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Eventually, heart failure can result, which carries a 50% mortality rate. [21] There is no effective treatment against established cardiomyopathy caused by the drug as of 2010. [ 21 ] The drug dexrazoxane , which is an iron chelator may be used to decrease the risk of doxorubicin's cardiotoxicity in certain cases.
As an example, the incidence of congestive heart failure is 4.7%, 26% and 48% respectively when patients received doxorubicin at 400 mg/m 2, 550 mg/m 2 and 700 mg/m 2. [4] Therefore, the lifetime cumulative doxorubicin exposure is limited to 400–450 mg/m 2 in order to reduce congestive heart failure incidence to less than 5%, although ...
Doxorubicin is a very effective anti-cancer drug that causes congestive heart failure while treating tumors. [7] Doxorubicin is an uncoupling agent in that it inhibits proper functioning of complex I of the electron transport chain in mitochondria. It then leads to the production of ROS and the inhibition of ATP production.
Cardiotoxicity is the occurrence of heart dysfunction as electric or muscle damage, resulting in heart toxicity. [1] This can cause heart failure, arrhythmia, myocarditis, and cardiomyopathy in patients. [2] Some effects are reversible, while in others, permanent damage requiring further treatment may arise.
Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome caused by an impairment in the heart's ability to fill with and pump blood.. Although symptoms vary based on which side of the heart is affected, HF typically presents with shortness of breath, excessive fatigue, and bilateral leg swelling. [3]
Cardiotoxicity (heart damage) is especially prominent with the use of anthracycline drugs (doxorubicin, epirubicin, idarubicin, and liposomal doxorubicin). The cause of this is most likely due to the production of free radicals in the cell and subsequent DNA damage .
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