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  • Title: [The effect of muramyl dipeptide analog, GMPD, incorporated into liposomes of various composition on the functional activity of macrophages].
    Author: Stefanov AV, Bondar' OP, Umanskiĭ VIu, Lishko VK, Baletskiĭ KP.
    Journal: Ukr Biokhim Zh (1978); 1989; 61(6):63-9. PubMed ID: 2561033.
    Abstract:
    Liposomes of different composition and N-acetylglucosaminyl-N-acetylmuramyl-L-alanyl-D-isoglutamine (GMPD) encapsulated in them are studied for their effect on the functional activity of macrophages by means of determining the 5'-nucleotidase and adenosine deaminase activity in the in vivo experiments. It is shown that both liposomes and GMDP encapsulated in them increase the activity of adenoside deaminase and decrease that of 5'-nucleotidase. This evidences for a change in the adenosine metabolism in the alveolar and peritoneal macrophages and an increase in the functional activity of cells which resulted from that rise. The manifestation of the process depends both on the lipid composition of liposomes and their charge. The observed increase in the functional activity of the alveolar macrophages under the effect of liposomes and GMDP encapsulated in them correlates with inhibition of the lung metastases development in mice.
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