Amlodipine kidney
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Amlodipine and Kidney Health: A Comprehensive Review
Introduction to Amlodipine and Kidney Function
Amlodipine, a calcium channel blocker, is widely used to manage hypertension, a common comorbidity in chronic kidney disease (CKD). This article synthesizes research findings on the effects of amlodipine on kidney function, particularly in patients with CKD and those who have undergone renal transplantation.
Amlodipine and Proteinuria in CKD
Proteinuria, or the presence of excess proteins in urine, is a significant marker of kidney damage. Studies comparing amlodipine with other antihypertensive agents, such as losartan, have shown that while both drugs effectively control blood pressure, losartan significantly reduces proteinuria, whereas amlodipine does not . This suggests that amlodipine may not offer the same level of renoprotection in terms of reducing proteinuria.
Vascular and Structural Benefits of Amlodipine
Amlodipine has been shown to improve vascular function and reduce blood pressure in hypertensive CKD models. In the Lewis Polycystic Kidney (LPK) rat model, amlodipine treatment improved endothelial function and reduced blood pressure and plasma creatinine levels, although it did not completely normalize vascular structure . This indicates that while amlodipine can ameliorate some vascular issues associated with CKD, it may not fully reverse structural damage.
Amlodipine in Experimental Hypertension Models
In experimental models of hypertension, amlodipine effectively reduces systemic blood pressure but does not significantly impact glomerular filtration rate, proteinuria, or glomerular injury . This suggests that while amlodipine is effective for blood pressure management, it may not provide comprehensive protection against kidney damage in hypertensive conditions.
Renal Transplant Recipients and Amlodipine
In renal transplant recipients, amlodipine has shown beneficial effects on renal function. A study on normotensive renal transplant recipients found that amlodipine significantly reduced serum creatinine levels and showed a trend towards increased renal plasma flow without affecting blood pressure or heart rate . Additionally, amlodipine has been effective in reducing cyclosporin-induced hyperuricaemia and improving glomerular filtration rate in hypertensive renal transplant recipients .
Comparative Studies: Amlodipine vs. Other Antihypertensives
Comparative studies have highlighted that other antihypertensive agents, such as telmisartan, may offer superior renal and vascular protective effects compared to amlodipine. In hypertensive CKD patients, telmisartan was more effective in reducing serum creatinine, proteinuria, and markers of atherosclerosis than amlodipine . This suggests that while amlodipine is beneficial, other agents may provide more comprehensive renoprotection.
Mechanistic Insights: Amlodipine and Renal Hemodynamics
Amlodipine has been shown to reverse angiotensin II-induced reductions in glomerular filtration rate in isolated perfused kidney models, indicating its potential to improve renal hemodynamics . Additionally, in models of renal interstitial fibrosis, amlodipine reduced fibrosis markers by inhibiting specific signaling pathways .
Amlodipine in Diabetic Nephropathy
In diabetic nephropathy models, amlodipine reduced albuminuria and renal injury markers, suggesting its potential utility in managing diabetic kidney disease . However, its effectiveness may be less pronounced compared to other calcium channel blockers that target multiple pathways.
Conclusion
Amlodipine is effective in managing hypertension and offers some renal protective benefits, particularly in improving vascular function and reducing serum creatinine in renal transplant recipients. However, its impact on proteinuria and comprehensive renal protection may be limited compared to other antihypertensive agents. Further research is needed to fully understand its role in kidney health and to optimize treatment strategies for CKD patients.
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Most relevant research papers on this topic
Effects of amlodipine on glomerular filtration, growth, and injury in experimental hypertension.
Amlodipine reduces systemic blood pressure but does not affect kidney structure and function, suggesting it may not prevent hypertensive nephrosclerosis.
Renal effects of amlodipine in normotensive renal transplant recipients.
Amlodipine effectively reduced serum creatinine in normotensive renal transplant recipients after 8 weeks of treatment, and was well-tolerated and well-tolerated in concomitant administration with cyclosporin A.
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Amlodipine reduces cyclosporin-induced hyperuricaemia in hypertensive renal transplant recipients.
Amlodipine may be more appropriate than tertatolol for treating cyclosporin-induced hypertension and hyperuricaemia in renal transplant recipients.
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