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  • Title: The effect of ethanol on the lipoprotein metabolism of aortic smooth muscle cells.
    Author: Ruczkal-Pietrzak E, Wilce PA, Shanley BC.
    Journal: Int J Biochem; 1986; 18(11):1039-44. PubMed ID: 3803694.
    Abstract:
    The effect of ethanol exposure on the binding and metabolism of bovine low density lipoprotein by bovine arterial smooth muscle cells was studied. In cells exposed to ethanol (80 mM) for 48 hr or 14 days and incubated with low density lipoprotein for 24 hr there was a reduction in the amount of low density lipoprotein internalised at all concentrations of lipoprotein. There was no effect on the rate of degradation of the low density lipoprotein and no demonstrable changes in the amount of low density lipoprotein bound to the cell surface at high concentrations of low density lipoprotein. Similar results for internalisation and degradation were obtained in a time dependent study. Binding was shown to be reduced in the ethanol treated cells (48 hr) when low concentrations (5 micrograms/ml) of low density lipoprotein were incubated for short periods (less than 3 hr). Scatchard plot analysis indicated that this reduced binding may be due to a reduction of receptor numbers in these cells.
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