An unusual translocation, t(1;11)(q21;q23), in a case of chronic myeloid leukemia with a cryptic Philadelphia chromosome

Chronic myeloid leukemia is characterized by the translocation t(9;22)(q34;q11) (Philadelphia chromosome). Although it is not frequent, additional chromosome abnormalities can be detected at diagnosis and some of them have been associated with adverse cytogenetic and molecular outcome. We report a case of Chronic myeloid leukemia presenting the translocation t(1;11)(q21;q23) and a cryptic Philadelphia chromosome. The presence of additional chromosome abnormalities could generate greater genetic instability, promoting the emergence of further alterations. Our findings suggest that t(1;11)(q21;q23) avoided good response to tyrosine kinase inhibitors therapy. The patient evolves with primary resistance and subsequently at the recent control the T315I mutation was detected.Fil: Gutierrez, Leandro German. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; ArgentinaFil: Noriega, Maria Fernanda. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Laudicina, Alejandro. Lexel SRL; ArgentinaFil: Quatrin, Mariana. Provincia de Buenos Aires. Ministerio de Salud. Hospital de Niños "Sor María Ludovica" de la Plata; ArgentinaFil: Bengió, Raquel María. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Larripa, Irene Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Medicina Experimental. Academia Nacional de Medicina de Buenos Aires. Instituto de Medicina Experimental; Argentin

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄ nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Copper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and thermoelectrics (TE). In such applications, the use of solution-processed nanocrystals (NCs) to produce thin films or bulk nanomaterials has associated several potential advantages, such as high material yield and throughput, and composition control with unmatched spatial resolution and cost. Here we report on the production of Cu₃SbSe₄ (CASe) NCs with tuned amounts of Sn and Bi dopants. After proper ligand removal, as monitored by nuclear magnetic resonance and infrared spectroscopy, these NCs were used to produce dense CASe bulk nanomaterials for solid state TE energy conversion. By adjusting the amount of extrinsic dopants, dimensionless TE figures of merit (ZT) up to 1.26 at 673 K were reached. Such high ZT values are related to an optimized carrier concentration by Sn doping, a minimized lattice thermal conductivity due to efficient phonon scattering at point defects and grain boundaries, and to an increase of the Seebeck coefficient obtained by a modification of the electronic band structure with Bi doping. Nanomaterials were further employed to fabricate ring-shaped TE generators to be coupled to hot pipes, which provided 20 mV and 1 mW per TE element when exposed to a 160 °C temperature gradient. The simple design and good thermal contact associated with the ring geometry and the potential low cost of the material solution processing may allow the fabrication of TE generators with short payback times

English Teacher: subjectivity and English in Bogotá

Frente al tema de la subjetividad este profundo análisis deja ver que la subjetividad del maestro de inglés es mucho más compleja de lo que nos quieren mostrar las políticas y los programas del Estado. Un maestro de inglés es mucho más que el resultado de un examen (foráneo) de proficiencia. Este libro nos permite advertir que la subjetividad del maestro de inglés, que tradicionalmente (no solo en Colombia, sino también en otras latitudes) se ha construido como finita, terminada, vacía, es en realidad fluida, múltiple, con infinidad de estratos. Esto se traduce en que muchos maestros de inglés del país están comprometidos con la lucha por la dignificación de la profesión, por reivindicar sus derechos como hablantes de una lengua como el inglés, de sus particularidades frente a los usos y prácticas de esa lengua, y que se rehúsan a cumplir con la superficialidad que supone la etiqueta del English teacher. Este libro constituye, pues, una lectura obligada para investigadores, formadores de maestros y maestros en formación, dado que todos y cada uno encontrarán, además de la reconstrucción de las discontinuidades hecha por los autores, otras fisuras, otras discontinuidades que valdría la pena explorar.Faced with the issue of subjectivity, this deep analysis shows that the subjectivity of the English teacher is much more complex than what the State's policies and programs want to show us. An English teacher is much more than the result of a (foreign) proficiency exam. This book allows us to notice that the subjectivity of the English teacher, which traditionally (not only in Colombia, but also in other latitudes) has been constructed as finite, finished, empty, is in reality fluid, multiple, with an infinite number of strata. This means that many English teachers in the country are committed to the fight for the dignity of the profession, to claim their rights as speakers of a language like English, their particularities regarding the uses and practices of that language, and who refuse to comply with the superficiality that the English teacher label entails. This book is therefore a must read for researchers, teacher educators and teachers in training, as each and every one will find, In addition to the reconstruction of the discontinuities made by the authors, other fissures, other discontinuities that would be worth exploring.Bogot

Synthesis of Metforminium Succinate by Melting. Crystal Structure, Thermal, Spectroscopic and Dissolution Properties

The reaction by melt mixing at 220 °C of the antihypergly-cemic drug metformin hydrochloride1with dehydrated sodium suc-cinate yields efficiently the organic salt [MET]2[SUC]2(H-MET+=metforminium and SUC2-= succinate). Solid state CPMAS NMR13Cspectroscopy experiments, powder X-ray diffraction and FT-IR re-sults support the formation of the pharmaceutical salt2in goodyields. Besides, thecharged-assisted hydrogen bonding interactionsof type N-H...-O(carboxylate) were thoroughly analyzed by singlecrystal X-Ray diffraction techniques. Thus, the pharmaceutical salt2possesses considerable thermal differences when compared to thepure starting reagents. In addition, intrinsic dissolution rate expe-riments in buffered aqueous solutions at pH= 6.8 showed a sus-tained-release behavior of the drug in2with a constant value ofKint= 0.885 mg/min * cm2

[Effect of ramipril on the glucose/insulin coefficient and the ventricular mass index in patients with light to moderate arterial hypertension]

This longitudinal prospective study was designed to assess the effects of the angiotensin converting enzyme inhibitor (ACEI) ramipril on ventricular mass, left ventricle (LV) diastolic function and blood pressure in patients with mild to moderate essential hypertension and hyperinsulinemia. LV diastolic dysfunction is the first target organ alteration occurring in hypertensive patients, while ventricular hypertrophy is the most relevant predictive factor for cardiovascular morbility and mortality in systemic hypertension. Because several studies have demonstrated that there is no direct correlation between blood pressure values and the severity of LV hypertrophy or diastolic dysfunction, it is assumed that other factors are involved in the genesis of these functional alterations. Moreover, the hypertensive effect of insulin is caused by sympathetic stimulation, sodium and water renal retention and protooncogene stimulation leading to myocardial and vascular fibrosis and hypertrophy. We studied 24 hypertensive patients with hyperinsulinemia. All patients underwent an overall and cardiologic clinical evaluation, and electrocardiographic and ecocardiographic studies were performed at baseline and 6 months after being treated with 2.5 to 5 mg/day ramipril. Ramipril treatment significantly reduced systolic (12 mmHg) and diastolic (12 mmHg) pressure levels, basal insulin serum levels (23.62 pmol/dL vs 10.42 pmol/dL), and left ventricle mass index values (143.8 g/m2 vs 118.2 g/m2). Among the variables assessing LV diastolic function, only the transmitral flow E/A wave ratio showed significant differences in women. Ramipril was well tolerated and no significant adverse events were reported

[Effect of ramipril on the glucose/insulin coefficient and the ventricular mass index in patients with light to moderate arterial hypertension]

This longitudinal prospective study was designed to assess the effects of the angiotensin converting enzyme inhibitor (ACEI) ramipril on ventricular mass, left ventricle (LV) diastolic function and blood pressure in patients with mild to moderate essential hypertension and hyperinsulinemia. LV diastolic dysfunction is the first target organ alteration occurring in hypertensive patients, while ventricular hypertrophy is the most relevant predictive factor for cardiovascular morbility and mortality in systemic hypertension. Because several studies have demonstrated that there is no direct correlation between blood pressure values and the severity of LV hypertrophy or diastolic dysfunction, it is assumed that other factors are involved in the genesis of these functional alterations. Moreover, the hypertensive effect of insulin is caused by sympathetic stimulation, sodium and water renal retention and protooncogene stimulation leading to myocardial and vascular fibrosis and hypertrophy. We studied 24 hypertensive patients with hyperinsulinemia. All patients underwent an overall and cardiologic clinical evaluation, and electrocardiographic and ecocardiographic studies were performed at baseline and 6 months after being treated with 2.5 to 5 mg/day ramipril. Ramipril treatment significantly reduced systolic (12 mmHg) and diastolic (12 mmHg) pressure levels, basal insulin serum levels (23.62 pmol/dL vs 10.42 pmol/dL), and left ventricle mass index values (143.8 g/m2 vs 118.2 g/m2). Among the variables assessing LV diastolic function, only the transmitral flow E/A wave ratio showed significant differences in women. Ramipril was well tolerated and no significant adverse events were reported

Effect of ramipril on the glucose/insulin coefficient and the ventricular mass index in patients with light to moderate arterial hypertension [Efecto del ramipril sobre el cociente glucosa/insulina y el índice de masa ventricular izquierda en pacientes con hipertensión arterial leve a moderada]

This longitudinal prospective study was designed to assess the effects of the angiotensin converting enzyme inhibitor (ACEI) ramipril on ventricular mass, left ventricle (LV) diastolic function and blood pressure in patients with mild to moderate essential hypertension and hyperinsulinemia. LV diastolic dysfunction is the first target organ alteration occurring in hypertensive patients, while ventricular hypertrophy is the most relevant predictive factor for cardiovascular morbility and mortality in systemic hypertension. Because several studies have demonstrated that there is no direct correlation between blood pressure values and the severity of LV hypertrophy or diastolic dysfunction, it is assumed that other factors are involved in the genesis of these functional alteratfons. Moreover, the hypertensive effect of insulin is caused by sympathetic stimulation, sodium and water renal retention and protooncogene stimulation leading to myocardial and vascular fibrosis and hypertrophy. We studied 24 hypertensive patients with hyperinsulinemia. All patients underwent an overall and cardiologic clinical evaluation, and electrocardiographic and ecocardiographic studies were performed at baseline and 6 months after being treated with 2.5 to 5 mg/day ramipril. Ramipril treatment significantly reduced systolic (12 mmHg) and diastolic (12 mmHg) pressure levels, basal insulin serum levels (23.62 pmol/dL vs 10.42 pmol/dL), and left ventricle mass index values (143.8 g/m2 vs 118.2 g/m2). Among the variables assessing LV diastolic function, only the transmitral flow E/ A wave ratio showed significant differences in women. Ramipril was well tolerated and no significant adverse events were reported

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄ nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Copper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and thermoelectrics (TE). In such applications, the use of solution-processed nanocrystals (NCs) to produce thin films or bulk nanomaterials has associated several potential advantages, such as high material yield and throughput, and composition control with unmatched spatial resolution and cost. Here we report on the production of Cu₃SbSe₄ (CASe) NCs with tuned amounts of Sn and Bi dopants. After proper ligand removal, as monitored by nuclear magnetic resonance and infrared spectroscopy, these NCs were used to produce dense CASe bulk nanomaterials for solid state TE energy conversion. By adjusting the amount of extrinsic dopants, dimensionless TE figures of merit (ZT) up to 1.26 at 673 K were reached. Such high ZT values are related to an optimized carrier concentration by Sn doping, a minimized lattice thermal conductivity due to efficient phonon scattering at point defects and grain boundaries, and to an increase of the Seebeck coefficient obtained by a modification of the electronic band structure with Bi doping. Nanomaterials were further employed to fabricate ring-shaped TE generators to be coupled to hot pipes, which provided 20 mV and 1 mW per TE element when exposed to a 160 °C temperature gradient. The simple design and good thermal contact associated with the ring geometry and the potential low cost of the material solution processing may allow the fabrication of TE generators with short payback times