The Association of Elevated Alanine Aminotransferase and the Metabolic Syndrome in an Overweight and Obese Pediatric Population of Multi-ethnic Origin
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We studied the association between alanine aminotransferase (ALT) and features of the metabolic syndrome in a cohort of overweight and obese children aged 3-18 years. An oral glucose tolerance test was performed in 443 consecutive children from an obesity out-patient clinic (median age 11.2, range 3.1-18.0 years; n=240 boys) of multi-ethnic origin. The prevalence of the metabolic syndrome, insulin resistance, elevated ALT (>30 IU/L), and the association of ALT with (components of) the metabolic syndrome was assessed. The metabolic syndrome was present in 26.9%. Elevated ALT levels were found in 20.3%, with a higher prevalence in boys than in girls (25.8% versus 13.8%, P<0.001). ALT was associated with the prevalence of the metabolic syndrome, insulin resistance, high triglycerides, and low HDL-cholesterol after adjustment for gender, age, and BMI. In conclusion, elevated ALT levels were highly prevalent and associated with the metabolic syndrome, insulin resistance, high triglycerides, and low HDL-cholesterol in an obese multiethnic pediatric population.
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