Academic Article


  • 2006

Immune system perturbations are involved in pre‐eclampsia pathophysiology. We hypothesised that immunomodulating substances, such as mycotoxins, endotoxins or pesticides, affect pre‐eclampsia risk. Associations between indicators of immunomodulating exposures in agriculture and pre‐eclampsia are reported. In a Norwegian family cohort based on participants in agricultural censuses conducted by Statistics Norway 1969–89, 183 313 pregnancies to farmers were identified in the Medical Birth Registry of Norway. Cases notified as pre‐eclampsia as well as pregnancies indicated by hypertension in combination with proteinuria were included. Data on farm production and meteorologically based fungal forecasts 1973–90 (a marker of temperate and humid climatic conditions known to favour fungal growth and mycotoxin formation in grain) were obtained and allocated to each farm. Pre‐eclampsia prevalence rates were studied in strata of exposure indicators using Poisson regression models. Adjusted rate ratios (RR) and 95% confidence intervals [CI] were computed. We identified 4912 cases, equivalent to 26.8 pre‐eclampsia cases per 1000 pregnancies [95% CI 26.1, 27.6]. Pre‐eclampsia showed moderate associations with animal farming, RR 1.14, [95% CI 1.07, 1.22] and moderate negative associations with grain production, RR 0.93, [95% CI 0.86, 1.01], and two or more fungal forecasts appearing in any year 1973–90, RR 0.90 [95% CI 0.84, 0.97], using...

Nordby, Karl-Christian; Irgens, Lorentz; Kristensen, Petter
Paediatric and Perinatal Epidemiology Blackwell Science Ltd., Paediatric and Perinatal Epidemiology 20(6): 462–470
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