Abstract：
:Doxorubicin (Dox), an antitumor anthracycline antibiotic, plays a key role in the treatment of many neoplastic diseases. However, its chronic administration induces cardiomyopathy. Increased oxidative stress is a major factor implicated in Dox-induced cardiotoxicity. We hypothesized that a pre-treatment with grape seed and skin extract (GSE), commonly used as an antioxidant agent, may alleviate this cardiotoxicity. Rats were treated with GSE (500 mg/kg bw) by intraperitoneal injection during 8 days. On the 4th day, rats were administered a single dose of Dox (20 mg/kg). At the end of the treatment, their hearts were Langendorff-perfused, subjected to ischemia/reperfusion (I/R) injury, and left ventricular functions as heart rate and developed pressure measured. Hearts were also used to determine free iron, H2O2, Ca2+, lipoperoxidation, carbonylation and antioxidant enzymes such as superoxide dismutase (SOD), catalase and peroxidase. Doxorubicin drastically affected heart activity as evidenced after I/R experiments. This effect was associated with an increase in heart free iron and a decrease in Ca2+ concentrations. This effect may have contributed to oxidative stress as assessed by high lipoperoxidation and carbonylation level. GSE counteracted Dox-induced disturbances of hemodynamic parameters, alleviated oxidative stress as assessed by normalized iron and Ca2+ levels and increased SOD activity especially the Mn isoform.
journal_name
Cardiovasc Toxicoljournal_title
Cardiovascular toxicologyauthors
Mokni M,Hamlaoui-Guesmi S,Amri M,Marzouki L,Limam F,Aouani Edoi
10.1007/s12012-012-9155-1subject
Has Abstractpub_date
2012-06-01 00:00:00pages
158-65issue
2eissn
1530-7905issn
1559-0259journal_volume
12pub_type
杂志文章abstract：:Congestive heart failure (CHF) afflicts over 5 million individuals in the United States, and most die within 5 yr of diagnosis. Because of the high morbidity and mortality associated with CHF, the search for biomarkers to predict, diagnose, and manage this disease has intensified. Calcium homeostasis and alterations i...
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journal_title：Cardiovascular toxicology
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