Document Detail


Impaired function of regulatory T cells in cord blood of children of allergic mothers.
MedLine Citation:
PMID:  22943196     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Allergy is one of the most common diseases with constantly increasing incidence. The identification of prognostic markers pointing to increased risk of allergy development is of importance. Cord blood represents a suitable source of cells for searching for such prognostic markers. In our previous work, we described the increased reactivity of cord blood cells of newborns of allergic mothers in comparison to newborns of healthy mothers, which raised the question of whether or not this was due to the impaired function of regulatory T cells (T(regs)) in high-risk children. Therefore, the proportion and functional properties of T(regs) in cord blood of children of healthy and allergic mothers were estimated by flow cytometry. The proportion of T(regs) [CD4(+)CD25(high)CD127(low) forkhead box protein 3 (FoxP3(+))] in cord blood of children of allergic mothers tends to be higher while, in contrast, the median of fluorescence intensity of FoxP3 was increased significantly in the healthy group. Intracellular presence of regulatory cytokines interleukin (IL)-10 and transforming growth factor (TGF)-beta was also higher in T(regs) of children of healthy mothers. Although we detected an increased proportion of T(regs) in cord blood of children of allergic mothers, the functional indicators (intracellular presence of regulatory cytokines IL-10 and TGF-beta, median of fluorescence intensity of FoxP3) of those T(regs) were lower in comparison to the healthy group. We can conclude that impaired function of T(regs) in cord blood of children of allergic mothers could be compensated partially by their increased number. Insufficient function of T(regs) could facilitate allergen sensitization in high-risk individuals after subsequent allergen encounter.
Authors:
J Hrdý; I Kocourková; L Prokešová
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical and experimental immunology     Volume:  170     ISSN:  1365-2249     ISO Abbreviation:  Clin. Exp. Immunol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-04     Completed Date:  2012-11-16     Revised Date:  2013-10-10    
Medline Journal Info:
Nlm Unique ID:  0057202     Medline TA:  Clin Exp Immunol     Country:  England    
Other Details:
Languages:  eng     Pagination:  10-7     Citation Subset:  IM    
Copyright Information:
© 2012 The Authors. Clinical and Experimental Immunology © 2012 British Society for Immunology.
Affiliation:
Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University in Prague, Czech Republic.
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MeSH Terms
Descriptor/Qualifier:
Antigens, CD4 / metabolism
Case-Control Studies
Female
Fetal Blood / cytology,  immunology*,  metabolism
Flow Cytometry
Forkhead Transcription Factors / immunology,  metabolism*
Humans
Hypersensitivity / blood,  immunology*
Infant, Newborn
Interleukin-10 / blood,  metabolism
Interleukin-2 Receptor alpha Subunit / metabolism
Interleukin-7 Receptor alpha Subunit / metabolism
Pregnancy
T-Lymphocytes, Regulatory / immunology*,  metabolism
Transforming Growth Factor beta / blood,  metabolism
Chemical
Reg. No./Substance:
0/Antigens, CD4; 0/FOXP3 protein, human; 0/Forkhead Transcription Factors; 0/IL2RA protein, human; 0/Interleukin-2 Receptor alpha Subunit; 0/Interleukin-7 Receptor alpha Subunit; 0/Transforming Growth Factor beta; 130068-27-8/Interleukin-10
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