title: Elevated 1 h postload plasma glucose levels identify adults with normal glucose tolerance but increased risk of non-alcoholic fatty liver disease.
abstract: OBJECTIVE
  To determine the ability of the proposed diagnostic value of a 1-h OGTT glucose ≥155mg/dL to identify individuals with non-alcoholic fatty liver disease (NAFLD) diagnosed by ultrasonography in a cohort of adult white individuals.
  
  
  METHODS
  The study group comprised 710 white individuals participating to the CATAnzaro MEtabolic RIsk factors (CATAMERI) Study, a cross-sectional study assessing cardio-metabolic risk factors in individuals carrying at least one risk factor including dysglycemia, overweight/obesity, hypertension, dyslipidemia. a 75 g oral Oral Glucose Tolerance Test (OGTT) was performed with 0, 30, 60, 90 and 120 min sampling for plasma glucose and insulin measurements. Cardio-metabolic risk factors including alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyltransferase (GGT) were assessed in the whole cohort.
  
  
  RESULTS
  Of the 710 participants examined, 295 had normal glucose tolerance (NGT) with 1-hour post-load plasma glucose <155 mg/dL (NGT 1h-low), 109 individuals had NGT 1h-high, 104 had isolated impaired fasting glucose (IFG), and 202 had impaired glucose tolerance (IGT). As compared with NGT 1h-low, NGT 1h-high and IGT subjects exhibited significantly higher body mass index (BMI), triglycerides, high sensitivity C reactive protein, ALT, GGT, and hepatic insulin resistance (IR), assessed by the liver IR index, as well as lower high density lipoprotein, and insulin-like growth factor-1 (IGF-1) levels. In a logistic regression analysis adjusted for age, gender, and BMI, NGT 1h-high participants had a 1.5-fold increased risk of having NAFLD and an even increased risk was observed in subjects with IGT (1.8-fold), but not in the isolated IFG group (1.01-fold).
  
  
  CONCLUSIONS
  These data suggest that the value of a 1-hour OGTT glucose ≥155 mg/dL may be helpful to identify a subset of NGT individuals at risk for NAFLD.
authors.affiliation: Department of Medical and Surgical Sciences , Viale Europa, University Magna-Græcia of Catanzaro , Catanzaro , Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Sesti
authors.affiliation: Department of Medical and Surgical Sciences , Viale Europa, University Magna-Græcia of Catanzaro , Catanzaro , Italy.
authors.forename: Marta Letizia
authors.initials: ML
authors.lastname: Hribal
authors.affiliation: Department of Medical and Surgical Sciences , Viale Europa, University Magna-Græcia of Catanzaro , Catanzaro , Italy.
authors.forename: Teresa Vanessa
authors.initials: TV
authors.lastname: Fiorentino
authors.affiliation: Department of Medical and Surgical Sciences , Viale Europa, University Magna-Græcia of Catanzaro , Catanzaro , Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Sciacqua
authors.affiliation: Department of Medical and Surgical Sciences , Viale Europa, University Magna-Græcia of Catanzaro , Catanzaro , Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Perticone
keywords: IGT; NAFLD; OGTT