in those with a family history of CD, according to Renata Auricchio, MD, University of Naples (Italy) Federico II, and her associates.
In a prospective cohort study, 373 newborns from families with at least one relative with CD were recruited. The cumulative incidence of new cases of CD was 6% at 3 years and 13.5% at 5 years of age, the researchers noted. In the first year when no child produced anti-tissue transglutaminase (anti-tTG) antibodies, respiratory infections (upper and lower tract) were more common among the case patients than among the controls (58% vs. 40%). During the second year, respiratory infections were again more frequent among the case patients than among controls (52% vs. 32%). And in the third year of life when most of the case patients were diagnosed with CD, no clinical event was more frequent in the case patients than in the control group.
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“In this study, we report that early infections significantly contribute to the risk of developing CD,” Dr. Auricchio and her associates concluded. “It is possible that the exposure to early infection stimulates a genetically predisposed immune profile, which contributes to the switch from tolerance to intolerance to gluten, which is a common food antigen.”
Read the full study in Pediatrics (doi: 10.1542/peds.2016-4102).