Mechanism of the Protective Effects of Sumac Gall Extract and Gallic Acid on the Progression of CCl4-induced Acute Liver Injury in Rats

To examine the mechanism of the preventive effect of tannins on the progression of carbon tetrachloride (CCl4)-induced acute liver injury in rats, sumac gall (SG) extract and gallic acid (GA) were used as substitutes for crude tannins, because SG is a kind of Chinese traditional medicinal herb containing large amounts of various tannins, and GA is one of the major constituents of SG. The protective effect of oral (p.o.) and intraperitoneal (i.p.) administration of each substance on progression of CCl4-induced hepatitis was investigated in rats. Speculating that the superoxide dismutase (SOD)-like activities (O2 radical-scavenging activities) and/or protective effects of these substances on cell membranes might play a key role in the mechanism opposing the progression of CCl4-induced hepatitis, the O2 radical-scavenging activities in liver cells and serum in rats were monitored. Both substances significantly prevented the progression of acute liver injury with both p.o. and i.p. administration. These findings suggest that the mechanism for this prevention might be due mainly to the protective effect of these substances on cell membranes rather than O2 radical-scavenging activities.

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Lemon Balm and Dandelion Leaf Extracts Synergistically Protect against Carbon Tetrachloride-Induced Acute Liver Injury in Mice

Applied Sciences ◽

10.3390/app11010390 ◽

2021 ◽

Vol 11 (1) ◽

pp. 390

Author(s):

Beom-Rak Choi ◽

Il-Je Cho ◽

Su-Jin Jung ◽

Jae-Kwang Kim ◽

Dae-Geon Lee ◽

...

Keyword(s):

Carbon Tetrachloride ◽

Liver Injury ◽

Acute Liver Injury ◽

Antioxidant Activities ◽

Body Weight Gain ◽

Histopathological Analysis ◽

Related Factor ◽

Mrna Levels ◽

Protective Effects ◽

Lemon Balm

Lemon balm and dandelion are commonly used medicinal herbs exhibiting numerous pharmacological activities that are beneficial for human health. In this study, we explored the protective effects of a 2:1 (w/w) mixture of lemon balm and dandelion extracts (MLD) on carbon tetrachloride (CCl4)-induced acute liver injury in mice. CCl4 (0.5 mL/kg; i.p.) injection inhibited body weight gain and increased relative liver weight. Pre-administration of MLD (50–200 mg/kg) for 7 days prevented these CCl4-mediated changes. In addition, histopathological analysis revealed that MLD synergistically alleviated CCl4-mediated hepatocyte degeneration and infiltration of inflammatory cells. MLD decreased serum aspartate aminotransferase and alanine transferase activities and reduced the number of liver cells that stained positive for cleaved caspase-3 and cleaved poly(ADP-ribose) polymerase, suggesting that MLD protects against CCl4-induced hepatic damage via the inhibition of apoptosis. Moreover, MLD attenuated CCl4-mediated lipid peroxidation and protein nitrosylation by restoring impaired hepatic nuclear factor erythroid 2-related factor 2 mRNA levels and its dependent antioxidant activities. Furthermore, MLD synergistically decreased mRNA and protein levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6 in the liver. Together, these results suggest that MLD has potential for preventing acute liver injury by inhibiting apoptosis, oxidative stress, and inflammation.

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Protective effects of salecan against carbon tetrachloride-induced acute liver injury in mice

Journal of Applied Toxicology ◽

10.1002/jat.1694 ◽

2011 ◽

Vol 32 (10) ◽

pp. 796-803 ◽

Cited By ~ 17

Author(s):

Peng Chen ◽

Zhongqiu Wang ◽

Liyan Zeng ◽

Shiming Wang ◽

Wei Dong ◽

...

Keyword(s):

Carbon Tetrachloride ◽

Liver Injury ◽

Acute Liver Injury ◽

Protective Effects

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Protective Effect of Eckol against Acute Hepatic Injury Induced by Carbon Tetrachloride in Mice

Marine Drugs ◽

10.3390/md16090300 ◽

2018 ◽

Vol 16 (9) ◽

pp. 300 ◽

Cited By ~ 8

Author(s):

Shulan Li ◽

Juan Liu ◽

Mengya Zhang ◽

Yuan Chen ◽

Tianxing Zhu ◽

...

Keyword(s):

Carbon Tetrachloride ◽

Liver Injury ◽

Protective Effect ◽

Acute Liver Injury ◽

Treated Group ◽

Terminal Deoxynucleotidyl Transferase ◽

Enhanced Expression ◽

Pre Treatment

Several in vitro studies have shown the potential hepatoprotective properties of eckol, a natural phlorotannin derived from the brown alga. However, the in vivo hepatoprotective potential of eckol has not been determined. In this study, we performed an in vivo study to investigate the protective effect of eckol and its possible mechanisms on the carbon tetrachloride (CCl4)-induced acute liver injury model in mice. Results revealed that eckol pre-treatment at the dose of 0.5 and 1.0 mg/kg/day for 7 days significantly suppressed the CCl4-induced increases of alanine transaminase (ALT) and aspartate aminotransferase (AST) levels in serum and meliorated morphological liver injury. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling (TUNEL) analysis showed that the number of positive apoptotic hepatocytes in the eckol-treated group was lower than that in the CCl4 model group. Western blotting analysis also demonstrated the enhanced expression of bcl-2 and suppressed expression of cleaved caspase-3 by eckol. The CCl4-induced oxidative stress in liver was significantly ameliorated by eckol, which was characterized by reduced malondialdehyde (MDA) formations, and enhanced superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) activities and glutathione (GSH) content. Moreover, the CCl4-induced elevations of pro-inflammatory cytokines tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6 were markedly suppressed in the eckol-treated group. However, eckol enhanced the level of IL-10, a potent anti-inflammatory cytokine, and recruited CD11c+ dendritic cells into the liver tissues of CCl4-treated mice. These results indicated that eckol has the protective effect on CCl4-induced acute liver injury via multiple mechanisms including anti-apoptosis, anti-oxidation, anti-inflammation and immune regulation.

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