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An ideal wound dressing should achieve rapid hemostasis, provide antibacterial activity, and regulate the microenvironment to facilitate tissue regeneration. To address these needs, this work develops a novel selfgelling powder (COT) comprising carboxymethyl chitosan (CMCS), oxidized konjac glucomannan (OKGM), and tannic acid (TA). The COT powder exhibits rapid gelation upon contact with water, forming a COT hydrogel, making it suitable for controlling hemorrhage across diverse wound sites. In vitro and in vivo studies confirm that the COT possesses broad\u2010spectrum antibacterial activity and potent free radical scavenging capacity. When applied to infected wounds, the COT hydrogel significantly reduces oxidative stress and inflammatory responses while promoting angiogenesis and re\u2010epithelialization. Transcriptomic analysis suggests that COT modulates wound inflammation, likely by suppressing the NF\u2010\u03baB signaling pathway. Given its favorable mechanical properties, strong antibacterial\/antioxidant effects, ease of application, and rapid hemostatic performance, the COT emerges as a promising translational wound dressing for managing infected wounds.<\/jats:p>","DOI":"10.1002\/adhm.202501101","type":"journal-article","created":{"date-parts":[[2025,5,21]],"date-time":"2025-05-21T01:57:24Z","timestamp":1747792644000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Polysaccharide\u2010Based Self\u2010Gelling Powder With Antibacterial and Antioxidant Capacities for Acute Hemostasis and Efficient Infected Wound Healing"],"prefix":"10.1002","volume":"14","author":[{"given":"Wei","family":"Li","sequence":"first","affiliation":[{"name":"Department of Burn Surgery the First Affiliated Hospital, Naval Medical University  Shanghai 200433 P. R. 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