Efectos de un programa de intervención para aumentar la reflexividad y la planificación en un ámbito escolar de alto riesgo por pobreza; Effects of a training program to increase reflexivity and planning in a school area at risk due to poverty Arán Filippetti, Vanessa; Richaud, Maria Cristina El propósito de este estudio fue analizar las diferencias en el estilo cognitivo reflexividad-impulsividad (R-I) y en la capacidad de planificación según el riesgo social, y poner a prueba la eficacia de un programa de intervención integrado a la tarea curricular áulica en un contexto de pobreza. Se trabajó con una muestra de 110 niños de 6 años de edad: experimental (N = 47) y control (N = 22) en riesgo por pobreza y un grupo control sin riesgo (N = 41) pertenecientes a Entre Ríos, Argentina. Los resultados indican claras diferencias en el patrón de respuestas R-I y en la planificación según el riesgo social, lo que apunta al papel de la experiencia en el desarrollo de estas funciones. Además brindan apoyo a la hipótesis que supone la posibilidad de aumentar la disposición reflexiva mediante un entrenamiento sistematizado.; The aim of this paper was to analyze the differences Reflexivity-Impulsivity in cognitive style and planning as regards social risk and to test the efficacy of a reflexivity training program integrated to the curriculum in a poverty context. We have worked with a sample of 110 6-year-old children: an experimental group (N = 47) a control group (N = 22) at risk and a control group not at risk (N = 41). All of them live in Entre Ríos, Argentina. The results indicate differences in R-I response patterns and planning in terms of social risk and emphasize the role of experience in the development of these functions. Besides, they support the hypothesis which holds the possibility to improve the reflexive disposition after program training.

Vibrio cholerae in waters of the Sunderban mangrove: relationship with biogeochemical parameters and chitin in seston size fractions Lara, Ruben Jose; Neogi, Sucharit B.; Islam, Mohammad Sirajul; Mahmud, Zahid H.; Islam, Shafiqul; Paul, Debasish; Demoz, Biniam; Yamasaki, Shinji; Nair, Gopinath B.; Kattner, Gerhard Wetland dynamics are probably linked to cholera endemicity in South Asia. We focus on links between Vibrio cholerae abundance, chitin content and suspended particle load in size fractions of suspended particulate matter (SPM) along the salinity gradient of Sunderban mangrove waters. SPM decreased downstream, while salinity increased from 0.2 to 4. Particulate organic carbon (90 ± 25 lM) and nitrogen (9.1 ± 3.3 lM) highly correlated with SPM and turbidity, suggesting a significant contribution of fine particles to organic matter. Total chitin ranged 1–2 mg/l and decreased downstream. The distribution among size fractions of SPM, chitin and V. cholerae O1 (the bacterial serogroup mainly associated with cholera epidemics) was similar, with *98% of the total in the fraction \20 lm. In comparison, the number of V. cholerae O1 attached to zooplankton and microplankton size classes [20 lm was almost negligible, in contrast to usual assumptions. Thus, microdetritus, nanoplankton and fungal cells in size classes \20 lm represent a chitinaceous substrate on which V. cholerae can grow and survive. Total bacteria, cultivable vibrios and V. cholera O1 increased 5–10 times downstream, together with salinity and nitrite concentration. Overall, nitrate and silicate concentrations were relatively constant ([22 lM N and 100 lM Si). However, nitrite increased *9 times in the outer sector, reaching *1.2 lM N, probably as a result of increased abundance of nitrate-reducing vibrios. A characterization of Vibrio habitats that takes account of the presence of nitrate-reducing bacteria could improve the understanding of both mangrove nitrogen cycling and cholera seasonality.

Can yield potential be increased by manipulation of reproductive partitioning in quinoa (Chenopodium quinoa)? Evidence from Gibberellic Acid synthesis inhibition using Paclobutrazol Gómez, María Belén; Aguirre Castro, P.; Mignone, C.; Bertero, Hector Daniel One factor conditioning quinoa (Chenopodium quinoa Willd.) adoption is the need to increase yield. This paper analyses the effect that Paclobutrazol, a GA synthesis inhibitor, produces on yield, biomass, partitioning, seed number and weight in quinoa. Two experiments were conducted under field conditions: one compared a tall genotype (2-Want) with a shorter genotype (NL-6); while the other analysed seed yield and its components using the 2-Want genotype. As a consequence of Paclobutrazol application in the one-genotype experiment, plant height decreased from 197 to 138 cm, yield increased from 517 to 791 g m–2, seed numbers rose from 308 000 to 432 000 seeds per m2, and the harvest index increased from 0.282 to 0.398 g g–1. Biomass accumulation and seed weight were not affected. The leaf area index was reduced by Paclobutrazol but radiation interception was only marginally reduced; soil plant analysis development (SPAD) values and specific leaf weight were increased, but radiation use efficiency was not affected by treatments. Root biomass and lateral roots tended to increase under Paclobutrazol treatment. Genotypes were compared until the end of flowering and similar responses were obtained. Higher yields could be obtained in quinoa if reproductive partitioning was increased, turning it into a good candidate in the search for high quality protein sources.

An extension of the Green-Ampt model to decreasing flooding depth conditions, with efficient dimensionless parametric solution Barrera, Daniel Florencio; Masuelli, Sergio The theoretical formulation of the Green-Ampt infiltration model has been extended to conditions of decreasing flooding depth in an isolated system. By defining dimensionless variables of flooding depth s and time τ, an implicit dimensionless equation τ(s) was obtained, which contains a single fundamental dimensionless parameter γ controlling the process, named “infiltration delay parameter”. The characteristics and functional behaviour of γ were analysed, and its physical meaning discussed. A parametric expression s(τ) has been obtained, which uses a unique descriptive parameter a, which in turn depends only on γ and on four generic coefficients valid for a wide range of soil properties and conditions occurring in nature. By means of numerical simulations using different values of soil parameters and initial flooding depths, it was proved that the proposed parametric function generates similar infiltration rates and cumulative storages to those that are obtained starting from Darcy's equation in the extended Green-Ampt scheme.

Diverse stages of sex-chromosome differentiation in tinamid birds: evidence from crossover analysis in Eudromia elegans and Crypturellus tataupa Pigozzi, Maria Ines All extant birds share the same sex-chromosome system: ZZ males and ZW females with striking differences in the stages of sex-chromosome differentiation between the primitive palaeognathus ratites and the large majority of avian species grouped within neognaths. Evolutionarily close to ratites is the neotropical order Tinamiformes that has been scarcely explored regarding their ZW pair morphology and constitution. Tinamous, when compared to ratites, constitute a large group among Palaeognathae, therefore, exploring the extent of homology between the Z and W chromosomes in this group might reveal key features on the evolution of the avian sex chromosomes. We mapped MLH1 foci that are crossover markers on pachytene bivalents to determine the size and localization of the homologous region shared by the Z and W chromosomes in two tinamous: Eudromia elegans and Crypturellus tataupa. We found that the homologous (pseudoautosomal) region differ significantly in size between these two species. They both have a single recombination event on the long arm of the acrocentric Z and W chromosomes. However, in E. elegans the pseudoautosomal region occupies one-fourth of the W chromosome, while in C. tataupa it is restricted to the tip of the long arm of the W. The W chromosomes in these two species differ in their heterochromatin content: in E. elegans it shows a terminal euchromatic segment and in C. tataupa is completely heterochromatic. These results show that tinamous have ZW pairs with more diversified stages of differentiation compared to ratites. Finally, the idea that the avian proto-sex chromosomes started to diverge from the end of the long arm towards the centromere of an acrocentric pair is discussed.

Vicenin-2, a potential anti-inflammatory constituent of Urtica circularis Marrassini, Carla; Davicino, Roberto Carlos; Acevedo, Cristina; Anesini, Claudia Alejandra; Gorzalczany, Susana; Ferraro, Graciela Ester Vicenin-2, a flavonoid glycoside, was isolated and identified from an ethanol extract of the aerial parts of Urtica circularis. This crude extract was found to possess significant anti-inflammatory activity in a carrageenan-induced rat hind paw edema model (41.5% inhibition at a dose of 300 mg/kg; ip). The effects of 1 on several inflammatory mediators were investigated. In cultured murine macrophages, this compound modified LPS-induced total nitrite and TNF-R production, in addition to the LPS-induced translocation of the nuclear factor NF-kB.

Ovarian steroid receptors and activated MAPK in the regional decidualization in rats Vallejo, Griselda; Mestre Citrinovitz, Ana Cecilia; Moenckendiek. Verena; Grümmer, Ruth; Winterhager, Elke; Saragueta, Patricia Esther Though the decidua serves a critical function in implantation, the hormonal regulated pathway in decidualization is still elusive. Here we describe in detail the regional distribution and the effects of progesterone receptors (PGR), estrogen receptors (ESR), and MAPK activation on decidualization. We showed an increase in PGR A, PGR B, ESR1, and phosphorylated MAPK3-1 proteins (p-MAPK3-1), but not in ESR2, in the decidual tissue up to Day 8 of pregnancy. PGR was predominantly found in the nuclei of mesometrial decidual cells and of undifferentiated stromal cells where it colocalizes with ESR2 and ESR1. In the antimesometrial decidua, all the receptors showed cytoplasmic localization. MAPK was activated exclusively in undifferentiated stromal cells of the junctional zone between the antimesometrial and mesometrial decidua and at the border of the antimesometrial decidua. Treatment with the progesterone antagonist onapristone and/or the estrogen antagonist faslodex reduced the extent of decidual tissue and downregulated the levels of PGR and ESR1. The expression level of ESR2 was affected only by the progesterone receptor antagonist, while neither the antiprogestin nor the antiestrogen significantly modified the p-MAPK3-1 level. The inhibition of MAPK3-1 phosphorylation by PD98059 impaired the extent of decidualization and the closure reaction of the implantation chamber, and significantly downregulated ESR1. These results confirm a role of both steroid receptors in the growth and differentiation of the different decidual regions and suggest a new function for p-MAPK3-1 in regulating expression levels of ESR1, thereby maintaining the proliferation capacity of stromal cells and limiting the differentiation process in specified regions of decidual tissues.

CTX-M-14 β-lactamase-producing Citrobacter freundii isolated in Venezuela Millan, Beatriz; Ghiglione, Barbara; Diaz, Tulia; Gutkind, Gabriel Osvaldo; Araque, María A clinical isolate of C. freundii with reduced susceptibility to extended-spectrum β-lactams from a woman with cystocele associated with recurrent urinary tract infection was analyzed. Susceptibility tests, double disk synergy tests (DDST) and enzymatic activity by the agar iodometric method suggested the presence of ESBLs. Conjugation experiments revealed the presence of a large conjugative plasmid (pLM07/20) with an exclusive FrepB replicon type (IncF/FIB). PCR analysis and sequencing confirmed the presence of the blaCTX-M-14 gene in the pLM07/20 from C. freundii.LM07/10. Although this is the first report of CTX-M-14 in Venezuela, we alert the medical community that future increase of these β-lactamases in our city could be due to dissemination of plasmids into bacterial populations.

Visualization and quantification of cytotoxicity mediated by antibodies using imaging flow cytometry Helguera, Gustavo Fernando; Rodríguez, José A.; Luria Pérez, Rosendo; Henery, Shannon; Catterton, Paul; Bregni, Carlos ; George, Thaddeus C.; Martínez Maza, Otoniel; Penichet, Manuel L. Conventional approaches for the detection of antibody dependent cell-mediated cytotoxicity (ADCC) activity rely on quantification of the release of traceable compounds from target cells or flow cytometry analysis of population-wide phenomena. We report a new method for the direct imaging and quantification of ADCC of cancer cells. The proposed method using imaging flow cytometry combines the statistical power of flow cytometry with the analytical advantages of cell imaging, providing a novel and more comprehensive perspective of effector/target cell interactions during ADCC events. With this method we can quantify and show in detail the morphological changes in target and effector cells, their apoptotic index, the physical interaction between effector and target cells, and a directional transfer of cytosolic contents from effector to target cells. As a model system we used the therapeutic anti-CD20 antibody rituximab to target CFSE labeled Ramos human Burkitt's lymphoma cells, to CMTPX-labeled human monocytic U-937 effector cells. We expect that similar studies using different effector and target cell populations may contribute to the pre-clinical evaluation of therapeutic antibodies and help to identify mechanisms that could be beneficial in the immunotherapy of cancer.

A new species and new records of Cercophora from Argentina Catania, Myriam del Valle; Romero, Andrea Irene; Huhndorf, Sabine M.; Miller, Andrew N. Three species of Cercophora were found during a survey of the biodiversity of microfungi in northwest Argentina. Cercophora argentina possesses a unique combination of morphological characters and is described as a new species, while C. costaricensis and C. solaris are reported as new records for Argentina. Other species of Cercophora known from this region include C. natalita and C. coprogena, which is fully illustrated for the first time and determined herein to be a synonym of C. californica. All other species are described and illustrated.

Elevo a la superioridad: Un estado de la cuestión sobre la historia de los inspectores en Argentina Southwell, Myriam Monica; Manzione, Gregoria Maria Ana Este artículo se propone sistematizar la investigación existente sobre los inspectores escolares en Argentina. Nos interesa en este punto tratar de poner a disposición algunas notas preliminares para una historia de la inspección a nivel nacional. Para ello, examinaremos esa tarea en relación con tres tensiones que animaron esas estructuras e instituciones: la cuestión federal, la relación entre estado y sociedad civil y la diferenciación entre un saber burocrático y un saber pedagógico. Asimismo, nos proponemos contribuir con el debate que algunos de los trabajos previos han planteado acerca de si la tarea de la inspección fue desarrollada en términos de la vigilancia y prescripción de las políticas centrales o si esos roles fueron ejercidos junto con un carácter más autónomo y creativo según el propio criterio profesional.; The article focuses on a systematization of previous investigations on school inspectors in Argentina. Our aim is to point out some notes and referencies in order to contribute for a history of inspectors in our country. This analysis involves three central topics related to inspectors task: federal question, relation between state and civil society and a diferentiation between bureaucratic and pedagogical knowledge. Moreover, we want to contribute in a existing debate about inspectors 'actions was only a result of application of central policies, control and prescription or its practices had also a significant creative and autonomous character.

Inhibitory effects of ghrelin on sexual behavior: Role of the peptide in the receptivity reduction induced by food restriction in mice Bertoldi, María Laura; Luque, E. M.; Carlini, Valeria Paola; Vincenti, Laura María; Stutz, Graciela; Santillán, M.E.; Ruiz, R. D.; Fiol de Cuneo, Marta; Martini, Ana Carolina Ghrelin (Ghr) is a gut/hypothalamus peptide with inhibitory actions on reproductive physiology; however, there are no previous reports of its role on estrous behavior. Under the hypothesis that the increase of plasma Ghr during food restriction (FR) is responsible for receptivity reduction, we intended to evaluate the receptivity percentage of female mice subjected to: exp. 1) acute and chronic FR and Ghr administration (3 nmol/animal/day, s. c.) and exp. 2) the co-administration of a ghrelin antagonist [ant=(d-Lys3)-GHRP-6; 6 nmol/animal/day s. c.]. All females were ovariectomized, primed with steroids, trained, and randomly subjected every week to each one of several protocols, followed by a behavioral test. Experiment 1 (n=8): basal, no treatment; acute FR (aFR), 24-h fasting; chronic FR (cFR), 50% FR for 5 days; acute ghrelin (aGhr), Ghr 30 min before test and chronic ghrelin (cGhr), Ghr for 5 days. Except for cGhr, all treatments significantly decreased the percentage of receptivity (mean±SEM): basal 61.9±6.0, aFR 33.1±8.1, cFR 18.8±7.7, aGhr 45.6±10.6, p<0.05 vs. basal. In exp. 2 (n=11), except for cFR+ant (55.0±6.4) the co-administration of the antagonist reversed the deleterious effects detected in exp. 1: basal 70.9±5.4; aFR+ant 72.3±7.6; aGhr+ant 73.6±4.7. As expected, the administration of vehicle or antagonist alone did not modify receptivity. Besides, we found a significant correlation between percentage of body weight loss and percentage of receptivity reduction (r=0.62, p=0.0004). This is the first study demonstrating that ghrelin is able to inhibit female mice sexual behavior and that is involved, at least in part, in receptivity reduction after food scarcity.

¿Qué nos enseñan los 20 años del Mercosur? Botto, Mercedes Isabel A 20 años de la puesta en marcha del Mercosur, no solamente se amplió el número de sus integrantes, sino que asistimos a cambios políticos e ideológicos en los países miembros. Si la piedra fundamental de la integración fue colocada en un contexto de hegemonía neoliberal, hoy se exploran otras vías, en las que se asigna al Estado un rol inevitable en el desarrollo. En ese marco, en la reunión de Córdoba de 2006, se lanzó la etapa del «Mercosur Social y Productivo», que procura revertir el desencanto de un proceso con excesivo énfasis en las políticas comerciales y con muchas debilidades en áreas como educación, integración productiva y políticas medioambientales.; Twenty years since the launch of Mercosur, not only has the number of members grown, but we have also witnessed political and ideological changes in member states. If the fundamental pillar of integration was laid in a hegemonic neoliberal context, today other paths have been explored, in which the State has been given the inevitable role of development. As a result, at the 2006 summit in Córdoba the «Social and Productive Mercosur» stage was launched, which endeavours to revert the disenchantment in a process with excessive emphasis in commercial policies and with a great deal of weakness in areas like education, productive integration and environmental policies.

Normas permisivas y clausura de los sistemas normativos Navarro, Pablo Eugenio En este trabajo analizo la autonomía y relevancia normativa de las normas permisivas. En especial, mis propósitos principales son revisar dos tesis escépticas: (i) los permisos y las normas permisivas pueden reducirse a otras formas normativas, e.g. derogación de prohibiciones, y (ii) no se producen diferencias significativas cuando se permite una conducta que no había sido previamente regulada. Ambas tesis son examinadas en relación a la naturaleza y función del principio de clausura normativa (todo lo que no está prohibido está permitido). La conclusión de este trabajo es que las normas permisivas, y en particular las normas de clausura, pueden cumplir una importante función en los sistemas normativos y son una herramienta útil para analizar otros problemas como las lagunas del derecho y la discreción judicial.

Construcción de rutinas espaciales y sus efectos en las dinámicas de inclusión-exclusión del activismo LGTB en Córdoba, Argentina; Spatial routines and inclusion/exclusion dynamics among LGBT activists in Córdoba, Argentina; Construção de rotinas espaciais e seus efeitos nas dinâmicas de inclusão-exclusão do ativismo LGTB em Córdoba, Argentina Rabbia, Hugo Hernán; Iosa, Tomas Abraham El presente artículo explora la relación entre espacialidad y acción política al interior del movimiento LGTB de Córdoba, Argentina. Se focaliza en la construcción de rutinas espaciales como determinante de la estratificación social en el activismo LGTB. Considerando la trayectoria de los diversos grupos en la militancia "activistas históricos vs. recientes" se indagan usos diferenciales del espacio y sus representaciones, así como sus efectos sobre las dinámicas de inclusión-exclusión en una acción política concreta: la primera marcha local del Orgullo y la Diversidad realizada en noviembre de 2009. Los datos generados mediante registro de observaciones de campo y entrevistas revelan que la emergencia de nuevos grupos de activistas a finales de la presente década implicó un desplazamiento de las rutinas espaciales desde la periferia al centro de la ciudad. Este proceso conlleva dinámicas de inclusión-exclusión que determinan la estructura social del activismo, condicionando el objetivo de lograr una convocatoria integrada por un amplio espectro social de participantes.

Cariotipos de Liolaemus quilmes y Liolaemus wiegmannii y comparación con otros taxones del grupo boulengeri; Karyotypes of Liolaemus quilmes and Liolaemus wiegmannii and its comparison with other taxa of the boulengeri group Aiassa, Delia Elba; Gorla, Nora Bibiana Maria Se describe el cariotipo de Liolaemus quilmes (2n= 32), que no estaba mostrado previamente, y el de Liolaemus wiegmannii (2n= 32), que difiere de otros informes para la especie obtenidos a partir de animales geográficamente muy distantes de los estudiados en este trabajo. Se analizaron metafases de médula ósea y epitelio intestinal de dos ejemplares de cada especie. Ambas presentan la morfología de seis pares de macrocromosomas metacéntricos (M) y submetacéntricos (SM), el par de microcromosomas número (#)7 con morfología acrocéntrico-telocéntrico (A-T) y los microcromosomas #8 y 9 con morfo- logía M-SM, el resto de los microcromosomas son puntiformes. Los pares #7, 8 y 9 de L. quilmes son en promedio un 21% más grandes que los de L. wiegmannii y en este punto del desarrollo citogenético alcanzado para el género es la úni- ca característica que a nivel de cariotipo permite diferenciar am- bas especies. Las otras especies del grupo boulengeri con estudios citogenéticos efectuados presentan cariotipos con 2n= 28, 32, 34 y 36. Solamente L. riojanus presenta 2n= 32 al igual que L. quilmes y L. wiegmannii, pero con diferencias morfológicas y de longitud cromosómica en los tres primeros pares de microcromosomas (pares #7, 8 y 9). Se destaca la importan-cia de estos tres pares de cromosomas para las diferencias interespecíficas dentro del grupo. Palabras clave: Liolaemus, L. quilmes, L. wiegmannii, grupo boulengeri, cariotipo have 2n= 28, 32, 34 and 36. Only L. riojanus shows 2n= 32 like L. quilmes and L. wiegmannii but with morphologic and chromosome length differences in the first three pairs of microchromosomes # 7, 8 y 9. It is recognize the importance of these pairs in the inter-specific differences among the group.

La Misión Pentecostal Escandinava en el Chaco Argentino: Etapa formativa (1914-1945); Scandinavian pentecostal mission in the argentine chaco: The first stage (1914-1945) Ceriani Cernadas, Cesar Roberto El trabajo propone una etnografía histórica sobre la misión pentecostal escandinava entre los aborígenes del Chaco Argentino durante su período formativo. Fue el misionero noruego Berger Johnsen (1888-1945) quien se instaló en el pueblo de Embarcación (provincia de Salta) en 1914 con el objetivo de organizar una base misionera para el trabajo evangélico. La indagación pretende sumar conocimiento sobre esta corriente olvidada en los estudios sobre evangelización protestante en la región chaqueña tomando en cuenta cuatro ejes: 1. los valores, el imaginario y las prácticas del misionero nórdico; 2. la recepción aborigen del mensaje pentecostal, observada en los dirigentes y la memoria de los habitantes; 3. la coyuntura regional, religiosa, política y económica, que enmarcó estructuralmente el emprendimiento; 4. la realidad cultural sui generis de la misión de Embarcación, conformada por diversos grupos étnicos del corazón chaqueño y establecida en un naciente pueblo criollo.; This paper proposes an historical ethnography of the Scandinavian Pentecostal mission among the aboriginal people of the Argentinean Chaco focusing on its former period. In 1914 a Norwegian missionary, Berger Johnsen (1888-1945), established a Pentecostal base in Embarcación (Province of Salta) in order to embrace evangelical work. This study tries to add knowledge to this neglected trend in the studies about Protestant evangelism in the Chaco region. This will be done taking into account four topics: 1. the values, representations and practices of the Nordic missionary; 2. the aboriginal appropriation of the Pentecostal message; 3. the regional context, in terms of religion, politics and economy, framing the missionary enterprise; 4. the sui generis cultural reality of Embarcación mission, characterized by the presence of different ethnic groups from the central Chaco and a novel criollo town.

Wirkungen eines deutschen Insolvenz-verfahrens bei Vermögen im Ausland- Unterschiedliche Regelungsansätze im Internationalen Insolvenzrecht am Beispiel Argentiniens Miguens, Héctor José; Esser, H. Philipp Régimen del sistema argentino de derecho internacional privado de la insolvencia conforme el art. 4 de la ley concursal argentina vigente con una comparación con el sistema concursal internacional alemán.

Trasplante intestinal en pediatría: Análisis de la primera serie de receptores en la Argentina; Intestinal transplantation in pediatrics: Analysis of the first recipient series in Argentina Trentadue, Julio; Rumbo, Carolina; Garcia Hervás, Dolores; Saá, Gladys; Martínez, María Inés; Orce, Guillermo; Fernández, Adriana; Gondolesi, Gabriel Eduardo El presente trabajo comunica la evolución posoperatoria inmediata y alejada de los pacientes pediátricos trasplantados en un único centro en la Argentina, desde marzo de 2006 hasta marzo de 2010, en variables demográficas, indicaciones, contraindicaciones, evolución y supervivencia de pacientes e injerto. Basándose en los resultados se puede concluir que el trasplante intestinal debe ser considerado como un tratamiento válido para todos aquellos pacientes que presenten insuficiencia intestinal, con complicaciones del soporte parenteral. Los resultados adquiridos en nuestro programa son similares a los comunicados internacionalmente y abren una nueva perspectiva para un grupo especial de niños que carecían de solución en nuestro medio.; The present is a retrospective analysis of all pediatric patients that underwent intestinal transplant from march 2006 to march 2010, describing demographics, indications, contraindications, clinical follow up and survival in a single center in Argentina. Based on the results shown one can conclude that intestinal transplant should be considered as a valid treatment for patients with intestinal insufficiency and complications related to parenteral nutrition. The results of our program are similar to those reported in the international Intestinal Transplant Registry. This opens a new perspective to a special population that otherwise would not have any other therapeutic option.

La materialidad de la sombra: Abyección y cuerpo en la definición de la basura D'hers, Victoria En las páginas que siguen ahondamos en la relación entre la experiencia de vivir en basurales y la definición propia de la basura desde esa experiencia. ¿Cómo pensar lo definido como tal en ese territorio particular? A partir del análisis de los asentamientos en basurales a cielo abierto, planteamos la necesidad de estudiar qué rol tiene la emoción y la corporalidad en la construcción de esa realidad. Así, profundizamos el análisis bajo la idea de lo abyecto, lo otro teniendo en cuenta que la definición tradicional de basura implica tal estado de ser la sombra, lo desechado. Este análisis toma relevancia en el marco de dominación y violencia simbólica de Latinoamérica en tanto países poscoloniales, bajo lógicas de silenciamiento y subalternización (cfr. Grosso 2007). Sentimos la urgencia política y objetivo central de analizar cómo operan estos silenciamientos, en tanto dinámicas de acostumbramiento a nivel sistemático, en tanto parte de los mecanismos de soportabilidad social (cfr. Scribano). Hacemos referencia tanto a la discusión teórica como a su correlato en el trabajo de campo en asentamientos del conurbano de la Provincia de Buenos Aires, Argentina. Dicho trabajo está aún en proceso, por lo que presentamos aquí líneas de pensamiento en elaboración.