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By Hermenio Lima McMaster university
Kihong Lim, Young-Min Hyun, Kris Lambert-Emo, Tara Capece, Seyeon Bae, Richard Miller, David J Topham, Minsoo Kim
During viral infections, chemokines guide activated effector T cells to infection sites. However, the cells responsible for producing these chemokines and how such chemokines recruit T cells are unknown. Here, we show that the early recruitment of neutrophils into influenza-infected trachea is essential for CD8(+) T cell-mediated immune protection in mice. We observed that migrating neutrophils leave behind long-lasting trails that are enriched in the chemokine CXCL12. Experiments with granulocyte-specific CXCL12 conditionally depleted mice and a CXCR4 antagonist revealed that CXCL12 derived from neutrophil trails is critical for virus-specific CD8(+) T cell recruitment and effector functions...
September 4, 2015: Science
Jonathan P Zehr
No abstract text is available yet for this article.
September 11, 2015: Science
John W Schoggins
No abstract text is available yet for this article.
September 11, 2015: Science
Peggy A Wu, Robert S Stern
No abstract text is available yet for this article.
April 2015: JAMA Dermatology
Aaron S Kesselheim, Christopher T Robertson, Jessica A Myers, Susannah L Rose, Victoria Gillet, Kathryn M Ross, Robert J Glynn, Steven Joffe, Jerry Avorn
BACKGROUND: The effects of clinical-trial funding on the interpretation of trial results are poorly understood. We examined how such support affects physicians' reactions to trials with a high, medium, or low level of methodologic rigor. METHODS: We presented 503 board-certified internists with abstracts that we designed describing clinical trials of three hypothetical drugs. The trials had high, medium, or low methodologic rigor, and each report included one of three support disclosures: funding from a pharmaceutical company, NIH funding, or none...
September 20, 2012: New England Journal of Medicine
Thomas F Hiemstra, Michael Walsh, Alfred Mahr, Caroline O Savage, Kirsten de Groot, Lorraine Harper, Thomas Hauser, Irmgard Neumann, Vladimir Tesar, Karl-Martin Wissing, Christian Pagnoux, Wilhelm Schmitt, David R W Jayne
CONTEXT: Current remission maintenance therapies for antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) are limited by partial efficacy and toxicity. OBJECTIVE: To compare the effects of mycophenolate mofetil with azathioprine on the prevention of relapses in patients with AAV. DESIGN, SETTING, AND PARTICIPANTS: Open-label randomized controlled trial, International Mycophenolate Mofetil Protocol to Reduce Outbreaks of Vasculitides (IMPROVE), to test the hypothesis that mycophenolate mofetil is more effective than azathioprine for preventing relapses in AAV...
December 1, 2010: JAMA: the Journal of the American Medical Association
Shradha Agarwal, Charlotte Cunningham-Rundles
Common variable immunodeficiency (CVID) is the most common clinically significant primary immune defect. Although the hallmark of CVID is hypogammaglobulinemia, the intrinsic dysregulation of the immune system leads to defective T-cell activation and proliferation, as well as dendritic cell and cytokine defects. Although 70% to 80% of patients have had recurrent sinopulmonary infections, autoimmunity and inflammatory complications are also common. The most common autoimmune conditions are immune thrombocytopenic purpura and hemolytic anemia, but other autoimmune complications arise, including rheumatoid arthritis, pernicious anemia, primary biliary cirrhosis, thyroiditis, sicca syndrome, systemic lupus, and inflammatory bowel disease...
September 2009: Current Allergy and Asthma Reports
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