Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
3065982 | Journal of Neuroimmunology | 2006 | 13 Pages |
Abstract
Human T cells adopt a CD28−CD57+ phenotype in chronic viral infections and this has been hypothesized to result from continuous stimulation, however this phenotype may be due to direct viral effects on T cells. Employing MS patients before and after chronic in vivo administration of the antigen glatiramer acetate (GA) we examine this hypothesis. Pre-treatment glatiramer acetate-specific CD8 T cells were CD57−Perforin−. This changed to a predominantly CD28−CD57+Perforin+ response after administration of this drug. This phenotype was only observed after chronic stimulation and not in a recall response to mumps. The relevance to GA's mechanism of action is discussed.
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Authors
Robert B. Ratts, Amy E. Lovett-Racke, Judy Choy, Sara C. Northrop, Rehana Z. Hussain, Nitin J. Karandikar, Michael K. Racke,