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. 2004 Oct 9;329(7470):828.
doi: 10.1136/bmj.38237.585000.7C. Epub 2004 Sep 30.

Effects of angiotensin converting enzyme inhibitors and angiotensin II receptor antagonists on mortality and renal outcomes in diabetic nephropathy: systematic review

Giovanni F M Strippoli  1 , Maria Craig, Jonathan J Deeks, Francesco Paolo Schena, Jonathan C Craig
Affiliations

Effects of angiotensin converting enzyme inhibitors and angiotensin II receptor antagonists on mortality and renal outcomes in diabetic nephropathy: systematic review

Giovanni F M Strippoli et al. BMJ. .

Abstract

Objective: To evaluate the effects of angiotensin converting enzyme (ACE) inhibitors and angiotensin II receptor antagonists (AIIRAs) on renal outcomes and all cause mortality in patients with diabetic nephropathy.

Data sources: Medline, Embase, the Cochrane controlled trials register, conference proceedings, and contact with investigators.

Study selection: Trials comparing ACE inhibitors or AIIRAs with placebo or with each other in patients with diabetic nephropathy.

Data extraction: Mortality, renal outcomes (end stage renal disease, doubling of serum creatinine concentration, prevention of progression of microalbuminuria to macroalbuminuria, remission of microalbuminuria), and quality of trials.

Data synthesis: 36 of 43 identified trials compared ACE inhibitors with placebo (4008 patients), four compared AIIRAs with placebo (3331 patients), and three compared ACE inhibitors with AIIRAs (206 patients). We obtained unpublished data for 11 trials. ACE inhibitors significantly reduced all cause mortality (relative risk 0.79, 95% confidence interval 0.63 to 0.99) compared with placebo but AIIRAs did not (0.99, 0.85 to 1.17), although baseline mortality was similar in the trials. Both agents had similar effects on renal outcomes. Reliable estimates of the unconfounded relative effects of ACE inhibitors compared with AIIRAs could not be obtained owing to small sample sizes.

Conclusion: Although the survival benefits of ACE inhibitors for patients with diabetic nephropathy are known, the relative effects of ACE inhibitors and AIIRAs on survival are unknown owing to the lack of adequate head to head trials.

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Figures

Fig 1
Fig 1
Flow chart showing number of citations retrieved by individual searches and number of trials included in review
Fig 2
Fig 2
Effect of angiotensin converting enzyme inhibitors or angiotensin II receptor antagonists compared with placebo or no treatment on overall mortality
Fig 3
Fig 3
Effect of angiotensin converting enzyme inhibitors compared with placebo or no treatment on renal function (doubling of serum creatinine concentration and end stage renal disease)
Fig 4
Fig 4
Effect of angiotensin converting enzyme inhibitors compared with placebo or no treatment on risk of progression from microalbuminuria to macroalbuminuria
Fig 5
Fig 5
Effect of angiotensin converting enzyme inhibitors compared with placebo or no treatment on rate of progression from microalbuminuria to normoalbuminuria
Fig 6
Fig 6
Effect of angiotensin II receptor antagonists compared with placebo or no treatment on renal function (doubling of serum creatinine concentration and end stage renal disease)
Fig 7
Fig 7
Effect of angiotensin II receptor antagonists compared with placebo or no treatment on albuminuria, showing agent reduces risk of progression from microalbuminuria to macroalbuminuria
Fig 8
Fig 8
Effect of angiotensin II receptor antagonists compared with placebo or no treatment on rate of regression from microalbuminuria to normoalbuminuria
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References

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