¿Qué papel juega la actividad de la enfermedad en el riesgo cardiovascular de la artritis reumatoide? / What role does rheumatoid arthritis disease activity have in cardiovascular risk?

La artritis reumatoide (AR) presenta una mortalidad de 1,3 a 3 veces superior a la población general; la principal causa de muerte son las complicaciones cardiovasculares (40-50%). En el abordaje inicial se debe incluir la valoración del riesgo cardiovascular (RCV) mediante algoritmos adaptados para esta población. Si bien el SCOREm constituye un avance importante, hay datos que indican que podría infradiagnosticar la ateroesclerosis subclínica. Objetivo: Estimar la fuerza de asociación entre la ecografia carotídea y el SCOREm en esta población, así como la implicancia de la actividad de la enfermedad. Metodología: Estudio observacional, transversal y analítico, realizado en el Hospital General de Ciudad Real durante el periodo junio de 2013-mayo de 2014. Se realizó la valoración del RCV y según el SCOREm se dividió a la población en riesgo bajo y alto (medio, alto y muy alto). Se estudió la presencia de ateroesclerosis subclínica en los pacientes de riesgo bajo. Resultados: Del total de 119 pacientes con AR, el 73,1% presentaba factores de riesgo tradicionales. Se excluyeron 38 pacientes por evento cardiovascular previo, diabetes mellitus y nefropatía. Se objetivó placa ateromatosa en el 14,63% de la población de riesgo bajo. El factor con mayor asociación con la presencia de aterosclerosis subclínica fue el grado de actividad moderada/alta de la AR medida mediante el SDAI, con un OR de 4,95 (IC 95%: 1,53-16,01). Conclusiones: Aunque existe una aceptable asociación entre la presencia de aterosclerosis subclínica y el SCOREm, hay una proporción no despreciable de pacientes clasificados de riesgo bajo con placas ateromatosas. La actividad de la enfermedad fue el factor de riesgo más asociado al incremento del RCV

Rheumatoid arthritis (RA) is associated with a 1.3 to 3-fold increase in mortality, being the major cause of death from cardiovascular complications (40%-50%). Therefore, the initial approach should include cardiovascular risk (CVR) assessment using algorithms adapted for this population. Although, SCOREM is an important advance, there are data indicating that subclinical atherosclerosis may be underdiagnosed. Objective: To estimate the strength of association between carotid ultrasound and SCOREM in this population, as well as the implication of disease activity. Methodology: Cross-sectional, observational, analytical study performed at the General Hospital of Ciudad Real, Spain, between June 2013 and May 2014. The evaluation of CVR was performed and, according to SCOREM, the population was divided into low and high (medium, high and very high) risk. We studied the presence of subclinical atherosclerosis in low-risk patients. Results: Of the total of 119 RA patients, 73.1% had traditional risk factors. Thirty-eight patients were excluded because of a previous cardiovascular event, diabetes mellitus and/or nephropathy. Atheromatous plaque was observed in 14.63% of the low-risk population. The factor with the strongest association to the presence of subclinical atherosclerosis was a moderate or high activity of RA measured by the simplified disease activity index with an odds ratio of 4.95 (95% CI: 1.53-16.01). Conclusions: Although there was an acceptable correlation between the presence of subclinical atherosclerosis and SCOREM, there was a considerable proportion of atheromatous plaques in low-risk patients. Disease activity was the risk factor most closely associated with increased CVR

Artritis reumatoide, una enfermedad sistémica con un riesgo cardiovascular subestimado / Rheumatoid arthritis; a systemic disease with an under-estimated cardiovascular risk

RESUMEN Objetivo: Determinar el riesgo cardiovascular y la prevalencia de factores de riesgo cardiovascular (RCV) en los pacientes con artritis reumatoide. Materiales y métodos: Estudio observacional, descriptivo y transversal, realizado en el Hospital General de Ciudad Real, entre junio de 2013 y mayo de 2014. Se realizó una analítica completa, se elaboró un perfil clínico, se calculó el SCOREm y se estratificó el RCV. Finalmente, se determinó la presencia de aterosclerosis subclínica mediante la realización de una ecografía carotídea. Resultados: 119 pacientes aceptaron participar en el estudio. Hubo una prevalencia del 73,1% de los factores de riesgo tradicionales, 6,72% había presentado un evento cardiovascular al momento del estudio, 22,68% poseía un infradiagnóstico de diabetes mellitus o nefropatía. La distribución final del RCV fue: riesgo bajo 46 (38,7%), riesgo intermedio 33 (27,7%), riesgo alto 2 (1,7%), riesgo muy alto 38 (31,9%). Conclusiones: Existe una alta prevalencia de factores de RCV y riesgo elevado infradiagnosticado en esta población. Por lo que si bien la artritis reumatoide se manifiesta de forma más aparente a nivel articular, ha de considerarse una enfermedad sistémica asociada a una mayor incidencia de eventos cardiovasculares.

ABSTRACT Objective: To determine the cardiovascular risk and the prevalence of cardiovascular risk (CVR) factors in patients with rheumatoid arthritis. Material and methods: Observational, descriptive and cross-sectional study performed in the General Hospital of Ciudad Real from June 2013 to May 2014. A complete laboratory analysis was performed, a clinical profile was prepared, the Systematic Coronary Risk Evaluation (SCOREm) was calculated, and the CVR was stratified. Finally, the presence of sub-clinical atherosclerosis was determined by performing a carotid ultrasound. Results: 119 patients accepted to participate in the study. There was a prevalence of 73.1% of traditional risk factors; 6.72% having had a cardiovascular event at the time of the study, and 22.68% had an underdiagnosis of diabetes mellitus and/or nephropathy. The final distribution of the CVR was: Low risk 46 (38.7%), intermediate risk 33 (27.7%), high risk 2 (1.7%), very high risk 38 (31.9%). Conclusions: There is a high prevalence of CVR factors and an elevated risk of underdiagnosis in the rheumatoid arthritis population. Therefore, although rheumatoid arthritis manifests itself more in the joints, it should be considered a systemic disease associated with a higher incidence of cardiovascular events.

What role does rheumatoid arthritis disease activity have in cardiovascular risk? / ¿Qué papel juega la actividad de la enfermedad en el riesgo cardiovascular de la artritis reumatoide?

Rheumatoid arthritis (RA) is associated with a 1.3 to 3-fold increase in mortality, being the major cause of death from cardiovascular complications (40%-50%). Therefore, the initial approach should include cardiovascular risk (CVR) assessment using algorithms adapted for this population. Although, SCOREM is an important advance, there are data indicating that subclinical atherosclerosis may be underdiagnosed. OBJECTIVE: To estimate the strength of association between carotid ultrasound and SCOREM in this population, as well as the implication of disease activity. METHODOLOGY: Cross-sectional, observational, analytical study performed at the General Hospital of Ciudad Real, Spain, between June 2013 and May 2014. The evaluation of CVR was performed and, according to SCOREM, the population was divided into low and high (medium, high and very high) risk. We studied the presence of subclinical atherosclerosis in low-risk patients. RESULTS: Of the total of 119 RA patients, 73.1% had traditional risk factors. Thirty-eight patients were excluded because of a previous cardiovascular event, diabetes mellitus and/or nephropathy. Atheromatous plaque was observed in 14.63% of the low-risk population. The factor with the strongest association to the presence of subclinical atherosclerosis was a moderate or high activity of RA measured by the simplified disease activity index with an odds ratio of 4.95 (95% CI: 1.53-16.01). CONCLUSIONS: Although there was an acceptable correlation between the presence of subclinical atherosclerosis and SCOREM, there was a considerable proportion of atheromatous plaques in low-risk patients. Disease activity was the risk factor most closely associated with increased CVR.

Evaluation of transport conditions for autologous bone marrow-derived mesenchymal stromal cells for therapeutic application in horses.

Background. Mesenchymal stromal cells (MSCs) are increasingly used for clinical applications in equine patients. For MSC isolation and expansion, a laboratory step is mandatory, after which the cells are sent back to the attending veterinarian. Preserving the biological properties of MSCs during this transport is paramount. The goal of the study was to compare transport-related parameters (transport container, media, temperature, time, cell concentration) that potentially influence characteristics of culture expanded equine MSCs. Methods. The study was arranged in three parts comparing (I) five different transport containers (cryotube, two types of plastic syringes, glass syringe, CellSeal), (II) seven different transport media, four temperatures (4 °C vs. room temperature; -20 °C vs. -80 °C), four time frames (24 h vs. 48 h; 48 h vs. 72 h), and (III) three MSC concentrations (5 × 10(6), 10 × 10(6), 20 × 10(6) MSC/ml). Cell viability (Trypan Blue exclusion; percent and total number viable cell), proliferation and trilineage differentiation capacity were assessed for each test condition. Further, the recovered volume of the suspension was determined in part I. Each condition was evaluated using samples of six horses (n = 6) and differentiation protocols were performed in duplicates. Results. In part I of the study, no significant differences in any of the parameters were found when comparing transport containers at room temperature. The glass syringe was selected for all subsequent evaluations (highest recoverable volume of cell suspension and cell viability). In part II, media, temperatures, or time frames had also no significant influence on cell viability, likely due to the large number of comparisons and small sample size. Highest cell viability was observed using autologous bone marrow supernatant as transport medium, and "transport" at 4 °C for 24 h (70.6% vs. control group 75.3%); this was not significant. Contrary, viability was unacceptably low (<40%) for all freezing protocols at -20 °C or -80 °C, particularly with bone marrow supernatant or plasma and DMSO. In part III, various cell concentrations also had no significant influence on any of the evaluated parameters. Chondrogenic differentiation showed a trend towards being decreased for all transport conditions, compared to control cells. Discussion. In this study, transport conditions were not found to impact viability, proliferation or ability for trilineage differentiation of MSCs, most likely due to the small sample size and large number of comparisons. The unusual low viability after all freezing protocols is in contrast to previous equine studies. Potential causes are differences in the freezing, but also in thawing method. Also, the selected container (glass syringe) may have impacted viability. Future research may be warranted into the possibly negative effect of transport on chondrogenic differentiation.