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- W2103741698 abstract "Gut-derived endotoxins (lipopolysaccharide, LPS) complexed to LPS-binding protein (LBP) activate liver Kupffer cells via their CD14 receptor. Pro-inflammatory cytokines are released and this is postulated to promote liver injury. We previously demonstrated enhanced expression of CD14 endotoxin receptor after 2 weeks of alcohol administration. A similar result, based on 6 weeks of ethanol treatment, was recently reported and suggested to correlate with alcohol-induced liver injury. To establish whether this occurs prior to or after the initiation of damage, we investigated the temporal effect of continuous ethanol exposure on the expression of CD14 and the associated LBP. In addition, we studied the effect of treatment with gadolinium chloride (GdCl3) that inactivates Kupffer cells and alleviates alcohol-induced liver damage. The amount of CD14 and LBP mRNA, as determined by reverse transcriptase–polymerase chain reaction (RT–PCR), was unchanged 4–8 h after intragastric ethanol administration. However, after 24–48 h of repeated ethanol administration, CD14 and LBP mRNA both increased significantly and reached a level similar to that observed after 6 weeks of ethanol exposure by liquid diet. Immunostaining experiments with ED2 antibody demonstrated that GdCl3 efficiently inactivated Kupffer cells. However, there was no concomitant reduction in the expression of CD14 mRNA, suggesting that compensatory infiltration by ED2-negative, but CD14-positive, macrophages had occurred. Our results demonstrate that soon after the initiation of ethanol exposure, i.e. within 24–48 h, the hepatic expression of both the CD14 receptor and LBP is increased. This suggests that these increases could contribute to the initiation of alcoholic damage rather than being a consequence of the injury." @default.
- W2103741698 created "2016-06-24" @default.
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- W2103741698 date "1999-05-01" @default.
- W2103741698 modified "2023-10-15" @default.
- W2103741698 title "SHORT-TERM ETHANOL EXPOSURE INCREASES THE EXPRESSION OF KUPFFER CELL CD14 RECEPTOR AND LIPOPOLYSACCHARIDE BINDING PROTEIN IN RAT LIVER" @default.
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- W2103741698 doi "https://doi.org/10.1093/alcalc/34.3.311" @default.
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