Hyperhomocysteinemia, a risk factor for vascular disease, is related to vitamin B12, vitamin B6, and especially folate deficiency, or to genetic factors such as mutations in methylenetetrahydrofolate reductase (MTHFR), an enzyme involved in the remethylation pathway of homocysteine to methionine.
APOE epsilon4 is associated with dementias in the very old, whereas its relationship with either peripheral or central nervous system vascular disease without dementia is not as robust.
However, it is not known how much of the observed hyperhomocysteinemia in patients with vascular disease is due to heterozygosity for cystathionine-beta-synthase (CbetaS) deficiency, because a clinically useful screening method is unavailable.
However, it is not known how much of the observed hyperhomocysteinemia in patients with vascular disease is due to heterozygosity for cystathionine-beta-synthase (CbetaS) deficiency, because a clinically useful screening method is unavailable.
To investigate the metabolic and genetic associations of levels of soluble adhesion molecules, plasma levels of soluble E-selectin and vascular cell adhesion molecule-1 were measured in 60 non-insulin-dependent diabetes mellitus (NIDDM) patients, 60 first-degree relatives of NIDDM patients and 60 control subjects, none of whom displayed clinical features of vascular disease.
In view of recent reports of an increased risk for ischemic cerebral vascular disease in patients with the prothrombin 20210A mutation, we suggest that many of the reported cases of ischemic stroke and protein C deficiency may have had additional prothrombotic disorders such as the prothrombin mutation.
We propose that the overexpression of 5-LO and FLAP represents evidence for the participation of inflammation in the process of PPH vasculopathy or, alternatively, that the overabundance of the enzymes involved in generation of inflammatory mediators may themselves be related to vascular cell proliferation and cell growth.
To investigate the metabolic and genetic associations of levels of soluble adhesion molecules, plasma levels of soluble E-selectin and vascular cell adhesion molecule-1 were measured in 60 non-insulin-dependent diabetes mellitus (NIDDM) patients, 60 first-degree relatives of NIDDM patients and 60 control subjects, none of whom displayed clinical features of vascular disease.
We also examined whether vitamin cofactors and the C677T genetic mutation of the methylenetetrahydrofolate reductase (MTHFR) enzyme were major contributors to elevated plasma tHcy and carotid vascular disease.
Individuals with the thermolabile variant of methylenetetrahydrofolate reductase (MTHFR), due to homozygous C677T MTHFR gene mutation, have significantly raised plasma levels of homocysteine and may be at increased risk of vascular disease.
The presence of the deletion allele of the angiotensin-converting enzyme (ACE) I/D polymorphism is associated with an excess risk of vascular disease and diabetic nephropathy.
ENDOGLIN codes for a homodimeric membrane glycoprotein that interacts with receptors for members of the TGF-beta superfamily and is the gene mutated in the autosomal dominant vascular disorder hereditary hemorrhagic telangiectasia type 1 (HHT1).
Mutations in the coding region of the endoglin gene are responsible for hereditary haemorrhagic telangiectasia type 1 (HHT1), a dominantly inherited vascular disorder.
Since age-related brain atrophy and the extent of white matter hyperintensities (WMH) share similar risk factors, we examined the combined effect of ApoE4 and history of vascular disease on brain volume, WMH, and MRI evidence of stroke.
Future studies using mice in which RAGE expression has been genetically manipulated and with selective low molecular weight RAGE inhibitors will be required to definitively assign a critical role for RAGE activation in diabetic vasculopathy.
PPARgamma activation in human endothelial cells increases plasminogen activator inhibitor type-1 expression: PPARgamma as a potential mediator in vascular disease.
PPARgamma activation in human endothelial cells increases plasminogen activator inhibitor type-1 expression: PPARgamma as a potential mediator in vascular disease.
Thus, the methionine synthaseD919G mutation was found to be common in the Japanese general population, and it appears unlikely that this polymorphism has a major effect on homocysteine metabolism and/or the onset of vascular diseases.