title: Serotonin receptor 2A -1438G/A promoter polymorphism in relation to obesity and response to sibutramine.
abstract: OBJECTIVE
  Serotonin has been related to appetite and body weight control. The aim of this study was to investigate a possible association of the -1438 /A promoter polymorphism of the serotonin 2A receptor (5HT2AR) gene with obesity-related variables and response to sibutramine.
  
  
  METHODS
  We examined the potential impact of this polymorphism on obesity and related metabolic traits in a cohort of 234 overweight/obese and 103 lean Greek subjects. Additionally, we examined whether the 5HT2AR 1438A/G polymorphism influences weight reduction and change in body composition among 106 out of these subjects, who were treated with 15 g sibutramine. Genotyping was carried out by polymerase chain reaction and restriction enzyme analysis.
  
  
  RESULTS
  Body mass index, fat mass, and waist circumference were not significantly different across the 5HT2AR 1438A/G genotype groups in overweight/obese women. Polymorphic G allele was associated with higher triglyceride and insulin levels but not with other biochemical and metabolic parameters. Distribution of genotypes and alleles was not different between responders and nonresponders (weight loss >5 or <5 g).
  
  
  CONCLUSIONS
  Based on these results, it seems unlikely that the 5HT2AR 1438 /A polymorphism has a major impact on obesity and related traits or the response to sibutramine in Greek overweight/obese subjects.
authors: Outpatient Clinic of Obesity, Diabetes, and Metabolism in Second Department of Internal Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece. dpapazog@med.duth.gr
authors: Dimitrios
authors: D
authors: Papazoglou
authors: Emmanouel
authors: E
authors: Restas
authors: Nikolaos
authors: N
authors: Papanas
authors: Konstantinos
authors: K
authors: Papatheodorou
authors: Christos
authors: C
authors: Babouris
authors: Dimitrios
authors: D
authors: Glaros
authors: Christos
authors: C
authors: Antonoglou
authors: Efstratios
authors: E
authors: Maltezos
mesh_terms: D000483:Alleles; D001067:Appetite Depressants / Q000627:therapeutic use*; D001823:Body Composition; D015992:Body Mass Index; D001835:Body Weight; D003503:Cyclobutanes / Q000627:therapeutic use*; D005260:Female; D005787:Gene Frequency; D006115:Greece; D006801:Humans; D008297:Male; D009765:Obesity / Q000235:genetics*; D050177:Overweight; D011110:Polymorphism, Genetic / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*; D044402:Receptor, Serotonin, 5-HT2A / Q000235:genetics*; D016896:Treatment Outcome; D015431:Weight Loss
chemical_list: D001067:Appetite Depressants; D003503:Cyclobutanes; D044402:Receptor, Serotonin, 5-HT2A; C058254:sibutramine