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Article Dans Une Revue Alimentary Pharmacology and Therapeutics Année : 2011

LOW EXPOSURE TO SUNLIGHT IS A RISK FACTOR FOR CROHN'S DISEASE

Résumé

Background: Low sunshine exposure might contribute to IBD pathogenesis. Aim: To assess the geographic distribution of IBD incidence in relation to sunshine exposure in France, in order to test the hypothesis that higher sun exposure is associated with lower IBD risk. Methods: Using the national health insurance databases, incidence rates of CD and UC were estimated for each of 94 French administrative areas ("départements"), in 2000-2002. The surface UV radiation intensity was obtained by combining modeling and satellite data from Meteosat®, the European meteorological satellite. Relationships between incidence rates and sun exposure were tested for significance by using a Poisson regression. We mapped smoothed relative risks (sRR) for CD and UC, using a Bayesian approach and adjusting for sun exposure, in order to search for geographical variations. Results: Areas with a smoothed RR of CD incidence significantly above 1 corresponded to areas with low sunshine exposure, whereas those with high or medium sunlight exposure had smoothed RRs either lower than 1 or not significantly different from 1. There was no association between sun exposure and UC incidence. Conclusions: This geographic study suggests that low sunlight exposure is associated with an increased incidence of CD. Further studies are needed to determine if this association is causal.
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Dates et versions

hal-00616237 , version 1 (20-08-2011)

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Virginie Nerich, Prevost Jantchou, Marie-Christine Boutron-Ruault, Elisabeth Monnet, Alain Weill, et al.. LOW EXPOSURE TO SUNLIGHT IS A RISK FACTOR FOR CROHN'S DISEASE: CROHN'S DISEASE AND SUN EXPOSURE. Alimentary Pharmacology and Therapeutics, 2011, 33 (8), pp.940. ⟨10.1111/j.1365-2036.2011.04601.x⟩. ⟨hal-00616237⟩
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