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  • Title: [Binding of 1-0-alkyl-2-0-acetyl-sn-glycero-3-phosphocholine (thrombocyte activating factor) by plasma components. Exchange of the thrombocyte activating factor between lipoproteins and thrombocytes].
    Author: Kulikov VI, Bergel'son LD.
    Journal: Biokhimiia; 1984 Aug; 49(8):1310-5. PubMed ID: 6093897.
    Abstract:
    The binding of 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine, a platelet activating factor (PAF), to plasma components was studied. Gel filtration and lipoprotein fractionation revealed the presence in the plasma of PAF-binding fractions corresponding to plasma albumin as well as of low and high density lipoproteins. Incubation of PAF-containing lipoproteins with rabbit platelets resulted in a transfer of PAF to the platelets. PAF bound to plasma albumin is less exchangeable than PAF bound to lipoproteins. The PAF-transferring efficiency of high density lipoproteins (HDL) and of low density lipoproteins (LDL) correlates with the amounts of HDL- and LDL-receptors on the platelet surface. It may thus be assumed that PAF released by various cells interacts with lipoproteins which further transport the bound PAF to target cells carrying lipoprotein receptors.
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