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  • Title: Effects of partial hepatectomy on RNA polymerase activities in mouse liver.
    Author: Ljungquist I, Aström S.
    Journal: Int J Biochem; 1984; 16(1):69-74. PubMed ID: 6698289.
    Abstract:
    Chromatin-bound and poly[d(A-T)]dependent RNA polymerase I plus III and II activities of mouse liver were analysed 24 and 48 hr after partial hepatectomy. Chromatin-bound RNA polymerase I plus III activity showed an increase of 57% at 24 hr and 51% at 48 hr after partial hepatectomy. There was a decrease in chromatin-bound RNA polymerase II activity of 15% at 24 hr and 34% at 48 hr after partial hepatectomy. There was no significant changes in poly[d(A-T)]dependent RNA polymerase activities. Heparin caused an approximately 10-fold increase in chromatin-bound RNA polymerase II activity. The stimulation by heparin was significantly increased 48 h after partial hepatectomy. Anaesthesia and/or surgery had great influence on RNA polymerase activities. At 24 hr after operation, chromatin-bound RNA polymerase I plus III and II activities were depressed, and the liver cell chromatin was more susceptible to stimulation by heparin.
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