Abstract
The study aimed to investigate the potential attenuation effect of chitosan in liver ischemia/reperfusion injury (I/R), and its relevant protective mechanisms. Chitosan (200 mg/kg) has been administered orally for 30 days, later animals underwent liver 45 min ischemia and reperfusion for 60 min. Following treatment with chitosan, the levels of serum aminotransferases and lactate dehydrogenase were significantly reduced. Similarly, hepatic (GSH, SOD, CAT, GST and GPx) were enhanced, and the level of tissue malondialdehyde (MDA) was decreased. In addition, inflammatory cytokinesis (TNF-α and TGF-β) have recorded a significant decrease in their mRNA expression and protein levels using qPCR and ELISA respectively. Marked reduction of apoptosis has been indicated by the elevation in BCL2, and decreasing in BAX, Caspace-3 and Cytochrome-c expression levels, which furthermore confirmed by DNA fragmentation assay. The enhancement of the previous parameters resulted in a marked improvement in the liver architectures after chitosan administration. In conclusion, chitosan has proved its efficiency as an anti-inflammatory and antioxidant agent through its inhibitory effect of cytokines and reducing ROS respectively. In addition, chitosan could modulate the changes in histological structure and alleviate apoptosis induced by liver I/R, which recommend it as an efficient agent for protection against liver I/R injury.
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