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Mycophenolate mofetil attenuates liver ischemia/reperfusion injury in rats

Mycophenolate mofetil (MMF) has been gradually introduced into clinical liver transplantation in recent years. However, the effects of MMF on hepatic ischemia/reperfusion (I/R) injury and the potential mechanisms involved are not totally understood. We aimed to evaluate whether MMF could attenuate hepatic I/R injury. MMF (20 mg/kg) or vehicle was administered to Wistar rats by gavage. The rats were then subjected to hepatic ischemia. Liver cell apoptosis and the levels of aspartate aminotransferase, myeloperoxidase (MPO), xanthine oxidase (XOD) and malondialdehyde (MDA) were determined. Expression of vascular cell adhesion molecule‐1 (VCAM‐1) and activation of mitogen‐activated protein kinases (MAPKs) were also investigated. Furthermore, the hepatic microcirculation was observed by intravital fluorescence microscopy. Rats pretreated with MMF exhibited significant alleviation of their postischemic liver function. Liver cell apoptosis and the tissue MPO, XOD and MDA levels were decreased by MMF pretreatment. MMF also improved I/R‐induced hemodynamic turbulence, as evidenced by reduced hepatic perfusion failure and decreased numbers of rolling and adherent leukocytes. I/R injury induced activation of the MAPKs pathway while expression of VCAM‐1 was downregulated by MMF pretreatment. In summary, MMF attenuates hepatic I/R injury through suppression of the production of reactive oxygen species and amelioration of postischemic microcirculatory disturbances.