Anti-severe acute respiratory syndrome coronavirus-2 adenoviral-vector vaccines trigger subclinical antiplatelet autoimmunity and increase of soluble platelet activation markers.

To slow down the coronavirus disease 2019 (COVID-19) pandemic an unequalled vaccination campaign was initiated. Despite proven efficacy and safety, a rare but potentially fatal complication of adenoviral-vector vaccines, called vaccine-induced immune thrombotic thrombocytopenia (VITT), has emerged the pathogenesis of which seems to be related to the development of platelet-activating anti-platelet factor 4 (PF4) antibodies. While a few studies have evaluated the incidence of anti-PF4 positivity in anti-severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) vaccine recipients, to date no studies have assessed whether an antiplatelet immunological response develops and if this associates with platelet and blood clotting activation. We carried out a prospective study in healthy subjects who received the first dose of ChAdOx1 or Ad26.COV2.S or BNT162b2 vaccines to evaluate platelet-specific and non-specific immune response and in vivo platelet activation and blood clotting activation. Individuals receiving ChAdOx1 and, less so, Ad26.COV2.S developed with high frequency auto- or alloantiplatelet antibodies, increased circulating platelet-derived microvesicles and soluble P-selectin associated with mild blood clotting activation. Our study shows that an immunological reaction involving platelets is not uncommon in individuals receiving anti-SARS-CoV-2 vaccination, especially after ChAdOx1 and Ad26.COV2.S, and that it associates with in vivo platelet and blood clotting activation.

Lower serum levels of IL-13 is associated with increased carotid intima-media thickness in old age subjects.

BACKGROUND: Cardiovascular diseases due to atherosclerosis represent the major cause of disability and mortality in old age subjects. The atherosclerotic process is linked to a low grade of systemic inflammation with the involvement of many cytokines and inflammatory proteins. Among them, evidence from animal studies suggests that IL-13 has a protective property. However, the role of IL-13 in the pathogenesis of atherosclerosis in humans is still unknown. AIMS: With this study, we aim to investigate a potential association between IL-13 and carotid intima-media thickness (IMT) in old age subjects. METHODS: This is a retrospective study conducted among 79 old age subjects (over 75 years old). All subjects underwent IMT assessment by high-resolution B-mode ultrasonography and IL-13 measurement in serum by ELISA. RESULTS: Subjects (41 M/38F) had a mean age of 81.0 ± 4.5 years and were mostly overweight. Stratifying the whole cohort by IMT thickness (IMT ≤ 0.9, n = 17; IMT ≥ 1 and ≤ 1.3, n = 50; IMT ≥ 1.4, n = 12) among the main variables explored, only BMI and triglycerides differed among groups, having subjects with higher IMT significantly higher BMI and lower triglycerides. Serum IL-13 levels significantly differed among groups having subjects with IMT ≥ 1.4 lower levels as compared to other groups (p < 0.0001). In all sample population, IMT values significantly correlate with IL-13 levels (r = - 0.454, p < 0.0001). Indeed, a linear regression analysis showed that independent of age, gender, body mass index, triglycerides, systolic blood pressure, statin use and smoking habit, lower IL-13 serum levels were associated with higher IMT values. CONCLUSIONS: IL-13, an anti-inflammatory cytokine, may have a protective role in the human atherosclerotic process. It could be used as an effective and promising novel therapeutic target development.

Levels of Empathy Orientation after the Implementation of a New Curriculum

Objective: To compare the level of empathy orientation of the students in the Dentistry Program from the Universidad Metropolitana according to gender and levels of education after the implementation of a new curriculum. Material and Methods: An exploratory and transversal research was made. The studied population are the students from the first and the fifth academic year in the Dentistry Undergraduate Program from the Universidad Metropolitana (Barranquilla, Colombia) (n = 371, N = 482; 76.97% of the population) First: 92; Second: 83; Third: 60; Fourth: 71 and Fifth: 65, being females = 235 and males = 136. Data collection was done in March 2016 for the present study and in 2012. The Jefferson Scale of Physician Empathy was applied to participants. Results: For the "Academic Years" factor, the means in the first undergraduate years are similar with an increase in the last two undergraduate years; females have superior values than males. However, the behavior of these means is different when analyzing the combined levels of both factors. The female gender increases steadily in the first four years and decreases in the fifth year; The male gender goes down from first to second place and increases steadily until the fifth year surpassing the female in this last year. Conclusion: The general results obtained on empathy have improved compared to those results from 2012. The questions that obtained significant scores were those related to the cognitive component. This could be explained by the incorporation of a greater number of community activities into vulnerable population.

Diverticulo o dehiscencia de la cicatriz de la cesarea: reporte de seis casos / Diverticuli or dehiscence of cesarean scar

El diagnóstico de deshiscencia o divertículo de la cicatriz de la cesárea es infrecuente. Estas pacientes pueden consultar por sangrado intermenstrual o dolor pélvico y pueden presentar complicaciones en embarazos posteriores (Ruptura uterina, embarazo ectópico y acretismo placentario). Los hallazgos en la ecografía, en la histerosonografía (HSG) o en la histerosalpingografía muestran comunicación entre la cavidad endometrial y la colección de la pared uterina

Esclerosis múltiple: aproximación epidemiológico-genética en habitantes de Antioquia-Colombia. I: Características clinico-epidemiológicas / Multiple sclerosis: an epidemiologic and genetic approach in Antioquia, Colombia

A partir de una cohorte de individuos del departamento de Antioquia, diagnosticados con enfermedad desmielinizante en Colombia, una región tropical con un fuerte componente genético caucásico, se realizó un análisis clínico-epidemiológico y genético con la finalidad de diagnosticar casos de esclerosis multiple (EM) definida, poder determinar las características clínicas y demográficas del conjunto, caracterizarlos étnicamente y evaluar la existencia de posibles desequilibrios de ligamiento a marcadores genéticos sospechosos de estar asociados al desarrollo de EM como el HLA. Este artículo constituye el primer informe clínico, demográfico de los casos diagnosticados con EM definida. 28 individuos se definieron gnosológicamente, 21 de ellos tenían EM definida, cinco con deficiencia de vitamina B12 y dos lupus eritematoso sistémico. El síntoma más frecuente de inicio fue la neuritis óptica. Otras formas de comienzo fueron las alteraciones motoras y sensitivas. Se encontraron diferencias estadísticas significativas en distribución de frecuencia de los síntomas iniciales con otras series descritas en el mundo, lo que podría significar un comportamiento diferente de la esclerosis múltiple

Evaluación de la articulación patelofemoral con RX simple y TAC

Se revisan los diferentes métodos radiológicos y escanográficos para la evaluación de la articulación patelofemoral, comparándose la sensibilidad de las diferentes medidas así como la correlación entre ellas y con el cuadro clínico de los pacientes. Estos datos están basados en un estudio comparativo donde se realizaron estudios radiológicos simples y escanográficos a un grupo de pacientes con sintomatología referente a esta articulación

Higroma quístico fetal: presentación de un caso y revisión de la literatura

Se presenta un caso de higroma quístico cervical asociado a hidrops fetal, diagnosticado mediante ecografía prenatal, Se hace breve revisión de la literatura, haciendo énfasis en las recomendaciones para el diagnóstico y manejo de esta entidad

Hipertensión pulmonar primaria en pacientes con hipertensión portal

Se revisaron las radiografías de tórax de 18 pacientes con hipertensión portal. En 28 por ciento de éstos se encontraron signos radiológicos de hipertensión pulmonar de tipo precapilar. La relación existente entre hipertensión pulmonar primaria e hipertensión portal ha sido establecida en diversos trabajos científicos. En las series publicadas la incidencia de hipertensión pulmonar primaria es menor de la encontrada en estos pacientes. Se revisa la fisiopatología de esta asociación y se postula de manera hipotética el posible papel de la hipoxemia de los residentes a la altura de la ciudad de Bogotá (2.640 mts), como factor coadyuvante en éste fenómeno