[Cardiovascular risk and insulin resistance in childhood leukemia survivors]. / Riesgo cardiovascular y resistencia insulínica en supervivientes de leucemia infantil.

Introduction: Material and methods: a retrospective study of childhood acute leukemia survivors. Survivors with a diagnosis of leukemia before 16 years of age in a tertiary hospital, during the period of 1998-2018, were selected, who had completed their treatment at least two years earlier. We examined: blood adipokine levels and carbohydrate metabolism, body composition by bioimpedance, and carotid status by ultrasound. Somatometric measures were also taken. Results: the registry showed 82 children diagnosed with acute leukemia, aged between 6 and 16 years. Only 22 met the criteria to be included in the study. Results reveled that 32 % of the sample met the criteria for overweight-obesity, and 36 % had high insulin resistance indexes (IR). Leptin levels were higher in women (15.45 vs. 3.25; p = 0.044) and in obese and overweight subjects, as was the leptin/adiponectin ratio, which rises in the presence of IR (2.52 vs. 0.45; p = 0.037). We observed an increase in carotid intima-media thickness in relation to BMI (0.008; CI, -0.002 to 0.013; p = 0.007) without any association with an increase in fat mass in these patients (0.204; CI, -0.043 to 0.451; p = 0.101). Conclusions: childhood leukemia survivors have a high cardiovascular risk, characterized by an increase in IR, not associated with an increase in fat mass. This risk could justify the implementation of preventive actions in these long-lived patients.

Introducción: Material y métodos: estudio retrospectivo de supervivientes de leucemia aguda en edad infantil. Se seleccionaron aquellos supervivientes con diagnóstico de leucemia antes de los 16 años de edad, en un hospital de tercer nivel y durante el período 1998-2018, que hubieran finalizado su tratamiento como mínimo dos años antes. Se analizaron: niveles de adipokinas y metabolismo hidrocarbonado en sangre, composición corporal mediante bioimpedancia y evaluación ecográfica carotídea. Se tomaron además datos somatométricos. Resultados: de 82 niños con diagnóstico de leucemia aguda, con edades comprendidas entre 6 y 16 años, incluidos en el registro, solamente 22 cumplieron los criterios para ser incluídos en el estudio. Entre los resultados destaca que el 32 % de la muestra cumplían los criterios de sobrepeso-obesidad y el 36 % presentaban índices de resistencia insulínica (RI) elevados. Los niveles de leptina fueron más elevados en las mujeres (15,45 vs. 3,25; p = 0,044) y en los individuos con obesidad o sobrepeso, así como la ratio leptina/adiponectina, que se eleva en presencia de RI (2,52 vs. 0,45; p = 0,037). Se observó un incremento del grosor mediointimal carotídeo en relación con el IMC (0,008; IC: -0,002 a 0,013; p = 0,007) sin asociarse a un aumento de masa grasa en estos pacientes (0,204; IC: -0,043 a 0,451; p = 0,101). Conclusiones: los pacientes supervivientes de leucemia en la edad infantil tienen un riesgo cardiovascular elevado, caracterizado por un aumento de la RI no asociado a aumento de la masa grasa. Este riesgo podría justificar la implementación de medidas preventivas en estos pacientes, cada vez más longevos.

Riesgo cardiovascular y resistencia insulínica en supervivientes de leucemia infantil / Cardiovascular risk and insulin resistance in childhood leukemia survivors

Material y métodos: estudio retrospectivo de supervivientes de leucemia aguda en edad infantil. Se seleccionaron aquellos supervivientes con diagnóstico de leucemia antes de los 16 años de edad, en un hospital de tercer nivel y durante el período 1998-2018, que hubieran finalizado su tratamiento como mínimo dos años antes. Se analizaron: niveles de adipokinas y metabolismo hidrocarbonado en sangre, composición corporal mediante bioimpedancia y evaluación ecográfica carotídea. Se tomaron además datos somatométricos. Resultados: de 82 niños con diagnóstico de leucemia aguda, con edades comprendidas entre 6 y 16 años, incluidos en el registro, solamente 22 cumplieron los criterios para ser incluídos en el estudio. Entre los resultados destaca que el 32 % de la muestra cumplían los criterios de sobrepeso-obesidad y el 36 % presentaban índices de resistencia insulínica (RI) elevados. Los niveles de leptina fueron más elevados en las mujeres (15,45 vs. 3,25; p = 0,044) y en los individuos con obesidad o sobrepeso, así como la ratio leptina/adiponectina, que se eleva en presencia de RI (2,52 vs. 0,45; p = 0,037). Se observó un incremento del grosor mediointimal carotídeo en relación con el IMC (0,008; IC: -0,002 a 0,013; p = 0,007) sin asociarse a un aumento de masa grasa en estos pacientes (0,204; IC: -0,043 a 0,451; p = 0,101). Conclusiones: los pacientes supervivientes de leucemia en la edad infantil tienen un riesgo cardiovascular elevado, caracterizado por un aumento de la RI no asociado a aumento de la masa grasa. Este riesgo podría justificar la implementación de medidas preventivas en estos pacientes, cada vez más longevos. (AU)

Material and methods: a retrospective study of childhood acute leukemia survivors. Survivors with a diagnosis of leukemia before 16 years of age in a tertiary hospital, during the period of 1998-2018, were selected, who had completed their treatment at least two years earlier. We examined: blood adipokine levels and carbohydrate metabolism, body composition by bioimpedance, and carotid status by ultrasound. Somatometric measures were also taken. Results: the registry showed 82 children diagnosed with acute leukemia, aged between 6 and 16 years. Only 22 met the criteria to be included in the study. Results reveled that 32 % of the sample met the criteria for overweight-obesity, and 36 % had high insulin resistance indexes (IR). Leptin levels were higher in women (15.45 vs. 3.25; p = 0.044) and in obese and overweight subjects, as was the leptin/adiponectin ratio, which rises in the presence of IR (2.52 vs. 0.45; p = 0.037). We observed an increase in carotid intima-media thickness in relation to BMI (0.008; CI, -0.002 to 0.013; p = 0.007) without any association with an increase in fat mass in these patients (0.204; CI, -0.043 to 0.451; p = 0.101). Conclusions: childhood leukemia survivors have a high cardiovascular risk, characterized by an increase in IR, not associated with an increase in fat mass. This risk could justify the implementation of preventive actions in these long-lived patients. (AU)

A Dynamic Approach for Early Risk Prediction of Gram-Negative Bloodstream Infection and Systemic Inflammatory Response Syndrome in Febrile Pediatric Hemato-Oncology Patients.

Background: The aim of this study was to evaluate the usefulness of C-Reactive Protein (CRP), Procalcitonin (PCT), and Interleukine 6 (IL6) biomarkers in predicting the existence of high-risk episodes (HRE) during the first 24 h of fever in pediatric cancer patients. HRE were defined as the presence of Gram-negative bloodstream infections or Systemic Inflammatory Response Syndrome. Methods: The study included 103 consecutive fever episodes in 44 hemato-oncological pediatric patients, from whom samples for biomarkers were taken upon initial evaluation (CRP-1, PCT-1 and IL6-1) and then between 12 and 24 h afterward (CRP-2, PCT-2 and IL6-2). Results: An IL6-1 value higher than 164 pg/mL showed an area under the curve (AUC) of 0.890 (0.791−0.989) and OR of 48.68 (7.92−951.42, p < 0.001) to detect HRE in multivariate analysis. A PCT-1 higher than 0.32 ng/mL showed an AUC of 0.805 (0.700−0.910) and OR of 4.55 (0.90−27.84, p = 0.076). A PCT-2 higher than 0.94 ng/mL showed an AUC of 0.836 (0.725−0.947) and OR of 13.01 (1.82−149.13, p = 0.018), and an increase in CRP between the first and second sample (CRP-2vs1) higher than 291% also showed an AUC of 0.785 (0.655−0.915) and OR of 31.09 (4.87−355.33, p = 0.001). Conclusions: IL6-1, PCT-2, and CRP-2vs1 showed a strong and independent correlation with HREs in pediatric cancer patients. CRP variations over the first 24 h provide an improvement in predictive models that are especially useful if IL-6 and PCT are not available.

Venous thromboembolism in pediatric patients with acute lymphoblastic leukemia under chemotherapy treatment. Risk factors and usefulness of thromboprophylaxis. Results of LAL-SEHOP-PETHEMA-2013.

INTRODUCTION: Symptomatic venous thromboembolism (VTE) is diagnosed in 3%-14% of patients during pediatric acute lymphoblastic leukemia (ALL) therapy. There are well-known risk factors, but the role of others as inherited thrombophilia is still controversial. Prophylaxis with low molecular weight heparin (LMWH) has been described, but its use is not globally accepted. METHODS: A retrospective multicentric study in ALL patients 1-18 years old following SEHOP-PETHEMA-2013 treatment guideline was performed to evaluate VTE rate, anticoagulant treatment, outcome, risk factors, and safety and usefulness of LMWH administration as primary thromboprophylaxis in children with inherited thrombophilia. RESULTS: A total of 652 patients were included in the study. VTE incidence was 8.7%. Most of the cases occurred during induction therapy associated with central venous catheter. Univariant analysis showed that family history of thrombosis, presence of mediastinal mass, high-risk treatment group, and inherited thrombophilia were statistically significant risk factors. LMWH administration seemed to decrease VTE rate in patients with inherited thrombophilia and those with T-cell ALL phenotype. CONCLUSION: Most of the VTE cases occurred in patients without inherited thrombophilia, but when it is present, the VTE risk is higher. LMWH administration was useful to decrease VTE in these patients.