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• W2093670340 abstract "The changes in the number of perichromatin granules (PCG) and the alterations in the RNA content of the interchromatin and perichromatin regions caused by ovariectomy and estradiol injection were studied in rat endometrial fibroblast and myometrial muscle cells. Twelve rats were divided in four groups. A group of rats was fixed without any treatment, the other three groups were ovariectomized and processed 21 days after the operation. One of them was studied without further treatment, and two groups were injected intraperitoneally with 20 micrograms of 17 beta-estradiol hemisuccinate and fixed 0.5 and 2 h after the injection. The frequency of PCG was evaluated in preparations stained with EDTA procedure preferential for RNP. The alterations of RNA content were estimated by post-embedding high resolution in situ hybridization using a total DNA probe labeled with biotinilated nucleotides revealed by streptavidin coupled with 10 nm gold grains. Most of the non-nucleolar labeling is associated to RNP containing fibrils. Perichromatin and interchromatin granules are labeled to a lesser extent. Castration brings about a reduction of the number of PCG and of the numerical density of labeling in endometrial fibroblasts. The injection of estradiol causes a rapid increase in both parameters. On the contrary, the frequency of PCG and intensity of labeling of epithelial endometrial cells and in muscle cells increase after ovariectomy and are reduced by estradiol administration. These results suggest that estradiol may affect differentially various types of target cells in the same organ, and also that PCG are not the only nuclear compartment of pre-mRNA or mRNA altered by the changes in estradiol, the RNP containing fibrils located in the perichromatin and in the interchromatin regions are also involved." @default.
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• W2093670340 date "1999-03-01" @default.
• W2093670340 modified "2023-10-18" @default.
• W2093670340 title "Correlation of the changes of the frequency of perichromatin granules with the RNA content of the interchromatin region of uterine cells in normal and ovariectomized rats. A high resolution in situ hybridization and stereological study" @default.
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• W2093670340 doi "https://doi.org/10.1016/s0248-4900(99)80035-5" @default.
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