Casey Carol A, McVicker Benita L, Donohue Terrence M, McFarland Melinda A, Wiegert Robert L, Nanji Amin A
Liver Study Unit, Department of Internal Medicine and Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha NE 68198, USA.
J Appl Physiol (1985). 2004 Jan;96(1):76-80. doi: 10.1152/japplphysiol.00375.2003. Epub 2003 Aug 29.
It has been demonstrated that the oral administration of ethanol (Lieber-DeCarli liquid diet) to rats results in a decreased expression and content of the asialoglycoprotein receptor (ASGP-R) in the resultant fatty liver. In the present study, we wanted to determine whether the extent of impaired receptor content was correlated with the severity of liver pathology by using the intragastric feeding model. When ASGP-R protein and mRNA levels were measured in animals infused with ethanol or dextrose in the presence of fish oil (FO) or medium-chain triglyceride as the source of fat, more significant impairments to the ASGP-R were observed in the FO-ethanol group compared with the medium-chain triglyceride-ethanol group. Furthermore, only the FO-ethanol group showed pathological liver changes. These results demonstrate that a correlation exists between the progression of alcohol-associated liver injury, as defined by the severity of liver pathology, and an ethanol-induced decline in ASGP-R content.
已证实,给大鼠口服乙醇(Lieber-DeCarli液体饮食)会导致所形成的脂肪肝中去唾液酸糖蛋白受体(ASGP-R)的表达和含量降低。在本研究中,我们想通过使用灌胃喂养模型来确定受体含量受损的程度是否与肝脏病理严重程度相关。当在以鱼油(FO)或中链甘油三酯作为脂肪来源的情况下,对输注乙醇或葡萄糖的动物测量ASGP-R蛋白和mRNA水平时,与中链甘油三酯-乙醇组相比,FO-乙醇组中ASGP-R受到的损害更显著。此外,只有FO-乙醇组出现了肝脏病理变化。这些结果表明,由肝脏病理严重程度所定义的酒精相关性肝损伤进展与乙醇诱导的ASGP-R含量下降之间存在关联。