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I F Tannock 《Cancer research》1969,29(8):1527-1534
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Ghosh S Roy S Banerjee M Maity P 《Journal of experimental & clinical cancer research : CR》2004,23(4):681-690
In this study the enzyme glutaminase, purified from the ascites fluid of ovarian cancer patients, was analysed for its antiangiogenic activity. Intraperitoneal administration of this enzyme reduces the number of tumor directed capillaries in solid and ascites tumor bearing Swiss mice induced by transplantation of Ehrlich ascites cells. The enzyme has a critical role in regulating the secretion of vascular endothelial growth factor (VEGF) from tumor cell and in turn tumor growth. Glutamine analogue like 6-diazo, 5- oxo L-norleucine (DON) is also found to be effective in regulating vascular endothelial growth factor (VEGF) secretion from tumor cells in vitro. Treatment with enzyme reduced serum VEGF levels of the tumor induced animals. In vitro VEGF production by EAC cells was reduced in a concentration dependent manner in presence of glutamine analogue. 相似文献
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Cholesterol metabolism in the Ehrlich ascites tumor 总被引:1,自引:0,他引:1
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Intracellular hydrogen transport in Ehrlich ascites tumor cells 总被引:1,自引:0,他引:1
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The incorporation of cis-diammine Dichloro Platinum (II) (cisplatin) on the Ehrlich ascites carcinoma (EAT) cells has been studied in this paper. Ultrastructural study of cells treated 'in vivo' with cisplatin showed that a new treatment with this substance after fixation, blocks uranyl acetate staining with the consequent lack of heterochromatin contrast. 相似文献
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The presence of putrescine or chlorpheniramine in the incubation medium of Ehrlich ascites tumor cells starved for 1 h significantly inhibits the rate of ferricyanide reduction by their plasma membrane redox system. Freshly harvested cells, without depletion of their intracellular pools of polyamines, and cells preincubated under conditions arranged to increase ornithine decarboxylase activity also reduced externally added ferricyanide at a lower rate than those cells starved for 1 h. All these data seems to indicate that the presence of putrescine is enough to significantly inhibit Ehrlich cell plasma membrane redox system activity. 相似文献
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