Abstract | BACKGROUND AND PURPOSE: EXPERIMENTAL APPROACH: KEY RESULTS: SIH fully protected cardiomyocytes against model oxidative injury induced by hydrogen peroxide exposure. SIH also significantly but only partially and with no apparent dose-dependency, reduced DAU-induced cardiomyocyte death. However, the observed protection was not accompanied by decreased lipid peroxidation. In the HL-60 acute promyelocytic leukaemia cell line, SIH did not blunt the antiproliferative efficacy of DAU. Instead, at concentrations that reduced DAU toxicity to cardiomyocytes, SIH enhanced the tumoricidal action of DAU. CONCLUSIONS AND IMPLICATIONS: This study demonstrates that iron is most likely involved in anthracycline cardiotoxicity and that iron chelation has protective potential, but apparently through mechanism(s) other than by inhibition of ROS-induced injury. In addition to cardioprotection, iron chelation may have considerable potential to improve the therapeutic action of anthracyclines by enhancing their anticancer efficiency and this potential warrants further investigation.
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Authors | T Simůnek, M Sterba, O Popelová, H Kaiserová, M Adamcová, M Hroch, P Hasková, P Ponka, V Gersl |
Journal | British journal of pharmacology
(Br J Pharmacol)
Vol. 155
Issue 1
Pg. 138-48
(Sep 2008)
ISSN: 0007-1188 [Print] England |
PMID | 18536744
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Aldehydes
- Antibiotics, Antineoplastic
- Hydrazones
- Iron Chelating Agents
- salicylaldehyde isonicotinoyl hydrazone
- Malondialdehyde
- Daunorubicin
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Topics |
- Aldehydes
(pharmacology)
- Animals
- Animals, Newborn
- Antibiotics, Antineoplastic
(toxicity)
- Cell Proliferation
(drug effects)
- Cell Survival
(drug effects)
- Cytoprotection
- Daunorubicin
(toxicity)
- Dose-Response Relationship, Drug
- HL-60 Cells
- Humans
- Hydrazones
(pharmacology)
- Iron Chelating Agents
(pharmacology)
- Leukemia, Promyelocytic, Acute
(metabolism, pathology)
- Lipid Peroxidation
(drug effects)
- Malondialdehyde
(metabolism)
- Myocytes, Cardiac
(drug effects, metabolism, pathology)
- Oxidative Stress
(drug effects)
- Rats
- Rats, Wistar
- Time Factors
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