ArticleCells2026
Genetic Deficiency of the Macrophage Csf2ra Receptor Modulates Inflammatory Responses Following Cardiac Ischaemic Injury in Mice.
Article in Cells, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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8 authors.
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Abstract
Myocardial infarction (MI) triggers a robust inflammatory response that is essential for tissue repair but, when excessive or prolonged, drives pathological cardiac remodelling and heart failure. Colony-stimulating factor 2 (CSF2) signalling has been implicated in driving pro-inflammatory macrophage activation post-MI. Here, we investigated the role of macrophage-specific CSF2 receptor alpha (CSF2RA) signalling in post-MI remodelling using a tamoxifen-inducible genetic mouse model and permanent coronary artery ligation. Macrophage-specific Csf2ra deficiency significantly improved left ventricular systolic function post-MI without altering cardiac fibrosis burden. Functional improvement was associated with enhanced collagen scar maturation, characterised by an increased proportion of mature collagen fibres, and with accumulation of anti-inflammatory, pro-reparative macrophages within the infarct. These macrophage changes were accompanied by increased fibroblast density, consistent with altered macrophage-fibroblast crosstalk. Collectively, these findings identify macrophage-intrinsic CSF2RA signalling as a critical regulator of inflammatory resolution and scar maturation after MI and provide mechanistic support for the rationale of selective CSF2RA inhibition as a therapeutic strategy to limit adverse cardiac remodelling and improve post-infarction recovery.
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