The interaction between Alternative Healthy Eating Index and MC4R rs17782313 gene variants on central and general obesity indices in women: A cross‐sectional study

May 26, 2022Journal of human nutrition and dietetics : the official journal of the British Dietetic Association

How Healthy Eating and a Specific Gene Variant Together Relate to Body Fat in Women

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Abstract

The interaction between the C allele of MC4R rs17782313 and the Alternative Healthy Eating Index is associated with decreased obesity indices in overweight women.

A significant interaction was found between MC4R rs17782313 and the AHEI and its association with hip circumference, BMI, fat mass, and visceral fat area.
Adjusted analyses showed a decrease in hip circumference (β = -0.41), BMI (β = -0.15), fat mass (kg) (β = -0.28), and visceral fat area (β = -5.68) associated with this interaction.
Other obesity-related measures showed suggestive associations with this interaction, including waist circumference and trunk fat.

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BACKGROUND: Previous studies have shown that the C allele of melanocortin 4 receptor (MC4R) rs17782313 and the Alternative Healthy Eating Index (AHEI) are separately associated with obesity. However, the present study aimed to investigate the interaction between MC4R rs17782313 variants and the AHEI and their association with central and general obesity indices, which has not been assessed previously.

METHODS: In total, 291 women with body mass index (BMI) ≥ 25 kg mand aged 18-48 years enrolled in this cross-sectional study. All participants were assessed for body composition, anthropometric measures, dietary intake, and blood parameters. After obtaining data of dietary intake from the 147-item food frequency questionnaire, the AHEI was calculated. MC4R rs17782313 single-nucleotide polymorphisms were assessed using the polymerase chain reaction-restriction length polymorphism method. -2

RESULTS: After adjustment for age, energy intake, physical activity, marital status, and economic status, the interaction between MC4R rs17782313 and the AHEI was associated with hip circumference [β = -0.41, 95% confidence interval (CI) = -0.77 to -0.05, p = 0.02], BMI (β = -0.15, 95% CI = -0.29 to -0.02, p = 0.02), fat mass (kg) (β = -0.28, 95% CI = -0.56 to -0.01, p = 0.03), visceral fat area (β = -5.68, 95% CI = -9.55 to -1.80, p = 0.004). The other measures that appear to be suggestively related to this interaction (0.05 < p < 0.07) are waist circumference, waist-to-height ratio, trunk fat (%), trunk fat (kg), fat mass (%) and fat mass index.

CONCLUSIONS: The interaction between MC4R rs17782313 and the AHEI can be related to central and general obesity indices in overweight/obese women.

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The interaction between Alternative Healthy Eating Index and MC4R rs17782313 gene variants on central and general obesity indices in women: A cross‐sectional study

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