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Genome-wide and abdominal MRI data provide evidence that a genetically determined favorable adiposity phenotype is characterized by lower ectopic liver fat and lower risk of type 2 diabetes, heart disease, and hypertension.
Diabetes 68, 207-219 (2019)
Recent genetic studies have identified alleles associated with opposite effects on adiposity and risk of type 2 diabetes. We aimed to identify more of these variants and test the hypothesis that such favorable adiposity alleles are associated with higher subcutaneous fat and lower ectopic fat. We combined MRI data with genome-wide association studies of body fat percentage (%) and metabolic traits. We report 14 alleles, including 7 newly characterized alleles, associated with higher adiposity but a favorable metabolic profile. Consistent with previous studies, individuals carrying more favorable adiposity alleles had higher body fat % and higher BMI but lower risk of type 2 diabetes, heart disease, and hypertension. These individuals also had higher subcutaneous fat but lower liver fat and a lower visceral-to- subcutaneous adipose tissue ratio. Individual alleles associated with higher body fat % but lower liver fat and lower risk of type 2 diabetes included those in PPARG, GRB14, and IRS1, whereas the allele in ANKRD55 was paradoxically associated with higher visceral fat but lower risk of type 2 diabetes. Most identified favorable adiposity alleles are associated with higher subcutaneous and lower liver fat, a mechanism consistent with the beneficial effects of storing excess triglycerides in metabolically low-risk depots.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Beta-cell Function; Body-mass Index; Insulin-resistance; Normal-weight; Metabolically-obese; Glycemic Traits; Association; Loci; Identification; Metaanalysis
Language
Publication Year
2019
Prepublished in Year
2018
HGF-reported in Year
2018
ISSN (print) / ISBN
0012-1797
e-ISSN
1939-327X
Journal
Diabetes
Quellenangaben
Volume: 68,
Issue: 1,
Pages: 207-219
Publisher
American Diabetes Association
Publishing Place
Alexandria, VA.
Reviewing status
Peer reviewed
POF-Topic(s)
90000 - German Center for Diabetes Research
Research field(s)
Helmholtz Diabetes Center
PSP Element(s)
G-502400-001
G-502400-002
G-502400-002
WOS ID
WOS:000453906300020
Scopus ID
85058904141
PubMed ID
30352878
Erfassungsdatum
2018-12-31