PMID- 37150618 OWN - NLM STAT- MEDLINE DCOM- 20230509 LR - 20230519 IS - 1347-4715 (Electronic) IS - 1342-078X (Print) IS - 1342-078X (Linking) VI - 28 DP - 2023 TI - Chlorinated persistent organic pollutants in human breast milk in the Miyagi Prefecture disaster-affected area 1 year after the Great East Japan Earthquake of 2011. PG - 27 LID - 10.1265/ehpm.22-00260 [doi] LID - 27 AB - BACKGROUND: In the Great East Japan Earthquake of 11 March 2011, an earthquake and accompanying tsunami struck the Tohoku region of northeastern Japan. Buildings collapsed and the tsunami spread waste, including hazardous materials. This study aimed to determine the concentrations of persistent organic pollutants (POPs) in the breast milk of mothers living in the disaster-affected area of Sendai 1 year after the earthquake. Temporal trends in the POPs concentrations were evaluated by comparison with previous studies. METHODS: One hundred breast milk samples were obtained from lactating mothers at a hospital in Sendai in 2012. The results were compared with those from other years to examine whether there were changes in the POPs concentrations after the earthquake. We measured polychlorinated biphenyls (PCBs) and organochlorine pesticides, such as chlordanes, using gas chromatography-mass spectrometer (GC-MS) with negative chemical ionization, and dichlorodiphenyl trichloroethane (DDT) and its metabolites using GC-MS with electron impact ionization. RESULTS: The mean total PCBs (11 congeners), total chlordane, and total DDT concentrations were 76.2 ng/g lipid, 39.8 ng/g lipid, and 73.5 ng/g lipid, respectively. For the samples collected in 2012, the concentrations of POPs in breast milk showed minimal changes compared with results from previous years for samples collected at the same hospital in Sendai. CONCLUSIONS: Our study demonstrates that 1 year after the earthquake and tsunami, the concentrations of chlorinated POPs in breast milk had not changed substantially. FAU - Choi, Jungmi AU - Choi J AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. AD - Department of Research Promotion and Management, National Cerebral and Cardiovascular Center Research Institute. FAU - Fujii, Yukiko AU - Fujii Y AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. AD - Department of Pharmaceutical Sciences, Daiichi University of Pharmacy. FAU - Lyu, Zhaoqing AU - Lyu Z AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. FAU - Kobayashi, Hatasu AU - Kobayashi H AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. AD - Department of Environmental and Molecular Medicine, Mie University Graduate School of Medicine. FAU - Fujitani, Tomoko AU - Fujitani T AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. FAU - Harada, Kouji H AU - Harada KH AUID- ORCID: 0000-0001-7319-123X AD - Department of Health and Environmental Science, Kyoto University Graduate School of Medicine. LA - eng PT - Journal Article PL - Japan TA - Environ Health Prev Med JT - Environmental health and preventive medicine JID - 9609642 RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - 0 (Persistent Organic Pollutants) RN - CIW5S16655 (DDT) RN - 0 (Environmental Pollutants) RN - 12789-03-6 (Chlordan) RN - 0 (Lipids) SB - IM MH - Female MH - Humans MH - *Polychlorinated Biphenyls MH - *Earthquakes MH - Persistent Organic Pollutants MH - DDT/analysis MH - Milk, Human/chemistry/metabolism MH - Japan MH - Lactation MH - *Disasters MH - *Environmental Pollutants/analysis MH - Chlordan/analysis MH - Lipids PMC - PMC10188281 OTO - NOTNLM OT - Breast milk OT - Great East Japan Earthquake OT - Japan OT - Natural disaster OT - Persistent organic pollutant COIS- The authors declare that they have no competing interests. EDAT- 2023/05/08 00:41 MHDA- 2023/05/09 06:42 PMCR- 2023/05/02 CRDT- 2023/05/07 21:53 PHST- 2023/05/09 06:42 [medline] PHST- 2023/05/08 00:41 [pubmed] PHST- 2023/05/07 21:53 [entrez] PHST- 2023/05/02 00:00 [pmc-release] AID - 22-00260 [pii] AID - 10.1265/ehpm.22-00260 [doi] PST - ppublish SO - Environ Health Prev Med. 2023;28:27. doi: 10.1265/ehpm.22-00260.