4.6 Article

Association study of polymorphisms in leptin and leptin receptor genes with antipsychotic-induced body weight gain

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pnpbp.2012.03.001

关键词

Antipsychotic; Gene; Leptin; Leptin receptor; Polymorphism; Weight gain

资金

  1. NARSAD Young Investigator Award [MOP 89853]
  2. Abbott Labs
  3. ACADIA
  4. Bristol Myers Squibb
  5. Eli Lilly
  6. Janssen
  7. Pfizer
  8. Astra Zeneca
  9. Glaxo Smith Kline
  10. Memory
  11. Cephalon
  12. Minster
  13. Aryx
  14. BiolineRx
  15. Allon
  16. GlaxoSmithKline
  17. Merck
  18. Intracellular Therapies
  19. Novartis
  20. Psychogenics
  21. F. Hoffmann-LaRoche LTD
  22. Sepracor
  23. Targacept

向作者/读者索取更多资源

Background: Antipsychotic-induced weight gain (AIWG) is a serious side-effect of antipsychotic medication leading to metabolic syndrome and increased cardiovascular morbidity. Unfortunately, there are still no valid predictors to assess an individual's risk to gain weight. Previous studies have indicated an impact of genetic variation in the genes encoding leptin, LEP, and leptin receptor, LEPR, on AIWG, but results have not been conclusive. Thus, we investigated polymorphisms in both genes for an association with AIWG. Methods: A total of 181 schizophrenic and schizoaffective patients treated with various antipsychotics were included. In a small subset of patients, leptin plasma levels were additionally obtained. Five polymorphisms in LEP and LEPR (LEP: rs7799039 (-2548G/A polymorphism), rs10954173, rs3828942; LEPR: rs1327120, rs1137101 (Q223R polymorphism) were genotyped using TaqMan assays. Statistical association with % weight change from baseline weight was performed using ANCOVA with baseline weight as covariate. Results: ANCOVA showed a non-significant trend for genotype association of the rs7799039 marker (p=.068). No significant association of the other LEP and LEPR SNPs with AIWG was detected. However, we found a significant association between a haplotype of LEP rs7799039G-rs10954173G-rs3828942G (p=.035) and AIWG. The rs7799039 G-allele (p=.042) and G-allele of rs3828942 (p=.032) were associated with higher weight gain. Conclusion: Our study supports the hypothesis of an impact of LEP gene variation on AIWG. Limitations of our study include heterogeneous samples, short treatment duration and multiple comparisons. Our findings were compared to previous studies in detail in order to provide the readers with a more conclusive picture. However, further studies are warranted including more gene variants and interaction analyses with other genes of the leptin-melanocortin pathway. (c) 2012 Published by Elsevier Inc.

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