• Nilofar V Følsgaard, Bo L Chawes, Morten A Rasmussen, Anne L Bischoff, Charlotte G Carson, Jakob Stokholm, Louise Pedersen, Trevor T Hansel, Klaus Bønnelykke, Susanne Brix, and Hans Bisgaard.
• Copenhagen Prospective Studies on Asthma in Childhood, Health Sciences, University of Copenhagen, Copenhagen University Hospital, Gentofte, Denmark.
• Am. J. Respir. Crit. Care Med. 2012 Feb 1; 185 (3): 275-80.

RationaleHeredity from mother or father may impact differently in complex diseases, such as atopy. Maternal atopy is a stronger risk factor than paternal atopy for the development of atopy in the offspring. We hypothesized that mother's and father's atopy would have a differential imprinting on the cytokines and chemokines in the upper airway mucosal lining fluid of healthy neonates.ObjectivesTo study parental atopic imprinting on the cytokines and chemokines in the upper airway mucosal lining fluid of healthy neonates.MethodsEighteen cytokines and chemokines were quantified in nasal mucosal lining fluid in 309 neonates from the novel unselected Copenhagen Prospective Study on Asthma in Childhood (COPSAC) birth cohort.Measurements And Main ResultsMaternal, but not paternal, atopic status (asthma, hay fever, or eczema with or without sensitization) was associated with general down-regulation of all 18 mediators assessed by principal component analysis (overall P = 0.015).ConclusionsMaternal atopy, but not paternal atopy, showed a strong linkage with a suppressed mucosal cytokine and chemokine signature in asymptomatic neonates, suggesting imprinting by the maternal milieu in utero or perinatal life.

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