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Functional and Developmental Analysis of CD4+CD25+ Regulatory T Cells under the Influence of Streptococcal M Protein in Rheumatic Heart Disease | ||
| Iranian Journal of Medical Sciences | ||
| مقاله 8، دوره 36، شماره 2، شهریور 2011، صفحه 122-127 اصل مقاله (184.34 K) | ||
| نوع مقاله: Brief Report(s) | ||
| نویسندگان | ||
| Nidhal Abdul-Auhaimen* ؛ Zaman I. L. Al-Kaabi | ||
| Department of Microbiology, Alnahrain College of Medicine P.O. Box 12444, Baghdad, Iraq | ||
| چکیده | ||
| The purpose of this study was to determine the role of streptococcal M protein in naturally-occurring CD4+CD25+ regulatory T cells (nTregs) function and development in rheumatic heart disease in Iraqi patients. Streptococcus pyogenes was isolated for subsequent M protein extraction. Also, peripheral blood nTregs and CD4+ T cells were isolated by using Magnetic Cell Separation System. Tissue culture for isolated cells was performed in the presence and absence of M protein. Cell count was performed, and tumor necrosis factor alpha (TNF-α) and interleukin-4 (IL-4) were determined in culture supernatant using ELISA system. There was a significant positive correlation (P0.05), association (r=0.353) between the mean number of nTregs and CD4+ T cells in the presence of M protein. The M protein stimulated CD4+ T cells to produce IL-4 in very little amount ( | ||
| کلیدواژهها | ||
| Rheumatic heart disease؛ CD4+CD25+ regulatory T cells؛ M protein | ||
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