PMID- 20585661 OWN - NLM STAT- MEDLINE DCOM- 20110113 LR - 20240313 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 5 IP - 6 DP - 2010 Jun 23 TI - A nested case-control study of intrauterine exposure to persistent organochlorine pollutants in relation to risk of type 1 diabetes. PG - e11281 LID - 10.1371/journal.pone.0011281 [doi] LID - e11281 AB - BACKGROUND: The incidence of type 1 diabetes in Europe is increasing at a rate of about 3% per year and there is also an increasing incidence throughout the world. Type 1 diabetes is a complex disease caused by multiple genetic and environmental factors. Persistent organochlorine pollutants (POPs) have been suggested as a triggering factor for developing childhood type 1 diabetes. The aim of this case-control study was to assess possible impacts of in utero exposure to POPs on type 1 diabetes. METHODOLOGY/ PRINCIPAL FINDINGS: The study was performed as a case-control study within a biobank in Malmo, a city located in the Southern part of Sweden. The study included 150 cases (children who had their diagnosis mostly before 18 years of age) and 150 controls, matched for gender and day of birth. 2,2',4,4',5,5'-hexachlorobiphenyl (PCB-153) and the major DDT metabolite 1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene (p,p'-DDE) were used as a biomarkers for POP exposure. When comparing the quartile with the highest maternal serum concentrations of PCB-153 with the other quartiles, an odds ratio (OR) of 0.73 (95% confidence interval [CI] 0.42, 1.27) was obtained. Similar results was obtained for p,p'-DDE (OR 0.56, 95% CI 0.29, 1.08). CONCLUSIONS: The hypothesis that in utero exposure to POPs will trigger the risk for developing type 1 diabetes was not supported by the results. The risk estimates did, although not statistically significant, go in the opposite direction. However, it is not reasonable to believe that exposure to POPs should protect against type 1 diabetes. FAU - Rignell-Hydbom, Anna AU - Rignell-Hydbom A AD - Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden. anna.rignell-hydbom@med.lu.se FAU - Elfving, Maria AU - Elfving M FAU - Ivarsson, Sten A AU - Ivarsson SA FAU - Lindh, Christian AU - Lindh C FAU - Jonsson, Bo A G AU - Jonsson BA FAU - Olofsson, Per AU - Olofsson P FAU - Rylander, Lars AU - Rylander L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100623 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Biomarkers) RN - 0 (Environmental Pollutants) RN - CIW5S16655 (DDT) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - ZRU0C9E32O (2,4,5,2',4',5'-hexachlorobiphenyl) SB - IM MH - Biomarkers/metabolism MH - Case-Control Studies MH - Child MH - Child, Preschool MH - DDT/*toxicity MH - Diabetes Mellitus, Type 1/*etiology MH - *Environmental Exposure MH - Environmental Pollutants/*toxicity MH - Female MH - Humans MH - Polychlorinated Biphenyls/*toxicity MH - Pregnancy MH - *Prenatal Exposure Delayed Effects PMC - PMC2890585 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2010/06/30 06:00 MHDA- 2011/01/14 06:00 PMCR- 2010/06/23 CRDT- 2010/06/30 06:00 PHST- 2010/02/23 00:00 [received] PHST- 2010/05/16 00:00 [accepted] PHST- 2010/06/30 06:00 [entrez] PHST- 2010/06/30 06:00 [pubmed] PHST- 2011/01/14 06:00 [medline] PHST- 2010/06/23 00:00 [pmc-release] AID - 10-PONE-RA-16518R1 [pii] AID - 10.1371/journal.pone.0011281 [doi] PST - epublish SO - PLoS One. 2010 Jun 23;5(6):e11281. doi: 10.1371/journal.pone.0011281.