scholarly journals Ribonucleic acid polymerase activity in cardiomyopathic hamster heart nuclei

1971 ◽  
Vol 123 (4) ◽  
pp. 675-676 ◽  
Author(s):  
A J Bester
Keyword(s):  
Ribonucleic Acid ◽  
Polymerase Activity ◽  
Cardiomyopathic Hamster ◽  
Hamster Heart

scholarly journals Ribonucleic acid polymerase activities in Jerusalem-artichoke tissue

1974 ◽  
Vol 143 (1) ◽  
pp. 107-113 ◽  
Author(s):  
John R. Gore ◽  
John Ingle
Keyword(s):  
Rna Polymerase ◽  
Ribonucleic Acid ◽  
Deae Cellulose ◽  
Jerusalem Artichoke ◽  
Polymerase Activity ◽  
Tuber Tissue ◽  
Rna Polymerase Activity ◽  
Rna Accumulation ◽  
The Relationship

1. Artichoke tuber tissue contained RNA polymerase activity bound to the chromatin and in the supernatant after chromatin sedimentation. 2. The activity in the supernatant, the soluble polymerase, was fractionated into polymerases I and II by DEAE-cellulose chromatography, and the properties of each activity were determined. 3. The proportions of chromatin-bound and soluble activities varied with growth of the tissue, and there was a correlation between chromatin-bound activity and RNA accumulation. 4. The properties of the solubilized chromatin activity were compared with those of the soluble activity, and the relationship between these two activities is discussed.

PI Response and Calcium Overload in Cardiomyopathic Hamster Heart Cell

1992 ◽  
pp. 36-40
Author(s):  
Hideaki Kawaguchi ◽  
Mikako Shoki ◽  
Hitoshi Sano ◽  
Toshiyuki Kudo ◽  
Hirofumi Sawa ◽  
...  
Keyword(s):  
Calcium Overload ◽  
Heart Cell ◽  
Cardiomyopathic Hamster ◽  
Hamster Heart

scholarly journals Modifications of major aspects of myocardial ribonucleic acid metabolism as a response to noradrenaline. Action of the hormone on cytoplasmic processing of ribonucleic acid after reserpine treatment

1977 ◽  
Vol 168 (3) ◽  
pp. 341-345 ◽  
Author(s):  
A Corti ◽  
A Casti ◽  
G Mezzetti ◽  
N Reali ◽  
G Orlandini ◽  
...  
Keyword(s):  
Ornithine Decarboxylase ◽  
Ribonucleic Acid ◽  
Fold Increase ◽  
Rabbit Heart ◽  
Polymerase Activity ◽  
Subcellular Fractions ◽  
Adenosylmethionine Decarboxylase ◽  
Reserpine Treatment ◽  
Perfused Hearts ◽  
Hydrolysis Of

Treatment of perfused rabbit heart with reserpine causes a decrease of incorporation of labelled precursors into RNA species of subcellular fractions and polyamines. Ornithine decarboxylase, S-adenosylmethionine decarboxylase and cytoplasmic Mn2+-stimulated polyadenylate polymerase activities are not modified. Addition of noradrenaline to reserpine-treated perfused hearts enhances, compared with the control, the incorporation of precursor into RNA in all subcellular fractions other than the nuclear one, restores incorporation of labelled putrescine into polyamines, enhances ornithine decarboxylase and S-adenosylmethionine decarboxylase activities and causes a 12-fold increase in cytoplasmic Mn2+-dependent polyadenylate polymerase activity. After treatment with noradrenaline the increase in radioactivity was found solely in AMP after hydrolysis of microsomal RNA to nucleoside monophosphates.

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