Introduction:
Children and adolescents treated with anthracyclines are at increased risk of developing cardiomyopathy. Although several guidelines are available, no consensus exists on an optimal strategy scheme for predict or avoid anthracycline-induced cardiotoxicity.
Methods:
Cardiotoxicity was defined as a reduction in left ventricle ejection fraction >10% from baseline and <53%, and/or global longitudinal strain drop of >15%.The incidence of cardiotoxicity, its relation with cumulative anthracycline doses, clinical significance and reversibility were retrospectively evaluated in a paediatric population (0-18 years) treated with anthracycline at a tertiary hospital (2010-2020). Analysis of 3 genetic polymorphisms related to cardiotoxicity (RARG (rs2229774), SLC28A3(rs7853758) and UGT1A6(rs17863783)) was performed.
Results:
A total of 84 patients (45 males) were included. The mean age at diagnosis was 10.7± 3.8 years with average cumulative anthracycline dose 195 mg/m2 (60-460mg/m2). Median follow-up was 5 years. Anthracycline-induced cardiotoxicity occurred in 12 (14,2%) of treated patients, 75% were asymptomatic. 5 patients experimented acute cardiotoxicity during treatment. 8 patients were treated with ACE-inhibitors and/or beta-blockers. 11 patients had full function recovery. Cumulative doxorubicin dose was a risk factor of cardiotoxicity, being affected 9/20 treated with >250 mg/m2; 3/51 treated with 100-250m2; while no patient out of 13 receiving <100 mg/m2 had an abnormal echocardiogram (P <0.01). A higher percentage of patients treated with mediastinum radiation and chemotherapy (3/7:42%) presented cardiotoxicity compared to those with chemotherapy only (9/77:9%) (p0.09). Younger age, female sex or the presence of genetic polymorphisms studied were not statistically significant risk factors.
Conclusions:
Dose-dependent anthracycline risk for developing cardiomyopathy was confirmed. However, previously identified risk factors including female sex, early age at diagnosis and genetic polymorphism were not replicated in this population, possibly due to the small sample size and the relatively short follow-up period. A tailored monitoring strategy based on cardiac risk stratification is needed.
Modificaciones de la fibrosis hepática valorada mediante elastometría transitoria en pacientes con respuesta viral sostenida tras el tratamiento de la hepatitis C en pacientes monoinfectados (VHC) y coinfectados (VHC-VIH) Resumen Introducción: Se ha observado que los pacientes infectados por el virus de la hepatitis C (VHC), que ya han desarrollado un grado de fibrosis significativo, son capaces de disminuir ese grado de fibrosis, al alcanzar una respuesta viral sostenida (RVS) tras el tratamiento con interferón pegilado (PEG-IFN) y ribavirina (RBV). Objetivo: Evaluar la modificación de la fibrosis, medida por elastometría transitoria, al erradicar el VHC tanto en pacientes tratados con PEG-IFN y RBV, con Boceprevir/Telaprevir, como con agentes de acción directa (AAD) y determinar la asociación entre la variación de la fibrosis y el grado de fibrosis previo al tratamiento tanto en pacientes monoinfectados (VHC), como en coinfectados (VIH/VHC). Métodos: Estudio observacional prospectivo, en el que se estudiaron 50 pacientes y se evaluó su grado de fibrosis previo y posterior al tratamiento. Resultados: De los 62 pacientes, un 45,2% disminuyeron su fibrosis, con una media de descenso de 9,45kPa y un 45,2% disminuyeron al menos un estadio en la escala Metavir. Se observó una asociación entre un menor grado de fibrosis previo al tratamiento y un mayor descenso de la misma (p<0,001). Sin embargo no se observaron diferencias (p=0,713) entre la monoinfección y la coinfección con VIH; tampoco se detectó asociación significativa, entre los tres tipos de tratamientos y la modificación de la fibrosis (p=0,445). Conclusiones: En nuestro estudio, la consecución de la RVS en los pacientes con hepatitis crónica por VHC facilita la reducción de la fibrosis producida por la enfermedad, tanto en pacientes monoinfectados, como en coinfectados (VIH/VHC), independientemente del tratamiento usado.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.