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Selenium and outcome in heart failure

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journal contribution
posted on 11.05.2020, 14:00 by Nils Bomer, Niels Grote Beverborg, Martijn F Hoes, Koen W Streng, Mathilde Vermeer, Martin M Dokter, Jan IJmker, Stefan D Anker, John GF Cleland, Hans L Hillege, Chim C Lang, Leong L Ng, Nilesh J Samani, Jasper Tromp, Dirk J van Veldhuisen, Daan J Touw, Adriaan A Voors, Peter van der Meer
Aims: Severe deficiency of the essential trace element selenium can cause myocardial dysfunction although the mechanism at cellular level is uncertain. Whether, in clinical practice, moderate selenium deficiency is associated with worse symptoms and outcome in patients with heart failure is unknown.
Methods and results: BIOSTAT-CHF is a multinational, prospective, observational cohort study that enrolled patients with worsening heart failure. Serum concentrations of selenium were measured by inductively coupled plasma mass spectrometry. Primary endpoint was a composite of all-cause mortality and hospitalization for heart failure; secondary endpoint was all-cause mortality. To investigate potential mechanisms by which selenium deficiency might affect prognosis, human cardiomyocytes were cultured in absence of selenium, and mitochondrial function and oxidative stress were assessed. Serum selenium concentration (deficiency) was <70 μg/L in 485 (20.4%) patients, who were older, more often women, had worse New York Heart Association class, more severe signs and symptoms of heart failure and poorer exercise capacity (6-min walking test) and quality of life (Kansas City Cardiomyopathy Questionnaire). Selenium deficiency was associated with higher rates of the primary endpoint [hazard ratio (HR) 1.23; 95% confidence interval (CI) 1.06–1.42] and all-cause mortality (HR 1.52; 95% CI 1.26–1.86). In cultured human cardiomyocytes, selenium deprivation impaired mitochondrial function and oxidative phosphorylation, and increased intracellular reactive oxygen species levels.
Conclusions: Selenium deficiency in heart failure patients is independently associated with impaired exercise tolerance and a 50% higher mortality rate, and impaired mitochondrial function in vitro, in human cardiomyocytes. Clinical trials are needed to investigate the effect of selenium supplements in patients with heart failure, especially if they have low plasma concentrations of selenium.

Funding

BIOSTAT‐CHF was funded by a grant from the European Commission (FP7‐242209‐BIOSTAT‐CHF). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

History

Citation

Bomer, N., Grote Beverborg, N., Hoes, M.F., Streng, K.W., Vermeer, M., Dokter, M.M., IJmker, J., Anker, S.D., Cleland, J.G., Hillege, H.L., Lang, C.C., Ng, L.L., Samani, N.J., Tromp, J., van Veldhuisen, D.J., Touw, D.J., Voors, A.A. and van der Meer, P. (2020), Selenium and outcome in heart failure. Eur J Heart Fail. doi:10.1002/ejhf.1644

Version

VoR (Version of Record)

Published in

EUROPEAN JOURNAL OF HEART FAILURE

Pagination

(9)

Publisher

WILEY

issn

1388-9842

eissn

1879-0844

Acceptance date

18/09/2019

Copyright date

2019

Available date

06/12/2019

Publisher version

https://onlinelibrary.wiley.com/doi/full/10.1002/ejhf.1644

Language

English