ArticleEuropean journal of heart failure2025
The transcriptional profile of iron deficiency in patients with heart failure: Heme-sparing and reduced immune processes.
Article in European journal of heart failure, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Iron Matters: Comparative Impact of Beta-Adrenergic Stimulation and Iron Chelation on Cardiac Iron Metabolism and Mitochondrial Function.Biomolecules · 2026Article
- Iron Deficiency in Heart Failure: Cellular Mechanisms and Therapeutic Implications.Journal of cardiovascular development and disease · 2025Review
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Authors and funding
18 authors.
Funding
Abstract
aimsIron deficiency (ID) is highly prevalent in patients with heart failure (HF) and associated with morbidity and poor prognosis, but pathophysiological mechanisms are unknown. We aimed to identify novel biological pathways affected by ID. METHODS AND
resultsWe studied 881 patients with HF from the BIOSTAT-CHF cohort. ID was defined as a transferrin saturation <20%. Transcriptome profiling was performed in whole blood. Identified targets were validated in a human in vitro stem cell-derived cardiomyocyte ID model utilizing deferoxamine as iron chelator. ID was identified in 554 (62.9%) patients, and 89 differentially expressed genes between ID and non-ID were identified, of which 60 were up- and 29 were downregulated. Upregulated genes were overrepresented in pathways of erythrocyte development and homeostasis. Heme biosynthetic processes were confirmed as relatively upregulated in ID, while iron-sulfur cluster assembly was downregulated. Downregulated processes further included natural killer cell and lymphocyte mediated immunity. In agreement with patient data, cardiomyocyte iron depletion significantly induced the expression of two genes (SIAH2 and CLIC4), which could be normalized upon iron supplementation. Both SIAH2 and CLIC4 are associated with increased mortality in patients with HF (hazard ratio 2.40, 95% confidence interval 1.86-3.11, p < 0.001 hazard ratio 1.78, 95% confidence interval 1.53-2.07, p < 0.001, respectively).
conclusionIron deficiency is associated with the preservation of heme-related processes at the cost of iron-sulfur clusters. Immune processes are downregulated, uncovering another high energy demand system affected. SIAH2 and CLIC4 might be modifiable factors in the relation between ID and impaired prognosis.
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