Morphometric study of myocardial changes during doxorubicin-induced cardiomyopathy in mice


Vijgh, Wim J.F. van der and Velzen, Dick van and Poort, Jos S.E. van der and Schlüper, Henny M.M. and Mross, Klaus and Feijen, Jan and Pinedo, Herbert M. (1988) Morphometric study of myocardial changes during doxorubicin-induced cardiomyopathy in mice. European Journal of Cancer and Clinical Oncology, 24 (10). pp. 1603-1608. ISSN 0277-5379

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Abstract:Doxorubicin (DOX) is one of the most effective anti-cancer drugs in oncology, but may cause a cumulative dose-dependent cardiomyopathy in a number of cancer patients. The effect of DOX on the heart was studied in mice treated with i.v. injections of 2 mg/kg by measuring morphometric parameters, including nuclear index (number of non-myocytes/number of myocyte nuclei), reticulin index (reticulin area/number of myocyte transsections), nuclear transsectional area, myocyte transsectional area, capillary index (number of capillaries/number of myocyte transsections) and capillary transsectional area. The highest significant difference between control mice and DOX-treated mice was observed immediately after the 12th dose of DOX except for the two capillary parameters. The highest level of significance for these two parameters was obtained 12 weeks after the end of DOX treatment. In contrast to the observations in rats, mice did not develop a nephrotic syndrome during treatment with DOX. The morphometric analysis of myocardial changes in mice, as a quantitative and objective method, seems to be a good model for comparative studies on cardiomyopathy induced by anthracycline analogues.
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Copyright:© 1988 Elsevier Science
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