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Protective effect of linalool against lipopolysaccharide/d-galactosamine-induced liver injury in mice
Institution:1. Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP), CONICET-UNLP, CCT-La Plata, Facultad de Ciencias Médicas, La Plata, Argentina;2. Laboratory of Gastroenterology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium;3. Department of Gastroenterology, Cliniques Universitaires Saint-Luc, Brussels, Belgium;1. Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi''an 710032, China;2. Shaanxi University of Traditional Chinese Medicine, Xian Yang 712046, China
Abstract:Linalool, a natural compound of the essential oils, has been shown to have antinociceptive, antimicrobial, and anti-inflammatory properties. The aim of this study was to investigate the effects of linalool against lipopolysaccharide (LPS)/d-galactosamine (GalN)-induced liver injury in mice. Mice were administered with linalool 1 h before receiving LPS (50 μg/kg) and GalN (800 mg/kg). The results demonstrated that linalool had a protective effect on LPS/GalN-induced acute liver injury, as evidenced by the attenuation of hepatic pathological damage, malondialdehyde (MDA) content, MPO activity and serum ALT and AST levels. Linalool alleviated serum and hepatic TNF-α and IL-6 production, as well as hepatic iNOS and COX-2 expression by inhibiting NF-κB activation. Treatment of linalool increased bcl-2 expression and inhibited caspase-3 and caspase-8 expression. In addition, linalool increased Nrf2 and heme oxygenase-1 expression up-regulation by LPS/GalN. In conclusion, our results suggested that linalool was protected against LPS/GalN-induced liver injury through induction of antioxidant defense via Nrf2 activating and reduction inflammatory response via NF-κB inhibition.
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