Molecular Biology Reports

, Volume 41, Issue 3, pp 1731–1740 | Cite as

Association between type 2 diabetes mellitus-related SNP variants and obesity traits in a Saudi population

  • Nasser M. Al-Daghri
  • Khalid M. Alkharfy
  • Omar S. Al-Attas
  • Soundararajan Krishnaswamy
  • Abdul Khader Mohammed
  • Omar M. Albagha
  • Amal M. Alenad
  • George P. Chrousos
  • Majed S. Alokail
Article

Abstract

Obesity, commonly measured as body mass index (BMI), has been on a rapid rise around the world and is an underlying cause of several chronic non-communicable diseases, including type 2 diabetes mellitus (T2DM). In addition to the environmental factors, genetic factors may also contribute to the ongoing obesity epidemic in Saudi Arabia. This study investigated the association between variants of 36 previously established T2DM SNPs and obesity phenotypes in a population of Saudi subjects. Study subjects consisted of 975 obese (BMI: ≥30), 825 overweight (25–30) and 423 lean controls (18–25) and of these 927 had a history of T2DM. Subjects were genotyped for 36 SNPs, which have been previously proved to be T2DM linked, using the KASPar method and the means of BMI and waist circumference (WC) corresponding to each of the genotypes were compared by additive, recessive and dominant genetic models. Five and seven of 36 T2DM-related SNPs were significantly associated with the BMI and WC, respectively. Variants of SNPs rs7903146, rs1552224 and rs11642841 in the control group and rs7903146 in T2DM group showed significant association with both BMI and WC. Variant of SNP rs10440833 was significantly associated with BMI in T2DM group of both males [OR = 1.8 (1.0, 3.3); P = 0.04] and females [OR = 2.0 (1.0, 3.9); P = 0.04]. Genetic risk scores explained 19 and 14 % of WC and hip size variance in this population. Variants of a number of established T2DM related SNPs were associated with obesity phenotypes and may be significant hereditary factors in the pathogenesis of T2DM.

Keywords

Obesity SNP Type 2 diabetes BMI Waist circumference FTO GWA studies 

Supplementary material

11033_2014_3022_MOESM1_ESM.doc (55 kb)
Supplementary material 1 (DOC 55 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Nasser M. Al-Daghri
    • 1
    • 2
  • Khalid M. Alkharfy
    • 1
    • 3
  • Omar S. Al-Attas
    • 4
  • Soundararajan Krishnaswamy
    • 1
  • Abdul Khader Mohammed
    • 1
  • Omar M. Albagha
    • 5
  • Amal M. Alenad
    • 6
  • George P. Chrousos
    • 7
  • Majed S. Alokail
    • 1
    • 2
  1. 1.Biomarkers Research Program, Biochemistry Department, College of ScienceKing Saud UniversityRiyadhKingdom of Saudi Arabia
  2. 2.Prince Mutaib Chair for Biomarkers of Osteoporosis, Biochemistry DepartmentCollege of Science, King Saud UniversityRiyadhKingdom of Saudi Arabia
  3. 3.Department of Clinical Pharmacy, College of PharmacyKing Saud UniversityRiyadhKingdom of Saudi Arabia
  4. 4.Center of Excellence in Biotechnology ResearchKing Saud UniversityRiyadhKingdom of Saudi Arabia
  5. 5.Molecular Medicine CentreUniversity of EdinburghEdinburghUK
  6. 6.School of Biological SciencesUniversity of SouthamptonSouthamptonUK
  7. 7.First Department of PediatricsAthens University Medical SchoolAthensGreece

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