| Autor: |
Si Wan Lei, Guozhen Cui, George Pak Heng Leung, Sharon Chui Wah Luk, Maggie Pui Man Hoi, Liang Wang, Gail B. Mahady, Simon Ming Yuen Lee |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Journal of Functional Foods, Vol 18, Iss , Pp 213-223 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1756-4646 |
| DOI: |
10.1016/j.jff.2015.06.054 |
| Popis: |
Icaritin, a prenylflavonoid isolated from Herbal Epimedii, is well known for its osteoplastic and anti-tumour activities. Here, we examined the cardioprotective actions of icaritin on cardiac H9c2 cells under oxidative stress conditions induced by treatment with tert-butylhydroperoxide (t-BHP). Icaritin at a concentration range between 1 and 4 µM effectively increased cell viability and decreased lactate dehydrogenase (LDH) leakage and reactive oxygen species (ROS) release in t-BHP treated cells, reflecting its ability to reduce t-BHP-induced cell injury. Icaritin also protected cell membrane integrity by preventing the collapse of the mitochondrial membrane potential. In addition, pretreatment of NF-E2-related factor 2 (Nrf2) siRNA and Akt inhibitor abolished the cardioprotective effect of icaritin. Furthermore, Nrf2 siRNA transfection interfered with the effect of icaritin on the inhibition of Ca2+ overload, whereas Akt inhibitor reduced icaritin-induced haemo-oxygenase-1 (HO-1) expression. Collectively, these results suggest that icaritin exerted its cardioprotective effect through the Akt/Nrf2/HO-1 and calcium signalling pathways. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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