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Role of (+-)-1,2-bis(3,5-dioxopiperazinyl-1-yl)propane (ICRF-187) in modulating free radical scavenging enzymes in doxorubicin-induced cardiomyopathy. 1990

P Alderton, and J Gross, and M D Green
Department of Medical Oncology, Royal Melbourne Hospital, Victoria, Australia.

This study was designed to investigate the mechanism by which (+-)-1,2-bis(3,5-dioxopiperazinyl-1-yl)propane (ICRF-187) protects against doxorubicin cardiotoxicity. Others have hypothesized that the major factor contributing to doxorubicin cardiotoxicity is the depletion of the antioxidant defense mechanisms of the heart induced by doxorubicin. Mice were acutely (24-h exposure) or chronically (13-week exposure) treated with doxorubicin to develop a model for cardiotoxicity. Five-week-old BALB/c mice were given i.p. injections of doxorubicin alone or 30 min after ICRF-187, while control mice received ICRF-187 or 0.9% NaCl solution alone without doxorubicin. Electron microscopy of the mouse hearts demonstrated conclusively that doxorubicin was cardiotoxic after 13 weeks of exposure, showing mitochondrial degeneration and disruption of the myofibrillar organization. Furthermore, normal morphology of the electron micrographs after treatment with doxorubicin and ICRF-187 indicated that ICRF-187 was cardioprotective. The activities of the antioxidants superoxide dismutase, glutathione peroxidase, and catalase and the concentration of reduced glutathione were measured in the heart, liver, kidneys, and skeletal muscle of mice treated with doxorubicin, ICRF-187, or the drug combination. After acute or chronic exposure to the drugs there was no significant difference in enzyme or reduced glutathione levels compared to the control mice in any of the treatment groups. It was concluded that neither the cardioprotective effect of ICRF-187 nor the cardiotoxicity induced by doxorubicin was related to an effect on cardiac antioxidants, but rather another mechanism operated in this particular model.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D009132 Muscles Contractile tissue that produces movement in animals. Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D009202 Cardiomyopathies A group of diseases in which the dominant feature is the involvement of the CARDIAC MUSCLE itself. Cardiomyopathies are classified according to their predominant pathophysiological features (DILATED CARDIOMYOPATHY; HYPERTROPHIC CARDIOMYOPATHY; RESTRICTIVE CARDIOMYOPATHY) or their etiological/pathological factors (CARDIOMYOPATHY, ALCOHOLIC; ENDOCARDIAL FIBROELASTOSIS). Myocardial Disease,Myocardial Diseases,Myocardial Diseases, Primary,Myocardial Diseases, Secondary,Myocardiopathies,Primary Myocardial Disease,Cardiomyopathies, Primary,Cardiomyopathies, Secondary,Primary Myocardial Diseases,Secondary Myocardial Diseases,Cardiomyopathy,Cardiomyopathy, Primary,Cardiomyopathy, Secondary,Disease, Myocardial,Disease, Primary Myocardial,Disease, Secondary Myocardial,Diseases, Myocardial,Diseases, Primary Myocardial,Diseases, Secondary Myocardial,Myocardial Disease, Primary,Myocardial Disease, Secondary,Myocardiopathy,Primary Cardiomyopathies,Primary Cardiomyopathy,Secondary Cardiomyopathies,Secondary Cardiomyopathy,Secondary Myocardial Disease
D009206 Myocardium The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow. Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D010879 Piperazines Compounds that are derived from PIPERAZINE.
D011929 Razoxane An antimitotic agent with immunosuppressive properties. ICRF-159,ICRF-186,NSC-129943,Razoxane Mesylate, (R)-Isomer,Razoxane, (R)-Isomer,Razoxin,ICRF 159,ICRF 186,ICRF159,ICRF186,NSC 129943,NSC129943
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference

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