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                <text>&lt;strong&gt;Development and characterization of two novel 68 Ga labelled neuropeptide Y short analogues with potential application in breast cancer imaging&amp;nbsp;&lt;/strong&gt;</text>
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                <text>&lt;span&gt;In vivo receptor targeting with radiolabelled peptide-based probes is an attractive approach for the development of novel radiotracers for molecular imaging. This work presents the development and characterization of two novel neuropeptide Y analogues labelled with a positron emitter&amp;nbsp;&lt;/span&gt;&lt;span&gt;68&lt;/span&gt;&lt;span&gt;Ga, for potential use in breast cancer imaging. Both analogues share the same amino acid sequence and were derivatized with NOTA through either a lysine linker (L1) or an acetylated lysine (L2). In both cases, a single product with radiochemical purity higher than 95% was obtained. The two complexes were hydrophilic, showed remarkable in vitro stability, good cellular uptake, binding affinity in the nanomolar range and high cellular internalization rate. Biodistribution studies revealed low blood uptake and elimination through the urinary tract. The addition of an acetyl group in the spacer increased the lipophilicity of C2 and modified the reactivity of the &amp;epsilon;-amino group of the lysine which resulted in lower protein binding and lower percentage of injected dose in bladder and urine. The tumour versus muscle ratio was (3.8&amp;nbsp;&amp;plusmn;&amp;nbsp;0.4) for&amp;nbsp;&lt;/span&gt;&lt;span&gt;68&lt;/span&gt;&lt;span&gt;Ga-L1 and (4.7&amp;nbsp;&amp;plusmn;&amp;nbsp;0.4) for&amp;nbsp;&lt;/span&gt;&lt;span&gt;68&lt;/span&gt;&lt;span&gt;Ga-L2. These results encourage performing further studies in order to complete the evaluation of both tracers as potential radiopharmaceutical for breast cancer imaging.&lt;/span&gt;</text>
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                <text>&lt;strong&gt;Cardoso, Maria Elena&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Tejer&amp;iacute;a, Emilia&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Zirbesegger, Kevin&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Savio, Eduardo&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Ter&amp;aacute;n, Mariella&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Rey R&amp;iacute;os, Ana Mar&amp;iacute;a&lt;/strong&gt;</text>
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                <text>Chemical Biology and Drug Design,&amp;nbsp;v. 98, n&amp;deg; 1, 2021. -- pp. 182-191.</text>
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                <text>&lt;p&gt;&lt;strong&gt;Informaci&amp;oacute;n sobre Derechos de Autor&lt;/strong&gt;&lt;span&gt;&amp;nbsp;(Por favor lea este aviso antes de abrir los documentos u objetos)&lt;/span&gt;&lt;strong&gt;&amp;nbsp;&lt;/strong&gt;&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt;La legislaci&amp;oacute;n uruguaya protege el derecho de autor&amp;nbsp;&lt;/strong&gt;&lt;span&gt;sobre toda creaci&amp;oacute;n literaria, cient&amp;iacute;fica o art&amp;iacute;stica, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeci&amp;oacute;n a lo establecido por el derecho com&amp;uacute;n y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)&lt;/span&gt;&lt;/p&gt;&#13;
&lt;p&gt;&lt;span&gt;&lt;strong&gt;ADVERTENCIA&lt;/strong&gt;&amp;nbsp;- La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.&lt;/span&gt;&lt;/p&gt;</text>
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                <text>&lt;span id="docs-internal-guid-4cbe8024-7fff-a956-52c3-404d81e723ec"&gt;&lt;span&gt;10.1111/cbdd.13864&amp;nbsp; &lt;/span&gt;&lt;/span&gt;</text>
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                  <text>Tesis de doctorado, maestría, trabajos de diploma y monografías técnicas</text>
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                  <text>Versiones electrónicas de las tesis de doctorado, maestría y trabajos de diploma de la Facultad de Química, Universidad de la República (UdelaR).&#13;
Incluye únicamente trabajos hasta el año 2023. Los trabajos posteriores se encuentran disponibles en el Repositorio Colibrí.</text>
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                <text>&lt;strong&gt;Desarrollo y evaluaci&amp;oacute;n de potenciales radiotrazadores para Imagenolog&amp;iacute;a Molecular en c&amp;aacute;ncer de mama&lt;/strong&gt;</text>
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                <text>&lt;p&gt;El c&amp;aacute;ncer de mama es la principal neoplasia en mujeres y la segunda causa de muerte por c&amp;aacute;ncer a nivel mundial (s&amp;oacute;lo el c&amp;aacute;ncer de pulm&amp;oacute;n mata a m&amp;aacute;s mujeres).&lt;br /&gt;Aproximadamente dos de cada tres c&amp;aacute;nceres de mama muestran una sobreexpresi&amp;oacute;n de receptores de hormonas, en particular del receptor de estr&amp;oacute;geno (RE) y receptor&lt;br /&gt;de progesterona (RP).&lt;br /&gt;El presente trabajo plantea contribuir al diagn&amp;oacute;stico y caracterizaci&amp;oacute;n del c&amp;aacute;ncer de mama receptor de estr&amp;oacute;geno positivo (RE+), a trav&amp;eacute;s del desarrollo de potenciales radiof&amp;aacute;rmacos para Imagenolog&amp;iacute;a molecular dirigidos al RE.&lt;br /&gt;La primer etapa del trabajo consisti&amp;oacute; en la s&amp;iacute;ntesis, purificaci&amp;oacute;n y formulaci&amp;oacute;n del 16&amp;alpha;-[18F]fluoroestradiol ([18F]FES), radiof&amp;aacute;rmaco considerado como de referencia en Imagenolog&amp;iacute;a de RE en un m&amp;oacute;dulo automatizado de s&amp;iacute;ntesis Synthra RNplus Research.&lt;br /&gt;Una vez puesta a punto la misma y realizados tres lotes pilotos se procedi&amp;oacute; a efectuar estudios in vitro, en donde se emple&amp;oacute; la l&amp;iacute;nea celular MCF-7 portadora de RE, derivadas de un adenocarcinoma mamario humano. Los estudios demostraron una elevada captaci&amp;oacute;n celular, siendo la misma de 6.3 &amp;plusmn; 0.4 %.&lt;br /&gt;Al mismo tiempo, se trabaj&amp;oacute; en la s&amp;iacute;ntesis de ligandos derivados de estradiol para la formaci&amp;oacute;n de compuestos de coordinaci&amp;oacute;n con 99mTc. Para la s&amp;iacute;ntesis de los mismos, se tom&amp;oacute; como reactivo de partida al etinilestradiol, f&amp;aacute;rmaco agonista de los receptores de estr&amp;oacute;genos. Se probaron distintas estrategias sint&amp;eacute;ticas para la obtenci&amp;oacute;n del ligando Cyclam-2-(2-(1H-1,2,3-triazol-1-il)acetamida) estradiol (L1) sin &amp;eacute;xito, lo que llev&amp;oacute; a proponer un nuevo ligando: Cyclam-3-(2-(2-(3-(1H-1,2,3 triazol)propoxi)etoxi)etoxi) propanamina estradiol (L2) que permite la formaci&amp;oacute;n de un complejo de 99mTc. Debido a que no fue posible su adecuada marcaci&amp;oacute;n, se dise&amp;ntilde;&amp;oacute; un tercer ligando: 17[4-((2-azido-1-carboxietil)amino)-N-metilidino-4-oxobutano-1-1aminio)-1H-1.2.3-triazol-1-il] estradiol (L3), que permite la formaci&amp;oacute;n de un complejo de 99mTc(III) &amp;ldquo;4+1&amp;rdquo;, utilizando como coligando a el &amp;aacute;cido 2,2',2''nitrilotriethanethiol-2-((2-carboxietoxi)metil)propano-1,3-di(oxo)dipropanoico (NS3(COOH)3). Dicho complejo fue obtenido con una adecuada pureza radioqu&amp;iacute;mica. Los estudios fisicoqu&amp;iacute;micos demostraron una alta hidrofilia ya que present&amp;oacute; un log P de -2.05 &amp;plusmn; 0.20. El complejo result&amp;oacute; ser estable en plasma a 37&amp;deg;C y en el medio de reacci&amp;oacute;n durante al menos 4 horas. La uni&amp;oacute;n a prote&amp;iacute;nas plasm&amp;aacute;ticas fue moderada siendo la misma de 32 &amp;plusmn; 7 %. Los ensayos in vitro de uni&amp;oacute;n a c&amp;eacute;lulas MCF-7 indicaron ausencia de captaci&amp;oacute;n celular 0.10 &amp;plusmn; 0.02 %, por lo cual no se realizaron estudios in vivo. Se plante&amp;oacute; como posible hip&amp;oacute;tesis que la raz&amp;oacute;n de ausencia de uni&amp;oacute;n pudiera ser el bajo valor de lipofilicidad fuera del rango adecuado para atravesar barreras biol&amp;oacute;gicas.&lt;br /&gt;Los principales logros en el marco de esta tesis fueron: la obtenci&amp;oacute;n del [18F]FES, para su uso en cl&amp;iacute;nica y como est&amp;aacute;ndar de comparaci&amp;oacute;n de potenciales radiof&amp;aacute;rmacos desarrollados y a desarrollar por nuestro grupo de investigaci&amp;oacute;n; por otro lado, se realizaron casi todas las etapas involucradas en el desarrollo de un potencial radiof&amp;aacute;rmaco, desde la selecci&amp;oacute;n del farmac&amp;oacute;foro y radionucleido, s&amp;iacute;ntesis org&amp;aacute;nica, marcaci&amp;oacute;n, estudios fisicoqu&amp;iacute;micos y estudios in vitro.&lt;/p&gt;</text>
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&lt;p&gt;&lt;strong&gt;ADVERTENCIA:&lt;/strong&gt; La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.&lt;/p&gt;</text>
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                <text>Complexes with general formula [RuCl(&amp;eta;6-p-cymene)(P-NR-P)]X (R = CH2Py (Py = pyridine)-[1a]+, CH2Ph (Ph = phenyl)-[1b]+, Ph-[1c] and p-tol (p-tol = p-tolyl)-[1d]+; X = PF6- or BF4-) were evaluated as cytotoxic agents against two cancer cell lines (HeLa and MDA-MB-231). All metal complexes are active in the range of concentrations tested (up to 100 &amp;mu;mol L-1). The IC50 (&amp;mu;mol L-1) values for the metal complexes are lower than that found for cisplatin. The activities are up to 6- and 15-fold higher than cisplatin for HeLa and MDA-MB-231 cancer cell lines, respectively. Studies of DNA binding and DNA cleavage were performed. DNA binding studies revealed a modest hypochromic shift in the metal complexes electronic spectra, indicating a weak interaction with Kb values in the range of 1.7 &amp;times; 103-1.6 &amp;times; 104. Although the cleavage tests revealed that in the dark DNA is not a biological target for these metal complexes, upon blue light irradiation they are activated causing DNA cleavage. Electrochemical studies showed the presence of two independent redox processes, one attributed to the oxidation process of Ru2+ &amp;rarr; Ru3+ (EC process) and the other one to the reduction of Ru2+ &amp;rarr; Ru1+, which is further reduced to Ru0 (ECE mechanism). In both processes, coupled chemical reactions were observed. DFT calculations were performed to support the electrochemical/chemical behavior of the complexes. The reactivity of complex [1b]BF4 with CH3CN was evaluated and two complexes were isolated [2b]BF4 and [3b]BF4. The complex mer-[RuCl(CH3CN)3(P-NCH2Ph-P)]BF4 ([2b]BF4) was isolated after refluxing the precursor [1b]BF4 in CH3CN. Isomerization of [2b]BF4 in CH3CN resulted in the formation of fac-[RuCl(CH3CN)3(P-NCH2Ph-P)]BF4. An attempt to isolate the fac-isomer by adding diethyl ether was unsuccessful, and the complex [3b]BF4 was observed as the major component. The complex [Ru2(&amp;mu;-Cl3)(CH3CN)2(P-NCH2Ph-P)2]BF4 ([3b]BF4) proved to be very stable and can be obtained from both the mer- and the fac-isomers. The molecular structures of [1b]BF4 and [3b]BF4 were solved by single-crystal X-ray diffraction.&#13;
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                <text>As a fundamental part of their chemical education, first-year undergraduate students are substantially involved in laboratory activities. Despite the specific teaching staff choices on the main laboratory aims, students normally receive a vast amount of information during these activities. Apart from understanding theoretical content, fundamental skills such as manipulation, data collection and interpretation should be developed. In this context, learners could feel overwhelmed since they can only process a few pieces of information at a time. Indeed, our experience at the Universidad de la Rep&amp;uacute;blica (Uruguayan public university) shows that many first-year students are in fact not able to cope with all the information they receive during laboratory activities. As a result, many of them only follow the experimental protocol automatically, without gaining significant knowledge or developing the necessary skills. In this work, we assessed the use of new online interactive pre-laboratory activities implemented for 252 first-year university students enrolled in a 12-module General Chemistry laboratory course. The student choice of interactive versus more traditional material was evaluated together with observed preferences regarding the different interactive tools offered. Besides, an online pre-laboratory discussion forum was also implemented and assessed. Both the interactive material and the discussion forum were chosen freely by the majority of students (61% and 79%, respectively). Interestingly, the choice was to some extent modulated by student previous performance. Interactive pre-laboratory material was more frequently chosen by low previous performance students, whereas pre-laboratory forum was preferentially used by high previous performance students. Finally, the influence of these new materials on student laboratory performance was statistically analyzed. Other personal and academic variables were also taken into account. Interactive material access was positively correlated with the final laboratory marks for medium previous performance learners. On the other hand, for lower previous performance students, the academic discussion between teachers and partners promoted by the online forum was positively correlated with their academic performance.</text>
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                <text>Introducci&amp;oacute;n: el c&amp;aacute;ncer de mama representa la primera causa de muerte por c&amp;aacute;ncer en mujeres de Uruguay. Se estima que cerca de 7% son causados por mutaciones en el &amp;aacute;cido desoxirribonucleico germinal. Los costos de la secuenciaci&amp;oacute;n gen&amp;eacute;tica han descendido dram&amp;aacute;ticamente gracias a la aparici&amp;oacute;n de la secuenciaci&amp;oacute;n de nueva generaci&amp;oacute;n (NGS). El cambio tecnol&amp;oacute;gico abri&amp;oacute; una nueva etapa en el estudio del c&amp;aacute;ncer hereditario en nuestro pa&amp;iacute;s. Objetivo: comunicar los resultados de la utilizaci&amp;oacute;n de tecnolog&amp;iacute;a NGS y paneles multig&amp;eacute;nicos en familias uruguayas con alto riesgo de c&amp;aacute;ncer de mama hereditario. Pacientes y m&amp;eacute;todo: se secuenciaron 135 familias de alto riesgo que proven&amp;iacute;an de la consulta de consejer&amp;iacute;a gen&amp;eacute;tica que funciona en el Grupo Colaborativo Uruguayo: Investigaci&amp;oacute;n de afecciones oncol&amp;oacute;gicas hereditarias. Cuando la historia familiar suger&amp;iacute;a claramente un s&amp;iacute;ndrome de c&amp;aacute;ncer de mama y ovario hereditario se efectu&amp;oacute; secuenciaci&amp;oacute;n NGS exclusiva de los genes BRCA1 y 2; cuando el patr&amp;oacute;n familiar no configuraba claramente se utiliz&amp;oacute; un panel multig&amp;eacute;nico. Resultados: se efectu&amp;oacute; NGS exclusiva de genes BRCA1 y 2 en 62 familias y un panel multig&amp;eacute;nico en 73 familias. Se identificaron en total 29 mutaciones pat&amp;oacute;genas (21 en genes BRCA y 8 en otros genes). Dos de ellas fueron noveles y tres pueden considerarse recurrentes en la poblaci&amp;oacute;n uruguaya. Conclusiones: este trabajo es el primero en Uruguay en reportar el resultado de esta nueva tecnolog&amp;iacute;a en el c&amp;aacute;ncer de mama hereditario. El hallazgo de 29 mutaciones pat&amp;oacute;genas nos ayuda a delinear el perfil mutacional de nuestro pa&amp;iacute;s. C&amp;aacute;ncer de mama y ovario hereditario en Uruguay: resultados del screening para mutaciones en genes de susceptibilidad por secuenciaci&amp;oacute;n de nueva generaci&amp;oacute;n.</text>
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                <text>Revista M&amp;eacute;dica del Uruguay&amp;nbsp; v. 33, no. 2, 2017. -- p. 97-102</text>
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                <text>Informaci&amp;oacute;n sobre Derechos de Autor (Por favor lea este aviso antes de abrir los documentos u objetos) La legislaci&amp;oacute;n uruguaya protege el derecho de autor sobre toda creaci&amp;oacute;n literaria, cient&amp;iacute;fica o art&amp;iacute;stica, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeci&amp;oacute;n a lo establecido por el derecho com&amp;uacute;n y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006) ADVERTENCIA - La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.</text>
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                <text>Ingl&amp;eacute;s</text>
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              <name>Description</name>
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                <text>&lt;strong&gt;Consumo de carne y leche uruguayos reduce la posibilidad de c&amp;aacute;ncer de mama&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Grompone, Antonia&lt;/strong&gt;</text>
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            <description>A related resource from which the described resource is derived</description>
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                <text>Ultimas Noticias 14 de mayo 2003</text>
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              <elementText elementTextId="464978">
                <text>&lt;p&gt;&lt;strong&gt;Informaci&amp;oacute;n sobre Derechos de Autor&lt;/strong&gt;&lt;/p&gt;&#13;
&lt;p&gt;(Por favor lea este aviso antes de abrir los documentos u objetos)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt;La legislaci&amp;oacute;n uruguaya protege el derecho&lt;/strong&gt; de autor sobre toda creaci&amp;oacute;n literaria, cient&amp;iacute;fica o art&amp;iacute;stica, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeci&amp;oacute;n a lo establecido por el derecho com&amp;uacute;n y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt; ADVERTENCIA&lt;/strong&gt; - La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.&lt;/p&gt;</text>
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                <text>Papel</text>
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                  <text>Bibliografía Nacional Química</text>
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                  <text>Contiene la producción científica nacional de los profesionales químicos e investigadores, durante el período 1929 hasta la fecha.</text>
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                <text>Assessment of the presence of estrogen receptors in breast cancer is crucial for treatment planning. With the objective to develop a potential agent for estrogen receptors imaging, we present the development and characterization of a 99mTc‐tricarbonyl&amp;ndash;labelled estradiol derivative. Using ethinylestradiol as starting material, an estradiol derivative bearing a 1,4‐disubstituted 1,2,3‐triazole&amp;ndash;containing tridentate ligand system was synthesized by &amp;ldquo;Click Chemistry&amp;rdquo; and fully characterized. Labelling with high yield and radiochemical purity was achieved through the formation of a 99mTc‐tricarbonyl complex. The radiolabelled compound was stable, exhibited moderate binding to plasma protein (approximately 33%) and lipophilicity in the adequate range (logP 1.3 &amp;plusmn; 0.1 at pH 7.4). Studies in MCF7 showed promising uptake values (approximately 2%). However, more than 50% of the activity is quickly released from the cell. Biodistribution experiments in normal rats confirmed the expected &amp;ldquo;in vivo&amp;rdquo; stability of the radiotracer but showed very high gastrointestinal and liver activity, which is inconvenient for in vivo applications. Taking into consideration the well‐documented influence of the chelating system in the physicochemical and biological behaviour of technetium‐labelled small biomolecules, research will be continued using the same pharmacophore but different complexation modalities of technetium.</text>
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                <text>&lt;strong&gt;Tejer&amp;iacute;a, Mar&amp;iacute;a Emilia&lt;/strong&gt;</text>
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                <text>&lt;p&gt;&lt;strong&gt;Informaci&amp;oacute;n sobre Derechos de Autor&lt;/strong&gt;&lt;/p&gt;&#13;
&lt;p&gt;(Por favor lea este aviso antes de abrir los documentos u objetos)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt;La legislaci&amp;oacute;n uruguaya protege el derecho&lt;/strong&gt; de autor sobre toda creaci&amp;oacute;n literaria, cient&amp;iacute;fica o art&amp;iacute;stica, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeci&amp;oacute;n a lo establecido por el derecho com&amp;uacute;n y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt; ADVERTENCIA -&lt;/strong&gt; La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.&lt;/p&gt;</text>
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                  <text>Bibliografía Nacional Química</text>
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                  <text>Contiene la producción científica nacional de los profesionales químicos e investigadores, durante el período 1929 hasta la fecha.</text>
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                <text>&lt;strong&gt;In vitro and in vivo uptake studies of PAMAM G4.5 dendrimers in breast cancer&lt;/strong&gt;</text>
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                <text>ANTITUMORALES</text>
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                <text>ADMINISTRACION DE FARMACOS</text>
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                <text>Background Breast cancer is the second leading cause of cancer death worldwide. Nanotechnology approaches can overcome the side effects of chemotherapy as well as improve the efficacy of drugs. Dendrimers are nanometric size polymers which are suitable as drug delivery systems. To the best of our knowledge, studies on the application of PAMAM G4.5 (polyamidoamine half generation 4) dendrimers as potential drug delivery systems in breast cancer have not been reported. In this work we developed a PAMAM G4.5 dendrimer containing FITC (fluorescein isothiocyanate) dye to study their uptake by murine breast cancer cells and BALB/c mice breast tumors. Results We performed a reaction between FITC and PAMAM G4.5 dendrimers which were previously derivatized with piperazine (linker molecule), characterized them by 1H NMR (proton nuclear magnetic resonance) spectroscopy and MALDI-TOF (matrix-assisted laser desorption/ionization- time-of-flight) mass spectrometry. The experimental data indicated that 2 FITC molecules could be bound covalently at the PAMAM G4.5 dendrimer surface, with 17 FITC molecules probably occluded in PAMAM dendrimers cavity. PAMAM-FITC dendrimer (PAMAM G4.5-piperazinyl-FITC dendrimer) size distribution was evaluated by DLS (dynamic light scattering) and TEM (transmission electron microscopy). The nanoparticle hydrodynamic size was 96.3 &amp;plusmn; 1.4 nm with a PdI (polydispersion index) of 0.0296 &amp;plusmn; 0.0171, and the size distribution measured by TEM was 44.2 &amp;plusmn; 9.2 nm. PAMAM-FITC dendrimers were neither cytotoxic in 4T1 cells nor hemolytic up to 24 h of incubation. In addition, they were uptaken in vitro by 4T1 cells and in vivo by BALB/c mice breast tumors. PAMAM G4.5-piperazinyl-FITC dendrimer intracellular distribution was observed through histologic analysis of the tumor by laser confocal microscopy.</text>
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                <text>&lt;strong&gt;Oddone, Natalia&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Lecot, Nicole&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Fern&amp;aacute;ndez , Marcelo&lt;/strong&gt;</text>
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                <text>&lt;a title="Curriculum Vitae" href="http://buscadores.anii.org.uy/buscador_sni/exportador/ExportarPdf?hash=e763cfcf3da319d62989630831835a77" target="_blank"&gt;&lt;strong&gt;Rodr&amp;iacute;guez Haralambides, Alejandra&lt;/strong&gt;&lt;/a&gt;</text>
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                <text>&lt;strong&gt;Cabral, Pablo&lt;/strong&gt;</text>
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                <text>&lt;strong&gt;Benech, Juan Claudio&lt;/strong&gt;</text>
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                <text>Journal of Nanobiotechnology v. 14, 2016. -- 12p.-- e45</text>
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                <text>&lt;p&gt;&lt;strong&gt;Informaci&amp;oacute;n sobre Derechos de Autor&lt;/strong&gt;&lt;/p&gt;&#13;
&lt;p&gt;(Por favor lea este aviso antes de abrir los documentos u objetos)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt;La legislaci&amp;oacute;n uruguaya protege el derecho de autor&lt;/strong&gt; sobre toda creaci&amp;oacute;n literaria, cient&amp;iacute;fica o art&amp;iacute;stica, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeci&amp;oacute;n a lo establecido por el derecho com&amp;uacute;n y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)&lt;/p&gt;&#13;
&lt;p&gt;&lt;strong&gt;ADVERTENCIA -&lt;/strong&gt; La consulta de este documento queda condicionada a la aceptaci&amp;oacute;n de las siguientes condiciones de uso: Este documento es &amp;uacute;nicamente para usos privados enmarcados en actividades de investigaci&amp;oacute;n y docencia. No se autoriza su reproducci&amp;oacute;n con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilizaci&amp;oacute;n o cita de partes debe indicarse el nombre de la persona autora.&lt;/p&gt;</text>
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