ArticleInternational journal of molecular sciences2026
Cytoprotective Effects of Agomelatine on Hepatic Ischemia-Reperfusion Injury in a Rat Model.
Article in International journal of molecular sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hepatic ischemia-reperfusion injury (IRI) is a major cause of liver damage and is characterized by oxidative stress, inflammatory signaling, and hepatocellular apoptosis. Aim: This study investigated the hepatoprotective effects of agomelatine (AGO) administered before ischemia or at the onset of reperfusion in a hepatic IRI model. Rats were allocated into four experimental groups: Sham, IRI, IRI+AGO, and AGO+IRI. Hepatic ischemia was induced by clamping the hepatic pedicle for 1 h followed by 1 h of reperfusion. AGO (20 mg/kg) was administered orally either before ischemia or at the onset of reperfusion. Oxidative stress markers, antioxidant enzymes, nitric-oxide-related parameters, cytokines, liver injury enzymes, and histopathological changes were evaluated. IRI increased oxidant markers and reduced antioxidant defenses. AGO treatment improved redox balance and antioxidant parameters in both treatment groups, with stronger antioxidant responses observed in the AGO+IRI group. Nitric oxide (NO)-related markers differed among groups, including changes in L-arginine, asymmetric dimethylarginine (ADMA), and symmetric dimethylarginine (SDMA) levels, and interleukin-6 (IL-6) levels decreased following AGO administration, particularly in the AGO+IRI group. Histopathological injury and caspase-3 expression were also attenuated in AGO-treated animals. AGO attenuates hepatic IRI by improving redox balance, modulating NO metabolism, and reducing IL-6-associated signaling and apoptosis, with stronger protection when administered before ischemia.
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