Coronary Atherosclerosis
Conditions
Keywords
Olmesartan medoxomil, Epicardial adipose tissue, Multidetector Computed Tomography
Brief summary
The purpose of this study is to determine whether olmesartan medoxomil is effective in the treatment of coronary atherosclerosis progression and epicardial adipose tissue(EAT) volume reduction in patients with coronary atherosclerosis detected by coronary CT angiography(CCTA).
Detailed description
Epicardial adipose tissue(EAT) is directly deposited around the pericardium and coronary artery. By means of paracrine action, it can generate various kinds of cytokines, inflammatory factor and free fatty acids, that can affect the state of coronary endothelial function, inflammation and oxidative stress, which finally aggravate the progression of coronary atherosclerosis. In recent years, clinical studies have shown that EAT is a newly discovered independent risk factor of coronary atherosclerosis.Studies confirm that olmesartan medoxomil can improve endothelial function, resisting thrombosis, improve tissue reconstruction, resisting oxidative stress so as to achieve atherosclerosis resistant. Latest researches show that olmesartan medoxomil can better inhibit rat epididymal adipose cell hypertrophy and inflammatory reaction. Coronary CT angiography(CCTA) has emerged as a noninvasive imaging method for analysis coronary atherosclerosis. The purpose of this study is to determine whether olmesartan medoxomil is effective in the treatment of coronary atherosclerosis progression and EAT volume reduction in patients with coronary atherosclerosis detected by CCTA.
Interventions
Dosage must be individualized. The usual recommended starting dose of Benicar is 20mg once daily when used as monotherapy in patients who are not volume-contracted.For patients requiring further reduction in blood pressure after 2 weeks of therapy, the dose of Benicar may be increased to 40 mg. Doses above 40 mg do not appear to have greater effect. Twice-daily dosing offers no advantage over the same total dose given once daily.
DRUGAntihypertensive medication (per doctor suggestion)
Any antihypertensive medication alone or in combination.Calcium channel blockers (CCBs),diuretics, beta-blockers, or other antihypertensive medication except ACE inhibitors or ARBs.The drug dose must be individualed.Dosage must be individualized.The patients should take the antihypertensive drugs according to doctors'suggestion.
Sponsors
Chinese PLA General Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No
Inclusion criteria
* coronary artery stenosis between 30% and 70% determined by CCTA in essential hypertension patients * resting diastolic blood pressure (DBP) between 90 and 110 mmHg * type A and B for coronary artery vascular lesions
Exclusion criteria
* secondary hypertension * coronary artery stenosis less than 30% or greater than 70% determined by CCTA * contraindications to treatment with olmesartan medoxomil (allergy, glaucoma, digestive ulcer, is currently taking phosphodiesterase-5 inhibitor) * resting systolic blood pressure (SBP) \> 200 mmHg or resting diastolic blood pressure (DBP) \> 110 mmHg * Severe calcification, distortion or type C for coronary artery vascular lesions * pregnancy * unwillingness or inability to provide informed consent
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Coronary atherosclerosis progression detected by CCTA | 12 month | Coronary atherosclerosis progression is defined as ≥10% diameter reduction or progression of a pre-existing coronary stenosis; or ≥0.2mm reduction or progression of the minimal luminal area (MLD) in the lesion |
| Epicardial Adipose Tissue(EAT) volume detected by CCTA | 12 month | — |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The relationship between coronary atherosclerosis and EAT, as indicated by coronary atherosclerosis progression and epicardial adipose tissue(EAT) volume changes | 12 month | — |
| Serum levels of blood lipids | 12 month | Blood lipids include total cholesterol,triglyceride,high density lipoprotein(HDL) and low density lipoprotein(LDL). |
| Individual circulating surrogate markers of endothelial function including NO and ET-1 | 12 month | ET: Endothelin |
| Circulating surrogate markers of atherosclerosis inflammation including hs-CRP,IL-6,MCP-1,TNF--α and MMP-9 | 12 month | CRP: C reactive protein; IL: Interleukin; MCP: Monocyte chemotactic protein,composite of chemoattractant markers; TNF-α: tumor necrosis factor; MMP: Matrix metalloproteinase. |
| Serum levels of blood glucose | 12 month | Blood glucose is defined as fasting blood glucose(FBG). |
| Individual circulating surrogate markers of adipose tissue inflammation and metabolism including adiponectin and leptin. | 12 month | — |
Countries
China
Contacts
Primary ContactZhou Ying
Outcome results
None listed