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Irbesartan Versus Amlodipine: The OBI Study

2014-08-27 03:18:57 | BioPortfolio

Summary

Objective:

1. To study the effectiveness of irbesartan 300mg and amlodipine 10 mg in 24h ambulatory blood pressure values in obese subjects

2. To study the drug specific effect in arterial stiffness

3. To study possible drug mechanisms in obesity (reduction of central adiposity and changing the ratio of leptin to adiponectin)

Description

Study Objectives

1. Primary:

- Reduction of 24h BP in obese hypertensives

- Reduction in arterial stiffness

2. Secondary

- Drug specific effect on new onset of diabetes

- Drug specific effect on reduction in central fat deposition and the leptin to adiponectin ratio

Study design

Study drugs: Irbesartan 300mg vs. amlodipine 10mg

Tx duration and follow-up: 12 months

Collected data:

- 24h SBP and DBP in time 0, 1, 12.

- Pulse wave velocity in time 0,1,12.

- Central obesity (total, visceral, abdominal fat) in time 0,1,12.

- Leptin/adiponectin in time 0,1,12.

- BMI, waist/hip ratio in time 0,1, 12.

- Glu, HbA1c, insulin in time 0, 1,12.

- K, Na, Cr, BUN, Chol, Tg, HDL, LDL,ALT, AST in time 0, 1,12. Number of patients: The reduction in mean SBP expected to be 15 mmHg. Previous studies from our group reported an 14mmHg SD for mean SBP. The sample size required at the two sided 5% significance level and 80% power is 40 patients (Lehr's formula)

Number of centers: 1

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Conditions

Obesity

Intervention

Irbesartan, Amlodipine

Location

Hypertension-24h ABPM Center Papageorgiou Hospital
Thessaloniki
Greece

Status

Not yet recruiting

Source

Aristotle University Of Thessaloniki

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:18:57-0400

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The condition of weighing two, three, or more times the ideal weight, so called because it is associated with many serious and life-threatening disorders. In the BODY MASS INDEX, morbid obesity is defined as having a BMI greater than 40.0 kg/m2.

A sub-PHENOTYPE of obese individuals who have a risk for CARDIOVASCULAR DISEASES between that of healthy individuals with normal weight and unhealthy individuals with obesity.

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