Analysis of the contribution of FTO, NPC1, ENPP1, NEGR1, GNPDA2 and MC4R genes to obesity in Mexican children

Mejia-Benitez, Aurora, Kluender-Kluender, Miguel, Yengo, Loic, Meyre, David, Aradillas, Celia, Cruz, Esperanza, Perez-Luque, Elva, Manuel Malacara, Juan, Eugenia Garay, Maria, Peralta-Romero, Jesus, Flores-Huerta, Samuel, Garcia-Mena, Jaime, Froguel, Philippe, Cruz, Miguel and Bonnefond, Amelie (2013) Analysis of the contribution of FTO, NPC1, ENPP1, NEGR1, GNPDA2 and MC4R genes to obesity in Mexican children. Bmc Medical Genetics, 14 1: . doi:10.1186/1471-2350-14-21


Author Mejia-Benitez, Aurora
Kluender-Kluender, Miguel
Yengo, Loic
Meyre, David
Aradillas, Celia
Cruz, Esperanza
Perez-Luque, Elva
Manuel Malacara, Juan
Eugenia Garay, Maria
Peralta-Romero, Jesus
Flores-Huerta, Samuel
Garcia-Mena, Jaime
Froguel, Philippe
Cruz, Miguel
Bonnefond, Amelie
Title Analysis of the contribution of FTO, NPC1, ENPP1, NEGR1, GNPDA2 and MC4R genes to obesity in Mexican children
Formatted title
Analysis of the contribution of FTO, NPC1, ENPP1, NEGR1, GNPDA2 and MC4R genes to obesity in Mexican children
Journal name Bmc Medical Genetics   Check publisher's open access policy
ISSN 1471-2350
Publication date 2013-02-01
Year available 2013
Sub-type Article (original research)
DOI 10.1186/1471-2350-14-21
Open Access Status DOI
Volume 14
Issue 1
Total pages 6
Place of publication London, United Kingdom
Publisher BioMed Central
Language eng
Formatted abstract
Background: Recent genome wide association studies (GWAS) and previous positional linkage studies have identified more than 50 single nucleotide polymorphisms (SNPs) associated with obesity, mostly in Europeans. We aimed to assess the contribution of some of these SNPs to obesity risk and to the variation of related metabolic traits, in Mexican children.

Methods: The association of six European obesity-related SNPs in or near FTO, NPC1, ENPP1, NEGR1, GNPDA2 and MC4R genes with risk of obesity was tested in 1,463 school-aged Mexican children (Ncases = 514; Ncontrols = 949). We also assessed effects of these SNPs on the variation of body mass index (BMI), fasting serum insulin levels, fasting plasma glucose levels, total cholesterol and triglyceride levels, in a subset of 1,171 nonobese Mexican children.

Results: We found a significant effect of GNPDA2 rs10938397 on risk of obesity (odds ratio [OR] = 1.30; P = 1.34 × 10-3). Furthermore, we found nominal associations between obesity risk or BMI variation and the following SNPs: ENPP1 rs7754561, MC4R rs17782313 and NEGR1 rs2815752. Importantly, the at-risk alleles of both MC4R rs17782313 and NPC1 rs1805081 showed significant effect on increased fasting glucose levels (β = 0.36 mmol/L; P = 1.47 × 10-3) and decreased fasting serum insulin levels (β = -0.10 μU/mL; P = 1.21 × 10-3), respectively.

Conclusion: Our present results suggest that some obesity-associated SNPs previously reported in Europeans also associate with risk of obesity, or metabolic quantitative traits, in Mexican children. Importantly, we found new associations between MC4R and fasting glucose levels, and between NPC1 and fasting insulin levels.
Keyword Mexican children
Obesity
Single nucleotide polymorphism
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID SALUD-2005-C02-14412
FIS/IMSS/PRIO/10/011
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Institute for Molecular Bioscience - Publications
 
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