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1.
Eur J Case Rep Intern Med ; 9(2): 003076, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35265540

RESUMEN

Rosai-Dorfman-Destombes disease (RDD) or sinus histiocytosis with massive lymphadenopathy is a rare non-Langerhans cell histiocytosis of unknown cause. The disease often manifests as painless bilateral cervical lymphadenopathy associated with systemic symptoms such as fever and weight loss. Extranodal disease is also frequent and can involve any organ, mostly the skin, nasal cavity, bone, and retro-orbital tissue. Swelling of cartilaginous tissues, such as the helix of the ear or laryngeal structures, may mimic the entity known as relapsing polychondritis. Although spontaneous remission is the most expected evolution, some cases require systemic treatment with prednisone, methotrexate or cytotoxic agents, with variable rates of success. In this respect, since somatic variants in the genes involved in the mitogen-activated protein kinase (MAPK) and extracellular signal-regulated kinases (ERK) pathway have been observed to play a pathogenic role in RDD. Therefore, the use of therapies targeting these pathogenic variants appears to be a reasonable strategy. Here we present the case of a 37-year-old woman with RDD and extensive extranodal involvement that showed a rapid and complete response to the MEK inhibitor cobimetinib. LEARNING POINTS: Rosai-Dorfman-Destombes disease (RDD) may mimic the entity known as relapsing polychondritis but should be treated with drug therapy for the underlying disease.Mutations in MAPK/ERK pathway components should be determined in RDD with systemic involvement, although testing to determine every somatic mutation responsible for the disease is not available in all healthcare centres.MEK inhibitors like cobimetinib could be effective in RDD cases with severe and refractory systemic disease, even if molecular analysis has not been possible.

2.
Sci Rep ; 10(1): 7179, 2020 04 28.
Artículo en Inglés | MEDLINE | ID: mdl-32346051

RESUMEN

Right-sided infective endocarditis (RSIE), classically associated with intravenous drug use or intracardiac devices, is considered a good-prognosis infective endocarditis (IE) form. However, predisposing factors and prognosis for "NODID" RSIE (NOt associated with cardiac Devices or Intravenous Drug use) remain unclear. The aim of this study was to evaluate predisposing factors and prognosis of NODID RSIE compared to other RSIE forms. A retrospective cohort study (January 2008-January 2019) was conducted in a reference center on 300 patients diagnosed with IE. Endocarditis-related events were defined as related to IE in mortality or open-heart surgery during follow-up. A review and meta-analysis of associated literature (January 2008-January 2019) were also performed. Fifty-seven patients presented RSIE (19%), 22 of which were NODID RSIE (39%). Use of intravascular catheters (23% vs 3%; p = 0.027) and congenital heart diseases (18% vs 0%; p = 0.019) were associated with NODID RSIE. This group had a higher in-hospital mortality (23% vs 3%; p = 0.027) and endocarditis-related event rates (41% vs 6%; p = 0.001) than non-NODID RSIE. Furthermore, NODID RSIE was independently associated with in-hospital endocarditis-related events (OR = 19.29; 95%CI:2.23-167.16; p = 0.007). Our meta-analysis evaluated four studies and identified 96 cases (30%) of NODID RSIE from 320 total RSIE cases. NODID RSIE patients demonstrated higher in-hospital mortality (RR = 2.81; 95%CI:1.61-4.90; p < 0.001; I2 = 0.0%) and necessity of open-heart surgery (RR = 13.89; 95%CI:4.14-46.60; p < 0.001; I2 = 0.0%) than non-NODID RSIE cases. Our study suggests that NODID RSIE has the highest endocarditis-related event rate and in-hospital mortality among RSIE cases and therefore should not be considered a good-prognosis IE.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos , Endocarditis Bacteriana/mortalidad , Endocarditis Bacteriana/cirugía , Mortalidad Hospitalaria , Adulto , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Abuso de Sustancias por Vía Intravenosa/mortalidad , Abuso de Sustancias por Vía Intravenosa/cirugía , Tasa de Supervivencia
3.
Eur J Echocardiogr ; 10(2): 374-5, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19129269

RESUMEN

Aorto-cavitary fistula is an infrequent complication in infective endocarditis as well as multiple fistula, being the most rare among intracardiac fistulas. The prognosis of infective endocarditis worsens if there are fistulas associated, exceeding the mortality over 40% despite aggressive surgical treatment. Although transoesophageal echocardiography offers a better sensitivity and specificity, sometimes transthoracic echocardiography is enough to obtain these infrequent pictures that we present.


Asunto(s)
Endocarditis/complicaciones , Atrios Cardíacos/patología , Prótesis Valvulares Cardíacas/efectos adversos , Ventrículos Cardíacos/patología , Abuso de Sustancias por Vía Intravenosa/complicaciones , Fístula Vascular/etiología , Adulto , Insuficiencia de la Válvula Aórtica , Ecocardiografía , Ecocardiografía Transesofágica , Femenino , Humanos , Pronóstico , Sensibilidad y Especificidad , Fístula Vascular/diagnóstico por imagen
4.
Eur J Echocardiogr ; 9(2): 316-7, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-18490325

RESUMEN

Complete ventricular septal defects (VSD) can be congenital (estimated prevalence 0.5% in live births) (Roguin N, et al. High prevalence of muscular ventricular septal defect in neonates. J Am Coll Cardiol 1995;26:1545-1548) or may be a complication of acute myocardial infarction (estimated incidence in the era of thrombolysis 0.2%) [Crenshaw BS, et al. Risk factors, angiographic patterns, and outcomes in patients with ventricular septal defect complicating acute myocardial infarction. GUSTO-I (Global Utilization of Streptokinase and TPA for Occluded Coronary Arteries) Trial Investigators. Circulation 2000;101:27-32]. In this paper, we report two unique cases of partial VSD.


Asunto(s)
Ecocardiografía/métodos , Defectos del Tabique Interventricular/diagnóstico por imagen , Defectos del Tabique Interventricular/etiología , Anciano , Estenosis de la Válvula Aórtica/complicaciones , Defectos del Tabique Interventricular/fisiopatología , Humanos , Masculino , Infarto del Miocardio/complicaciones
5.
Rev. esp. drogodepend ; 48(2): 60-71, 2023.
Artículo en Español | IBECS (España) | ID: ibc-222702

RESUMEN

Introducción: Las series de televisión pueden actuar como una de las principales fuentes de información sobre las adicciones. Sin embargo, la investigación sobre la representación fiel de la adicción en cuanto a su realidad clínica y social es todavía escasa, principalmente porque requiere un enfoque interdisciplinar de mayor complejidad. Metodología: este artículo tiene como objetivo analizar la representación narrativa de la adicción a las drogas a través de dos estudios de caso de las series de televisión: Euphoria (Levinson et al., 2017-2021) y Skins (Elsley et al., 2013-2017). Además, pretende identificar qué estereotipos siguen predominando en la pantalla. Resultados: Los resultados muestran que las series de televisión actuales intentan optar por mejores representaciones. Discusión y conclusiones: a pesar de la complejidad de los imaginarios sobre las drogas en estas series, todavía se produce una perpetuación de ideas y representaciones erróneas debido a una tensión entre mostrar valores realistas y educativos (edutainment) o bien optar por un drama audiovisual y narrativo apasionante. Finalmente, cabe señalar que la serie de televisión critica cómo la responsabilidad de la recuperación recae en la persona y no en el sistema. (AU)


Introduction: Television series can act as one of the primary sources of information on addiction. However, research on the accurate representation of addiction concerning its clinical and social reality is still lacking, mainly because it requires an interdisciplinary approach with higher complexity. Methods_ this article aims to analyze the narrative depiction of drug addiction through two TV series case studies_ Euphoria (Levinson et al., 2017-2021) and Skins (Elsley et al., 2013-2017). Moreover, it intends to identify which stereotypes are still predominant on-screen. Results_ current TV series try to opt for better representations. Discussion_ the perpetuation of misconceptions and misrepresentations is still due to a tension between showing realistic, educational values (edutainment) and opting for a gripping audio-visual and narrative drama. Finally, the TV series criticizes how the responsibility for the recovery is placed on the persona rather than the system. (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Recursos Audiovisuales , Trastornos Relacionados con Sustancias , Percepción Social , Drogas Ilícitas , Consumidores de Drogas
6.
Rev. esp. drogodepend ; 48(2): 72-82, 2023.
Artículo en Inglés | IBECS (España) | ID: ibc-222703

RESUMEN

Introduction: Television series can act as one of the primary sources of information on addiction. However, research on the accurate representation of addiction concerning its clinical and social reality is still lacking, mainly because it requires an interdisciplinary approach with higher complexity. Methods_ this article aims to analyze the narrative depiction of drug addiction through two TV series case studies_ Euphoria (Levinson et al., 2017-2021) and Skins (Elsley et al., 2013-2017). Moreover, it intends to identify which stereotypes are still predominant on-screen. Results_ current TV series try to opt for better representations. Discussion_ the perpetuation of misconceptions and misrepresentations is still due to a tension between showing realistic, educational values (edutainment) and opting for a gripping audio-visual and narrative drama. Finally, the TV series criticizes how the responsibility for the recovery is placed on the persona rather than the system. (AU)


Introducción: Las series de televisión pueden actuar como una de las principales fuentes de información sobre las adicciones. Sin embargo, la investigación sobre la representación fiel de la adicción en cuanto a su realidad clínica y social es todavía escasa, principalmente porque requiere un enfoque interdisciplinar de mayor complejidad. Metodología: este artículo tiene como objetivo analizar la representación narrativa de la adicción a las drogas a través de dos estudios de caso de las series de televisión: Euphoria (Levinson et al., 2017-2021) y Skins (Elsley et al., 2013-2017). Además, pretende identificar qué estereotipos siguen predominando en la pantalla. Resultados: Los resultados muestran que las series de televisión actuales intentan optar por mejores representaciones. Discusión y conclusiones: a pesar de la complejidad de los imaginarios sobre las drogas en estas series, todavía se produce una perpetuación de ideas y representaciones erróneas debido a una tensión entre mostrar valores realistas y educativos (edutainment) o bien optar por un drama audiovisual y narrativo apasionante. Finalmente, cabe señalar que la serie de televisión critica cómo la responsabilidad de la recuperación recae en la persona y no en el sistema. (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Recursos Audiovisuales , Trastornos Relacionados con Sustancias , Percepción Social , Drogas Ilícitas , Consumidores de Drogas
8.
Rev Esp Cardiol ; 59(2): 109-16, 2006 Feb.
Artículo en Español | MEDLINE | ID: mdl-16540031

RESUMEN

INTRODUCTION AND OBJECTIVES: End-stage heart failure is associated with very high morbidity and mortality. Palliative care has been little studied in affected patients. PATIENTS AND METHOD: Between January 1998 and December 2004, 61 patients with end-stage heart failure participated in a specialized advanced heart failure care program. The program included patient education on advanced heart failure, with day-care and home-care elements, and involved intravenous drug administration when necessary. RESULTS: The mean age of the study population was 64 (13) years (range 32-87 years), with 92% being male. Their mean ejection fraction was 23 (6%), mean systolic blood pressure 100 (16) mm Hg, mean blood sodium level 137 (4) mEq, mean creatinine level 1.7 (0.8) mg/dL, and mean hemoglobin level 12 (2) mg/dL. The number of hospitalizations, number of days in hospital per admission, and number of emergency room visits in the year before inclusion in the specialized heart failure care program were 5.7 (0.5), 53 (5), and 8.3 (1.1), respectively. After inclusion, these figures decreased significantly to 1.9 (0.2) (P=.0001), 19 (3) (P=.0001), and 1.2 (0.2) (P=.0001), respectively. During a mean follow-up period of 11 (10) months, 28 patients died (47%) and 23 (38%) underwent heart transplantation. In addition, use of the program led to a reduction in healthcare costs. CONCLUSIONS: Although mortality in end-stage heart failure patients remained very high, use of a specialized advanced heart failure care program decreased the number of hospitalizations, days per hospitalization, and emergency room visits, and reduced the cost of care.


Asunto(s)
Insuficiencia Cardíaca/terapia , Adulto , Anciano , Anciano de 80 o más Años , Presión Sanguínea , Femenino , Estudios de Seguimiento , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/economía , Insuficiencia Cardíaca/mortalidad , Insuficiencia Cardíaca/fisiopatología , Insuficiencia Cardíaca/cirugía , Trasplante de Corazón , Servicios de Atención de Salud a Domicilio , Hospitalización , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Cuidados Paliativos , Educación del Paciente como Asunto , Volumen Sistólico , Factores de Tiempo
9.
Int J Cardiol ; 225: 300-305, 2016 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-27744207

RESUMEN

BACKGROUND: Diagnosis of unrecognized myocardial infarction (UMI) remains an open question in epidemiological and clinical studies, inhibiting effective secondary prevention of myocardial infarction. We aimed to determine the prevalence and incidence of Q-wave UMI in asymptomatic individuals aged 35 to 74years, and to ascertain the positive predictive value (PPV) of asymptomatic Q-wave to diagnose UMI. METHODS: Two population-based cross-sectional studies were conducted, in 2000 (with 10-year follow-up) and in 2005. A baseline electrocardiogram was obtained for each participant. Imaging techniques (echocardiography, cardiac magnetic resonance imaging, and myocardial perfusion single-photon emission computerized tomography) were used to confirm UMI in patients with asymptomatic Q-wave. RESULTS: The prevalence of confirmed Q-wave UMI in the 5580 participants was 0.18% (95% confidence interval [CI]: 0.10-0.33) and the incidence rate was 27.1 Q-wave UMI per 100,000person-years. The proportion of confirmed Q-wave UMI with respect to all prevalent MI was 8.1% (95% CI: 4.4-14.2). The PPV of asymptomatic Q-wave to diagnose Q-wave UMI was 29.2% (95% CI: 18.2-43.2%) overall, but much higher (75%, 95% CI: 40.9-92.9%) in participants with 10-year CHD risk ≥10%, compared to lower-risk participants. CONCLUSION: Opportunistic identification of asymptomatic Q-waves by routine electrocardiogram overestimates actual Q-wave UMI, which represents 8% to 13% of all myocardial infarction in the population aged 35 to 74years. This overestimation is particularly high in the population at low cardiovascular risk. In epidemiological studies and in clinical practice, diagnosis of a pathologic Q-wave in asymptomatic patients requires detailed analysis of imaging tests to confirm or rule out myocardial necrosis.


Asunto(s)
Electrocardiografía/métodos , Infarto del Miocardio/epidemiología , Infarto del Miocardio/fisiopatología , Vigilancia de la Población , Sistema de Registros , Adulto , Anciano , Estudios de Cohortes , Estudios Transversales , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Infarto del Miocardio/diagnóstico por imagen , Vigilancia de la Población/métodos , Prevalencia
10.
Rev Esp Cardiol ; 58(5): 477-83, 2005 May.
Artículo en Español | MEDLINE | ID: mdl-15899192

RESUMEN

INTRODUCTION AND OBJECTIVES: Endothelial dysfunction has been found in patients with idiopathic dilated cardiomyopathy (IDC), but its mechanism remains unknown. Our aim was to investigate whether forearm endothelium-dependent vasoreactivity correlates with cardiac disease severity or neurohormonal activation. PATIENTS AND METHOD: We studied 23 patients with IDC and 10 healthy sex- and age-matched controls using brachial artery ultrasound to assess flow-mediated dilation (FMD) and nitroglycerin-induced vasodilation (NIV). In the IDC group, we determined plasma neurohormone and cytokine levels at the same time. RESULTS: FMD was significantly less in the IDC group compared with the control group [--0.06 (2.8)% vs 4.4 (4.6)%, respectively; P<.01], whereas NIV was similar in both groups [15.0 (6.4)% vs 14.0 (7.4)%, respectively; P=NS]. FMD was significantly less in patients with poorer left ventricular (LV) function and more severe LV dilatation, and in those with a higher tumor necrosis factor-alpha (TNF-alpha) level. NIV was similar in all patient subgroups. There was a significant inverse correlation between the TNF-alpha plasma level and FMD (r=-0.75; P<.01). No correlation was found between the plasma levels of other neurohormones and FMD. CONCLUSIONS: FMD, but not NIV, was impaired in patients with IDC compared with control subjects. In patients, there were significant associations between FMD impairment and the severity of LV dilatation, the severity of LV systolic dysfunction, and the plasma TNF-alpha level. The strongest correlation was observed between TNF-alpha plasma level and FMD. These data suggest that TNF-alpha may be implicated in endothelial dysfunction in patients with IDC.


Asunto(s)
Cardiomiopatía Dilatada/sangre , Cardiomiopatía Dilatada/fisiopatología , Factor de Necrosis Tumoral alfa/análisis , Disfunción Ventricular Izquierda/sangre , Disfunción Ventricular Izquierda/fisiopatología , Brazo/irrigación sanguínea , Cardiomiopatía Dilatada/complicaciones , Endotelio Vascular/fisiopatología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Índice de Severidad de la Enfermedad , Vasodilatación , Disfunción Ventricular Izquierda/complicaciones
13.
Eur J Heart Fail ; 12(5): 492-8, 2010 May.
Artículo en Inglés | MEDLINE | ID: mdl-20360066

RESUMEN

AIMS: Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) play a role in left ventricular structural remodelling. The aim of our study was to analyse MMP-2 and TIMP-1 levels as predictors of poor response to cardiac resynchronization therapy (CRT). METHODS AND RESULTS: A cohort of 42 CRT patients from our centre was prospectively evaluated at baseline and after 12-month follow-up. MMP-2 and TIMP-1 assays were performed prior to CRT implant. Cardiac resynchronization therapy responders were defined as patients who survived, were not transplanted, and increased their basal 6 min walking distance test (6MWDT) by >or=10% or improved their NYHA functional class. Overall, 25 patients (60%) were classed as responders. At 12-month follow-up, six patients (14.2%) had died and one (2.4%) patient had been transplanted. Compared with responders, non-responders had higher levels of TIMP-1 (277 +/- 59 vs. 216 +/- 46 ng/mL, P = 0.001), MMP-2 (325 +/- 115 vs. 258 +/- 56 ng/mL, P = 0.02), and creatinine (1.76 +/- 0.8 vs. 1.25 +/- 0.3 mg/dL, P = 0.01). In a multivariate analysis, TIMP-1 was the only independent predictor of non-response to CRT [OR 0.97, 95% (CI 0.96-0.99) P = 0.005]. TIMP-1>or=248 ng/mL predicted non-response with 71% sensitivity and 72% specificity. CONCLUSION: TIMP-1 is an independent predictor of non-response in patients treated with CRT.


Asunto(s)
Estimulación Cardíaca Artificial , Insuficiencia Cardíaca/enzimología , Metaloproteinasa 2 de la Matriz/sangre , Inhibidor Tisular de Metaloproteinasa-1/sangre , Insuficiencia del Tratamiento , Remodelación Ventricular , Anciano , Intervalos de Confianza , Desfibriladores Implantables , Ecocardiografía , Ecocardiografía Doppler en Color , Prueba de Esfuerzo , Femenino , Indicadores de Salud , Insuficiencia Cardíaca/sangre , Insuficiencia Cardíaca/diagnóstico por imagen , Insuficiencia Cardíaca/fisiopatología , Humanos , Estimación de Kaplan-Meier , Masculino , Metaloproteinasa 2 de la Matriz/metabolismo , Análisis Multivariante , Oportunidad Relativa , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Calidad de Vida , Estadística como Asunto , Inhibidor Tisular de Metaloproteinasa-1/metabolismo , Caminata
17.
Rev. esp. cardiol. (Ed. impr.) ; 59(2): 109-116, feb. 2006. tab, graf
Artículo en Es | IBECS (España) | ID: ibc-043343

RESUMEN

Introducción y objetivos. La insuficiencia cardíaca terminal tiene una morbilidad y una mortalidad muy elevadas. En estos pacientes, la optimización del tratamiento médico es difícil y las medidas paliativas que pueden aliviar los síntomas han sido poco estudiadas. Pacientes y método. El objetivo del estudio es revisar la atención especializada recibida por 61 pacientes con insuficiencia cardíaca severa terminal en un programa realizado en hospital de día y a domicilio. En este programa se facilitaba el control de los síntomas, la optimización del tratamiento médico y la administración de fármacos intravenosos. Resultados. La edad media fue de 64 ± 13 años (rango, 32-87). La fracción de eyección media fue del 23 ± 6%, la presión arterial sistólica de 100 ± 16 mmHg, la natremia de 137 ± 4 mEq, la creatinina de 1,7 ± 0,8 mg/dl y la hemoglobina de 12 ± 2 mg/dl. El número de ingresos hospitalarios, de días de ingreso y de consultas a urgencias en el año previo a la inclusión en el programa de atención especializada fueron de 5,7 ± 0,5; 53 ± 5, y 8,3 ± 1,1 respectivamente, reduciéndose de forma significativa después de la inclusión a 1,9 ± 0,2 (p = 0,0001), 19 ± 3 (p = 0,0001) y 1,2 ± 0,2 (p = 0,0001), respectivamente. La disminución de las hospitalizaciones y las consultas a urgencias se asoció con una reducción del coste sanitario. Conclusiones. Aunque la mortalidad de los pacientes con insuficiencia cardíaca terminal sigue siendo muy elevada, el programa de atención especializada en régimen de hospital de día o a domicilio reduce el número de hospitalizaciones, los días de ingreso, las consultas a urgencias y el coste sanitario en estos pacientes


Introduction and objectives. End-stage heart failure is associated with very high morbidity and mortality. Palliative care has been little studied in affected patients. Patients and method. Between January 1998 and December 2004, 61 patients with end-stage heart failure participated in a specialized advanced heart failure care program. The program included patient education on advanced heart failure, with day-care and home-care elements, and involved intravenous drug administration when necessary. Results. The mean age of the study population was 64 (13) years (range 32-87 years), with 92% being male. Their mean ejection fraction was 23 (6%), mean systolic blood pressure 100 (16) mm Hg, mean blood sodium level 137 (4) mEq, mean creatinine level 1.7 (0.8) mg/dL, and mean hemoglobin level 12 (2) mg/dL. The number of hospitalizations, number of days in hospital per admission, and number of emergency room visits in the year before inclusion in the specialized heart failure care program were 5.7 (0.5), 53 (5), and 8.3 (1.1), respectively. After inclusion, these figures decreased significantly to 1.9 (0.2) (P=.0001), 19 (3) (P=.0001), and 1.2 (0.2) (P=.0001), respectively. During a mean follow-up period of 11 (10) months, 28 patients died (47%) and 23 (38%) underwent heart transplantation. In addition, use of the program led to a reduction in healthcare costs. Conclusions. Although mortality in end-stage heart failure patients remained very high, use of a specialized advanced heart failure care program decreased the number of hospitalizations, days per hospitalization, and emergency room visits, and reduced the cost of care


Asunto(s)
Masculino , Femenino , Adulto , Anciano , Persona de Mediana Edad , Anciano de 80 o más Años , Humanos , Insuficiencia Cardíaca/terapia , Cuidados Paliativos/métodos , Cuidados Paliativos/normas , Enfermo Terminal , Evaluación de Programas y Proyectos de Salud , Proyectos Piloto , España , Índice de Severidad de la Enfermedad
18.
Rev. esp. cardiol. (Ed. impr.) ; 58(5): 477-483, mayo 2005. tab, graf
Artículo en Es | IBECS (España) | ID: ibc-037205

RESUMEN

Introducción y objetivos. La miocardiopatia dilatada idiopática (MCDI) se asocia con disfunción endotelial, aunque se desconoce el mecanismo que la produce. Nuestro objetivo fue estudiar si la vasodilatación dependiente del endotelio (VED) analizada en la arteria humeral se correlaciona con la severidad de la insuficiencia cardíaca o el grado de activación neurohormonal. Pacientes y método. Se estudió a 23 pacientes con MCDI y a 10 sujetos sanos de edad y sexo similares. La VED y la vasodilatación secundaria a nitroglicerina (VD-NTG) se analizaron mediante eco-Doppler de la arteria humeral. También se determinaron las concentraciones de neurohormonas y citocinas en los pacientes con MCDI. Resultados. En los pacientes con MCDI se observó una reducción de la VED en comparación con el grupo control (­-0,06 ± 2,8 frente a 4,4 ± 4,6%, respectivamente, p < 0,01), mientras que la VD-NTG fue similar en ambos grupos (15,0 ± 6,4 frente a 14,0 ± 7,4%, respectivamente; p = NS). La VED fue significativamente menor en los pacientes con peor función ventricular y mayor dilatación ventricular, y también en los que presentaban concentraciones de factor de necrosis tumoral (TNF-α) más elevados. No se observaron diferencias significativas en cuanto a la VD-NTG entre los diferentes subgrupos. Se observó una correlación inversa significativa entre los valores plasmáticos de TNF-α y la VED (r = -­0,75; p < 0,01). Conclusiones. En comparación con el grupo control, los pacientes con MCDI tienen una reducción de la VED y conservan la VD-NTG. La disfunción ventricular severa, el mayor grado de dilatación ventricular y las concentraciones plasmáticas elevadas de TNF-α se asocian con una peor VED, pero la mayor correlación se observó entre los valores de TNF-α y la VED. Estos datos sugieren que el TNF-α puede estar implicado en la aparición de disfunción endotelial en la MCDI (AU)


Introduction and objectives. Endothelial dysfunction has been found in patients with idiopathic dilated cardiomyopathy (IDC), but its mechanism remains unknown. Our aim was to investigate whether forearm endothelium-dependent vasoreactivity correlates with cardiac disease severity or neurohormonal activation. Patients and method. We studied 23 patients with IDC and 10 healthy sex- and age-matched controls using brachial artery ultrasound to assess flow-mediated dilation (FMD) and nitroglycerin-induced vasodilation (NIV). In the IDC group, we determined plasma neurohormone and cytokine levels at the same time. Results. FMD was significantly less in the IDC group compared with the control group [­-0.06 (2.8)% vs 4.4 (4.6)%, respectively; P<.01], whereas NIV was similar in both groups [15.0 (6.4)% vs 14.0 (7.4)%, respectively; P=NS]. FMD was significantly less in patients with poorer left ventricular (LV) function and more severe LV dilatation, and in those with a higher tumor necrosis factor-α (TNF-α) level. NIV was similar in all patient subgroups. There was a significant inverse correlation between the TNF-α plasma level and FMD (r=­0.75; P<.01). No correlation was found between the plasma levels of other neurohormones and FMD. Conclusions. FMD, but not NIV, was impaired in patients with IDC compared with control subjects. In patients, there were significant associations between FMD impairment and the severity of LV dilatation, the severity of LV systolic dysfunction, and the plasma TNF-α level. The strongest correlation was observed between TNF-α plasma level and FMD. These data suggest that TNF-α may be implicated in endothelial dysfunction in patients with IDC (AU)


Asunto(s)
Humanos , Disfunción Ventricular , Vasodilatación , Endotelio Vascular , Cardiomiopatía Dilatada , Factor de Necrosis Tumoral alfa
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