Abstract
The hepatoprotective effects of indole-3-carbinol (I3C), one of the byproducts of the breakdown of glucosinolate glucobrassicin, were examined in mice with carbon tetrachloride (CCl4)-induced hepatotoxicity. I3C was administered orally at a dose of 50 or 100 mg/kg to C57BL/6 mice for 3 consecutive days with or without a subsequent single oral administration of CCl4 (1.5 mL/kg). I3C treatment significantly suppressed the increases in alanine aminotransferase and aspartate aminotransferase levels in the sera of CCl4-injured mice. In addition, I3C treatment markedly suppressed CCl4-induced hepatic inflammation, by suppressing the activation of macrophages and Kupffer cells in the liver. To examine the effects of I3C on lipid accumulation, 3T3-L1 pre-adipocytes were differentiated with I3C or vehicle control. I3C treatment reduced lipid accumulation, which appeared to be associated with the downregulation of adipogenic transcription factors, such as CCAAT/enhancer-binding protein α, peroxisome proliferator-activated receptor γ, and lipid accumulation-related genes, including adipocyte protein-2. Taken together, the present study suggest that I3C treatment reduces hepatocyte death and lipid accumulation in hepatocytes in CCl4-induced hepatic injury with concurrent suppression of macrophages/Kupffer cells, which was further evidenced by I3C-treated pre-adipocytes in vitro, through downregulation of lipid metabolism.
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Acknowledgements
This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through Agri-Bio industry Technology Development Program, funded by Ministry of Agriculture, Food and Rural Affairs (MAFRA) (Grant number: 316006-05-1-HD040).
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All experiments that involved animal use were conducted in accordance with the Jeju National University Guidelines for the Care and Use of Laboratory Animals (Permission NO. 2016-0040).
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Meejung Ahn has no conflict of interest. Jeongtae Kim has no conflict of interest. Dawun Yang has no conflict of interest. Ji-Yeon Chun has no conflict of interest. Gi Ok Kim has no conflict of interest. Taekyun Shin has no conflict of interest.
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Ahn, M., Kim, J., Yang, D. et al. Indole-3-carbinol alleviates carbon tetrachloride-induced liver injury by inhibiting inflammatory response and regulating lipid metabolism. ADV TRADIT MED (ADTM) 21, 371–378 (2021). https://doi.org/10.1007/s13596-020-00452-8
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DOI: https://doi.org/10.1007/s13596-020-00452-8