairy products, meat and fish. Little data exist on changes of the concentration of POPs in the Swedish population over time. OBJECTIVE: To study if the concentrations of polychlorinated biphenyls (PCBs), DDE, hexachlorobenzene (HCB) and chlordanes have changed in the Swedish population during 1993-2007, and certain factors that may influence the concentrations. METHODS: During 1993-2007 samples from 537 controls in different humancancer studies were collected and analysed. Background information such as body mass index, breast-feeding and parity was assessed by questionaires. Wilcoxon rank-sum test was used to analyse the explanatory factors specimen (blood or adipose tissue), gender, BMI, total breast-feeding and parity in relation to POPs. Time trends for POPs were analysed using linear regression analysis, adjusted for specimen, gender, BMI and age. RESULTS: The concentration decreased for all POPs during 1993-2007. The annual change was statistically significant for the sum of PCBs -7.2%, HCB -8.8%, DDE -13.5% and the sum of chlordanes -10.3%. BMI and age were determinants of the concentrations. Cumulative breast-feeding >8 months gave statistically significantly lower concentrations for the sum of PCBs, DDE and the sum of chlordanes. Parity with >2 children yielded statistically significantly lower sum of PCBs. CONCLUSIONS: All the studied POPs decreased during the time period, probably due to restrictions of their use. Copyright 2010 Elsevier B.V. All rights reserved.
Authors: Amelia K Wesselink; Traci N Bethea; Michael McClean; Jennifer Weuve; Paige L Williams; Russ Hauser; Andreas Sjödin; Theodore M Brasky; Donna D Baird; Lauren A Wise Journal: Int J Hyg Environ Health Date: 2019-07-05 Impact factor: 5.840
Authors: Douglas I Walker; M Elizabeth Marder; Yukiko Yano; Metrecia Terrell; Yongliang Liang; Dana Boyd Barr; Gary W Miller; Dean P Jones; Michele Marcus; Kurt D Pennell Journal: Environ Res Date: 2019-02-13 Impact factor: 6.498
Authors: Kinga Lancz; Irva Hertz-Picciotto; Todd A Jusko; Lubica Murínová; Soňa Wimmerová; Eva Sovčíková; Ladislav Dedík; Maximilián Strémy; Beata Drobná; Dana Farkašová; Tomáš Trnovec Journal: Environ Res Date: 2014-11-20 Impact factor: 6.498
Authors: Todd P Whitehead; Sabrina Crispo Smith; June-Soo Park; Myrto X Petreas; Stephen M Rappaport; Catherine Metayer Journal: Environ Res Date: 2014-11-20 Impact factor: 6.498