Prospective Analyses of Circulating B Cell Subsets in ABO-Compatible and ABO-Incompatible Kidney Transplant Recipients.

Immunosuppressive strategies applied in renal transplantation traditionally focus on T cell inhibition. B cells were mainly examined in the context of antibody-mediated rejection, whereas the impact of antibody-independent B cell functions has only recently entered the field of transplantation. Similar to T cells, distinct B cell subsets can enhance or inhibit immune responses. In this study, we prospectively analyzed the evolution of B cell subsets in the peripheral blood of AB0-compatible (n = 27) and AB0-incompatible (n = 10) renal transplant recipients. Activated B cells were transiently decreased and plasmablasts were permanently decreased in patients without signs of rejection throughout the first year. In patients with histologically confirmed renal allograft rejection, activated B cells and plasmablasts were significantly elevated on day 365. Rituximab treatment in AB0-incompatible patients resulted in long-lasting B cell depletion and in a naïve phenotype of repopulating B cells 1 year following transplantation. Acute allograft rejection was correlated with an increase of activated B cells and plasmablasts and with a significant reduction of regulatory B cell subsets. Our study demonstrates the remarkable effects of standard immunosuppression on circulating B cell subsets. Furthermore, the B cell compartment was significantly altered in rejecting patients. A specific targeting of deleterious B cell subsets could be of clinical benefit in renal transplantation.

Disección coronaria espontánea en España: un estudio sobre bases administrativas realizado a partir del Conjunto Mínimo Básico de Datos español / Spontaneous coronary artery dissection in Spain: a study using the minimum data set of the Spanish National Health System

Introducción y objetivos La disección coronaria espontánea (DCE) es una causa poco común de infarto agudo de miocardio (IAM). En este estudio se comparan la mortalidad y los reingresos hospitalarios de los pacientes con IAM-DCE e IAM de otras etiologías (IAM-NDCE). Métodos Se calcularon las razones de mortalidad hospitalaria y de reingresos a los 30 días estandarizadas por riesgo (RAMER y RARER respectivamente) utilizando el Conjunto Mínimo Básico de Datos del Sistema Nacional de Salud español (2016-2019). Resultados Se hallaron 806 eventos de IAM-DCE y 119.425 de IMA-NDCE. Los IAM-DCE se produjeron en pacientes más jóvenes y más frecuentemente mujeres que los IAM-NDCE. La mortalidad bruta fue menor (el 3 frente al 7,6%; p<0,001) y la RAMER, mayor (el 7,6±1,7 frente al 7,4±1,7%; p=0,019) en los IAM-DCE. Tras emparejamiento por puntuación de propensión (806 parejas), la mortalidad fue similar en ambos grupos (AdjOR=1,15; IC95%, 0,61-2,2; p=0,653). La tasa bruta de reingresos de los pacientes con IAM-DCE a 30 días fue similar (el 4,6 frente al 5%; p=0,67), mientras que la RARER fue menor (el 4,7±1 frente al 4,8±1%; p=0,015). Tras el emparejamiento por puntuación de propensión (715 parejas), la tasa de ingresos fue similar en ambos grupos (AdjOR=1,14; IC95%, 0,67-1,98; p=0,603). Conclusiones La mortalidad hospitalaria y los reingresos a los 30 días de los pacientes con IAM-DCE es similar a la de los IAM-NDCE cuando el riesgo se ajusta a las características basales de la población. Estos datos resaltan la necesidad de optimizar el manejo, tratamiento y seguimiento clínico de los pacientes con DCE (AU)

Introduction and objectives Spontaneous coronary artery dissection (SCAD) is a rare cause of acute myocardial infarction (AMI). We sought to compare the results on in-hospital mortality and 30-day readmission rates among patients with AMI-SCAD vs AMI due to other causes (AMI-non-SCAD). Methods Risk-standardized in-hospital mortality (rIMR) and risk-standardized 30-day readmission ratios (rRAR) were calculated using the minimum dataset of the Spanish National Health System (2016-2019). Results A total of 806 episodes of AMI-SCAD were compared with 119 425 episodes of AMI–non-SCAD. Patients with AMI-SCAD were younger and more frequently female than those with AMI–non-SCAD. Crude in-hospital mortality was lower (3% vs 7.6%; P<.001) and rIMR higher (7.6±1.7% vs 7.4±1.7%; P=.019) in AMI-SCAD. However, after propensity score adjustment (806 pairs), the mortality rate was similar in the 2 groups (AdjOR, 1.15; 95%CI, 0.61-2,2; P=.653). Crude 30-day readmission rates were also similar in the 2 groups (4.6% vs 5%, P=.67) whereas rRAR were lower (4.7±1% vs 4.8%±1%; P=.015) in patients with AMI-SCAD. Again, after propensity score adjustment (715 pairs) readmission rates were similar in the 2 groups (AdjOR, 1.14; 95%CI, 0.67–1.98; P=.603). Conclusions In-hospital mortality and readmission rates are similar in patients with AMI-SCAD and AMI–non-SCAD when adjusted for the differences in baseline characteristics. These findings underscore the need to optimize the management, treatment, and clinical follow-up of patients with SCAD (AU)

Identificación y cuantificación del efecto fin de semana y festivos en la atención del síndrome coronario agudo en el Sistema Nacional de Salud / The effect of weekends and public holidays on the care of acute coronary syndrome in the Spanish National Health System

Introducción y objetivos Analizar si el ingreso en fin de semana o festivo (IFSF), frente al ingreso en días laborables, influye en el tratamiento (angioplastia, intervención coronaria percutánea [ICP]) y los resultados (mortalidad hospitalaria) de los pacientes hospitalizados por síndrome coronario agudo en el Sistema Nacional de Salud. Métodos Estudio observacional retrospectivo de pacientes ingresados por infarto agudo de miocardio con elevación del segmento ST (IAMCEST) o con síndrome coronario agudo sin elevación del segmento ST (SCASEST) en los hospitales del Sistema Nacional de Salud durante el periodo 2003-2018. Resultados Se seleccionaron 438.987 episodios de IAMCEST y 486.565 de SCASEST, de los cuales fueron IFSF el 28,8 y el 26,1% respectivamente. El IFSF se mostraba como un factor de riesgo de mortalidad hospitalaria en los modelos ajustados por riesgo del IAMCEST (OR=1,05; IC95%, 1,03-1,08; p<0,001) y del SCASEST (OR=1,08; IC95%, 1,05-1,12; p <0,001). La tasa de ICP en el IAMCEST fue más de 2 puntos porcentuales mayor en los pacientes ingresados en días laborables durante el periodo 2003-2011 y similar o incluso más baja en 2012-2018, sin cambios significativos para el SCASEST. El IFSF se mostró como factor de riesgo estadísticamente significativo tanto para el IAMCEST como para el SCASEST. Conclusiones El IFSF puede aumentar el riesgo de muerte hospitalaria en un 5% (IAMCEST) y un 8% (SCASEST). La persistencia del riesgo de mayor mortalidad hospitalaria tras ajustar por la realización de ICP y las demás variables explicativas probablemente indique dficiencias en el tratamiento durante el fin de semana respecto de los días laborables (AU)

Introduction and objectives To analyze whether admission on weekends or public holidays (WHA) influences the management (performance of angioplasty, percutaneous coronary intervention [PCI]) and outcomes (in-hospital mortality) of patients hospitalized for acute coronary syndrome in the Spanish National Health System compared with admission on weekdays. Methods Retrospective observational study of patients admitted for ST-segment elevation myocardial infarction (STEMI) or for non–ST-segment elevation acute coronary syndrome (NSTEACS) in hospitals of the Spanish National Health system from 2003 to 2018. Results A total of 438 987 episodes of STEMI and 486 565 of NSTEACS were selected, of which 28.8% and 26.1% were WHA, respectively. Risk-adjusted models showed that WHA was a risk factor for in-hospital mortality in STEMI (OR, 1.05; 95%CI,1.03-1.08; P < .001) and in NSTEACS (OR, 1.08; 95%CI, 1.05-1.12; P < .001). The rate of PCI performance in STEMI was more than 2 percentage points higher in patients admitted on weekdays from 2003 to 2011 and was similar or even lower from 2012 to 2018, with no significant changes in NSTEACS. WHA was a statistically significant risk factor for both STEMI and NSTEACS. Conclusions WHA can increase the risk of in-hospital death by 5% (STEMI) and 8% (NSTEACS). The persistence of the risk of higher in-hospital mortality, after adjustment for the performance of PCI and other explanatory variables, probably indicates deficiencies in management during the weekend compared with weekdays (AU)

[The effect of two lubricants (magnesium stearate and pruv) in the formation of tablets of four anti-ulcer agents/ by means of direct compression]. / Influence de deux lubrifiants (stéarate de magnésium et pruv) dans l'élaboration de comprimés de quatre anti-ulcéreux au moyen de la compression directe.

In this research we study the influence of two lubricants-Magnesium Stearate and Pruv--on the tablets elaboration of Cimetidine, Ranitidine, Famotidine and Pirenzepine by direct compression. The presence of 0.5% of lubricants improved the flow of all the formulations, but especially the Famotidine's formulation. The formulations with Magnesium Stearate had the worst results in tests of friability and tensile strength. All tablets with drugs and Pruv had high data in indentation hardness. The tablets of Cimetidine, Famotidine and Pirenzepine with Magnesium Stearate had less time of disintegration.

[Geographic isolation in the geriatric population of a rural town]. / Aislamiento geográfico en la población geriátrica de un municipio rural.

OBJECTIVE: To estimate the prevalence and characteristics of geographic isolation in the elder people from Alora (Málaga). DESIGN: A transversal observational study. SETTING: Town of Alora. PATIENTS OR OTHER PARTICIPANTS: Elder people of both sexes, who lives habitually in Alora and born in 1927 or before. Home interview in a 153 individuals random sample proceeding from actual census during june to september 1992. MEASUREMENTS AND MAIN RESULTS: We found 25 individuals with the isolation conditions being the 16.34% (IC 95%: 10.48-22.20). In the 24% of them (IC 95%: 11.5-43.4) we found dependence of other person for two and more basic functions in the current life. Half of them this deficits are cover by the couple, the rest depends on their sons. We didn't found significative differences in none variables with the urban group. CONCLUSIONS: The geographic isolation affect to an important proportion of elder people in rural areas and must be used in the designs of care elderly programs.