Cited by 337Gut microbiota and healthInfant Nutrition and HealthProbiotics and Fermented Foods

Influence of early gut microbiota on the maturation of childhood mucosal and systemic immune responses: Gut microbiota and immune responses

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Sjögren, Y. M., Tomicic, S., Lundberg, A., Böttcher, M. F., Björkstén, B., Sverremark‐Ekström, E., Jenmalm, M. C.·2009·Clinical & Experimental Allergy

Abstract

Summary: Introduction Among sensitized infants, those with high, as compared with low levels, of salivary secretory IgA (SIgA) are less likely to develop allergic symptoms. Also, early colonization with certain gut microbiota, e.g. Lactobacilli and Bifidobacterium species, might be associated with less allergy development. Although animal and in vitro studies emphasize the role of the commensal gut microbiota in the development of the immune system, the influence of the gut microbiota on immune development in infants is unclear. Objective To assess whether early colonization with certain gut microbiota species associates with mucosal and systemic immune responses i.e. salivary SIgA and the spontaneous Toll‐like receptor (TLR) 2 and TLR4 mRNA expression and lipopolysaccharide (LPS)‐induced cytokine/chemokine responses in peripheral blood mononuclear cells (PBMCs). Methods Fecal samples were collected at 1 week, 1 month and 2 months after birth from 64 Swedish infants, followed prospectively up to 5 years of age. Bacterial DNA was analysed with real‐time PCR using primers binding to Clostridium difficile , four species of bifidobacteria, two lactobacilli groups and Bacteroides fragilis . Saliva was collected at age 6 and 12 months and at 2 and 5 years and SIgA was measured with ELISA. The PBMCs, collected 12 months after birth, were analysed for TLR2 and TLR4 mRNA expression with real‐time PCR. Further, the PBMCs were stimulated with LPS, and cytokine/chemokine responses were measured with Luminex. Results The number of Bifidobacterium species in the early fecal samples correlated significantly with the total levels of salivary SIgA at 6 months. Early colonization with Bifidobacterium species, lactobacilli groups or C. difficile did not influence TLR2 and TLR4 expression in PBMCs. However, PBMCs from infants colonized early with high amounts of Bacteroides fragilis expressed lower levels of TLR4 mRNA spontaneously. Furthermore, LPS‐induced production of inflammatory cytokines and chemokines, e.g. IL‐6 and CCL4 (MIP‐1β), was inversely correlated to the relative amounts of Bacteroides fragilis in the early fecal samples. Conclusion Bifidobacterial diversity may enhance the maturation of the mucosal SIgA system and early intense colonization with Bacteroides fragilis might down‐regulate LPS responsiveness in infancy.

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Crossref · 10.1111/j.1365-2222.2009.03326.x

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  • The intestinal microbiota regulates important metabolic and physiological functions of the host and drives the maturation of the immune system in early life, contributing to homeostasis during life.

    “This microbial community regulates some important metabolic and physiological functions of the host, and drives the maturation of the immune system in early life, contributing to its homeostasis during life.”

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Authors
Sjögren, Y. M., Tomicic, S., Lundberg, A., Böttcher, M. F., Björkstén, B., Sverremark‐Ekström, E., & Jenmalm, M. C.
Affiliations
  • Stockholm University (SE)
  • Linköping University (SE)
  • Karolinska Institutet (SE)
Corresponding author
Sjögren, Y. M.
Venue
Clinical & Experimental Allergy
Publisher
Wiley
Published
2009-11-13
Volume
39
Issue
12
Pages
1842-1851
ISSN
  • 0954-7894 (ISSN-L)
  • 1365-2222
OpenAlex
W2139247373
Cited by
337
References
41
Citations by year
2026: 5 · 2025: 10 · 2024: 24 · 2023: 12 · 2022: 17 · 2021: 21 · 2020: 24 · 2019: 24 · 2018: 19 · 2017: 25 · 2016: 19 · 2015: 22 · 2014: 28 · 2013: 26 · 2012: 24
FWCI
8.18
Type
journal article
Language
en
Open access
Locations
  • Clinical & Experimental Allergy (publishedVersion)
  • PubMed (publishedVersion)
  • KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
gut microbiota, infant gut colonization, salivary IgA, Bacteroides fragilis, Bifidobacterium, Lactobacillus, Clostridium difficile, TLR4, TLR2, lipopolysaccharide response, cytokine and chemokine production, mucosal immunity
MeSH terms
Bacteroides fragilis, Bifidobacterium, Child, Preschool, Feces, Female, Humans, Immunoglobulin A, Secretory, Immune System, Immunity, Infant, Infant, Newborn, Interferon-gamma, Interleukins, Intestines, Lactobacillus, Leukocytes, Mononuclear, Lipopolysaccharides, Longitudinal Studies, Male, Phytohemagglutinins, Saliva, Tumor Necrosis Factor-alpha, Interleukin-6, Gene Expression, Clostridioides difficile, Immunity, Mucosal, Toll-Like Receptor 4, Chemokine CCL4, Metagenome

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