Prelabor cesarean section bypasses natural immune cell maturation

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Presentation transcript:

Prelabor cesarean section bypasses natural immune cell maturation Anna Hammerich Thysen, PhD, Jeppe Madura Larsen, PhD, Morten Arendt Rasmussen, PhD, Jakob Stokholm, PhD, Klaus Bønnelykke, PhD, Hans Bisgaard, DMSc, Susanne Brix, PhD Journal of Allergy and Clinical Immunology Volume 136, Issue 4, Pages 1123-1125.e6 (October 2015) DOI: 10.1016/j.jaci.2015.04.044 Copyright © 2015 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 1 Cord blood immune cell frequencies in newborns delivered by C-section as compared with newborns delivered by natural birth. Data represent the ratio of geometric means with 95% CIs of immune cell subsets in cord blood of children born by C-section (A, n = 20), prelabor C-section (B, n = 14), or in-labor C-section (C, n = 6) as compared with children born by natural birth (n = 71). Act., Activated; clas., classical; infl., inflammatory; iNKT, invariant NKT; int., intermediate; pDC, plasmacytoid DC; Tregs, regulatory T cells. Journal of Allergy and Clinical Immunology 2015 136, 1123-1125.e6DOI: (10.1016/j.jaci.2015.04.044) Copyright © 2015 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 2 Cord blood immune cell profile and delivery mode in relation to gestational age. A and B, PLSDA model of cord blood immune cell distributions separating C-section and natural-born neonates. Fig 2, A, In the score plot, each dot represents the composition of immune cell subsets of a single child. Dots are colored by delivery mode, and shaded areas represent ±1 SD spatially. Fig 2, B, The associated loading plot depicts the profile of cord blood immune cells separating infants born by C-section and natural birth. C, The score plot from the PLSDA model in Fig 2, A, labeled and colored by prelabor C-section (PL-CS), in-labor C-section (IL-CS), spontaneous natural birth (S-NB), and induced natural birth (I-NB). D, Correlation of maternal gestational age with the immune cell profile represented by LV1 for natural birth (n = 51), induced birth (n = 16), IL-CS (n = 4) and PL-CS (n = 13). Int.mono, Intermediate monocytes; Treg, regulatory T cells. Journal of Allergy and Clinical Immunology 2015 136, 1123-1125.e6DOI: (10.1016/j.jaci.2015.04.044) Copyright © 2015 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E1 Gating strategy. Cord blood immune cell phenotypes are labeled in 5 separate tubes. Each tube is initially gated on forward-side scatter properties and singlets are selected on the basis of area versus height parameters of forward scatter (FSC). Flow-count beads, granulocyte subsets, and B cells are selected in tube 1. γδT cells, αβT cells, CD4 T cells, CD8 T cells, and regulatory T (Treg) cells are quantified within tube 2 and invariant NKT cells in tube 3. Subsets of DCs and monocytes are gated in tube 4, while NK cells are detected in tube 5. PE, Phycoerythrin; SSC, side scatter. Journal of Allergy and Clinical Immunology 2015 136, 1123-1125.e6DOI: (10.1016/j.jaci.2015.04.044) Copyright © 2015 American Academy of Allergy, Asthma & Immunology Terms and Conditions