Abstract
Fulminant hepatic failure (FHF) is a life-threatening syndrome characterized by massive hepatic necrosis and high mortality. There is no effective therapy for the disease other than liver transplantation. This study aimed to investigate the effect of agmatine, inducible nitric oxide synthase (iNOS) inhibitor, on d-galactosamine and lipopolysaccharide (GalN/LPS)-induced FHF in mice and explore its possible mechanism(s). Male Swiss albino mice were injected with a single dose agmatine (14 mg/kg, IP) 8 h prior to challenge with a single intraperitoneal injection of both GalN (800 mg/kg) and LPS (50 μg/kg). Agmatine significantly attenuated all GalN/LPS-induced biochemical and pathological changes in liver. It prevented the increase of serum transaminases and alkaline phosphatase (ALP). In addition, agmatine markedly attenuated GalN/LPS-induced necrosis and inflammation. Agmatine significantly reduced oxidative stress and enhanced antioxidant enzymes. Importantly, agmatine decreased total nitric oxide (NO) and pro-inflammatory cytokine, tumor necrosis factor-alpha (TNF-α). These findings reveal that agmatine has hepatoprotective effects against GalN/LPS-induced FHF in mice that may be related to its ability to suppress oxidative stress, NO synthesis and TNF-α production. Therefore, agmatine may serve as a novel therapeutic strategy for hepatic inflammatory diseases.
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The authors acknowledge Dr. Abdelhadi M. Shebl (Department of Pathology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt) for histopathological evaluation.
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El-Agamy, D.S., Makled, M.N. & Gamil, N.M. Protective effects of agmatine against d-galactosamine and lipopolysaccharide-induced fulminant hepatic failure in mice. Inflammopharmacol 22, 187–194 (2014). https://doi.org/10.1007/s10787-013-0188-2
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DOI: https://doi.org/10.1007/s10787-013-0188-2