GLUT1 GENE POLYMORPHISM IN NON-INSULIN-DEPENDENT DIABETES-MELLITUS - GENETIC SUSCEPTIBILITY RELATIONSHIP WITH CARDIOVASCULAR RISK-FACTORS AND MICROANGIOPATHIC COMPLICATIONS IN A MEDITERRANEAN POPULATION
C. Gutierrez et al., GLUT1 GENE POLYMORPHISM IN NON-INSULIN-DEPENDENT DIABETES-MELLITUS - GENETIC SUSCEPTIBILITY RELATIONSHIP WITH CARDIOVASCULAR RISK-FACTORS AND MICROANGIOPATHIC COMPLICATIONS IN A MEDITERRANEAN POPULATION, Diabetes research and clinical practice, 41(2), 1998, pp. 113-120
Objective: It has been suggested that the polymorphic variation of GLU
T1 glucose transporter may contribute to genetic susceptibility to typ
e 2 diabetes in some populations. We have evaluated the GLUT1-XbaI pol
ymorphism in an association study of a Caucasian Mediterranean populat
ion and its role in the susceptibility to displaying either microangio
pathic complications or any of the risk factors associated with type 2
diabetes. Research design and methods: A total of 193 type 2 diabetic
patients (104 women and 89 men, 31-82 years of age, diabetes duration
13.2 +/- 6.2 years) and 90 healthy subjects (48 women and 42 men, 20-
72 years of age) were recruited for the association study. For the eva
luation of nephropathy and retinopathy, type 2 diabetic patients were
matched with those not having microangiopathic complications. Results:
Genotypic or allelic frequencies did not differ significantly between
controls and type 2 diabetic patients. Regarding the distribution of
clinical or metabolic parameters according to GLUT1 genotype, patients
with X1X1 genotype tended to have higher diastolic blood pressure lev
els compared with the remaining genotypes (P = 0.008). There were no d
ifferences in genotypic or allelic distribution among patients for eit
her the presence or absence of retinopathy or nephropathy. Conclusions
: We conclude that GLUT1 loci did not contribute significantly to type
2 diabetes in this cohort and is not a determinant for cardiovascular
risk factors or chronic microangiopathic complications associated wit
h type 2 diabetes. The weak association with diastolic hypertension mu
st be confirmed in other populations. (C) 1998 Elsevier Science Irelan
d Ltd. All rights reserved.