Clustered Cardiovascular Risk Factors Are Associated with Inflammatory Markers in Adolescents.

BACKGROUND: Clusters of cardiovascular risk (CVR) factors are associated with an increased risk of developing cardiovascular diseases (CVDs). This cross-sectional study assessed the associations between classic CVR factor clusters and inflammatory markers in Brazilian adolescents. METHODS: Measurements included anthropometric, clinical and biochemical parameters and selected inflammatory markers in 487 adolescents (236 boys/251 girls; 12.06 ± 1.41 years). RESULTS: After stratifying the population by gender and adjusting for potential confounding variables, principal component analysis was performed and it produced 5 independent components in both genders: adiposity, glucose metabolism, blood pressure, high-density lipoprotein (HDL)/triacylglycerols (TG), and cholesterol/low-density lipoprotein. Glucose metabolism was inversely associated with interleukin-1ß (IL-1ß) in both genders (r = -0.026; r = -0.021); blood pressure was inversely associated with tumor necrosis factor alpha (TNF-α) in girls (r = -0.046); HDL/TG was positively associated with interleukin-6 in girls (r = 0.012), with IL-1ß (r = 0.010) TNF-α (r = 0.045) in boys, and inversely associated with adiponectin in both genders (r = -0.015; r = -0.013). CONCLUSION: The results suggest that lipid metabolism alterations, as potential early events in the development of CVDs, have a strong link to the inflammatory process, in contrast to other clusters of risk factors.

[Not Available]. / Vaspin association with insulin resistance is related to physical activity and body fat in Brazilian adolescents - A cross-sectional study.

BACKGROUND: Vaspin is a newly-identifi ed adipocytokine associated with insulin resistance (IR). OBJECTIVE: The aim of this study was to investigate the correlation between plasma vaspin concentrations and IR and determine whether this association is affected by body composition, physical activity and pubertal stage in adolescents. METHODS: Were studied 484 Brazilian adolescents aged 10-14 years whose anthropometric, clinical, biochemical, and lifestyle measurements were analized. We evaluated the correlation between vaspin and risk factors for IR in adolescents with normal and high body fat percentage (%BF) and did a logistic regression to calculate the odds ratio for IR according to vaspin quartiles sex specifi c for the sample. RESULTS: Vaspin was positively correlated with IR in adolescents with high %BF (r = 0.23, p = 0.003). The logistic regression analysis adjusted for sex, age, BMI, and pubertal stage showed that adolescents in the 2nd (OR = 0.43, 95% CI = 0.23-0.80, p = 0.008) and 3rd (OR = 0.46, 95% CI = 0.25-0.85, p = 0.014) quartile of vaspin concentration had a lower risk for IR. When the model was adjusted for %BF and physical activity, the association remained statically signifi cant only for adolescents in the 2nd quartile. CONCLUSION: Vaspin was correlated positively with risk factors associated with insulin metabolism in adolescents with high %BF. Vaspin was associated with a reduced risk of IR independently of BMI and pubertal stage and the association was infl uenced by body fat and physical activity in these adolescents.

Vaspin association with insulin resistance is related to physical activity and body fat in Brazilian adolescents - A cross-sectional study / La asociación de la vaspina con la resistencia a la insulina está relacionada con la actividad física y la grasa corporal en adolescentes brasileños. Un estudio transversal

Background: Vaspin is a newly-identified adipocytokine associated with insulin resistance (IR). Objective: The aim of this study was to investigate the correlation between plasma vaspin concentrations and IR and determine whether this association is affected by body composition, physical activity and pubertal stage in adolescents. Methods: Were studied 484 Brazilian adolescents aged 10-14 years whose anthropometric, clinical, biochemical, and lifestyle measurements were analized. We evaluated the correlation between vaspin and risk factors for IR in adolescents with normal and high body fat percentage (%BF) and did a logistic regression to calculate the odds ratio for IR according to vaspin quartiles sex specific for the sample. Results: Vaspin was positively correlated with IR in adolescents with high %BF (r = 0.23, p = 0.003). The logistic regression analysis adjusted for sex, age, BMI, and pubertal stage showed that adolescents in the 2nd (OR = 0.43, 95% CI = 0.23-0.80, p = 0.008) and 3rd (OR = 0.46, 95% CI = 0.25-0.85, p = 0.014) quartile of vaspin concentration had a lower risk for IR. When the model was adjusted for %BF and physical activity, the association remained statically significant only for adolescents in the 2nd quartile. Conclusion: Vaspin was correlated positively with risk factors associated with insulin metabolism in adolescents with high %BF. Vaspin was associated with a reduced risk of IR independently of BMI and pubertal stage and the association was influenced by body fat and physical activity in these adolescents (AU)

Introducción: la vaspina es una adipocitoquina recientemente identificada que confiere resistencia a la insulina (IR). Objetivo: el objetivo de este estudio fue investigar la correlación entre las concentraciones plasmáticas de vaspina y la IR para determinar si esta asociación se ve afectada por la composición corporal, la actividad física y la etapa de la pubertad en los adolescentes. Métodos: fueron analizados las medidas antropométricas, clínicas, bioquímicas y el estilo de vida de 484 adolescentes brasileños de entre 10 y 14 años. Se evaluó la correlación entre los factores de riesgo para vaspina e IR en los adolescentes con porcentaje de grasa corporal normal y alto (%CG) e hicimos una regresión logística para calcular el cociente de probabilidad del IR de acuerdo con los cuartiles de vaspina para la muestra, con respecto al sexo. Resultados: la vaspina se correlacionó positivamente con IR en adolescentes con alto %CG (r = 0,23; p = 0,003). El análisis de regresión logística ajustada por sexo, edad, índice de masa corporal y etapa puberal mostró que los adolescentes en el segundo (OR = 0,43; IC del 95% = desde 0,23 hasta 0,80, p = 0,008) y tercer (OR = 0,46; IC del 95% = 0,25-0,85, p = 0,014) cuartil de concentración de vaspina tenían un menor riesgo de IR. Cuando el modelo se ajustó para %GC y actividad física, la asociación siguió siendo estadísticamente significativa solo para los adolescentes en el segundo cuartil. Conclusión: la vaspina se correlacionó positivamente con los factores de riesgo asociados con el metabolismo de la insulina en los adolescentes con alto %GC. Asimismo, se asoció con un menor riesgo de IR independientemente del índice de masa corporal y de etapa de la pubertad, y la asociación estuvo influenciada por la grasa corporal y la actividad física en estos adolescentes (AU)