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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Aconitum carmichaelii protects against acetaminophen-induced hepatotoxicity via B-cell lymphoma-2 protein-mediated inhibition of mitochondrial dysfunction.
Environmental Toxicology and Pharmacology 2016 March
We previously reported the clinical profile of processed Aconitum carmichaelii (AC, Aconibal(®)), which included inhibition of cytochrome P450 (CYP) 2E1 activity in healthy male adults. CYP2E1 is recognized as the enzyme that initiates the cascade of events leading to acetaminophen (APAP)-induced toxicity. However, no studies have characterized its role in APAP-induced hepatic injury. Here, we investigated the protective effects of AC on APAP-induced hepatotoxicity via mitochondrial dysfunction. AC (5-500 μg/mL) significantly inhibited APAP-induced reduction of glutathione. In addition, AC decreased mitochondrial membrane potential (Δψm) and B-cell lymphoma 2 (Bcl-2)-associated X protein levels (% change 46.63) in mitochondria. Moreover, it increased Bcl-2 (% change 55.39) and cytochrome C levels (% change 38.33) in mitochondria, measured using immunofluorescence or a commercial kit. Furthermore, cell membrane integrity was preserved and nuclear fragmentation inhibited by AC. These results demonstrate that AC protects hepatocytes against APAP-induced toxicity by inhibiting mitochondrial dysfunction.
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