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Several recent studies have documented that signaling can be fundamentally different in vivo and in vitro. However, studies of signaling and cytokine production by macrophages are often conducted in vitro, without confirmation in vivo. In addition, the direct effects of drugs and chemicals, including ethanol, on these processes are also often investigated in vitro. The purpose of the present study...
Ethanol suppresses innate resistance to a variety of microbes, and findings of studies from both our laboratory and other laboratories indicate suppression of responses is mediated through two Toll-like receptors (TLRs): TLR3 and TLR4. In this article, we review recent findings from studies in our laboratory, indicating that ethanol also suppresses responses mediated through other TLRs. Considering...
Toll-like receptors (TLRs) recognize molecular patterns associated with pathogens and initiate various mechanisms that are critical in innate resistance to infection. It has been reported that acute administration of ethanol suppresses responses mediated through TLR3 and TLR4. However, it is not known whether this is also true for other TLRs. Ligands for TLR2/TLR6 (zymosan A), TLR5 (bacterial flagellin),...
Polyinosinic polycytidylic acid (poly I:C) is an analog of double stranded RNA, which is a common replication intermediate for many viruses. It acts through a toll-like receptor (TLR3) to induce a group of cytokines that can mediate host resistance to viruses and some cancers. The effect of ethanol (EtOH) on induction of this set of cytokines has not been determined. Mice were treated with a single...
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