A A Jepsen1, B L Chawes1, C G Carson1, A-M M Schoos1, A H Thysen1, J Waage1, S Brix2, H Bisgaard3. 1. COPSAC, Copenhagen Prospective Study on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. 2. Department of Systems Biology, Center for Biological Sequence Analysis, Technical University of Denmark, Copenhagen, Denmark. 3. COPSAC, Copenhagen Prospective Study on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. bisgaard@copsac.com.
Abstract
BACKGROUND: We recently demonstrated a dual effect of breastfeeding with increased risk of eczema and decreased risk of wheezing in early childhood by increasing breastfeeding length. We hypothesize that immune mediators in breast milk could explain such association either through a direct effect or as a surrogate marker of maternal immune constitution. OBJECTIVE: To investigate the possible association between cytokine and chemokine levels in breast milk and development of eczema and recurrent wheeze during early childhood. METHODS: Levels of 19 pro-inflammatory and immunoregulatory cytokines and chemokines were measured in 223 breast milk samples from mothers in the Copenhagen Prospective Study on Asthma in Childhood2000 (COPSAC) high-risk birth cohort. Eczema and recurrent wheeze at the age of 0-3 years were prospectively diagnosed by COPSAC physicians adherent to predefined validated algorithms. Association analyses were performed by Cox regression adjusting for potential confounding factors and by multivariable principal component analysis. RESULTS: Increased IL-1β in breast milk (≥ 0.7 pg/mL) was associated with more than a halved risk of eczema before age three (aHR = 0.41; 95% CI = 0.24-0.68; P < 0.001), which remained significant after false discovery rate adjustment (P = 0.008). The principal component analysis confirmed that a mediator pattern dominated by high levels of IL-1β, IL-17A, and CCL17 and low levels of CXCL1 and TSLP in breast milk protected against eczema (aHR = 0.82; 95% CI = 0.68-0.98; P = 0.03). No associations were observed for recurrent wheeze. CONCLUSIONS AND CLINICAL RELEVANCE: Elevated breast milk IL-1β level was associated with decreased risk of early childhood eczema suggesting either a direct protective effect of IL-1β or IL-1b acting as a proxy for a healthy maternal immune system protecting high-risk offspring from eczema.
BACKGROUND: We recently demonstrated a dual effect of breastfeeding with increased risk of eczema and decreased risk of wheezing in early childhood by increasing breastfeeding length. We hypothesize that immune mediators in breast milk could explain such association either through a direct effect or as a surrogate marker of maternal immune constitution. OBJECTIVE: To investigate the possible association between cytokine and chemokine levels in breast milk and development of eczema and recurrent wheeze during early childhood. METHODS: Levels of 19 pro-inflammatory and immunoregulatory cytokines and chemokines were measured in 223 breast milk samples from mothers in the Copenhagen Prospective Study on Asthma in Childhood2000 (COPSAC) high-risk birth cohort. Eczema and recurrent wheeze at the age of 0-3 years were prospectively diagnosed by COPSAC physicians adherent to predefined validated algorithms. Association analyses were performed by Cox regression adjusting for potential confounding factors and by multivariable principal component analysis. RESULTS: Increased IL-1β in breast milk (≥ 0.7 pg/mL) was associated with more than a halved risk of eczema before age three (aHR = 0.41; 95% CI = 0.24-0.68; P < 0.001), which remained significant after false discovery rate adjustment (P = 0.008). The principal component analysis confirmed that a mediator pattern dominated by high levels of IL-1β, IL-17A, and CCL17 and low levels of CXCL1 and TSLP in breast milk protected against eczema (aHR = 0.82; 95% CI = 0.68-0.98; P = 0.03). No associations were observed for recurrent wheeze. CONCLUSIONS AND CLINICAL RELEVANCE: Elevated breast milk IL-1β level was associated with decreased risk of early childhood eczema suggesting either a direct protective effect of IL-1β or IL-1b acting as a proxy for a healthy maternal immune system protecting high-risk offspring from eczema.
Authors: Daniel Munblit; Diego G Peroni; Alba Boix-Amorós; Peter S Hsu; Belinda Van't Land; Melvin C L Gay; Anastasia Kolotilina; Chrysanthi Skevaki; Robert J Boyle; Maria Carmen Collado; Johan Garssen; Donna T Geddes; Ralph Nanan; Carolyn Slupsky; Ganesa Wegienka; Anita L Kozyrskyj; John O Warner Journal: Nutrients Date: 2017-08-17 Impact factor: 5.717
Authors: Oleg Blyuss; Ka Yan Cheung; Jessica Chen; Callum Parr; Loukia Petrou; Alina Komarova; Maria Kokina; Polina Luzan; Egor Pasko; Alina Eremeeva; Dmitrii Peshko; Vladimir I Eliseev; Sindre Andre Pedersen; Meghan B Azad; Kirsi M Jarvinen; Diego G Peroni; Valerie Verhasselt; Robert J Boyle; John O Warner; Melanie R Simpson; Daniel Munblit Journal: Nutrients Date: 2019-10-10 Impact factor: 5.717