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Erschienen in: Diabetologia 5/2008

01.05.2008 | Article

Spironolactone for poorly controlled hypertension in type 2 diabetes: conflicting effects on blood pressure, endothelial function, glycaemic control and hormonal profiles

verfasst von: K. Swaminathan, J. Davies, J. George, N. S. Rajendra, A. D. Morris, A. D. Struthers

Erschienen in: Diabetologia | Ausgabe 5/2008

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Abstract

Aims/hypothesis

Aldosterone antagonism improves endothelial function (and reduces deaths) in chronic heart failure. It is not known whether similar effects occur in other high-risk groups such as patients with diabetes and hypertension. We therefore assessed the full effects of aldosterone blockade in poorly controlled hypertensive patients with type 2 diabetes, focussing on blood pressure, endothelial function, glycaemic control and key hormones.

Methods

We performed a randomised, placebo-controlled, double-blind, crossover study on 50 patients with type 2 diabetes and treated but poorly controlled hypertension, comparing spironolactone versus placebo. Patients had their endothelial function assessed by standard forearm venous occlusion plethysmography.

Results

There was no significant improvement in endothelium-dependent vasodilatation in response to acetylcholine, despite highly significant reductions in systolic and diastolic blood pressure. However, spironolactone significantly worsened glycaemic control, plasma angiotensin II and cortisol.

Conclusions/interpretation

Spironolactone is highly effective in lowering blood pressure in patients with type 2 diabetes and poorly controlled hypertension on standard treatment, but does not improve vascular endothelial function in this group. We speculate that any tendency for the spironolactone-induced lowering of blood pressure to improve endothelial function is offset by its tendency to worsen glycaemic control and increase the levels of angiotensin II and even possibly cortisol.
Trials Registry no.: ISRCTN 76558770
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Metadaten
Titel
Spironolactone for poorly controlled hypertension in type 2 diabetes: conflicting effects on blood pressure, endothelial function, glycaemic control and hormonal profiles
verfasst von
K. Swaminathan
J. Davies
J. George
N. S. Rajendra
A. D. Morris
A. D. Struthers
Publikationsdatum
01.05.2008
Verlag
Springer-Verlag
Erschienen in
Diabetologia / Ausgabe 5/2008
Print ISSN: 0012-186X
Elektronische ISSN: 1432-0428
DOI
https://doi.org/10.1007/s00125-008-0972-5

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