Kaempferol suppresses acetaminophen-induced liver damage by upregulation/activation of SIRT1
Autor: | Nora Abdullah AlFaris, Mona Nasser BinMowyna |
---|---|
Rok vydání: | 2021 |
Předmět: |
Male
Antioxidant medicine.medical_treatment Flavonoid Anti-Inflammatory Agents Pharmaceutical Science Pharmacology medicine.disease_cause 030226 pharmacology & pharmacy 01 natural sciences Antioxidants chemistry.chemical_compound 0302 clinical medicine Sirtuin 1 Drug Discovery apap oxidative stress chemistry.chemical_classification digestive oral and skin physiology apoptosis food and beverages General Medicine Up-Regulation Molecular Medicine Chemical and Drug Induced Liver Injury hepatic medicine.drug macromolecular substances 03 medical and health sciences Downregulation and upregulation medicine Animals Kaempferols Rats Wistar Acetaminophen Superoxide Dismutase lcsh:RM1-950 Glycoside Rats 0104 chemical sciences 010404 medicinal & biomolecular chemistry lcsh:Therapeutics. Pharmacology Complementary and alternative medicine chemistry Apoptosis flavonoids Reactive Oxygen Species Kaempferol Oxidative stress |
Zdroj: | Pharmaceutical Biology, Vol 59, Iss 1, Pp 146-156 (2021) |
ISSN: | 1744-5116 1388-0209 |
Popis: | Context Kaempferol, a flavonoid glycoside, has many hepatoprotective effects in several animals due to its antioxidant potential. Objective This study evaluated the hepatoprotective effect of kaempferol against acetaminophen (APAP)-induced liver damage and examined whether the protection involved modulation of silent information regulator 1 (SIRT1) signalling. Materials and methods Adult male Wistar rats were classified into four groups (n = 8) and treated as follows: control + normal saline (vehicle), control + kaempferol (250 mg/kg), APAP (800 mg/kg, a single dose) and APAP + kaempferol. Kaempferol was administered for the first seven days followed by administration of APAP. The study was ended 24 h after APAP administration. Results At the histological level, kaempferol reduced liver damage in APAP-treated rats. It also reduced the hepatic levels of TNF-α (66.3%), IL-6 (38.6%) and protein levels of caspase-3 (88.2%), and attenuated the increase in circulatory serum levels of ALT (47.6%), AST (55.8%) and γ-GT (35.2%) in APAP-treated rats. In both the controls and APAP-treated rats, kaempferol significantly increased the hepatic levels of glutathione (GSH) and superoxide dismutase, suppressed MDA and reactive oxygen species (ROS) levels, increased protein levels of Bcl-2 and downregulated protein levels of Bax and cleaved Bax. Concomitantly, it reduced the expression of CYP2E1, and the activity and protein levels of SIRT1. Consequently, it decreased the acetylation of all SIRT1 targets including PARP1, p53, NF-κB, FOXO-1 and p53 that mediate antioxidant, anti-inflammatory and anti-apoptotic effects. Discussion and conclusions This study encourages the use of kaempferol in further clinical trials to treat APAP-induced hepatotoxicity. |
Databáze: | OpenAIRE |
Externí odkaz: | |
Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |