title: Adipose tissue insulin resistance in peripubertal girls with first-degree family history of polycystic ovary syndrome.
abstract: OBJECTIVE
  To assess metabolic and endocrine defects in girls genetically predisposed to polycystic ovary syndrome (PCOS).
  
  
  METHODS
  Controlled cross-sectional study.
  
  
  METHODS
  University hospital.
  
  
  METHODS
  Nine girls, aged 8-14 years, having a first-degree relative diagnosed with PCOS (PCOSr) and 10 age-matched girls without a family history of PCOS.
  
  
  METHODS
  None.
  
  
  METHODS
  Insulin sensitivity (IS(FSIVGTT)) determined by frequently sampled IV glucose tolerance testing (GTT) and insulin-induced nonesterified fatty acid (NEFA) suppression, estimated by the log-linear slope of NEFA levels during the first 20 minutes of GTT.
  
  
  RESULTS
  In comparison to controls, PCOSr had higher body mass index (BMI) Z-score, waist circumference, and waist-to-height ratio. Levels of the androgen 17α-hydroxyprogesterone (17-OHP) were significantly increased in PCOSr, independent of adiposity, and inversely correlated with IS(FSIVGTT). The IS(FSIVGTT) was decreased and the NEFA suppression was less steep in PCOSr compared with controls, independent of BMI and 17-OHP. The NEFA suppression was more pronounced with increasing IS(FSIVGTT), independent of adiposity.
  
  
  CONCLUSIONS
  Girls at high risk of developing PCOS display increased adiposity and 17-OHP levels, but are mainly characterized by global insulin resistance and resistance to insulin-induced suppression of lipolysis that were independent of adiposity and 17-OHP levels. Therefore, genetic predisposition to PCOS may be related to early insulin resistance and adipocyte dysfunction.
authors.affiliation: Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
authors.forename: Andréanne
authors.initials: A
authors.lastname: Trottier
authors.forename: Marie-Claude
authors.initials: MC
authors.lastname: Battista
authors.forename: David H
authors.initials: DH
authors.lastname: Geller
authors.forename: Brigitte
authors.initials: B
authors.lastname: Moreau
authors.forename: André C
authors.initials: AC
authors.lastname: Carpentier
authors.forename: Judith
authors.initials: J
authors.lastname: Simoneau-Roy
authors.forename: Jean-Patrice
authors.initials: JP
authors.lastname: Baillargeon
mesh_terms: D000273:Adipose Tissue / Q000503:physiopathology*; D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007333:Insulin Resistance; D024821:Metabolic Syndrome / Q000503:physiopathology*; D011085:Polycystic Ovary Syndrome / Q000503:physiopathology*; D011627:Puberty