id author title date pages extension mime words sentences flesch summary cache txt cord-285538-3ah05ijf Halstead, Scott B. Chapter 19 Pathogenic Exploitation of Fc Activity 2014-12-31 .txt text/plain 7637 426 39 3, 4 While follow-up research in the 1960s suggested that this phenomenon resulted from the stabilization of MVEV by antibodies, 5 a different explanation emerged when sequential infections in humans with dengue viruses (DENVs) were shown to produce severe disease (dengue hemorrhagic fever, DHF). Unexpectedly, the incubation of Ross River virus (RRV) with diluted RRV antiserum resulted in enhanced infection in mouse macrophage cell lines and in primary human monocytes/macrophages via innate immune suppression involving reduced production of reactive nitrogen radicals via NOS2 and a downregulation of TNF-α and IFN-β production through abolished interferon regulatory factor 1 (IRF-1) and nuclear factor-κB gene expression. 43 Note has been made above of the possible role of different Fcγ receptors in mediating ADE in macrophages in leishmania mouse models and the interesting observation suggesting that ligation of FcγRIIB may affect the fate of large immune complexes during the immune clearance phase of dengue infections. ./cache/cord-285538-3ah05ijf.txt ./txt/cord-285538-3ah05ijf.txt