Genetic study of the CD36 gene in a French diabetic population.
OBJECTIVE
CD36 is a multifunctional membrane receptor widely expressed in different tissues which binds and internalizes oxidized low-density lipoprotein. In rodents, CD36 gene variations modulate glucose homeostasis and contribute to metabolic syndrome associated with type 2 diabetes but the effects in human are unknown.


METHODS
We screened the entire coding sequence of the CD36 gene in 272 individuals and we genotyped both rare and frequent variants in 454 T2D subjects and 221 controls.


RESULTS
We detected five mutations, P191P and N247S were only found each in one family and did not segregate with diabetes, the three others (A/C-178 in the promoter, A/G-10 in intron 3 and (GGGTTGAGA) insertion in intron 13) being equally frequent in diabetic subjects and in controls. However, adiponectin levels, a marker for insulin sensitivity, were significantly associated with the -178 A/C promoter variant allele (p=0.003, p corrected for multiple testing=0.036), possibly reflecting association with insulin-resistance in the French population.


CONCLUSIONS
Thus, the -178 A/C SNP promoter mutation in the CD36 gene represents a putative genetic marker for insulin-resistance in the French population, although it does not appear to contribute to the genetic risk for T2D.
Leprêtre
F
F
Institute of Biology-CNRS 8090, Pasteur Institute of Lille, France.
Linton
K J
KJ
Lacquemant
C
C
Vatin
V
V
Samson
C
C
Dina
C
C
Chikri
M
M
Ali
S
S
Scherer
P
P
Séron
K
K
Vasseur
F
F
Aitman
T
T
Froguel
P
P
D052242:Adiponectin; D001483:Base Sequence; D018955:CD36 Antigens / Q000235:genetics*; D003920:Diabetes Mellitus / Q000235:genetics* / Q000276:immunology; D005091:Exons / Q000235:genetics; D005602:France; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007333:Insulin Resistance / Q000235:genetics; D036341:Intercellular Signaling Peptides and Proteins / Q000097:blood; D007438:Introns / Q000235:genetics; D009154:Mutation; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D011401:Promoter Regions, Genetic; D012016:Reference Values
D052242:Adiponectin; D018955:CD36 Antigens; D036341:Intercellular Signaling Peptides and Proteins