Curcumin coated gold nanoparticles attenuates doxorubicin-induced
cardiotoxicity via regulating apoptosis on mice model
Abstract
Doxorubicin (DOX) is one of the most widely used chemotherapy agents
which is associated with several adverse effects on heart tissue
including cardiomyopathy. Curcumin (Cur), a well-known dietary
polyphenol could exert important cardioprotective effect but its
biological application is limited by chemical insolubility. In order to
overcome this problem in this study, we synthesized gold nanoparticles
completely based on curcumin (Cur-AuNPs). This nanoparticle, on the one
hand, could bring out a stable delivery way for curcumin that cause more
solubility and on the other hand, will cause more efficacy. UV-Visible,
size, surface charge, TEM and FTIR characterization also in-vitro
cytotoxicity effect on H9C2 cells were performed for Cur-AuNPs.
Biological efficacy of Cur-AuNPs was evaluated after acute
cardiotoxicity induction in Balb/c with DOX injection in comparison to
carrier-free curcumin. Heart protective effect of Cur-AuNPs was
evaluated 24 h after toxicity induction by quantifying serum biomarkers,
myocardial histological changes and cardiomyocyte apoptosis. Long term
Cur-AuNPs protective effect was evaluated for heart/body weight changes
and myocardial fibrosis after 14 days of toxicity induction. The results
revealed that Cur-AuNPs delivery system was capable to apply heart
protection in a much more effective way than curcumin. Cur-AuNPs
efficacy is evident both in the short-term results, 24 h after toxicity
induction, by reduction of serum biomarkers and apoptotic proteins (Bax
and Caspase-3) and no sign of interfibrillar haemorrhage, and
intercellular spaces in microscopic images also in the long-term
study,14 days later, that indicate Cur-AuNPs could successfully prevent
body and heart weight loss.