Abstract Title:

Hepatoprotective effect ofextract against methotrexate-induced hepatotoxicity via targeting STAT3/miRNA-21 axis.

Abstract Source:

Drug Chem Toxicol. 2020 Dec 21:1-9. Epub 2020 Dec 21. PMID: 33349067

Abstract Author(s):

Iman O Sherif, Nora H Al-Shaalan

Article Affiliation:

Iman O Sherif


The usage of the chemotherapeutic agent methotrexate (MTX) was associated with hepatotoxicity that minimized its clinical use. Theextract (GBE) was used before to alleviate the MTX-induced liver injury through its antioxidant activity. This work was carried out to elucidate other molecular hepatoprotective mechanisms of GBE via examining the IL-6/STAT3 pathway in addition to the miRNA-21 expression in hepatic tissue. Sprague Dawley rats were allocated into four groups: normal control (NC);extract control (GBEC); methotrexate (MTX); andextract and methotrexate (GBE + MTX) group. GBE was administered orally 60 mg/kg/day for 10 days while MTX was intraperitoneally injected with 20 mg/kg on day 5. After the experiment, the serum was separated for liver enzyme determination while liver tissues were collected for biochemical and histopathological examinations. MTX induced marked elevation in the liver enzymes, hepatic IL-6, and HGF mRNA expressions, phospho-STAT3/STAT3 ratio, and miRNA-21 hepatic expression when compared with the NC group. Liver injury was observed histopathologically after MTX. The GBE administration reversed these biochemical alterations and improved liver histopathology. The hepatoprotective mechanism of GBE against MTX-induced hepatotoxicity via the modulation of the IL-6/STAT3 signaling pathway and the downregulation of the miRNA-21 hepatic expression was reported for the first time.

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