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Aliskiren, the future of renin-angiotensin system blockade?
Y Uresin1, M Mehtar Bozkurt, S Sabirli
1Istanbul University, Faculty of Medicine, Department of Pharmacology, 34390 Capa Istanbul, Turkey. yagiz@istanbul.edu.tr
Insights
Aliskiren, a novel direct renin inhibitor, effectively treats hypertension by blocking renin activity. This new drug offers improved pharmacokinetics and potential end-organ protection in hypertensive patients.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Hypertension Research
Background:
- Renin-angiotensin system (RAS) inhibitors like ACE inhibitors and ARBs are standard hypertension treatments.
- Blocking the angiotensin I receptor can lead to increased plasma renin activity due to loss of negative feedback.
- Previous direct renin inhibitors faced challenges with potency, bioavailability, and half-life.
Purpose of the Study:
- To evaluate the efficacy and pharmacokinetic profile of Aliskiren, a novel direct renin inhibitor.
- To assess Aliskiren's potential for end-organ protection in hypertensive patients.
Main Methods:
- Administration of Aliskiren, a novel direct renin inhibitor, in a once-daily oral dosage.
- Measurement of plasma renin activity to assess renin inhibition.
- Evaluation of pharmacokinetic properties and end-organ protection markers.
Main Results:
- Aliskiren demonstrated efficacy in hypertensive patients with once-daily oral dosing.
- The drug exhibited favorable pharmacokinetic properties.
- Aliskiren showed potential for improving end-organ protection.
Conclusions:
- Aliskiren represents a promising new therapeutic option for hypertension management.
- Its direct inhibition of renin offers a distinct mechanism compared to existing RAS blockers.
- Favorable pharmacokinetics and potential end-organ benefits warrant further investigation.
Abstract:
The suppression of the renin-angiotensin system by angiotensin-converting enzyme inhibitors and angiotensin receptor blockers has been proven in many studies to treat hypertension and reduce cardiovascular events; however, reducing angiotensin I receptor stimulation results in the loss of the negative-feedback signal, leading to increased plasma renin activity. Numerous direct renin inhibitors were synthesized, but abandoned owing to low potency, poor bioavailability and short half-life. Aliskiren, a direct renin inhibitor of a novel structural class, inhibits the activity of the renin produced and, thus, its capacity to form angiotensin I, as measured by plasma renin activity. Aliskiren has been recently shown to be efficacious in hypertensive patients at once-daily oral dosing with favorable pharmacokinetics and the potential to improve end-organ protection.
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