title: Pro12Ala polymorphism in human peroxisome proliferator activated receptor gamma is associated with hyperlipidaemia in obstructive sleep apnoea hypopnoea syndrome.
abstract: OBJECTIVE
  Peroxisome proliferator activated receptor gamma is a ligand-dependent transcription factor with an important role in insulin resistance and obesity. We investigated the associations between the Pro12Ala polymorphism of this receptor, obstructive sleep apnoea hypopnoea syndrome and hyperlipidaemia risk factors, in a Chinese cohort.
  
  
  METHODS
  We recruited 420 obstructive sleep apnoea hypopnoea syndrome patients and 190 healthy controls. Genetic analysis was conducted by restriction fragment length polymorphism. The hyperlipidaemia risk in both the study and control groups was analysed.
  
  
  RESULTS
  Comparison of genotype and allele frequencies revealed no significant differences between patients and controls (p > 0.05). In patients, there was no correlation between genotype and clinical parameters (p > 0.05), apart from a significant association between the Ala12 allele and hyperlipidaemia (odds ratio = 2.181; p = 0.017; 95 per cent confidence interval = 1.133-4.198).
  
  
  CONCLUSIONS
  In this Chinese cohort, the Pro12Ala polymorphism of peroxisome proliferator activated receptor gamma was not associated with obstructive sleep apnoea hypopnoea syndrome, but was associated with increased hyperlipidaemia risk.
authors.affiliation: Department of Otolaryngology, The Affiliated Sixth People's Hospital, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai, China.
authors.forename: J
authors.initials: J
authors.lastname: Guan
authors.forename: H
authors.initials: H
authors.lastname: Yi
authors.forename: X
authors.initials: X
authors.lastname: Wu
authors.forename: K
authors.initials: K
authors.lastname: Su
authors.forename: M
authors.initials: M
authors.lastname: Tao
authors.forename: S
authors.initials: S
authors.lastname: Yin
mesh_terms: D000328:Adult; D000409:Alanine / Q000235:genetics; D019943:Amino Acid Substitution; D015992:Body Mass Index; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D006949:Hyperlipidemias / Q000453:epidemiology / Q000235:genetics*; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D047495:PPAR gamma / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D011392:Proline / Q000235:genetics; D012720:Severity of Illness Index; D020181:Sleep Apnea, Obstructive / Q000453:epidemiology / Q000235:genetics*
chemical_list: D047495:PPAR gamma; D011392:Proline; D000409:Alanine