Gut microbiota maturity mediates the protective effect of siblings on food allergy
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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Gut microbiota maturity mediates the protective effect of siblings on food allergy. / Gao, Yuan; Stokholm, Jakob; O'Hely, Martin; Ponsonby, Anne Louise; Tang, Mimi L.K.; Ranganathan, Sarath; Saffery, Richard; Harrison, Leonard C.; Collier, Fiona; Gray, Lawrence; Burgner, David; Molloy, John; Sly, Peter D.; Brix, Susanne; Frøkiær, Hanne; Vuillermin, Peter; BIS Investigator Group.
I: Journal of Allergy and Clinical Immunology, Bind 152, Nr. 3, 2023, s. 667-675.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Gut microbiota maturity mediates the protective effect of siblings on food allergy
AU - Gao, Yuan
AU - Stokholm, Jakob
AU - O'Hely, Martin
AU - Ponsonby, Anne Louise
AU - Tang, Mimi L.K.
AU - Ranganathan, Sarath
AU - Saffery, Richard
AU - Harrison, Leonard C.
AU - Collier, Fiona
AU - Gray, Lawrence
AU - Burgner, David
AU - Molloy, John
AU - Sly, Peter D.
AU - Brix, Susanne
AU - Frøkiær, Hanne
AU - Vuillermin, Peter
AU - BIS Investigator Group
N1 - Publisher Copyright: © 2023 American Academy of Allergy, Asthma & Immunology
PY - 2023
Y1 - 2023
N2 - Background: The mechanisms underlying the protective effect of older siblings on allergic disease remain unclear but may relate to the infant gut microbiota. Objective: We sought to investigate whether having older siblings decreases the risk of IgE-mediated food allergy by accelerating the maturation of the infant gut microbiota. Methods: In a birth cohort assembled using an unselected antenatal sampling frame (n = 1074), fecal samples were collected at 1 month, 6 months, and 1 year, and food allergy status at 1 year was determined by skin prick test and in-hospital food challenge. We used 16S rRNA gene amplicon sequencing to derive amplicon sequence variants. Among a random subcohort (n = 323), microbiota-by-age z scores at each time point were calculated using fecal amplicon sequence variants to represent the gut microbiota maturation over the first year of life. Results: A greater number of siblings was associated with a higher microbiota-by-age z score at age 1 year (β = 0.15 per an additional sibling; 95% CI, 0.05-0.24; P = .003), which was in turn associated with decreased odds of food allergy (odds ratio, 0.45; 95% CI, 0.33-0.61; P < .001). Microbiota-by-age z scores mediated 63% of the protective effect of siblings. Analogous associations were not observed at younger ages. Conclusions: The protective effect of older siblings on the risk of developing IgE-mediated food allergy during infancy is substantially mediated by advanced maturation of the gut microbiota at age 1 year.
AB - Background: The mechanisms underlying the protective effect of older siblings on allergic disease remain unclear but may relate to the infant gut microbiota. Objective: We sought to investigate whether having older siblings decreases the risk of IgE-mediated food allergy by accelerating the maturation of the infant gut microbiota. Methods: In a birth cohort assembled using an unselected antenatal sampling frame (n = 1074), fecal samples were collected at 1 month, 6 months, and 1 year, and food allergy status at 1 year was determined by skin prick test and in-hospital food challenge. We used 16S rRNA gene amplicon sequencing to derive amplicon sequence variants. Among a random subcohort (n = 323), microbiota-by-age z scores at each time point were calculated using fecal amplicon sequence variants to represent the gut microbiota maturation over the first year of life. Results: A greater number of siblings was associated with a higher microbiota-by-age z score at age 1 year (β = 0.15 per an additional sibling; 95% CI, 0.05-0.24; P = .003), which was in turn associated with decreased odds of food allergy (odds ratio, 0.45; 95% CI, 0.33-0.61; P < .001). Microbiota-by-age z scores mediated 63% of the protective effect of siblings. Analogous associations were not observed at younger ages. Conclusions: The protective effect of older siblings on the risk of developing IgE-mediated food allergy during infancy is substantially mediated by advanced maturation of the gut microbiota at age 1 year.
KW - birth cohort
KW - Food allergy
KW - microbiota maturation
KW - siblings
U2 - 10.1016/j.jaci.2023.02.034
DO - 10.1016/j.jaci.2023.02.034
M3 - Journal article
C2 - 37150361
AN - SCOPUS:85163821830
VL - 152
SP - 667
EP - 675
JO - Journal of Allergy and Clinical Immunology
JF - Journal of Allergy and Clinical Immunology
SN - 0091-6749
IS - 3
ER -
ID: 367486222