Insulin-gene flanking sequences, diabetes mellitus and atherosclerosis: a review.
A highly polymorphic locus flanking the human insulin gene contains two major size classes of DNA restriction fragments, which segregate in families as stable genetic elements. The L-allele, i.e. fragments with an average size of about 600 base-pairs seems to be a weak genetic marker for Type 1 (insulin-dependent) diabetes mellitus, whereas the U-allele, i.e. fragments of an average size of about 2500 base-pairs hitherto has been associated with Type 2 (non-insulin-dependent) diabetes mellitus and diabetic hypertriglyceridaemia. The most recent reports on this subject do not confirm an association between the U-allele and Type 2 diabetes. Our own studies indicate that the U-allele is a fairly strong marker for the development of atherosclerosis (relative risk for U-carriers 3.36). The putative functions of the polymorphic region in atherogenesis and the relation of this region to other genetic markers for atherosclerosis are not known.
D000483:Alleles; D001161:Arteriosclerosis / Q000209:etiology*; D001483:Base Sequence; D004262:DNA Restriction Enzymes; D048909:Diabetes Complications; D003920:Diabetes Mellitus / Q000235:genetics*; D003922:Diabetes Mellitus, Type 1 / Q000235:genetics; D003924:Diabetes Mellitus, Type 2 / Q000235:genetics; D005838:Genotype; D006801:Humans; D006953:Hyperlipoproteinemia Type IV / Q000235:genetics; D007328:Insulin / Q000235:genetics*
D007328:Insulin; D004262:DNA Restriction Enzymes