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Calcium antagonists and renal failure progression
1Hospital Infanta Cristina, Badajoz, Spain. nroblesp@senefro.org
Insights
Newer calcium antagonists show promise in protecting kidneys from chronic renal failure. These drugs, including manidipine and lercanidipine, may reduce proteinuria and microalbuminuria, offering nephroprotective effects.
Area of Science:
- Nephrology
- Pharmacology
- Cardiovascular Medicine
Background:
- While tight blood pressure control is key for chronic renal failure, angiotensin-converting enzyme inhibitors and angiotensin receptor blockers offer organ protection.
- The specific renal effects of calcium antagonists are less defined, despite their potential pleiotropic kidney-protective actions.
Purpose of the Study:
- To explore the nephroprotective mechanisms and clinical renal effects of calcium antagonists, particularly newer dihydropyridinic agents.
- To evaluate the role of specific calcium antagonists like manidipine and lercanidipine in managing renal disease and proteinuria.
Main Methods:
- Review of existing evidence on calcium antagonists' effects on kidney physiology.
- Analysis of studies investigating the impact of manidipine and lercanidipine on proteinuria and microalbuminuria, including combination therapy.
Main Results:
- Calcium antagonists exhibit pleiotropic effects, including attenuating mesangial entrapment, counteracting growth factor effects, and suppressing mesangial cell proliferation.
- Newer dihydropyridinic calcium antagonists may decrease filtration fraction, offering nephroprotection comparable to renin-angiotensin axis blockers.
- Manidipine and lercanidipine show potential in reducing proteinuria and microalbuminuria, with lercanidipine demonstrating efficacy in combination therapy.
Conclusions:
- Newer calcium antagonists possess distinct nephroprotective properties beyond blood pressure reduction.
- Manidipine and lercanidipine represent promising therapeutic options for patients with chronic renal failure, particularly in reducing proteinuria and microalbuminuria.
Abstract:
Although tighter blood pressure control is considered the main mechanism for preventing the progression of chronic renal failure, angiotensin-converting enzyme inhibitors and angiotensin receptors blockers seem to have an additional organ protective role. The effects of calcium antagonists in renal disease are not so clearly defined. Calcium antagonists have pleiotropic effects that might contribute to protect the kidney, such as attenuating mesangial entrapment of macromolecules, countervailing the mitogenic effect of platelet-derived growth factors and platelet-activating factors, and suppressing mesangial cell proliferation. They could also act as free radical scavengers and inhibit the renal effects of endothelin. Some evidence has been accumulated demonstrating that certain new dihydropyridinic calcium antagonists may affect postglomerular as well as preglomerular vessels, resulting in decreased filtration fraction and nephroprotective effect as renin-angiotensin axis-blocking drugs. Though there are few reports on the clinical renal effects of new calcium antagonists, they have rendered promising results. Manidipine does not increase proteinuria as do some classic calcium antagonists, and lercanidipine combined with renin-angiotensin axis-blocking drugs reduce proteinuria. Both drugs have been shown to decrease microalbuminuria when administered alone.
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