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Full-Text Articles in Immunology and Infectious Disease

Granulocyte Colony-Stimulating Factor: Its Role In Gut-Homing Macrophage Generation And Colitis, And Production By Probiotics, Shahab Meshkibaf May 2015

Granulocyte Colony-Stimulating Factor: Its Role In Gut-Homing Macrophage Generation And Colitis, And Production By Probiotics, Shahab Meshkibaf

Electronic Thesis and Dissertation Repository

The pleiotropic cytokine granulocyte-colony stimulatory factor (G-CSF) is mainly required for the generation of neutrophils, but its role in macrophage generation has also been reported. In addition, G-CSF is effective for the down-regulation of inflammatory cytokines and ameliorating gut disorders, such as colitis. However, the G-CSF function in macrophage generation and gut immunity remains unclear. The first focus of this thesis was to assess the role of G-CSF in macrophage generation and its contribution to gut immunity. G-CSF was found to promote the generation of Gr-1high/F4/80+ macrophages in macrophage (M)-CSF-treated bone marrow cells, most likely through suppressing cell death. Gr-1high …


Critical Roles For Interleukin 1 And Tumor Necrosis Factor Alpha In Antibody-Induced Arthritis, Hong Ji, Allison Pettit, Koichiro Ohmura, Adriana Ortiz-Lopez, Veronique Duchatelle, Claude Degott, Ellen M. Gravallese, Diane Mathis, Christophe Benoist Apr 2015

Critical Roles For Interleukin 1 And Tumor Necrosis Factor Alpha In Antibody-Induced Arthritis, Hong Ji, Allison Pettit, Koichiro Ohmura, Adriana Ortiz-Lopez, Veronique Duchatelle, Claude Degott, Ellen M. Gravallese, Diane Mathis, Christophe Benoist

Ellen M. Gravallese

In spontaneous inflammatory arthritis of K/BxN T cell receptor transgenic mice, the effector phase of the disease is provoked by binding of immunoglobulins (Igs) to joint surfaces. Inflammatory cytokines are known to be involved in human inflammatory arthritis, in particular rheumatoid arthritis, although, overall, the pathogenetic mechanisms of the human affliction remain unclear. To explore the analogy between the K/BxN model and human patients, we assessed the role and relative importance of inflammatory cytokines in K/BxN joint inflammation by transferring arthritogenic serum into a panel of genetically deficient recipients. Interleukin (IL)-1 proved absolutely necessary. Tumor necrosis factor (TNF)-alpha was also …