Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
147-274 |
DRI_Background |
denotes |
Doxorubicin (DOX) is an anthracycline antibiotic routinely used as a chemotherapeutic agent for the treatment of solid tumours. |
T2 |
275-368 |
DRI_Background |
denotes |
However, DOX possesses an acute and cumulative cardiotoxicity due to free radical production. |
T3 |
369-618 |
DRI_Background |
denotes |
The present study was designed to investigate the possible protective effects of saffron (Crocus sativus) extracts against DOX-induced acute cardiotoxicity in isolated rabbit hearts submitted to 30 min global ischemia followed by 40 min reperfusion. |
T4 |
619-727 |
DRI_Background |
denotes |
DOX was delivered during reperfusion, without or with saffron given 5 min before ischemia or at reperfusion. |
T5 |
728-805 |
DRI_Background |
denotes |
Cardiodynamic, biochemical, and histopathological parameters were determined. |
T6 |
806-981 |
DRI_Outcome |
denotes |
In addition, to determine the expression of the AKT/mTOR/4EBP1 pathway, the levels of p38 MAPK and cardiac troponin T in heart homogenates were visualized by Western blotting. |
T7 |
982-1096 |
DRI_Background |
denotes |
DOX administration during 40 min of reperfusion increased ischemic tissue damage, but did not act synergistically. |
T8 |
1097-1273 |
DRI_Outcome |
denotes |
Administration of saffron extracts during the first minutes of reperfusion significantly reduced oxidative myocardial damage, but was less effective when given before ischemia. |
T9 |
1274-1502 |
DRI_Outcome |
denotes |
Subsequent Western blot analysis revealed that saffron administration preserved cardiac troponin T proteins, inhibited the p38 MAPK pathway, and activated the AKT/mTOR/4EBP1 pathway in reperfusion- and DOX-treated rabbit hearts. |
T10 |
1503-1683 |
DRI_Background |
denotes |
In conclusion, saffron extracts, acting through antioxidant and antiapoptotic mechanisms, exhibited a protective effect against DOX-induced cardiotoxicity under ischemic condition. |