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Platycodin D Ameliorates Acute Kidney Injury in Septic Rats by Regulating Mitogen Activated Protein Kinase Pathway

Acute kidney injury is a severe complication of sepsis. We have shown a protective effect of Platycodin D on sepsis induced acute kidney injury in an animal model that employs cecal ligation and puncture. Cecal ligation and puncture induced a series of degenerative changes in kidney, such as edema, hyperemia, and expansion in glomerular capillary, and inflammatory cells infiltration that were attenuated by Platycodin D. Also, rise in proinflammatory cytokine levels in septic rats was blunted by Platycodin D. Furthermore, Platycodin D administration reduced rise in serum levels of kidney injury markers-blood urea nitrogen and serum creatinine-in septic rats. Moreover, Platycodin D administration also suppressed the cell apoptosis in kidney that was associated with enhanced B-cell lymphoma 2 protein and reduced cleaved cysteine-aspartic protease-3 and BCL2-associated X protein. Lastly, Platycodin D administration attenuated sepsis-induced increase of phospho (p)-extracellular signal-regulated kinase, p-c-Jun NH2-terminal kinase, and p-p38. In conclusion, Platycodin D demonstrated protective effect against sepsis induced acute kidney injury through inactivation of mitogen activated protein kinase pathways, thus providing promising therapeutic strategy for the treatment of sepsis.