Tesis sobre el tema "Amanitine"
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Le, Daré Brendan. "Xénobiotiques hépatotoxiques : études de métabolisme et mécanismes d’action". Thesis, Rennes 1, 2021. http://www.theses.fr/2021REN1B005.
Texto completoXenobiotic-induced hepatotoxicity is an extremely rich subject, given the multiple mechanisms and actors involved. This translational work aims to improve ethanol and amanitins (powerful fungal toxins) hepatotoxic mechanisms understanding, in order to provide new elements to optimize the therapeutic management of intoxicated patients. In a first step, we provide additional elements of understanding on macrophages response mechanisms to ethanol. These xenobiotic-cell interactions, shown through the P2X7 receptor induction example, seem to contribute in alcoholic liver damage severity, and testify to the macrophages plasticity in pathological situations. These results suggest in particular the interest of P2X7 receptor antagonist’s development in the treatment of alcoholism. In a second step, we are applied molecular networking, which allows the visualization of complex data acquired by LC-MS/MS, to xenobiotic metabolism study. The acebutolol metabolism example, in the context of voluntary drug intoxication on the one hand, and the in vitro quetiapine metabolism study on the other hand, have provided consistent evidence concerning molecular network interest in this context. In a third and final step, the molecular network application allowed us to rule out the hypothesis of an in vivo and in vitro amanitins metabolism. Moreover, our results show that the hepatocyte-like cellular model of differentiated HepaRG is a relevant model in amanitins study, and show the mitochondrial ROS production implication in these substances toxicity
Nakaya, Helder Takashi Imoto. "Identificação e análise de expressão de RNAs intrônicos não codificadores humanos". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-08052007-144816/.
Texto completoIn this work, we show large-scale studies of antisense noncoding RNAs transcribed from intronic regions of human genes. The correlation of expression levels of some intronic transcripts to the degree of tumor differentiation in prostate cancer points to the biological relevance of these messages in complex diseases such as cancer. We also evaluated the existence of a common mechanism of regulation of transcription shared by protein-coding mRNAs and intronic RNAs by measuring the effect of androgen on the transcriptional profile of a prostate cancer cell line. Survey of mRNA and EST public databases revealed more than 55,000 Totally Intronic Noncoding (TIN) RNAs transcribed from the introns of 74% of all unique RefSeq genes. Guided by this information, we designed an oligoarray platform containing sense and antisense probes for each of 7,520 randomly-selected TIN transcripts plus probes for the corresponding protein-coding genes. We identified exonic and intronic tissue-specific expression signatures for human liver, prostate and kidney. The most highly expressed antisense TIN RNAs were transcribed from introns of proteincoding genes enriched in the \"Regulation of transcription\" class. RNA Polymerase II inhibition resulted in increased expression of a fraction of the intronic RNAs in cell cultures, suggesting that other RNA polymerases may be involved in their biosynthesis. A subset of intronic and protein-coding signatures transcribed from the same genomic loci has correlated expression patterns, suggesting that intronic RNAs regulate the abundance or the pattern of exon usage in protein-coding messages. We have identified diverse intronic RNA expression patterns, indicating that they may have regulatory roles. This gene-oriented approach, using a combined intronic/exonic microarray should permit further comparative analysis of intronic transcription under various physiological and pathological conditions, thus advancing current knowledge about the biological functions of these noncoding RNAs.
Amaral, Paulo de Paiva Rosa. "Estudo da biossíntese e regulação de RNAs não-codificadores intrônicos em células humanas". Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-03012007-000256/.
Texto completoIt has been recently shown that the bulk of the transcription in human cells is comprised of non-protein-coding RNAs (or noncoding RNAs - ncRNAs) transcribed from introns and intergenic regions of the genome. Previous work from our group has demonstrated that expression of long intronic ncRNAs can be correlated to the degree of prostate tumor differentiation, underscoring the physiological relevance of these transcripts. However, the properties, functions, and regulation of this huge population of ncRNAs remain largely unknown. The present work aimed to investigate the biosynthesis of intronic ncRNAs and aspects of its regulation in human cells, focusing on the contribution of RNA Polymerase II (RNAP II). Initially, the model of regulation of gene expression by androgen hormone was used in order to evaluate the participation of the RNAP II transcription factor Androgen Receptor (AR) in the transcriptional regulation of intronic ncRNAs. Chromatin immunoprecipitation experiments revealed the binding of the AR in an androgen response element (ARE) present in a putative promoter driving the expression of an antisense intronic transcript in Myo5A locus in LNCaP cells. The interaction occurred in an androgen-inducible fashion, along with the up-regulation of the transcript, suggesting that hormone activation occurred in a direct manner mediated by the AR. In a different approach, the effect of RNAP II inhibition with α-amanitin for 24 h in LNCaP cells was analyzed using an oligoarray representing totally and partially intronic transcripts, as well as exons of proteincoding genes. The expression of less than 20 % of the intronic transcripts was affected by the treatment, contrasting to a significantly higher fraction observed for exonic messages (40 %). Moreover, most differentially expressed intronic transcripts were down-regulated, but strikingly 13 to 16 % were up-regulated in cells with blocked RNAP II, while this fraction for exonic transcripts was about 2 %. The results described here demonstrate that RNAP II in fact plays a role in intronic transcription in human cells, but also highlight that another transcriptional system may account for the biogenesis of a fraction of intronic ncRNAs.
Brückner, Florian. "Molecular basis of translocation, alpha-amanitin inhibition, and CPD damage recognition by RNA polymerase II". Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-86461.
Texto completoBrückner, Florian. "Molecular basis of translocation, alpha-amanitin inhibition, and CPD damage recognition by RNA polymerase II". kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/8646/.
Texto completoCHAUD, JEAN-PAUL. "L'intoxication phalloidienne : a propos de quatre observations recensees dans le departement des alpes-maritimes". Nice, 1988. http://www.theses.fr/1988NICE6539.
Texto completoBENVENUTO, VINCENT. "Intoxication phalloidienne : aspect botanique, toxicologique, clinique, therapeutique et preventif". Saint-Etienne, 1989. http://www.theses.fr/1989STET6215.
Texto completoDietrich, David John. "Synthesis and evaluation of probes of RNA polymerase II : adaptation of the bicyclic scaffold of the octapeptide amanitin". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27427.
Texto completoKorsak, Barbara [Verfasser]. "DUPA α-Amanitin Conjugates for Targeted Prostate Cancer Therapy - Optimization and Evaluation of In Vivo Potency / Barbara Korsak". Bielefeld : Universitätsbibliothek Bielefeld, 2021. http://d-nb.info/1237815606/34.
Texto completoSEITZ, ISABELLE. "Pharmacologie et toxicologie de l'amanite tue-mouche : ses aspects historiques et modernes". Strasbourg 1, 1991. http://www.theses.fr/1991STR15023.
Texto completoHEURTEBIZE, PASCALE. "Intoxication phalloidienne : a propos de cinq cas traites par ceftazidime et silymarine". Besançon, 1990. http://www.theses.fr/1990BESA3095.
Texto completoGallo, Francesca [Verfasser]. "α-Amanitin-based Small Format-Drug Conjugates for Prostate Cancer Therapy: Enabling Anti-Tumor Activity by Tuning Pharmacokinetic Properties / Francesca Gallo". Bielefeld : Universitätsbibliothek Bielefeld, 2021. http://d-nb.info/1237048532/34.
Texto completoRanoux-Daniel, Muriel. "A propos de l'intoxication par Amanita muscaria et Amanita pantherina : cas personnels et observations recueillies en Aquitaine". Bordeaux 2, 2000. http://www.theses.fr/2000BOR2M104.
Texto completoLiu, Xiangyang [Verfasser]. "Structure of mammalian RNA polymerase II elongation complex bound by α-amanitin and study of mammalian transcription termination and 3’ end processing / Xiangyang Liu". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/1219301183/34.
Texto completoRibordy, François-Xavier, Guy Gaudreau, Annette Ribordy y Micheline Tremblay. "Amanita Muscaria". Acfas-Sudbury, 2004. https://zone.biblio.laurentian.ca/dspace/handle/10219/60.
Texto completoRoth, Wilmar. "Entwicklung einer HPLC-Methode für die Bestimmung von Opiaten, synthetischen Opiaten, Alpha-Amanitin und anderen Substanzen im Urin und Blut mittels elektrochemischer Detektion und/oder Fluorometrie /". [S.l. : s.n.], 1993. http://www.gbv.de/dms/bs/toc/132415984.pdf.
Texto completoBellard, Jean-Christophe. "Étude épidémiologique des intoxications par les champignons supérieurs auprès du centre antipoisons de Bordeaux entre 1993 et 1997". Bordeaux 2, 1998. http://www.theses.fr/1998BOR2P108.
Texto completoNamysl, Corinne. "Etude du métabolisme carboné des racines d'Epicea (Picea abies L. Karsten) soumises à une mycorhization par Amanita muscaria : effets de l'ozone et de la sécheresse sur la mycorhization de l'épicéa". Nancy 1, 1992. http://www.theses.fr/1992NAN10011.
Texto completoMohd, Najib Mohd Idris. "Characterisation of THOC4 response to replicative stress". Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/122562/1/Mohd%20Idris_Mohd%20Najib_Thesis.pdf.
Texto completoPerrier, Anne-Lise. "Syndrome phalloïdien : à propos d'une intoxication chez une femme enceinte à treize semaines d'aménorrhée". Montpellier 1, 1998. http://www.theses.fr/1998MON11025.
Texto completoCirronis, Marco. "Epatotossicità indotta da xenobiotici: studio su nuovi marcatori diagnostici con particolare focus sui microRNA". Doctoral thesis, 2021. http://hdl.handle.net/2158/1245695.
Texto completoBrückner, Florian [Verfasser]. "Molecular basis of translocation, α-amanitin [alpha-amanitin] inhibition, and CPD damage recognition by RNA polymerase II / Florian Brückner". 2008. http://d-nb.info/989450376/34.
Texto completoMusil, Karel. "Vývoj HPLC-DAD-MS/MS metody pro stanovení vybraných toxinů v Muchomůrce zelené". Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-339497.
Texto completoLeite, Marta Sofia Carvalho Ferreira Malheiro. "Desenvolvimento e optimização de uma metodologia analítica para a determinação de a-e B-amanitina em urina humana por LC-MS/MS". Master's thesis, 2011. http://hdl.handle.net/10316/17606.
Texto completoLiu, Xiangyang. "Structure of mammalian RNA polymerase II elongation complex bound by α-amanitin and study of mammalian transcription termination and 3’ end processing". Doctoral thesis, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0005-12C1-C.
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