ArticlePloS one2026
Ulinastatin attenuates capillary leakage and suppresses FoxO1-dependent angiopoietin-2 in sepsis-associated acute lung injury via PI3K pathway.
Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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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Who cites it
1 citing paper in PubMed.
- Preventive effect of ulinastatin on postoperative cognitive dysfunction through modulation of the gut microbiome: evidence from short-chain fatty acids.Brain, behavior, & immunity - health · 2026Article
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Authors and funding
15 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Sepsis-associated acute lung injury (SALI) is characterized by endothelial barrier dysfunction and capillary leakage. Ulinastatin (UTI), a serine protease inhibitor with recognized clinical benefits in sepsis, has been reported to protect endothelial function, but the underlying mechanisms remain incompletely defined. This study investigated the protective effects of UTI against SALI and its specific mechanism of action. We found that UTI attenuated lung injury and endothelial dysfunction in both cecal ligation and puncture (CLP)-induced septic rats and LPS-stimulated human umbilical vein endothelial cells (HUVECs). UTI treatment reduced the expression of angiopoietin-2 (Ang-2), a key mediator of vascular destabilization, and exerted similar protective effects on endothelial function as dexamethasone (DEX). Mechanistically, UTI was demonstrated to have a stable interaction and favorable binding affinity to PI3K by docking and activating the PI3K/Akt signaling pathway. This led to phosphorylation and subsequent nuclear export of the transcription factor FoxO1, thereby suppressing FoxO1-dependent Ang-2 transcription. The protective effects of UTI on capillary leakage and junctional protein integrity were abolished by the PI3K inhibitor wortmannin. In conclusion, our findings demonstrate that UTI alleviates SALI by disrupting an Ang-2-mediated vicious cycle via the PI3K/Akt/FoxO1 pathway, revealing a novel mechanistic insight into its therapeutic action against sepsis-induced vascular leakage.
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