title: Insulin sensitivity indices: fasting versus glucose-stimulated ındices in pediatric non-alcoholic fatty liver disease.
abstract: OBJECTIVE
  We aimed to compare insulin sensitivity indices, fasting vs glucose stimulated, in children and adolescents with non-alcoholic fatty liver disease.
  
  
  METHODS
  Two hundred-eleven obese children with median age of 11.24 ± 2.65 years were evaluated. After initial clinical and anthropometric examination, B-mode ultrasonography (USG) was performed and all subjects underwent Oral Glucose Tolerance Test (OGTT). Quantitative insulin sensitivity check index (QUICKI), homeostatic model assessment for insulin resistance (Homa-IR), the insulinogenic index (IGI), the Matsuda index, and the oral glucose insulin sensitivity (OGIS) model were used to determine peripheral insulin sensitivity.
  
  
  RESULTS
  59.24% (68 boys, 57 girls) of obese children had NALFD. The prevalence of FLD in obese adolescents was significantly higher than in prepubertal children (65.8% vs. 51.5%). Fasting glucose, insulin, Homa-IR, QUICKI, and OGIS and Matsuda were significantly different between subjects with and without NALFD. Insulin and glucose indices were not found to be significantly different in the prepubertal group, whereas Homa-IR, QUICKI, Matsuda, and OGIS were significantly different in the pubertal group. Age, waist circumference, and OUICKI were found to be risk factors associated with the presence of NALFD in the logistic-regression analysis.
  
  
  CONCLUSIONS
  Age, waist circumference, and OUICKI were found to be risk factors associated with NALFD. As the value of QUICKI decreases, the probability of having steatosis increases. Although OGTT results gave the information about the glucose tolerance of a subject, indices derived from OGTT were not found to be superior to the traditional surrogates such as Homa-IR or QUICKI.
authors.affiliation: Department of Pediatrics, Division of Pediatric Endocrinology, Pamukkale University, School of Medicine, Denizli, Turkey. bayramozhan@yahoo.com.
authors.forename: B
authors.initials: B
authors.lastname: Ozhan
authors.forename: B
authors.initials: B
authors.lastname: Ersoy
authors.forename: S
authors.initials: S
authors.lastname: Kiremitci
authors.forename: M
authors.initials: M
authors.lastname: Ozkol
authors.forename: F
authors.initials: F
authors.lastname: Taneli
mesh_terms: D001786:Blood Glucose / Q000032:analysis / Q000378:metabolism*; D002648:Child; D005215:Fasting / Q000097:blood*; D005260:Female; D005947:Glucose / Q000008:administration & dosage; D006801:Humans; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance; D008297:Male; D065626:Non-alcoholic Fatty Liver Disease / Q000097:blood*; D009765:Obesity / Q000097:blood; D012307:Risk Factors
chemical_list: D001786:Blood Glucose; D007328:Insulin; D005947:Glucose