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The study presents a multifunctional hydrogel, QTMP-Gel, designed to treat oral mucositis (OM) by addressing oxidative damage and bacterial infection. The hydrogel, made from quaternary ammonium chitosan and tannic acid, adheres well to wet oral mucosa and releases drugs in response to reactive oxygen species (ROS). It contains platinum nanoparticles for ROS scavenging and minocycline hydrochloride for antibacterial and anti-inflammatory effects. In vitro tests showed excellent biocompatibility and effectiveness against E. coli and S. aureus. In a hamster model, QTMP-Gel accelerated wound healing, reduced proinflammatory cytokines, and cleared excess ROS, offering a promising approach for OM treatment.

Pyruvate kinase muscle isoform 2 (PKM2) is identified as a promising target for cardiac repair and regeneration due to its roles in cellular metabolism, proliferation, and protection against oxidative stress. PKM2 enhances cardiomyocyte proliferation, reduces oxidative stress by increasing NADPH levels, and minimizes DNA damage. It also interacts with signaling molecules like β-catenin and HIF-1α to promote cell cycle reentry and angiogenesis. These functions position PKM2 as a key metabolic and signaling hub, making it a potential therapeutic target for advancing regenerative therapies in cardiovascular medicine.