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首页> 外文期刊>Journal of applied toxicology >Pyrazinamide induced hepatic injury in rats through inhibiting the PPAR alpha pathway
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Pyrazinamide induced hepatic injury in rats through inhibiting the PPAR alpha pathway

机译:吡嗪酰胺通过抑制PPARα途径引起大鼠肝损伤

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摘要

Pyrazinamide (PZA) causes serious hepatotoxicity, but little is known about the exact mechanism by which PZA induced liver injury. The peroxisome proliferator-activated receptors alpha (PPAR) is highly expressed in the liver and modulates the intracellular lipidmetabolism. So far, the role of PPAR in the hepatotoxicity of PZA is unknown. In the present study, we described the hepatotoxic effects of PZA and the role of PPAR and its target genes in the downstream pathway including L-Fabp, Lpl, Cpt-1b, Acaa1, Apo-A1 and Me1 in this process. We found PZA induced the liver lipid metabolism disorder and PPAR expressionwas down-regulated which had a significant inverse correlation with liver injury degree. These changeswere ameliorated by fenofibrate, the co-treatment that acts as a PPAR agonist. In contrast, short-termstarvation significantly aggravated the severity of PZA-induced liver injury. In conclusion, this study demonstrated the critical role played by PPAR in PZA-induced hepatotoxicity and provided a better understanding of the molecular mechanisms underlying PZA-induced liver injury. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译:吡嗪酰胺(PZA)会引起严重的肝毒性,但对PZA诱导肝损伤的确切机制知之甚少。过氧化物酶体增殖物激活受体α(PPAR)在肝脏中高表达并调节细胞内脂质代谢。到目前为止,PPAR在PZA肝毒性中的作用尚不清楚。在本研究中,我们描述了PZA的肝毒性作用以及PPAR及其靶基因在下游途径(包括L-Fabp,Lpl,Cpt-1b,Acaa1,Apo-A1和Me1)中的作用。我们发现PZA诱导了肝脂质代谢紊乱,PPAR的表达被下调,与肝损伤程度呈负相关。非诺贝特(作为PPAR激动剂的共同治疗)可改善这些变化。相反,短期饥饿明显加重了PZA诱导的肝损伤的严重性。总之,这项研究证明了PPAR在PZA诱导的肝毒性中发挥的关键作用,并提供了对PZA诱导的肝损伤的分子机制的更好理解。版权所有(c)2016 John Wiley&Sons,Ltd.

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