title: Oxidized HDL and LDL in adolescents with type 2 diabetes compared to normal weight and obese peers.
abstract: OBJECTIVE
  Obesity and type 2 diabetes mellitus (T2DM) are associated with oxidative stress. Oxidative damage of high-density lipoprotein (oxHDL) leads to a dysfunctional molecule, potentially a mediator and/or marker of cardiometabolic disease. We tested the hypothesis that circulating concentration of oxHDL is higher in obese (Ob) or T2DM adolescents compared to normal-weight (NW) peers.
  
  
  METHODS
  In 37 NW, 38 Ob, and 42 T2DM adolescents, ages 11-18 y, fasting concentrations of HDL and LDL cholesterol, oxHDL, oxidized low-density lipoprotein (oxLDL), and myeloperoxidase (MPO) were measured.
  
  
  RESULTS
  Compared to the NW group, oxHDL in the Ob group was not different, but was 65% higher (p < 0.01) in the T2DM group. Within the T2DM group oxHDL was higher in boys than in girls, but this sex difference was not evident in NW or Ob groups. OxLDL was 23% higher in Ob (p = 0.02), and 56% higher in T2DM (p < 0.01) versus NW and did not differ between boys and girls. MPO was not different between NW and Ob but was 88% (p < 0.02) higher in T2DM compared to NW. Contrary to our hypothesis MPO and insulin resistance (HOMA-IR) were not correlated with oxHDL. OxHDL was positively associated with oxLDL and lean body mass while oxLDL was positively associated with apolipoprotein B, triglycerides, HOMA-IR and trunk fat.
  
  
  CONCLUSIONS
  The higher concentrations of oxHDL and oxLDL, along with higher MPO in children with T2DM reflect higher oxidative stress compared with obesity alone and potentially increased cardiovascular disease risk in youth with T2DM.
authors.affiliation: Pediatrics, Section of Diabetes/Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
authors.forename: Monica T
authors.initials: MT
authors.lastname: Marin
authors.affiliation: Pediatrics, Section of Diabetes/Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
authors.forename: Paul S
authors.initials: PS
authors.lastname: Dasari
authors.affiliation: Pediatrics, Section of Diabetes/Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
authors.forename: Jeanie B
authors.initials: JB
authors.lastname: Tryggestad
authors.affiliation: Pediatrics, Biomedical and Behavioral Methodology Core, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
authors.forename: Christopher E
authors.initials: CE
authors.lastname: Aston
authors.affiliation: Pediatrics, Section of Diabetes/Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
authors.forename: April M
authors.initials: AM
authors.lastname: Teague
authors.affiliation: Pediatrics, Section of Diabetes/Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma. Electronic address: kevin-short@ouhsc.edu.
authors.forename: Kevin R
authors.initials: KR
authors.lastname: Short
mesh_terms: D000293:Adolescent; D015415:Biomarkers / Q000097:blood; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000150:complications* / Q000453:epidemiology; D002648:Child; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000150:complications; D003925:Diabetic Angiopathies / Q000453:epidemiology; D058065:Diabetic Cardiomyopathies / Q000453:epidemiology; D005260:Female; D006801:Humans; D007333:Insulin Resistance; D008075:Lipoproteins, HDL / Q000097:blood* / Q000737:chemistry; D008077:Lipoproteins, LDL / Q000097:blood* / Q000737:chemistry; D008297:Male; D009825:Oklahoma / Q000453:epidemiology; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D063766:Pediatric Obesity / Q000097:blood*; D009195:Peroxidase / Q000032:analysis; D012307:Risk Factors
chemical_list: D015415:Biomarkers; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; C099252:oxidized low density lipoprotein; D009195:Peroxidase
keywords: Cardiovascular disease; Insulin resistance; Obesity; Oxidative stress; Youth