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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Safavi, Farinaz Ciric, Bogoljub Zhang, Guang-Xian Hwang, Daniel Rasouli, Javad Rostami, Abdolmohamad Leist, Thomas P. Imitola, Jaime Gonnella, Patricia Mahajan, Kedar Mari, Elisabeth R. |
| Description | Author Affiliation: Rasouli J ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Ciric B ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Imitola J ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Gonnella P ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Hwang D ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Mahajan K ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Mari ER ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Safavi F ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Leist TP ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Zhang GX ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107.); Rostami A ( Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107 Rostami@jefferson.edu.) |
| Abstract | Multiple sclerosis (MS) is an autoimmune disease of the CNS. Studies in animal models of MS have shown that GM-CSF produced by T cells is necessary for the development of autoimmune CNS inflammation. This suggests that GM-CSF may have a pathogenic role in MS as well, and a clinical trial testing its blockade is ongoing. However, there have been few reports on GM-CSF production by T cells in MS. The objective of this study was to characterize GM-CSF production by T cells of MS patients and to determine the effect of IFN-ß therapy on its production. GM-CSF production by peripheral blood (PB) T cells and the effects of IFN-ß were characterized in samples of untreated and IFN-ß-treated MS patients versus healthy subjects. GM-CSF production by T cells in MS brain lesions was analyzed by immunofluorescence. Untreated MS patients had significantly greater numbers of GM-CSF(+)CD4(+) and CD8(+) T cells in PB compared with healthy controls and IFN-ß-treated MS patients. IFN-ß significantly suppressed GM-CSF production by T cells in vitro. A number of CD4(+) and CD8(+) T cells in MS brain lesions expressed GM-CSF. Elevated GM-CSF production by PB T cells in MS is indicative of aberrant hyperactivation of the immune system. Given its essential role in animal models, abundant GM-CSF production at the sites of CNS inflammation suggests that GM-CSF contributes to MS pathogenesis. Our findings also reveal a potential mechanism of IFN-ß therapy, namely suppression of GM-CSF production. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1403243 |
| Journal | The Journal of Immunology |
| Issue Number | 11 |
| Volume Number | 194 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2015-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cd4-positive T-lymphocytes Immunology Cd8-positive T-lymphocytes Granulocyte-macrophage Colony-stimulating Factor Biosynthesis Interferon-beta Therapeutic Use Multiple Sclerosis Drug Therapy Brain Cytology Pathology Inflammation Interferon-gamma Lymphocyte Activation Research Support, N.i.h., Extramural Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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