نتایج جستجو برای: plasmacytoid dendritic cells
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Blastic plasmacytoid dendritic cell neoplasm (BPDCN) derived from plasmacytoid dendritic cell precursors is a very rare, and characterized by cutaneous and bone marrow involvement and leukemic spread. The neoplasm presents with an aggressive behavior, and the clinical findings include cytopenia, particularly thrombocytopenia. The tumor cells are negative for antigens of T- and B- cell lines. Ho...
Increased concentrations of DNA-containing immune complexes in the serum are associated with systemic autoimmune diseases such as lupus. Stimulation of Toll-like receptor 9 (TLR9) by DNA is important in the activation of plasmacytoid dendritic cells and B cells. Here we show that HMGB1, a nuclear DNA-binding protein released from necrotic cells, was an essential component of DNA-containing immu...
Bone marrow stromal Ag 2 (BST2) is a transmembrane protein that prevents virus release from infected cells. It was also reported that BST2 inhibits type I IFN production by plasmacytoid dendritic cells. To determine BST2 impact on antiviral responses in vivo, we generated BST2(-/-) mice. Following infection with a murine retrovirus, BST2(-/-) mice had slightly elevated viral loads; however, inf...
BACKGROUND Dendritic cells control pulmonary immune reactions. Characteristics of dendritic cells in human bronchoalveolar lavage fluid (BALF) after allergen challenge are unknown. METHODS 7 patients with allergic asthma (median 23 years, range 19-25 years) underwent segmental challenge and were lavaged 10 min and 24 h after challenge. Dendritic cell subsets and surface markers in BALF and in...
Background: Dendritic cells control pulmonary immune reactions. Characteristics of dendritic cells in human bronchoalveolar lavage fluid (BALF) after allergen challenge are unknown. Methods: 7 patients with allergic asthma (median 23 years, range 19–25 years) underwent segmental challenge and were lavaged 10 min and 24 h after challenge. Dendritic cell subsets and surface markers in BALF and in...
Dendritic cells are potent antigen-presenting cells endowed with the unique ability to prime T-cell responses. To present foreign antigens to na ive T cells, dendritic cells must migrate from inflamed or injured peripheral tissues to the closest draining lymph nodes through afferent lymphatic vessels. In addition, conventional dendritic cells, plasmacytoid dendritic cells and monocytes enter ly...
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a clinically aggressive tumor derived from the precursor of plasmacytoid dendritic cells. We describe two cases of BPDCN. In case 1, the patient presented with multiple erythema on the trunk and arms. Histopathology of a skin biopsy specimen and immunohistochemistry demonstrated that the tumor cells were small to medium-sized with a blasto...
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