The Relationship of IL-8 and IL-10 Myokines and Performance in Male Marathon Runners Presenting Exercise-Induced Bronchoconstriction.

At present, it is unclear which exercise-induced factors, such as myokines, could diminish the negative impact of the reduction in pulmonary function imposed by the exercise in question. In this study, we aim to evaluate the prevalence of exercise-induced bronchoconstriction (EIB) and also to investigate the effect of myokines in the performance of marathon runners presenting EIB or not. Thirty-eight male recreational marathon runners (age 38.8 [33-44], height 175.7 [172.0-180.3]; weight 74.7 [69.3-81.6]) participated in this study, and through spirometry tests, a prevalence of 23.6% of EIB was found, which is in agreement with the literature. The volunteers who tested positive to EIB (EIB+) presented lower maximum aerobic capacity compared to those who tested negative (EIB-) (EIB+ 44.02 [39.56-47.02] and EIB- 47.62 [44.11-51.18] p = 0.03). The comparison of plasma levels of IL-1ß (EIB+ p = 0.296, EIB- p = 0.176, EIB+ vs. EIB- baseline p = 0.190 immediately after p = 0.106), IL-4 (undetectable), IL-6 (EIB+ p = 0.003, EIB- p ≤ 0.001, EIB+ vs. EIB- baseline p = 0.301 immediately after p = 0.614), IL-8 (EIB+ p = 0.003, EIB- p ≤ 0.001, EIB+ vs. EIB- baseline p = 0.110 immediately after p = 0.453), IL-10 (EIB+ p = 0.003, EIB- p ≤ 0.001, EIB+ vs. EIB- baseline p = 0.424 immediately after p = 0.876) and TNF-α (EIB+ p = 0.003, EIB- p ≤ 0.001, EIB+ vs. EIB- baseline p = 0.141 immediately after p = 0.898) were similar in both groups 24 h before and immediately after the marathon. However, negative correlations were found between the marathon finishing time and the levels of IL-8 (r = -0.81, p = 0.022), and IL-10 (r = -0.97, p ≤ 0.001) immediately after completing the marathon. In conclusion, for the first time, it is shown that the myokines IL-8 and IL-10 are related to improvement of the performance of marathon runners presenting EIB.

The relationship of IL-8 and IL-10 myokines and performance in male marathon runners presenting exercise-induced bronchoconstriction

ABSTRACT: At present, it is unclear which exercise-induced factors, such as myokines, could diminish the negative impact of the reduction in pulmonary function imposed by the exercise in question. In this study, we aim to evaluate the prevalence of exercise-induced bronchoconstriction (EIB) and also to investigate the effect of myokines in the performance of marathon runners presenting EIB or not. Thirty-eight male recreational marathon runners (age 38.8 [33­44], height 175.7 [172.0­180.3]; weight 74.7 [69.3­81.6]) participated in this study, and through spirometry tests, a prevalence of 23.6% of EIB was found, which is in agreement with the literature. The volunteers who tested positive to EIB (EIB+) presented lower maximum aerobic capacity compared to those who tested negative (EIB−) (EIB+ 44.02 [39.56­47.02] and EIB− 47.62 [44.11­51.18] p = 0.03). The comparison of plasma levels of IL-1ß (EIB+ p = 0.296, EIB− p = 0.176, EIB+ vs. EIB− baseline p = 0.190 immediately after p = 0.106), IL-4 (undetectable), IL-6 (EIB+ p = 0.003, EIB− p ≤ 0.001, EIB+ vs. EIB− baseline p = 0.301 immediately after p = 0.614), IL-8 (EIB+ p = 0.003, EIB− p ≤ 0.001, EIB+ vs. EIB− baseline p = 0.110 immediately after p = 0.453), IL-10 (EIB+ p = 0.003, EIB− p ≤ 0.001, EIB+ vs. EIB− baseline p = 0.424 immediately after p = 0.876) and TNF-α (EIB+ p = 0.003, EIB− p ≤ 0.001, EIB+ vs. EIB− baseline p = 0.141 immediately after p = 0.898) were similar in both groups 24 h before and immediately after the marathon. However, negative correlations were found between the marathon finishing time and the levels of IL-8 (r = −0.81, p = 0.022), and IL-10 (r = −0.97, p ≤ 0.001) immediately after completing the marathon. In conclusion, for the first time, it is shown that the myokines IL-8 and IL-10 are related to improvement of the performance of marathon runners presenting EIB.

Transporte óseo con método Ilizarov en el tratamiento de pseudoartrosis infectada de tibia / Ilizarov bone transport for treating infected tibial pseudoarthrosis

Introducción: el manejo de fracturas abiertas de tibia con pérdida ósea constituye un reto para el cirujano ortopédico debido al gran número de complicaciones y fracasos terapéuticos con un alto costo social y económico para el sistema de salud, por lo cual es necesario contar con un método que, además de accesible económicamente, presente buenos resultados terapéuticos. Materiales y métodos: se realizó un trabajo descriptivo tipo serie de casos con pacientes provenientes de diferentes unidades de salud con osteomielitis confirmada durante el periodo comprendido entre los años 2000 y 2008. Se realizaron cirugías reconstructivas en pacientes con graves lesiones óseas por fracturas abiertas infectadas en tibia, eligiendo pacientes con pérdidas óseas mayores o iguales a 4 centímetros, realizadas por un mismo cirujano ortopedista mediante el método de Ilizarov. Resultados: se seleccionaron 18 pacientes para el estudio, 15 hombres y 3 mujeres, con un promedio de edad de 31 años. Se les realizó transporte óseo de 4 a 14 cm con una media de 7 cm. Se encontraron excelentes resultados con una adecuada consolidación y cura de la infección en la totalidad de los pacientes. La infección superficial en el trayecto de los clavos y el dolor durante el transporte óseo fueron las complicaciones más frecuentes. Discusión: a pesar del gran desarrollo tecnológico en los sistemas de fijación externa, los principios del sistema de Ilizarov continúan vigentes, convirtiéndolo en una gran opción terapéutica para las fracturas abiertas de tibia con pérdida ósea, debido a su bajo costo frente a otros métodos de fijación externa y a su eficacia terapéutica.