The lactase persistence -13910C>T polymorphism shows indication of association with abdominal obesity among Portuguese children
Article first published online: 9 JAN 2013
©2012 The Author(s)/Acta Pædiatrica ©2012 Foundation Acta Pædiatrica
Volume 102, Issue 4, pages e153–e157, April 2013
How to Cite
Albuquerque, D., Nóbrega, C. and Manco, L. (2013), The lactase persistence -13910C>T polymorphism shows indication of association with abdominal obesity among Portuguese children. Acta Paediatrica, 102: e153–e157. doi: 10.1111/apa.12134
- Issue published online: 18 MAR 2013
- Article first published online: 9 JAN 2013
- Accepted manuscript online: 17 DEC 2012 06:38AM EST
- Manuscript Accepted: 12 DEC 2012
- Manuscript Revised: 14 NOV 2012
- Manuscript Received: 3 SEP 2012
- Fundação para a Ciência e Tecnologia. Grant Numbers: PEst-OE/SADG/UI0283/2011, SFRH/BD/68774/2010
- Abdominal Obesity;
- BMI ;
- LCT -13910C>T polymorphism;
- Portuguese children;
- Waist circumference
The -13910C>T single nucleotide polymorphism located upstream of the lactase gene (LCT) was found tightly associated with lactase persistence in European populations. Recently, it was also associated with body mass index (BMI) and obesity in European adults. The aim of this study was to test the association of -13910C>T polymorphism with obesity-related traits and risk of obesity in children.
We genotyped 580 Portuguese children (6–12-year-olds) for the -13910C>T polymorphism using TaqMan probes by real-time PCR. Anthropometric measurements were assessed in all children. Obesity was defined according to the International Obesity Task Force (IOTF) cut-offs and abdominal obesity using the sex and age-specific ≥90th waist circumference percentile.
We found indication for an association between the-13910*T allele and children abdominal obesity (odds ratio [OR] = 1.41; 95% confidence intervals [CI]: 1.03–1.94; p = 0.030). Under the dominant model, the indicative association was observed between the LCT-13910 CT/TT genotypes and abdominal obesity, remaining significant after adjustment for age and gender (OR = 1.65; 95% CI: 1.04–2.60; p = 0.029). No association was detected with the risk of obesity (p = 0.350).
Our results suggest that the -13910C>T polymorphism may predispose to abdominal obesity in Portuguese children. The association with BMI or risk of obesity, previously observed in adults, was not confirmed.