Common environmental chemicals do not explain atopy contrast in the Finnish and Russian Karelia

• Published in: Clinical and Translational Allergy
• Main Authors: Koskinen, Jyri-Pekka, Kiviranta, Hannu, Vartiainen, Erkki, Jousilahti, Pekka, Vlasoff, Tiina, von Hertzen, Leena, Mäkelä, Mika, Laatikainen, Tiina, Haahtela, Tari
• Other Authors: Department of Dermatology, Allergology and Venereology, Clinicum
• Format: Article in Journal/Newspaper
• Language: English
• Published: BMC 2017
• Subjects: Allergy; Atopy; Environmental chemicals; Finnish Karelia; Russian Karelia; PERSISTENT ORGANIC POLLUTANTS; PRENATAL EXPOSURE; CHILDREN; ASTHMA; 3121 General medicine; internal medicine and other clinical medicine; karelia*; karelian
• Online Access: http://hdl.handle.net/10138/173636

Background: Atopic allergy is much more common in Finnish compared with Russian Karelia, although these areas are geographically and genetically close. To explore the role of environmental chemicals on the atopy difference a random sample of 200 individuals, 25 atopic and 25 non-atopic school-aged children and their mothers, were studied. Atopy was defined as having at least one positive skin prick test response to 14 common inhalant and food allergens tested. Concentrations of 11 common environmental pollutants were measured in blood samples. Results: Overall, the chemical levels were much higher in Russia than in Finland, except for 2,2', 4,4'-tetra-bromodiphenyl ether (BDE47). In Finland but not in Russia, the atopic children had higher concentrations of polychlorinated biphenyls and 1,1-Dichloro-2,2-bis-(p-chlorophenyl)-ethylene (DDE) than the non-atopic children. In Russia but not in Finland, the atopic mothers had higher DDE concentrations than the non-atopic mothers. Conclusions: Higher concentrations of common environmental chemicals were measured in Russian compared with Finnish Karelian children and mothers. The chemicals did not explain the higher prevalence of atopy on the Finnish side. Peer reviewed