Loading...
A genetic approach to examine the relationship between vitamin B12 status and metabolic traits in a South Asian population
Surendran, Shelini Alsulami, Sooad Lankeshwara, R. Jayawardena, Ranil Wetthasinghe, Kalum Sarkar, Swrajit Ellahi, Basma Lovegrove, Julie A. Anthony, Dimonge J. Vimaleswaran, Karani S.
Surendran, Shelini
Alsulami, Sooad
Lankeshwara, R.
Jayawardena, Ranil
Wetthasinghe, Kalum
Sarkar, Swrajit
Ellahi, Basma
Lovegrove, Julie A.
Anthony, Dimonge J.
Vimaleswaran, Karani S.
Citations
Altmetric:
Advisors
Editors
Other Contributors
EPub Date
Publication Date
2019-05-27
Submitted Date
Collections
Files
Loading...
Main article
Adobe PDF, 393.99 KB
Other Titles
Abstract
Background: Observational studies in South Asian populations have suggested an association between vitamin B12 status and metabolic traits; however, the findings have been inconclusive. Hence, the aim of the present study was to use a genetic approach to explore the relationship between metabolic traits and vitamin B12 status in a Sri Lankan population and to investigate whether these relationships were modified by dietary intake.
Methods: A total of 109 Sinhalese adults (61 men and 48 women aged 25-50 years), from Colombo city underwent anthropometric, biochemical, dietary intake analysis and genetic tests. Genetic risk scores (GRS) based on 10 metabolic single nucleotide polymorphisms (SNPs) (metabolic-GRS) and 10 vitamin B12 SNPs (B12-GRS) were constructed.
Results: The B12-GRS was significantly associated with serum vitamin B12 (P=0.008), but not with metabolic traits (P>0.05); whereas, the metabolic-GRS had no effect on metabolic traits (P>0.05) and vitamin B12 concentrations (P>0.05). An interaction was observed between B12-GRS and protein energy intake (%) on waist circumference (P=0.002). Interactions were also seen between the metabolic-GRS and carbohydrate energy intake (%) on waist to hip ratio (P=0.015).
Conclusion: Our findings suggest that a genetically lowered vitamin B12 concentration may have an impact on central obesity in the presence of a dietary influence; however, our study failed to provide evidence for an impact of metabolic-GRS on lowering B12 concentrations. Given that our study has a small sample size, further large studies are required to confirm our findings.
Citation
Surendran, S., Alsulami, S., Lankeshwara, R., Jayawardena, R., Wetthasinghe, K., Sarkar, S., ... & Vimaleswaran, K. S. (2019). A genetic approach to examine the relationship between vitamin B 12 status and metabolic traits in a South Asian population. International Journal of Diabetes in Developing Countries, 40, 21–31. https://doi.org/10.1007/s13410-019-00749-8
Publisher
Springer
Journal
International Journal of Diabetes in Developing Countries
Research Unit
PubMed ID
PubMed Central ID
Type
Article
Language
Description
Series/Report no.
ISSN
0973-3930
EISSN
1998-3832