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)
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 Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Treatment with irbesartan 300mg for 4 weeks. IF ABP\>135/85 mmHg add hydrochlorothiazide 12.5 mg.
Treatment with amlodipine 10 mg for 4 weeks. If ABP\>135/85 mmHg add hydrochlorothiazide 12.5 mg
Hypertension-24h ABPM Center Papageorgiou Hospital
Thessaloniki, Greece
Reduction of 24h BP and arterial stiffness in obese hypertensives
Time frame: 12
New onset of diabetes
Time frame: 12
Drug specific effect on reduction in central fat deposition and the leptin to adiponectin ratio
Time frame: 12
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.