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Mineralocorticoid receptor antagonists confer antiproteinuric effect in CKD

13 Dec 2019

Treatment with mineralocorticoid receptor antagonists (MRA) alone or in addition to renin–angiotensin system (RAS) blockade is associated with significant antiproteinuric effects, with a slight increase in mean potassium levels, in patients with chronic kidney disease (CKD), a study has shown.

A systematic review and meta-analysis was conducted to determine the effects of MRAs on albuminuria/proteinuria and adverse events, such as change in renal function and hyperkalaemia incidence. The investigators searched electronic databases, clinical trial registries and grey literature to retrieve randomized controlled trials (RCTs) that compared MRA alone or on top of RAS blockade with placebo or active treatment.

Forty-five studies with a total of 2,767 participants were initially identified, of which 31 were included in the analysis.

Compared with placebo, MRAs (alone or with RAS blockade) reduced urine albumin-to-creatinine ratio (UACR) by –24.55 percent (95 percent confidence interval [CI], –29.57 to –19.53 percent), urine protein-to-creatinine ratio by –53.93 percent (95 percent CI, –79 to –28.86 percent) and 24-h albumin excretion by –32.47 percent (95 percent CI, –41.1 to –23.85 percent).

MRAs, compared with calcium-channel blockers, also reduced UACR by –22.48 percent (95 percent CI, –24.51 to –20.44 percent), but there were no differences when compared with a second RAS blockade or nonpotassium-sparing diuretics.

The addition of an MRA resulted in a change in estimated glomerular filtration rate of –2.38 ml/min per 1.73 m2 (95 percent CI, −3.51 to −1.25), an increase in potassium by 0.22 mEq/l (95 percent CI, 0.16–0.28 mEq/l) and a 2.6-fold rise in the risk of hyperkalaemia (risk ratio, 2.63, 95 percent CI, 1.69–4.08) compared with placebo or active control.

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Most Read Articles
5 days ago
The use of capsule endoscopy (CE) appears to be effective in the diagnosis of iron deficiency anaemia (IDA), yielding a 33.9-percent yield in this study, with 65.8 percent of patients undergoing further workup and 12.7 percent requiring therapeutic intervention.
Roshini Claire Anthony, 4 hours ago

For coffee drinkers, drinking filtered coffee may be tied to a lower mortality risk, including cardiovascular disease (CVD)-related mortality, a study from Norway suggested.

2 days ago
Eating behaviours have been shown to moderate the relationship between cumulated risk factors in the first 1,000 days and adiposity outcomes at 6 years of age, which underscores modifiable behavioural targets for interventions, reports a study.
Stephen Padilla, Yesterday
Use of noninvasive ventilation (NIV), similar to invasive mechanical ventilation (IMV), appears to lessen mortality but may increase the risk for transmission of the novel coronavirus disease (COVID-19) in healthcare workers, suggest the results of a study.