Abstract
Ergosterol (ER) is the primary sterol found in fungi and is named after the ergot fungus. A variety of pharmacological activities have been reported for ER, including antioxidative, anti-proliferative, and anti-inflammatory effects, although its role in sepsis remains unclear. The protective effect of ER on lipopolysaccharide (LPS)-induced sepsis myocardial injury was evaluated both in vivo and in vitro. Rats were pretreated with ER and then with LPS. Histopathology of heart tissues was first performed. Subsequently, the levels of superoxide dismutase (SOD), malondialdehyde (MDA), creatine kinase MB fraction (CK-MB), and lactate dehydrogenase (LDH) in serum and heart tissues were assessed by enzyme-linked immunosorbent assay kits. Western blotting was further used to evaluate the expression of antioxidant proteins (HO-1 and cytochrome c) and apoptosis associated proteins (Bcl-2, Bax, cleaved-caspase-3, cleaved-caspase-9, and cleaved-PARP). In addition, the effects of ER on oxidative stress biomarkers and apoptosis proteins were also detected in LPS-treated H9C2 cells. Moreover, small interfering Nrf2 RNA was transfected to H9C2 cells to study the role of Nrf2 signaling in connection with the protective effects of ER. Pretreatme...Continue Reading
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