Crocetin alleviates myocardial ischemia/reperfusion injury. - GreenMedInfo Summary
Crocetin alleviates myocardial ischemia/reperfusion injury by regulating inflammation and the unfolded protein response.
Mol Med Rep. 2020 Feb ;21(2):641-648. Epub 2019 Dec 17. PMID: 31974615
Crocetin, a natural compound, has been demonstrated to exhibit beneficial effects in cardiovascular diseases. Previous studies demonstrated that crocetin reduced ischemia/reperfusion (I/R) injury by attenuating cytotoxicity and cellular apoptosis. However, the previous mechanistic studies did not fully elucidate its pharmacological effects on cardiac damage, especially I/R injury. The present study verified its cardioprotective effects in a Langendorff perfusion system, an ex vivo model of I/R. It was demonstrated that crocetin significantly attenuated the activities of pro‑inflammatory cytokines and nuclear factor erythroid‑2 related factor 2 (Nrf2)/heme oxygenase‑1 signaling. The present study provided novel insight that crocetin regulated the unfolded proteinresponse (UPR) and decreased associated protein levels to protect the heart. Furthermore, it was identified that Nrf2 played a key role in the cardioprotective effect of crocetin by attenuating inflammation and the UPR.