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: 酒精性急性肝损伤小鼠模型中氧化应激信号的调节对肝脏的保护作用

Hepatoprotective Effects of : The Modulation of Oxidative Stress Signaling in a Mouse Model of Alcohol-Induced Acute Liver Injury.

作者信息

Liu Yange, Wang Juan, Li Lanzhou, Hu Wenji, Qu Yidi, Ding Yipei, Meng Lina, Teng Lirong, Wang Di

机构信息

School of Life Sciences, Jilin University, Changchun 130012, China.

School of Life Sciences, Jilin University, Changchun 130012, China; Zhuhai College of Jilin University, Jilin University, Zhuhai 519000, China.

出版信息

Oxid Med Cell Longev. 2017;2017:7841823. doi: 10.1155/2017/7841823. Epub 2017 Feb 27.

Abstract

In the present study, the components of (AC) mycelia were systematically analyzed. Subsequently, its hepatoprotective effects and the underlying mechanisms were explored using a mouse model of acute alcohol-induced liver injury. AC contained 25 types of fatty acid, 16 types of amino acid, 3 types of nucleotide, and 8 types of mineral. The hepatoprotective effects were observed after 2 weeks of AC treatment at doses of 75 mg/kg, 225 mg/kg, and 675 mg/kg in the mouse model. These effects were indicated by the changes in the levels of aspartate aminotransferase, alanine aminotransferase, several oxidation-related factors, and inflammatory cytokines in serum and/or liver samples. AC reduced the incidence rate of necrosis, inflammatory infiltration, fatty droplets formation, and cell apoptosis in liver detecting via histological and TUNEL assay. In addition, AC reduced the expression of cleaved caspase-3, -8, and -9 and the levels of phosphor-protein kinase B (Akt) and phosphor-nuclear factor-B (NF-B) in the liver samples. Collectively, AC-mediated hepatoprotective effects in a mouse model of acute alcohol-induced liver injury are the result of reduction in oxidative stress. This may be associated with Akt/NF-B signaling. These results provide valuable evidence to support the use of as a functional food and/or medicine.

摘要

在本研究中,对(AC)菌丝体的成分进行了系统分析。随后,使用急性酒精性肝损伤小鼠模型探讨了其保肝作用及潜在机制。AC含有25种脂肪酸、16种氨基酸、3种核苷酸和8种矿物质。在小鼠模型中,以75mg/kg、225mg/kg和675mg/kg的剂量给予AC治疗2周后观察到保肝作用。血清和/或肝脏样本中天冬氨酸转氨酶、丙氨酸转氨酶、几种氧化相关因子和炎性细胞因子水平的变化表明了这些作用。通过组织学和TUNEL分析检测发现,AC降低了肝脏中坏死、炎性浸润、脂肪滴形成和细胞凋亡的发生率。此外,AC降低了肝脏样本中裂解的半胱天冬酶-3、-8和-9的表达以及磷酸化蛋白激酶B(Akt)和磷酸化核因子-κB(NF-κB)的水平。总体而言,AC在急性酒精性肝损伤小鼠模型中介导的保肝作用是氧化应激降低的结果。这可能与Akt/NF-κB信号传导有关。这些结果为支持将AC用作功能性食品和/或药物提供了有价值的证据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8373/5350382/9ee3b3a7b7f6/OMCL2017-7841823.001.jpg

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