Replication of the Association of BDNF and MC4R Variants With Dietary Intake in the Diabetes Prevention Program.

MedStar author(s):
Citation: Psychosomatic Medicine. 79(2):224-233, 2017 Feb/MarPMID: 27551991Institution: MedStar Health Research InstituteForm of publication: Journal ArticleMedline article type(s): Journal ArticleYear: 2017Local holdings: Available online from MWHC library: 1995 - presentMH - AdultMH - *Alpha-Ketoglutarate-Dependent Dioxygenase FTO/ge [Genetics]MH - Body Mass IndexMH - *Brain-Derived Neurotrophic Factor/ge [Genetics]MH - Diabetes Mellitus/pc [Prevention & Control]MH - *Energy Intake/ge [Genetics]MH - *European Continental Ancestry Group/ge [Genetics]MH - FemaleMH - Genetic LociMH - Genetic Predisposition to DiseaseMH - Genome-Wide Association StudyMH - HumansMH - MaleMH - Middle AgedMH - *Obesity/ge [Genetics]MH - *Receptor, Melanocortin, Type 4/ge [Genetics]ISSN:
  • 0033-3174
Name of journal: Psychosomatic medicineAbstract: CLINICAL TRIAL REGISTRATION: Clinicaltrials.gov,NCT00004992.CONCLUSIONS: These results demonstrate with the strength of independent replication that BDNF rs2030323 is associated with 100 to 150 greater total caloric intake per allele, with additional contributions of MC4R and, in non-Hispanic white individuals, FTO. As it has been argued that an additional 100 kcal/d could account for the trends in weight gain, prevention focusing on genetic profiles with high dietary intake may help to quell adverse obesity trends.METHODS: Data were obtained as part of the Diabetes Prevention Program (DPP), a clinical trial of diabetes prevention in persons at high risk of diabetes. The association of 31 genomewide association studies identified obesity risk alleles with dietary intake, measured through a food frequency questionnaire, was investigated in 3,180 participants from DPP at baseline.OBJECTIVE: Genomewide association studies (GWAS) have identified consistent associations with obesity, with a number of studies implicating eating behavior as a primary mechanism. Few studies have replicated genetic associations with dietary intake. This study evaluates the association between obesity susceptibility loci and dietary intake.RESULTS: The minor allele at BDNF, identified as protective against obesity, was associated with lower total caloric intake (beta = -106.06, SE = 33.13; p = .0014) at experimentwide statistical significance (p = .0016), whereas association of MC4R rs571312 with higher caloric intake reached nominal significance (beta = 61.32, SE = 26.24; p = .0194). Among non-Hispanic white participants, the association of BDNF rs2030323 with total caloric intake was stronger (beta = -151.99, SE = 30.09; p < .0001), and association of FTO rs1421085 with higher caloric intake (beta = 56.72, SE = 20.69; p = .0061) and percentage fat intake (beta = 0.37, SE = 0.08; p = .0418) was also observed.All authors: Aroda V, Barrett-Connor E, Dagogo-Jack S, Delahanty LM, Diabetes Prevention Program Research Group, Florez JC, Franks PW, Hamman RF, Horton ES, Jablonski KA, Kitabchi A, Knowler WC, Marrero D, McCaffery JM, Wing RR, Wylie-Rosett JFiscal year: FY2017Digital Object Identifier: Date added to catalog: 2017-05-06
Holdings
Item type Current library Collection Call number Status Date due Barcode
Journal Article MedStar Authors Catalog Article 27551991 Available 27551991

Available online from MWHC library: 1995 - presentMH - AdultMH - *Alpha-Ketoglutarate-Dependent Dioxygenase FTO/ge [Genetics]MH - Body Mass IndexMH - *Brain-Derived Neurotrophic Factor/ge [Genetics]MH - Diabetes Mellitus/pc [Prevention & Control]MH - *Energy Intake/ge [Genetics]MH - *European Continental Ancestry Group/ge [Genetics]MH - FemaleMH - Genetic LociMH - Genetic Predisposition to DiseaseMH - Genome-Wide Association StudyMH - HumansMH - MaleMH - Middle AgedMH - *Obesity/ge [Genetics]MH - *Receptor, Melanocortin, Type 4/ge [Genetics]

CLINICAL TRIAL REGISTRATION: Clinicaltrials.gov,NCT00004992.

CONCLUSIONS: These results demonstrate with the strength of independent replication that BDNF rs2030323 is associated with 100 to 150 greater total caloric intake per allele, with additional contributions of MC4R and, in non-Hispanic white individuals, FTO. As it has been argued that an additional 100 kcal/d could account for the trends in weight gain, prevention focusing on genetic profiles with high dietary intake may help to quell adverse obesity trends.

METHODS: Data were obtained as part of the Diabetes Prevention Program (DPP), a clinical trial of diabetes prevention in persons at high risk of diabetes. The association of 31 genomewide association studies identified obesity risk alleles with dietary intake, measured through a food frequency questionnaire, was investigated in 3,180 participants from DPP at baseline.

OBJECTIVE: Genomewide association studies (GWAS) have identified consistent associations with obesity, with a number of studies implicating eating behavior as a primary mechanism. Few studies have replicated genetic associations with dietary intake. This study evaluates the association between obesity susceptibility loci and dietary intake.

RESULTS: The minor allele at BDNF, identified as protective against obesity, was associated with lower total caloric intake (beta = -106.06, SE = 33.13; p = .0014) at experimentwide statistical significance (p = .0016), whereas association of MC4R rs571312 with higher caloric intake reached nominal significance (beta = 61.32, SE = 26.24; p = .0194). Among non-Hispanic white participants, the association of BDNF rs2030323 with total caloric intake was stronger (beta = -151.99, SE = 30.09; p < .0001), and association of FTO rs1421085 with higher caloric intake (beta = 56.72, SE = 20.69; p = .0061) and percentage fat intake (beta = 0.37, SE = 0.08; p = .0418) was also observed.

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