ReviewFrontiers in immunology2026
Gut-lung axis in radiation-induced lung injury: mechanisms and interventions.
Review in Frontiers in immunology, 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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7 authors.
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Abstract
Radiation-induced lung injury (RILI) constrains thoracic radiotherapy dosing and includes acute radiation pneumonitis (RP) and chronic radiation-induced pulmonary fibrosis (RPF). This narrative review explores the gut-lung microbiota axis in RILI, synthesizing evidence from preclinical models, clinical cohorts (N = 52-89), and randomized controlled trials (RCTs). Radiotherapy induces gut dysbiosis, barrier breakdown, and metabolite changes [e.g., short-chain fatty acid (SCFA) and desaminotyrosine (DAT) depletion], promoting inflammation and fibrosis via pathways such as Toll-like receptor 4/nuclear factor kappa B (TLR4/NF-κB), TGF-β/Smad, sphingosine-1-phosphate (S1P)-S1PR, and cGAS-STING in animal studies. Inter-species microbial variations hinder translation, while lung microbiota shifts remain nascent. In non-small cell lung cancer cohorts, lower gut microbiota stability (a marker of dysbiosis) is associated with an increased risk of grade ≥2 RP (multivariable-adjusted models, p < 0.05), with higher baseline
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