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| 1 | Alcoholic hepatitis: The pivotal role of Kupffer cells显示文摘Kupffer cells play a central role in the pathogenesis of alcoholic hepatitis(AH). It is believed that alcohol increases the gut permeability that results in raised levels of serum endotoxins containing lipopolysaccharides(LPS). LPS binds to LPS-binding proteins and presents it to a membrane glycoprotein called CD14, which then activates Kupffer cells via a receptor called tolllike receptor 4. This endotoxin mediated activation of Kupffer cells plays an important role in the inflammatory process resulting in alcoholic hepatitis. There is no effective treatment for AH, although notable progress has been made over the last decade in understanding the underlying mechanism of alcoholic hepatitis. We specifically review the current research on the role of Kupffer cells in the pathogenesis of AH and the treatment strategies. We suggest that the imbalance between the pro-inflammatory and the anti-inflammatory process as well as the increased production of reactive oxygen species eventually lead to hepatocyte injury, the final event of alcoholic hepatitis. | Duminda B Suraweera Ashley N Weeratunga Robert W Hu Stephen J Pandol Richard Hu | 2015 | World Journal of Gastrointestinal Pathophysiology2015，6，4： | 3 |
| 2 | Anti-CD163-dexamethasone conjugate inhibits the acute phase response to lipopolysaccharide in rats显示文摘AIM: To study the effect of a new anti-CD163-dexamethasone conjugate targeting activated macrophages on the hepatic acute phase response in rats. METHODS: Wistar rats were injected intravenous with either the CD163 targeted dexamethasone-conjugate(0.02 mg/kg) or free dexamethasone(0.02 or 1 mg/kg) 24 h prior to lipopolysaccharide(LPS)(2.5 mg/kg intraperitoneal). We measured plasma concentrations of tumour necrosis factor-a(TNF-a) and interleukin 6(IL-6) 2 h post-LPS and liver m RNAs and serum concentrations of the rat acute phase protein a-2-macroglobulin(a-2-M) 24 h after LPS. Also, plasma concentrations of alanine aminotransferase and bilirubin were measured at termination of the study. Spleen weight served as an indicator of systemic steroid effects.RESULTS: The conjugate halved the a-2-M liver m RNA(3.3 ± 0.6 vs 6.8 ± 1.1, P < 0.01) and serum protein(201 ± 48 μg/mL vs 389 ± 67 μg/mL, P = 0.04) after LPS compared to low dose dexamethasone treated animals, while none of the free dexamethasone doses had an effect on liver m RNA or serum levels of a-2-M. Also, the conjugate reduced TNF-a(7208 ± 1977 pg/mL vs 21583 ± 7117 pg/mL, P = 0.03) and IL-6(15685 ± 3779 pg/mL vs 25715 ± 4036 pg/mL, P = 0.03) compared to the low dose dexamethasone. The high dose dexamethasone dose decreased the spleen weight(421 ± 11 mg vs 465 ± 12 mg, P < 0.05) compared to controls, an effect not seen in any other group.CONCLUSION: Low-dose anti-CD163-dexamethasone conjugate effectively decreased the hepatic acute phase response to LPS. This indicates an anti-inflammatory potential of the conjugate in vivo. | Karen Louise Thomsen Holger Jon Moller Jonas Heilskov Graversen Nils E Magnusson Soren K Moestrup Hendrik Vilstrup Henning Gronbaek | 2016 | World Journal of Hepatology2016，8，17： | 1 |
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