ArticleFrontiers in immunology2025
Decoding neutrophil extracellular traps and key gene drivers in unexplained pregnancy loss.
Article in Frontiers in immunology, 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.
- Reconceptualizing chorioamnionitis as an immune-mediated inflammatory disorder at the maternal-fetal interface.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026Review
- Neutrophil extracellular traps in pregnancy complications.Frontiers in immunology · 2026Review
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Authors and funding
10 authors.
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Abstract
Background: Recurrent pregnancy loss (RPL) represents a critical reproductive health concern, with nearly half of RPL cases lacking clinically identifiable etiologies, termed unexplained RPL (uRPL). Neutrophil extracellular traps (NETs), released by activated neutrophils, have been implicated in the pathogenesis and progression of various reproductive disorders. However, the relationship between NETs and uRPL remains poorly characterized. Methods: This study enrolled 34 patients with uRPL and 30 healthy controls. Serum NETs biomarkers (MPO-DNA, citH3) were quantified via ELISA. Decidual tissues underwent histopathology (H&E), immunohistochemistry, and transcriptomics (6uRPL vs. 5 controls). Machine learning identified key NETs-related differentially expressed genes, validated by Western blotting. Immune cell infiltration and gene-immune correlations were assessed bioinformatically. Results: uRPL patients exhibited elevated serum NETs biomarkers (MPO-DNA, citH3; p<0.01) and increased decidual neutrophil infiltration. Immunohistochemistry confirmed upregulated MPO and citH3 in uRPL (p<0.01). Transcriptomics identified four key DE-NRGs (C3AR1, ITGAM, ITGB2, LYZ), validated at the protein level (p<0.05). Immune profiling revealed increased CD8+ T cells, M2 macrophages, and neutrophils, alongside reduced CD4+ memory T cells, follicular helper T cells, and monocytes in uRPL. All DE-NRGs correlated positively with M2 macrophages (r>0.6) and negatively with follicular helper T cells and monocytes (r<-0.5). LYZ also correlated with neutrophils (r>0.5). A nomogram incorporating DE-NRGs demonstrated robust diagnostic accuracy (AUC>0.85). Conclusion: This study establishes a novel link between NETs and the pathogenesis of uRPL. It highlights the abnormal activation of C3AR1, ITGAM, ITGB2, and LYZ, along with M2 macrophage polarization, as crucial factors in decidual immune dysregulation. These findings suggest that NETs could serve as therapeutic targets, while DE-NRGs may act as potential biomarkers for uRPL.
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