Localization of the alpha-chemokine SDF-1 and its receptor CXCR4 in idiopathic inflammatory myopathies. 2004

Boel De Paepe, and J Michael Schröder, and Jean-Jacques Martin, and Gabor Z Racz, and Jan L De Bleecker
Department of Neurology, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium.

We studied the distribution of stromal cell-derived factor 1 isoforms alpha and beta, and their receptor CXCR4, in polymyositis, sporadic inclusion body myositis and dermatomyositis using in situ hybridization, immunohistochemistry, immunofluorescence and Western blotting. In control muscle, polymyositis and sporadic inclusion body myositis, stromal cell-derived factor-1alpha expression was noted in muscle fibers, while stromal cell-derived factor-1beta and CXCR4 were predominantly localized to capillaries and arterioles. In dermatomyositis, stromal cell-derived factor-1beta immunoreactivity of blood vessels was focally increased. The vast majority of inflammatory cells in idiopathic inflammatory myopathies were CXCR4 positive. A subset of helper T-cells and macrophages expressed stromal cell-derived factor-1alpha, while only rare inflammatory cells expressed stromal cell-derived factor-1beta. A significant increase of stromal cell-derived factor-1alpha and CXCR4 was observed in protein extracts of idiopathic inflammatory myopathies in comparison with normal controls. The abundance of both CXCR4 and its ligand stromal cell-derived factor-1 implicates their interaction in the pathogenesis of idiopathic inflammatory myopathies and identifies these proteins as possible targets for selective immune therapy.

UI MeSH Term Description Entries
D008264 Macrophages The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.) Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D009000 Monocytes Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles. Monocyte
D009220 Myositis Inflammation of a muscle or muscle tissue. Inflammatory Myopathy,Myositis, Focal,Myositis, Infectious,Idiopathic Inflammatory Myopathies,Idiopathic Inflammatory Myopathy,Idiopathic Inflammatory Myositis,Infectious Myositis,Inflammatory Muscle Diseases,Inflammatory Myopathies, Idiopathic,Inflammatory Myopathy, Idiopathic,Muscle Diseases, Inflammatory,Myopathies, Idiopathic Inflammatory,Myopathy, Inflammatory,Myositis, Proliferative,Focal Myositides,Focal Myositis,Infectious Myositides,Inflammatory Muscle Disease,Inflammatory Myopathies,Muscle Disease, Inflammatory,Myopathies, Inflammatory,Myopathy, Idiopathic Inflammatory,Myositides,Myositides, Focal,Myositides, Infectious,Myositides, Proliferative,Proliferative Myositides,Proliferative Myositis
D001808 Blood Vessels Any of the tubular vessels conveying the blood (arteries, arterioles, capillaries, venules, and veins). Blood Vessel,Vessel, Blood,Vessels, Blood
D003882 Dermatomyositis A subacute or chronic inflammatory disease of muscle and skin, marked by proximal muscle weakness and a characteristic skin rash. The illness occurs with approximately equal frequency in children and adults. The skin lesions usually take the form of a purplish rash (or less often an exfoliative dermatitis) involving the nose, cheeks, forehead, upper trunk, and arms. The disease is associated with a complement mediated intramuscular microangiopathy, leading to loss of capillaries, muscle ischemia, muscle-fiber necrosis, and perifascicular atrophy. The childhood form of this disease tends to evolve into a systemic vasculitis. Dermatomyositis may occur in association with malignant neoplasms. (From Adams et al., Principles of Neurology, 6th ed, pp1405-6) Polymyositis-Dermatomyositis,Dermatomyositis, Adult Type,Dermatomyositis, Childhood Type,Dermatopolymyositis,Juvenile Dermatomyositis,Juvenile Myositis,Adult Type Dermatomyositis,Childhood Type Dermatomyositis,Dermatomyositis, Juvenile,Myositis, Juvenile,Polymyositis Dermatomyositis
D005455 Fluorescent Antibody Technique Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (FLUORESCENT ANTIBODY TECHNIQUE, DIRECT) or an indirect method, by formation of antigen-antibody complex which is then labeled with fluorescein-conjugated anti-immunoglobulin antibody (FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT). The tissue is then examined by fluorescence microscopy. Antinuclear Antibody Test, Fluorescent,Coon's Technique,Fluorescent Antinuclear Antibody Test,Fluorescent Protein Tracing,Immunofluorescence Technique,Coon's Technic,Fluorescent Antibody Technic,Immunofluorescence,Immunofluorescence Technic,Antibody Technic, Fluorescent,Antibody Technics, Fluorescent,Antibody Technique, Fluorescent,Antibody Techniques, Fluorescent,Coon Technic,Coon Technique,Coons Technic,Coons Technique,Fluorescent Antibody Technics,Fluorescent Antibody Techniques,Fluorescent Protein Tracings,Immunofluorescence Technics,Immunofluorescence Techniques,Protein Tracing, Fluorescent,Protein Tracings, Fluorescent,Technic, Coon's,Technic, Fluorescent Antibody,Technic, Immunofluorescence,Technics, Fluorescent Antibody,Technics, Immunofluorescence,Technique, Coon's,Technique, Fluorescent Antibody,Technique, Immunofluorescence,Techniques, Fluorescent Antibody,Techniques, Immunofluorescence,Tracing, Fluorescent Protein,Tracings, Fluorescent Protein
D006377 T-Lymphocytes, Helper-Inducer Subpopulation of CD4+ lymphocytes that cooperate with other lymphocytes (either T or B) to initiate a variety of immune functions. For example, helper-inducer T-cells cooperate with B-cells to produce antibodies to thymus-dependent antigens and with other subpopulations of T-cells to initiate a variety of cell-mediated immune functions. Helper Cell,Helper Cells,Helper T Cell,Helper-Inducer T-Lymphocytes,Inducer Cell,Inducer Cells,T-Cells, Helper-Inducer,T-Lymphocytes, Helper,T-Lymphocytes, Inducer,Helper T-Cells,Cell, Helper T,Cells, Helper T,Helper Inducer T Lymphocytes,Helper T Cells,Helper T-Cell,Helper T-Lymphocyte,Helper T-Lymphocytes,Helper-Inducer T-Cell,Helper-Inducer T-Cells,Helper-Inducer T-Lymphocyte,Inducer T-Lymphocyte,Inducer T-Lymphocytes,T Cell, Helper,T Cells, Helper,T Cells, Helper Inducer,T Lymphocytes, Helper,T Lymphocytes, Helper Inducer,T Lymphocytes, Inducer,T-Cell, Helper,T-Cell, Helper-Inducer,T-Cells, Helper,T-Lymphocyte, Helper,T-Lymphocyte, Helper-Inducer,T-Lymphocyte, Inducer
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015153 Blotting, Western Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes. Immunoblotting, Western,Western Blotting,Western Immunoblotting,Blot, Western,Immunoblot, Western,Western Blot,Western Immunoblot,Blots, Western,Blottings, Western,Immunoblots, Western,Immunoblottings, Western,Western Blots,Western Blottings,Western Immunoblots,Western Immunoblottings
D015703 Antigens, CD Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation. CD Antigen,Cluster of Differentiation Antigen,Cluster of Differentiation Marker,Differentiation Antigens, Leukocyte, Human,Leukocyte Differentiation Antigens, Human,Cluster of Differentiation Antigens,Cluster of Differentiation Markers,Antigen Cluster, Differentiation,Antigen, CD,CD Antigens,Differentiation Antigen Cluster,Differentiation Marker Cluster,Marker Cluster, Differentiation

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