Abstract:
BACKGROUND:The adverse association between blood pressure and carotid artery intima-media thickness (IMT), a surrogate measure of subclinical atherosclerosis, is well-known. However, whether the G-6A polymorphism of the angiotensinogen (AGT) gene, a candidate gene of hypertension and vascular remodeling, modulates this relationship is unknown. METHODS:In 662 white and black subjects aged 25 to 43 years (73.4% white, 39.7% male), common carotid IMT was measured by B-mode ultrasonography. RESULTS:The variant A-6 allele frequency was higher in blacks than in whites (0.850 v 0.448, P < .0001). In a bivariate analysis, there were no differences in mean arterial blood pressure and common carotid IMT between carriers and noncarriers of the G allele in whites, blacks, or the total sample, after adjusting for gender, age, and race. In a multivariable regression analysis that included the status of the G allele (carriers versus noncarriers) along with gender, age, mean arterial blood pressure, body mass index, LDL cholesterol, triglycerides:HDL cholesterol ratio, homeostasis model assessment of insulin resistance, smoking, and race (in the total sample), mean arterial blood pressure was significantly and adversely associated with common carotid IMT in whites, blacks, and the total sample. This adverse positive relationship between mean arterial blood pressure and common carotid IMT was noted among noncarriers but not carriers of the G allele (comparison of slopes, P = .02) in the total sample. Although the interaction was not significant (P = .2 and P = .05 in whites and blacks, respectively), a trend similar to that in the total sample was found in both races. CONCLUSIONS:In a recessive manner, the genetic variant (G-6A) of the AGT gene modulates the association between blood pressure and carotid IMT in young adults.
journal_name
Am J Hypertensjournal_title
American journal of hypertensionauthors
Bhuiyan AR,Chen W,Srinivasan SR,Rice J,Mock N,Tang R,Bond MG,Boerwinkle E,Berenson GSdoi
10.1016/j.amjhyper.2007.06.001subject
Has Abstractpub_date
2007-10-01 00:00:00pages
1073-8issue
10eissn
0895-7061issn
1941-7225pii
S0895-7061(07)00320-2journal_volume
20pub_type
杂志文章abstract:BACKGROUND:Angiotensin-converting enzyme inhibitors are the drugs of choice in renal hypertension. The efficacy and safety of ramipril in adults has been proved; however, data on effectiveness of ramipril in children are few. The aim of the present study was to investigate the effect of ramipril on blood pressure (BP) ...
journal_title:American journal of hypertension
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journal_title:American journal of hypertension
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journal_title:American journal of hypertension
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journal_title:American journal of hypertension
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:American journal of hypertension
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journal_title:American journal of hypertension
pub_type: 杂志文章,多中心研究
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