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  • Title: Short-term effects of angiotensin receptor blockers on blood pressure control, and plasma inflammatory and fibrinolytic parameters in patients taking angiotensin-converting enzyme inhibitors.
    Author: Agirbasli M, Cincin A, Baykan OA.
    Journal: J Renin Angiotensin Aldosterone Syst; 2008 Mar; 9(1):22-6. PubMed ID: 18404606.
    Abstract:
    INTRODUCTION: Angiotensin-converting enzyme (ACE) inhibitors reduce cardiovascular events in patients with established vascular disease and heart failure (HF). ACE-inhibitors have important effects on fibrinolytic balance, which may be the underlying mechanism for a reduction in cardiovascular events. Although angiotensin-receptor blockers (ARBs) offer greater tolerability than ACE-inhibitors, the major ARB trials have demonstrated a lack of reduction in myocardial infarction (MI) occurrence and mortality in contrast to ACE-inhibitors. In this study, we investigated the combined effects of ARBs and ACE-inhibitors on fibrinolytic and inflammatory parameters in patients with uncontrolled hypertension. METHODS: Twenty-four patients with uncontrolled hypertension despite taking adequate doses of ACE-inhibitor therapy were selected. Patients were started on Candesartan 16 mg once a day. Plasma plasminogen activator inhibitor (PAI-1) antigen (Ag), tissue plasminogen activator (t-PA) Ag, thrombin-activatable fibrinolysis inhibitor (TAFI) % activity and high sensitivity C-reactive protein (hsCRP) levels, were measured during low salt intake at baseline and two weeks after therapy with an ARB. RESULTS: Addition of ARB to the regimen reduced systolic (155+/-17 vs. 139+/-13, p<0.001), and diastolic (91+/-9 vs. 81+/-8, p<0.001) blood pressures (BP). No significant changes were observed in PAI-1 Ag (66+/-51 vs. 68+/-52, p=0.9), t-PA Ag (12.6+/-5.3 vs. 13.3+/-4.7, p=0.3), TAFI % activity (119+/-30 vs. 118+/-32, p=0.9) and hsCRP (3.9+/-3.4 vs. 3.6+/-3.6, p=0.7) levels after adding an ARB. CONCLUSIONS: Combined ARB and ACE-inhibitor use provide better BP control without any detrimental effect in plasma inflammatory and fibrinolytic parameters.
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