[en] AIM: To understand the effects of delivery mode on the immune cells frequency and function in cord blood and placenta. METHODS: We evaluated immunological differences in cord blood and placental tissues for a case of twins one of which delivered vaginally while the other delivered by caesarian section (C-section). Cord blood mononuclear cells were isolated and placenta tissues were processed for cell isolation. Immune phenotyping was performed by flow cytometry methods following staining for T cells, natural killer (NK) cells, monocytes, neutrophils and CD71(+) erythroid cells in both cord blood and placenta tissues. In addition, fetal calprotectin of twins was measured 12 wk after birth. RESULTS: We found lower percentages of immune cells (e.g. T cells, monocytes and neutrophils) in the cord blood of C-section delivered compared to vaginally delivered newborn. In contrast, percentages of monocytes and neutrophils were > 2 folds higher in the placental tissues of C-section delivered newborn. More importantly, we observed lower percentages of CD71(+) erythroid cells in both cord blood and placental tissues of C-section delivered case. Lower CD71(+) erythroid cells were associated with a more pro-inflammatory milieu at the fetomaternal interface reflected by higher expression of inhibitory receptors on CD4(+) T cells, higher frequency of monocytes and neutrophils. Furthermore, type of delivery impacted the gene expression profile in CD71(+) erythroid cells. Finally, we found that C-section delivered child had > 20-fold higher FCP in his fecal sample at 12 wk of age. CONCLUSION: Mode of delivery impacted immune cells profile in cord blood/placenta. In particular frequency of immunosuppressive CD71(+) erythroid cells was reduced in C-section delivered newborn.
Disciplines :
Immunology & infectious disease
Author, co-author :
Dunsmore, Garett ; Université de Liège - ULiège > Département des sciences fonctionnelles (DSF) > Physiologie générale et des systèmes ; Department of Dentistry and Department of Medical Microbiology and Immunology, University of Alberta, Edmonton T6G2E1, Alberta, Canada.
Koleva, Petya; Department of Dentistry, University of Alberta, Edmonton T6G2E1 Alberta, Canada.
Sutton, Reed Taylor; Division of Gastroenterology, University of Alberta, Edmonton T6G2E1, Alberta, Canada.
Ambrosio, Lindsy; Division of Gastroenterology, University of Alberta, Edmonton T6G2E1, Alberta, Canada.
Huang, Vivian; Division of Gastroenterology, University of Alberta, Edmonton, T6G 2E1, Alberta, Canada and Division of Gastroenterology, University of Toronto, Mount Sinai Hospital, Sinai Health System, Toronto, M5G 1X5, Ontario, Canada.
Elahi, Shokrollah; Department of Dentistry and Department of Medical Microbiology and Immunology, University of Alberta, Edmonton T6G2E1, Alberta, Canada. elahi@ualberta.ca.
Language :
English
Title :
Mode of delivery by an ulcerative colitis mother in a case of twins: Immunological differences in cord blood and placenta.
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