Gradual reactivation over time of vascular tissue angiotensin I to angiotensin II conversion during chronic lisinopril therapy in chronic heart failure
Colin A. J. Farquharson, MBChB, MRCP(UK)a and
Allan D. Struthers, MD, FRCP*,a
a University Department of Clinical Pharmacology and Therapeutics, Ninewells Hospital and Medical School, Dundee, United Kingdom

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Figure 1 Forearm blood flow (FBF) responses to angiotensin I and II with regard to New York Heart Association class: I (triangle), II (square) and III (circle). *p < 0.05.
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Figure 2 Forearm blood flow (FBF) responses to angiotensin I and angiotensin II at baseline (square), after nine months (triangle) and after 18 months (circle). **p < 0.001.
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Figure 3 Forearm blood flow (FBF) responses to angiotensin I and angiotensin II with differing dosages of angiotensin-converting enzyme inhibitors: lisinopril 10 mg/day (square), lisinopril 5 mg/day (triangle) and lisinopril 20 mg/day (circle). **p < 0.001.
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Figure 4 Differences in plasma angiotensin II, angiotensin II/I ratios, angiotensin-converting enzyme (ACE) and aldosterone levels according to New York Heart Association class. *p < 0.05.
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Figure 5 Changes in plasma levels of angiotensins, aldosterone and angiotensin-converting enzyme (ACE) levels longitudinally with time.
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Figure 6 Plasma angiotensins, aldosterone and angiotensin-converting enzyme with changing doses of angiotensin-converting enzyme (ACE) inhibitor.
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Figure 7 Comparison of angiotensin I- FBF30% (forearm blood flow) in each subgroup defined in the three studies in patients with chronic heart failure.
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