کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3341285 | 1214196 | 2016 | 6 صفحه PDF | دانلود رایگان |

Common variable immunodeficiency (CVID) is a heterogeneous group of diseases, characterized by primary hypogammaglobulinemia. B and T cell abnormalities have been described in CVID. Typical clinical features of CVID are recurrent airway infections; lymphoproliferative, autoinflammatory, or neoplastic disorders; and autoimmune diseases among which autoimmune thrombocytopenia (ITP) is the most common. The coexistence of immunodeficiency and autoimmunity appears paradoxical, since one represents a hypoimmune state and the other a hyperimmune state. Considering both innate and adaptive immune response abnormalities in CVID, it is easier to understand the mechanisms that lead to a breakdown of self-tolerance. CD21low B cells derive from mature B cells that have undergone chronic immune stimulation; they are increased in CVID patients. The expansion of CD21low B cells is also observed in certain autoimmune diseases. We have studied CD21low B cells in patients with CVID, CVID, and ITP and with ITP only. We observed a statistically significant increase in the CD21low population in the three pathological groups. Moreover, we found statistical differences between the two groups of CVID patients: patients with ITP had a higher percentage of CD21low cells. Our data suggest that CD21low cells are related to autoimmunity and may represent a link between infection and autoimmunity.
Journal: Autoimmunity Reviews - Volume 15, Issue 9, September 2016, Pages 877–882