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核受体配体在胆汁淤积性肝病治疗中的应用

Nuclear receptor ligands in therapy of cholestatic liver disease.

作者信息

Sturm Ekkehard, Wagner Martin, Trauner Michael

机构信息

Children s Hospital, University of Tuebingen, Germany.

出版信息

Front Biosci (Landmark Ed). 2009 Jan 1;14(11):4299-325. doi: 10.2741/3529.

Abstract

Cholestasis is a clinical syndrome resulting from disturbed bile formation. The etiology includes different diseases ranging from genetic defects in hepatocellular bile formation to inflammatory diseases of the bile ducts. Many cholestatic diseases are progressive and ultimately fatal. Whatever the cause, cholestasis results in intrahepatic accumulation of cytotoxic bile acids which lead to liver injury reflected by disruption of hepatocellular integrity, inflammation, fibrosis, cirrhosis and increased risk for development of cancer. Determinants of bile secretion undergo an adaptive response during cholestasis aiming to minimize hepatic injury. This adaptation occurs by modification of transport and metabolism of bile acids and other organic solutes in liver, kidney and intestine. The underlying molecular mechanisms are mediated mainly at a transcriptional level by a complex network involving ligand-activated nuclear receptors. However, the adaptive response to accumulation of bile acids cannot fully prevent or repair liver injury in cholestasis. Therefore, novel therapeutic strategies have to be developed involving nuclear receptor ligands which may intensify the protection of the hepatobiliary system in cholestatic disease.

摘要

胆汁淤积是一种由胆汁生成紊乱导致的临床综合征。其病因包括从肝细胞胆汁生成的遗传缺陷到胆管炎症性疾病等不同疾病。许多胆汁淤积性疾病呈进行性发展,最终可导致死亡。无论病因如何,胆汁淤积都会导致细胞毒性胆汁酸在肝内蓄积,进而引起肝损伤,表现为肝细胞完整性破坏、炎症、纤维化、肝硬化以及患癌风险增加。胆汁分泌的决定因素在胆汁淤积期间会发生适应性反应,旨在将肝损伤降至最低。这种适应通过肝脏、肾脏和肠道中胆汁酸及其他有机溶质的转运和代谢改变来实现。其潜在分子机制主要在转录水平上由一个涉及配体激活核受体的复杂网络介导。然而,对胆汁酸蓄积的适应性反应无法完全预防或修复胆汁淤积中的肝损伤。因此,必须开发新的治疗策略,涉及核受体配体,这可能会增强对胆汁淤积性疾病中肝胆系统的保护。

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