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Inicio Medicina Clínica (English Edition) The rs4285184 polymorphism of the MGAT1 gene as a risk factor for obesity in the...
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Vol. 148. Issue 4.
Pages 149-152 (February 2017)
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Vol. 148. Issue 4.
Pages 149-152 (February 2017)
Original article
DOI: 10.1016/j.medcle.2017.02.011
The rs4285184 polymorphism of the MGAT1 gene as a risk factor for obesity in the Mexican population
Polimorfismo rs4285184 del gen MGAT1 como factor de riesgo de obesidad en la población mexicana
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José C. Tapia-Riveraa,b, Luz M. Baltazar-Rodríguezc, Martha I. Cárdenas-Rojasa,d, Alan Álvarezc, Rafael Bustos-Saldañab, Iván Delgado-Encisoc, Laura L. Valdez-Velázqueze, José Guzmán-Esquivelb,
Corresponding author
pepeguzman_esquivel@outlook.com

Corresponding author.
, Mario Ramírez-Floresa
a University Biomedical Research Center, Universidad de Colima, Colima, Mexico
b Centro Universitario del Sur, Universidad de Guadalajara, Guzmán, Jalisco, Mexico
c Faculty of Medicine, Universidad de Colima, Colima, Mexico
d Clinical Epidemiology Research Unit, Hospital General de Zona, UMF N.o 1 IMSS, Colima, Mexico
e Faculty of Chemical Sciences, Universidad de Colima, Colima, Mexico
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Tables (2)
Table 1. Main clinical characteristics of the study population.
Table 2. Allelic and genotypic frequency in patients with obesity and controls.
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Abstract
Background and objective

Obesity is a factor that contributes to the morbidity of certain diseases and to worldwide mortality. MGAT1 is a glycosyltransferase involved in the synthesis of protein-bound and lipid-bound oligosaccharides and its polymorphisms are possibly involved in the etiology of obesity. We investigated the association of the rs4285184 polymorphism of the MGAT1 gene with obesity in adults in the State of Colima, Mexico.

Methods

A case–control study was conducted that included 244 subjects. All of them were grouped according to their percentage of body fat, determined through bioelectrical impedance, and they were genotyped for the rs4285184 polymorphism of the MGAT1 gene through PCR-RFLP. The results were analyzed for their association with the percentage of body fat.

Results

The G allele had a frequency of 49.19 and 38.75% for the cases and controls, respectively (P=.020) (OR 1.53; 95% CI 1.068–2.193). The frequency of the A/G+G/G genotype was 75% in the obese patients, which was significantly higher compared with the 57.5% of the control group (P=.004) (OR 2.217; 95% CI 1.287–3.821).

Conclusions

The presence of the rs4285184 polymorphism of the MGAT1 gene increased the risk for developing body fat associated with obesity in the Mexican population.

Keywords:
Obesity
Gene
Polymorphism
Association
Resumen
Antecedentes y objetivo

La obesidad es un factor que contribuye a la morbilidad de ciertas enfermedades, y a la mortalidad mundial. MGAT1 es una glucosiltransferasa implicada en la síntesis de los oligosacáridos ligados a proteínas y lípidos, y es posible que sus polimorfismos estén implicados en la etiología de la obesidad. Investigamos la asociación entre el polimorfismo rs4285184 del gen MGAT1 y la obesidad en adultos del estado de Colima, México.

Métodos

Se realizó un estudio caso-control que incluyó a 244 sujetos. Todos ellos fueron agrupados con arreglo a su porcentaje de grasa corporal, determinado mediante impedancia bioeléctrica, y fueron genotipados para el polimorfismo rs4285184 del gen MGAT1 mediante PCR-RFLP. Se analizaron los resultados para buscar su asociación con el porcentaje de grasa corporal.

Resultados

El alelo G reflejó una frecuencia del 49,19% y el 38,75% para los casos y controles, respectivamente (p= 0,020) (OR 1,53; IC 95% 1,068-2,193). La frecuencia del genotipo A/G+G/G fue del 75% en los pacientes obesos, cifra significativamente superior en comparación al 57,5% del grupo control (p=0,004) (OR 2.217; IC 95% 1,287-3,821).

Conclusiones

La presencia del polimorfismo rs4285184 del gen MGAT1 incrementó el riesgo de desarrollar grasa corporal asociada a la obesidad en la población mexicana.

Palabras clave:
Obesidad
Gen
Polimorfismo
Asociación

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