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- W2000628149 abstract "The objective of this study was to examine the hypothesis that the alterations of cardiac nuclei, that has been noted in some cardiomyopathies, can be produced by palmitate, a saturated fatty acid present in high circulating concentrations in patients with conditions associated with a high probability of developing cardiomyopathy. Cardiomyocytes isolated from embryonic chick ventricle were maintained in culture for 72 h and then treated with palmitate, 100 μM for 24 h. Cells were stained with acridine orange or Giemsa and examined microscopically. Cell size and nuclear size were examined by forward light scatter during flow cytometry. Cells were permeabilized and their nuclei were stained with propidium iodide and examined by flow cytometry on populations of 10 000 cells. Cardiomyocytes treated with palmitate displayed changes in nuclear appearance as nuclei were larger, relative to cell size, with more intense acridine orange staining in a peripheral location. Nucleoli were often disrupted. Palmitate produced a significant (P<0.001) and 17% increase in nuclear size compared to untreated cells using flow cytometry analysing forward light scatter to estimate nuclear and whole cells size. There were no significant changes in the size of the whole cell and ratio of nucleus to whole cell was significantly (P<0.01) increased compared to control cells. Fluorescent activating cell sorting analysis of propidium iodide stained nuclei demonstrated that the nuclear enlargement was not due to cell mitosis as the proportion of nuclei in Go/G1, S or M was not changed by palmitate. In summary, these studies identify that palmitate can induce structural abnormalities of cardiomyocytes nuclei by producing increased nuclear size and nucleolar destruction." @default.
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- W2000628149 date "1999-10-01" @default.
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- W2000628149 title "Palmitate induces structural alterations in nuclei of cardiomyocytes" @default.
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- W2000628149 doi "https://doi.org/10.1054/tice.1999.0062" @default.
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