Common Polymorphisms in the Adiponectin Gene ACDC Are Not Associated With Diabetes in Pima Indians
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Common Polymorphisms in the Adiponectin Gene ACDC Are Not Associated With Diabetes in Pima Indians. / de Courten, Barbora; Hanson, Robert L; Funahashi, Tohru; Lindsay, Robert S; Matsuzawa, Yuji; Tanaka, Sachiyo; Thameem, Farook; Gruber, Jonathan D; Froguel, Philippe; Wolford, Johanna K.
I: Diabetes, Bind 54, Nr. 1, 01.01.2005, s. 284-9.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Common Polymorphisms in the Adiponectin Gene ACDC Are Not Associated With Diabetes in Pima Indians
AU - de Courten, Barbora
AU - Hanson, Robert L
AU - Funahashi, Tohru
AU - Lindsay, Robert S
AU - Matsuzawa, Yuji
AU - Tanaka, Sachiyo
AU - Thameem, Farook
AU - Gruber, Jonathan D
AU - Froguel, Philippe
AU - Wolford, Johanna K
PY - 2005/1/1
Y1 - 2005/1/1
N2 - Adiponectin is an abundant adipose tissue-derived protein with important metabolic effects. Plasma adiponectin levels are decreased in obese individuals, and low adiponectin levels predict insulin resistance and type 2 diabetes. Two variants in the adiponectin gene ACDC have been previously associated with plasma adiponectin levels, obesity, insulin resistance, and type 2 diabetes. To determine the role of genetic variation in ACDC in susceptibility to obesity and type 2 diabetes in Pima Indians, we screened the promoter, exons, and exon-intron boundaries of the gene to identify allelic variants. We identified 17 informative polymorphisms that comprised four common (minor allele frequency >15%) linkage disequilibrium clusters consisting of 1-4 variants each. We genotyped one representative polymorphism from each cluster in 1,338 individuals and assessed genotypic association with type 2 diabetes, BMI, serum lipid levels, serum adiponectin levels, and measures of insulin sensitivity and secretion. None of the ACDC variants were associated with type 2 diabetes, BMI, or measures of insulin sensitivity or secretion. One variant, single nucleotide polymorphism (SNP)-12823, was associated with serum adiponectin levels (P = 0.002), but this association explained only 2% of the variance of serum adiponectin levels. Our findings suggest that these common ACDC polymorphisms do not play a major role in susceptibility to obesity or type 2 diabetes in this population.
AB - Adiponectin is an abundant adipose tissue-derived protein with important metabolic effects. Plasma adiponectin levels are decreased in obese individuals, and low adiponectin levels predict insulin resistance and type 2 diabetes. Two variants in the adiponectin gene ACDC have been previously associated with plasma adiponectin levels, obesity, insulin resistance, and type 2 diabetes. To determine the role of genetic variation in ACDC in susceptibility to obesity and type 2 diabetes in Pima Indians, we screened the promoter, exons, and exon-intron boundaries of the gene to identify allelic variants. We identified 17 informative polymorphisms that comprised four common (minor allele frequency >15%) linkage disequilibrium clusters consisting of 1-4 variants each. We genotyped one representative polymorphism from each cluster in 1,338 individuals and assessed genotypic association with type 2 diabetes, BMI, serum lipid levels, serum adiponectin levels, and measures of insulin sensitivity and secretion. None of the ACDC variants were associated with type 2 diabetes, BMI, or measures of insulin sensitivity or secretion. One variant, single nucleotide polymorphism (SNP)-12823, was associated with serum adiponectin levels (P = 0.002), but this association explained only 2% of the variance of serum adiponectin levels. Our findings suggest that these common ACDC polymorphisms do not play a major role in susceptibility to obesity or type 2 diabetes in this population.
KW - Adiponectin
KW - Arizona
KW - Body Mass Index
KW - Diabetes Mellitus, Type 2
KW - Genotype
KW - Humans
KW - Indians, North American
KW - Intercellular Signaling Peptides and Proteins
KW - Linkage Disequilibrium
KW - Lipids
KW - Longitudinal Studies
KW - Obesity
KW - Pedigree
KW - Polymorphism, Genetic
KW - Polymorphism, Single Nucleotide
KW - Prevalence
M3 - Journal article
C2 - 15616040
VL - 54
SP - 284
EP - 289
JO - Diabetes
JF - Diabetes
SN - 0012-1797
IS - 1
ER -
ID: 33926324