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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Setkov N.A., Eremeev A.V.
Заглавие : Inhibitors of protein biosynthesis can stimulate proliferation of mouse hepatocytes in vitro
Колич.характеристики :8 с
Место публикации : Biol. Bull: MAIK NAUKA/INTERPERIODICA, 2003. - Vol. 30, Is. 3. - P212-219. - ISSN 1062-3590, DOI 10.1023/A:1023843409416
Примечания : Cited References: 43
Предметные рубрики: TRANSFORMING-GROWTH-FACTOR
RAT-LIVER REGENERATION
FACTOR-BETA
DNA-SYNTHESIS
PRIMARY CULTURE
PARTIAL-HEPATECTOMY
EPITHELIAL-CELLS
EXPRESSION
MECHANISMS
MODULATION
Аннотация: Hepatocyte proliferation in the liver regenerating after partial hepatectomy ceases when the organ is restored, and the mechanism of this phenomenon is still unclear. In the experiments on fusing hepatocytes from the reoenerated mouse liver (15 days after partial hepatectomy) with NIH 3T3 mouse fibroblasts, we revealed no DNA synthesis in the nuclei of stimulated fibroblasts in heterokaryons (in the presence of hepatocyte nuclei), whereas DNA synthesis in nonfused cells was undisturbed. In this work, our purpose was to find out whether the suppression of DNA synthesis in heterokaryons could be due to the appearance in hepatocytes of some endogenous factors having an inhibitory effect on proliferation. To this end, hepatocytes from the mouse liver regenerated after partial hepatectomy were treated with cycloheximide for 1-4 h and were then fused with stimulated fibroblasts. Such a short-term treatment of hepatocytes with cycloheximide proved to result in the loss of their ability to inhibit DNA synthesis in the nuclei of stimulated or quiescent fibroblasts in heterokaryons, but hepatocytes proper actively proliferated in the medium with a low serum content (0.2%). When the mice with the liver reoenerated after partial hepatectomy were treated with a single sublethal dose of cycloheximide (3 mg/kg), their hepatocytes taken two days after this treatment had no inhibitory effect. Puromycin, another inhibitor of protein synthesis, had the same effect on hepatocytes. These results may be interpreted as evidence that the final stage of liver regeneration after damage is controlled by the factors having a C C negative effect on cell proliferation.
WOS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BONDAR V.S., VYSOTSKII E.S., ROZHMANOVA O.M., VORONINA S.G.
Заглавие : THE CA2+-ACTIVATED PHOTOPROTEIN OBELIN AS AN INDICATOR OF CALCIUM-TRANSPORT IN PROTEOLIPOSOMES CONTAINING MEMBRANES OF THE T-SYSTEM OF SKELETAL-MUSCLES
Колич.характеристики :5 с
Место публикации : Biochem.-Moscow: PLENUM PUBL CORP, 1991. - Vol. 56, Is. 5. - С. 546-550. - ISSN 0006-2979
Примечания : Cited References: 12
Предметные рубрики: CHANNEL
CA-2+
MODULATION
BINDING
Ключевые слова (''Своб.индексиров.''): ca2+-transport--ca2+-activated photoprotein obelin--t-system--1,4-dihydropyridines--liposomes
Аннотация: Data are presented on the Ca2+-activated photoprotein obelin as an indicator of calcium transport in proteoliposomes. Proteoliposomes formed from lecithin and membranes of the T-system of rabbit skeletal muscles were found to exhibit permeability to calcium ions activated by 10(-5) M BAU K-8644; 5.10(-5) M nitrendipine inhibits the action of BAU K-8644. Liposomes did not exhibit sensitivity to the investigated agents. The Ca2+-activated photoprotein obelin is a promising tool for studying fast calcium currents.
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