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ORIGINAL ARTICLE
Year : 2012  |  Volume : 16  |  Issue : 6  |  Page : 952-957

Regulatory T cells in children with recently diagnosed type 1 diabetes


1 Department of Clinical Pathology, South Egypt Cancer Institute, Egypt
2 Department of Pediatric, Faculty of Medicine, Assiut University, Egypt

Correspondence Address:
Kotb Abbass Metwalley
Department of Pediatric, Faculty of Medicine, Assiut University
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2230-8210.102998

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Background: Regulatory T cells have an important role in the control of immune reactivity against self antigens and probably play a role in pathogenesis of type 1 diabetes (T1D). We aimed to determine the frequency of regulatory T cells in recently diagnosed children with/T1D. Materials and Methods: 20 children with/T1D and 20 healthy children of matched age and sex as controls were enrolled in this study. All cases were subjected to a thorough history taking, full clinical examinations and investigations which include; insulin C peptide levels and flow cytometric detection of B-, T-lymphocytes and regulatory T cells. Results: Insulin C peptide level was significantly lower in children with/ T1D compared with controls. The percentages of B and T-lymphocytes were not significantly different between patients and controls. The percentages of CD4+CD25+High and CD4+CD25+High Foxp3+ cells both in total lymphocytes and in CD4+ lymphocytes were significantly decreased in patients than controls, while the percentages of total CD4+CD25+ and CD4+CD25+Intermediate both in total lymphocytes and in CD4+ lymphocytes were not significantly different between patients and controls. The geometric mean of fluorescence intensity (MFI) of Foxp3+ expression in CD4+CD25+High cells was significantly decreased in patients than controls. Positive correlations were observed between both age and insulin C peptide and frequency of CD4+CD25+High Foxp3. Conclusion: The percentage of regulatory T cells; CD4+CD25+High Foxp3 was decreased in children with recent T1D and may have a role in its pathogenesis. Their role as a prognostic signifi cance and their relation to various complications should be explored.


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