T-cell-mediated cytotoxicity toward platelets in chronic idiopathic thrombocytopenic purpura.
basic_science · Level V
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Abstract
Chronic idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder that is characterized by increased platelet destruction and is believed to be autoantibody mediated. In this study, CD3+ T cells from ITP patients had increased expression of genes involved in cell-mediated cytotoxicity. In addition, cytotoxic cell-mediated lysis of autologous platelets was shown in active ITP. Our data suggest that T-cell-mediated cytotoxicity is an alternative mechanism for platelet destruction in ITP.
Medical subject headings
- Blood Platelets
- Cytotoxicity, Immunologic
- Purpura, Thrombocytopenic, Idiopathic
- T-Lymphocytes, Cytotoxic