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Correlation of membrane-bound and free ribosomes in normal rat liver, Zajdela hepatoma rat liver and ascite cells proper

Pushkina, I.P.; Krechetova, G.D.; Shapot, V.S.

Biokhimiia 41(11): 1940-1944

1976

ISSN/ISBN: 0320-9725
PMID: 191100
Document Number: 102306
The content of membrane-bound ribosomes in normal rat liver cells is 3 times as high as compared to that of free ribosomes. (K=membrane-bound ribosome RNAs divided by free ribosome RNAs=3, the opposite effect being observed in case of ascites hepatoma cells. A considerable increase in the free ribosome fraction in the liver of hepatoma-bearing rats occurs by the sixth day due to a decrease in the content of hepatoma-bearing rats occurs by the sixth day due to a decrease in the content of membrane-bound ribosomes (K=0.6). Similar, but less-pronounced changes were observed in liver cells of control animals after 48-hour starvation (K=0.9), simulating the condition occurring during the last days of tumour animals' life. Thus, changes in the rativ of membrane-bound to free ribosomes in liver during the ascites tumour growth are probably specifics and are not only due to anorexia in Zajdela hepatoma animals.

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