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  • Title: [Effects of high density lipoproteins (HDL) and low density lipoproteins (LDL) on cultured bovine aorta endothelial cells. Preliminary observations on ultrastructural morphology of the plasma membrane by freeze-fracturing].
    Author: Weber G, Bianciardi G, Giacchi M, Toti P, Vatti R, Weber E, Bernini F, Fumagalli R.
    Journal: Boll Soc Ital Biol Sper; 1982 Nov 15; 58(21):1387-93. PubMed ID: 7159531.
    Abstract:
    Bovine aortic endothelial cells (BAEC), detached with collagenase, have been studied morphologically after administration, in vitro, of human lipoprotein fractions (200 micrograms/ml of LDL, 200 micrograms/ml of HDL), 24 h before the confluence. One day after the treated cells and the control one were detached with trypsine and prepared for freeze-etching examination. The plasma-membrane has revealed, in the lipoprotein treated cells (HDL or LDL) an increased average value of the number of "pits" present upon a surface unit (P less than 0,05). Moreover, in the HDL-treated cells, the "pits", sometimes, have appeared with a different morphological evidence, similar to the aspects of exocytosis as seen e.g. in platelets or in Langerhans isle cells.
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