DIABIMMUNE – EU-Russian teams pave the way for preventive treatment of diabetes and autoimmune diseases

Preliminary data indicate that there is a strong association between the incidence of immune- mediated diseases and improving standards of living and hygiene. One of the biggest contrasts in standard of living worldwide is present at the border between Russian Karelia and Finland, with a sevenfold difference in the gross national product, while Estonia represents a country in rapid transition.

These three populations comprise a ‘living laboratory’ providing a unique possibility to test the hygiene hypothesis and gene-environmental interactions in the development of immune- mediated diseases. According to the hygiene hypothesis there is an association between the increased incidence and prevalence of immune- mediated diseases and decreased exposure to the pathogens. The increased incidence of allergy and asthma in developed countries was initially explained by the hygiene hypothesis, but nowadays the increased incidence of autoimmune diseases, such as type 1 diabetes (T1D) is also explained by this hypothesis.

The incidence of T1D is six times lower in Russian Karelia than  in Finland, whereas there are very limited differences in the frequency of predisposing and protective HLA (human leukocyte antigen) genotypes in the background population.

The aim of the DIABIMMUNE project is to assess the role of the hygiene hypothesis in the development of immune-mediated diseases, T1D in particular, and to define the mechanisms behind the potential protective effect conferred by microbial agents. The study design comprises two cohorts: a birth cohort and a cohort comprising young children. The objective is to study 2000 children at the age of three and five years and to observe 320 newborn infants with increased genetic risk of autoimmune disease from birth up to the age of three years. The estimated number of study subjects will altogether be approximately 7000 with Finland, Russian Karelia and Estonia each contributing 2320 subjects. The children are tested for organ-specific autoantibodies, allergies, infections, gut microflora, and for nutritional factors.

More information at:
http://www.diabimmune.org

Contact:
Principal Investigator Mikael Knip
mikael.knip@helsinki.fi

Study Coordinator Katriina Koski
Katriina.koski@helsinki.fi

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