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1.
M. B. Castillo M. D. Gonzalez G. Burton C. P. Lantos A. Roldán 《Cellular and molecular life sciences : CMLS》1983,39(6):617-618
Summary A dissociation between inhibition of RNA synthesis and cell lysis was observed when thymocytes of adrenalectomized rats were incubated with high concentrations of pregn-4-ene-11-ol-3, 20-dione and pregna-1,4-diene-11-ol-3,20-dione. In contrast, no dissociation of these effects was found with the typical glucocorticoids cortisol and corticosterone, nor with their 1,4-diene analogs under the same conditions.Acknowledgments. This work was supported by grants from the Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina to the Instituto de Biologia y Medicina Experimental and the Programa de Regulación Hormonal y Metabólica as well as by financial help from the Secretaría de Ciencia y Tecnología. 相似文献
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So Young Lee Juanma Ramirez Maribel Franco Benoît Lectez Monika Gonzalez Rosa Barrio Ugo Mayor 《Cellular and molecular life sciences : CMLS》2014,71(14):2747-2758
Ubiquitination, the covalent attachment of ubiquitin to a target protein, regulates most cellular processes and is involved in several neurological disorders. In particular, Angelman syndrome and one of the most common genomic forms of autism, dup15q, are caused respectively by lack of or excess of UBE3A, a ubiquitin E3 ligase. Its Drosophila orthologue, Ube3a, is also active during brain development. We have now devised a protocol to screen for substrates of this particular ubiquitin ligase. In a neuronal cell system, we find direct ubiquitination by Ube3a of three proteasome-related proteins Rpn10, Uch-L5, and CG8209, as well as of the ribosomal protein Rps10b. Only one of these, Rpn10, is targeted for degradation upon ubiquitination by Ube3a, indicating that degradation might not be the only effect of Ube3a on its substrates. Furthermore, we report the genetic interaction in vivo between Ube3a and the C-terminal part of Rpn10. Overexpression of these proteins leads to an enhanced accumulation of ubiquitinated proteins, further supporting the biochemical evidence of interaction obtained in neuronal cells. 相似文献
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J. Aguilera J. Heredero F. Gonzalez Sastre 《Cellular and molecular life sciences : CMLS》1987,43(4):410-412
Summary Mice injected with tetanus toxin (TTx) showed an increase of 5-hydroxytryptamine (serotonin, 5-HT) levels in the central nervous system. The increment was not uniform thoughout the central nervous system. Particularly significant were the 25% and 80% increases observed, respectively, in whole brain and spinal cord. The levels of dopamine and norepinephrine remained unchanged. The subsequent studies of 5-HT turnover revealed a synthesis rate in the tetanic animals that was almost double that of controls. The degradation rate of the amine as well as the levels of 5-hydroxyindolacetic acid were unaffected. 相似文献
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A dissociation between inhibition of RNA synthesis and cell lysis was observed when thymocytes of adrenalectomized rats were incubated with high concentrations of pregn-4-ene-11 beta-ol-3,20-dione and pregna-1,4-diene-11 beta-ol-3,20-dione. In contrast, no dissociation of these effects was found with the typical glucocorticoids cortisol and corticosterone, nor with their 1,4-diene analogs under the same conditions. 相似文献
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The action of high doses of clomiphene citrate on the nuclei of hypothalamic arcuate neurons of male cats has been studied. Clomiphene produces an accumulation of typical crystalloid material in the nuclei. After administration of a protein-synthesis inhibitor, no such material was observed in clomiphene-treated animals. These ultrastructural features could possibly be due to a more intense protein synthesis in the hypothalamic arcuate neurons. 相似文献
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María N. F. de Lew H. Cingolani N. Gonzalez E. S. Blesa J. C. Marsiglia 《Cellular and molecular life sciences : CMLS》1967,23(4):314-315
Résumé Etude de l'équilibre acide-basique de la préparation cur-poumon de l'étourneau, réalisée avec la technique habituelle et les moyens de corriger les altérations constatées. La recherche des causes de ces altérations a permis de conclure que l'alcalose respiratoire est due à la ventilation dont on se sert habituellement, tandis que l'acidose métabolique est due à une production de métabolites acides déclanchés surtout par la saignée des animaux donneurs et par la glucolyse qui se produit à partir de l'extraction du sang et jusqu'au moment de son emploi dans la préparation.
This work has been supported by a grant from the Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. 相似文献
This work has been supported by a grant from the Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina. 相似文献