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Beneficial Effects of Adding Spironolactone to Recommended Antihypertensive Treatment in Diabetic Nephropathy

Open access
Rossing, Kasper, Schjoedt, Katrine J., Smidt, Ulla M., Boomsma, Frans, Parving, Hans-Henrik·2005·Diabetes Care

Abstract

OBJECTIVE—The objective of this study was to evaluate the safety and short-term effect of adding spironolactone to conventional antihypertensive treatment including diuretics and maximally recommended doses of an ACE inhibitor or an angiotensin II receptor blocker (ARB) on albuminuria and blood pressure in type 2 diabetic patients with nephropathy. RESEARCH DESIGN AND METHODS—Twenty-one type 2 diabetic patients with nephropathy were enrolled in a randomized, double-masked, cross-over study. Patients were treated in random order with spironolactone 25 mg once daily and matched placebo for 8 weeks, respectively, in addition to ongoing antihypertensive treatment including diuretics and maximally recommended doses of an ACE inhibitor and/or an ARB. At the end of each treatment period, albuminuria, 24-h ambulatory blood pressure (ABP), and glomerular filtration rate (GFR) were determined. RESULTS—During the addition of placebo, values were as follows: albuminuria (geometric mean [range]) 1,566 [655–7,762] mg/24 h, ABP (mean ± SE) 138 ± 3/71 ± 1 mmHg, and GFR (mean ± SE) 74 ± 6 ml/min per 1.73 m2. During the addition of spironolactone, albuminuria was reduced by 33% (95% CI 25–41) (P < 0.001), fractional clearance of albumin by 40% (24–53) (P < 0.001), and 24-h ABP by 6 mmHg (2–10) for systolic and 4 mmHg (2–6) for diastolic (P < 0.001 for both). The change in albuminuria did not correlate with the change in systolic 24-h ABP (r = 0.19, P = 0.42) or diastolic 24-h ABP (r = 0.01, P = 0.96). Spironolactone treatment induced an insignificant reversible reduction in GFR of 3 ml/min per 1.73 m2 (−0.3 to 6) (P = 0.08). One patient was excluded from the study due to hyperkalemia. Otherwise treatment was well tolerated. CONCLUSIONS—Our study suggests that spironolactone safely adds to the reno- and cardiovascular protective benefits of treatment with maximally recommended doses of ACE inhibitor and ARB by reducing albuminuria and blood pressure in type 2 diabetic patients with nephropathy.

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Metadata

Authors
Rossing, K., Schjoedt, K. J., Smidt, U. M., Boomsma, F., & Parving, H.-H.
Venue
Diabetes Care
Published
2005-09-01
Volume
28
Issue
9
Pages
2106-2112
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2118932957
Cited by
299
References
44
FWCI
14.45
Type
journal article
Language
en
Open access
bronze

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Rossing, K., Schjoedt, K. J., Smidt, U. M., Boomsma, F., & Parving, H.-H. (2005). Beneficial Effects of Adding Spironolactone to Recommended Antihypertensive Treatment in Diabetic Nephropathy. Diabetes Care. https://doi.org/10.2337/diacare.28.9.2106

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