Lars Lind1, Samira Salihovic2, Erik Lampa3, P Monica Lind4. 1. Department of Medical Sciences, Cardiovascular Epidemiology, Uppsala University, Uppsala, Sweden. Electronic address: lars.lind@medsci.uu.se. 2. Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden. Electronic address: samira.salihovic@medsci.uu.se. 3. Uppsala Clinical Research Center (UCR), Uppsala, Sweden. Electronic address: erik.lampa@ucr.uu.se. 4. Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University Uppsala, Sweden. Electronic address: monica.lind@medsci.uu.se.
Abstract
BACKGROUND: Several cross-sectional studies have linked different environmental contaminants to the metabolic syndrome (MetS). However, mixture effects have not been investigated and no prospective studies exist regarding environmental contaminants and the MetS. OBJECTIVES: To study mixture effects of contaminants on the risk of incident MetS in a prospective fashion. METHODS: Our sample consisted of 452 subjects from the Prospective Study of the Vasculature in Uppsala Seniors (PIVUS) study (50% women, all aged 70years) free from the MetS at baseline, being followed for 10years. At baseline, 30 different environmental contaminants were measured; 6 polychlorinated biphenyls (PCBs), 3 organochlorine (OC) pesticides, one dioxin, one polybrominated diphenyl ether (all in plasma), 8 perfluoroalkyl substances (in plasma) and 11 metals (in whole blood). The MetS was defined by the ATPIII/NCEP criteria. Gradient boosted Classification and Regression Trees (CARTs) was used to evaluate potential synergistic and additive mixture effects on incident MetS. RESULTS: During 10-year follow-up, 92 incident cases of the MetS occurred. PCB126, PCB170, hexachlorobenzene (HCB) and PCB118 levels were all associated with incident MetS in an additive fashion (OR 1.73 for a change from 10th to 90th percentile (95%CI 1.24-3.04) for PCB126, OR 0.63 (0.42-0.78) for PCB170, OR 1.44 (1.09-2.20) for HCB and OR 1.46 (1.13-2.43) for PCB118). No synergistic effects were found. CONCLUSION: A mixture of environmental contaminants, with PCB126, PCB170, HCB and PCB118 being the most important, showed associations with future development of the MetS in an additive fashion in this prospective study. Thus, mixture effects of environmental contaminants could contribute to the development of cardio-metabolic derangements.
BACKGROUND: Several cross-sectional studies have linked different environmental contaminants to the metabolic syndrome (MetS). However, mixture effects have not been investigated and no prospective studies exist regarding environmental contaminants and the MetS. OBJECTIVES: To study mixture effects of contaminants on the risk of incident MetS in a prospective fashion. METHODS: Our sample consisted of 452 subjects from the Prospective Study of the Vasculature in Uppsala Seniors (PIVUS) study (50% women, all aged 70years) free from the MetS at baseline, being followed for 10years. At baseline, 30 different environmental contaminants were measured; 6 polychlorinated biphenyls (PCBs), 3 organochlorine (OC) pesticides, one dioxin, one polybrominated diphenyl ether (all in plasma), 8 perfluoroalkyl substances (in plasma) and 11 metals (in whole blood). The MetS was defined by the ATPIII/NCEP criteria. Gradient boosted Classification and Regression Trees (CARTs) was used to evaluate potential synergistic and additive mixture effects on incident MetS. RESULTS: During 10-year follow-up, 92 incident cases of the MetS occurred. PCB126, PCB170, hexachlorobenzene (HCB) and PCB118 levels were all associated with incident MetS in an additive fashion (OR 1.73 for a change from 10th to 90th percentile (95%CI 1.24-3.04) for PCB126, OR 0.63 (0.42-0.78) for PCB170, OR 1.44 (1.09-2.20) for HCB and OR 1.46 (1.13-2.43) for PCB118). No synergistic effects were found. CONCLUSION: A mixture of environmental contaminants, with PCB126, PCB170, HCB and PCB118 being the most important, showed associations with future development of the MetS in an additive fashion in this prospective study. Thus, mixture effects of environmental contaminants could contribute to the development of cardio-metabolic derangements.
Authors: Jerrold J Heindel; Sarah Howard; Keren Agay-Shay; Juan P Arrebola; Karine Audouze; Patrick J Babin; Robert Barouki; Amita Bansal; Etienne Blanc; Matthew C Cave; Saurabh Chatterjee; Nicolas Chevalier; Mahua Choudhury; David Collier; Lisa Connolly; Xavier Coumoul; Gabriella Garruti; Michael Gilbertson; Lori A Hoepner; Alison C Holloway; George Howell; Christopher D Kassotis; Mathew K Kay; Min Ji Kim; Dominique Lagadic-Gossmann; Sophie Langouet; Antoine Legrand; Zhuorui Li; Helene Le Mentec; Lars Lind; P Monica Lind; Robert H Lustig; Corinne Martin-Chouly; Vesna Munic Kos; Normand Podechard; Troy A Roepke; Robert M Sargis; Anne Starling; Craig R Tomlinson; Charbel Touma; Jan Vondracek; Frederick Vom Saal; Bruce Blumberg Journal: Biochem Pharmacol Date: 2022-04-05 Impact factor: 6.100