A thixotropic injectable regenerated silk fibroin/hydroxypropylcellulose (RSF/HPC) hydrogel for highly sustainable dual-drug release with improved anticancer therapy and alleviated side effects.
Death
from lethal hemorrhage remains a major problem in various
emergency scenarios. There is a continuous interest in the development
of absorbable hemostatic dressings that can control hemorrhage rapidly
and can be left in the wound site without removal. In this study,
we report a hemostatic gauze dressing based on N-carboxyethyl
chitosan (CECS) gelling fibers. The CECS fibrillar gauze combines
ultra-hydrophilic, cationic chemical property of the fiber components
with the fluffy nonwoven material form, exhibiting good conformability
for wound filling, high fluid uptaking capacity, and enhanced blood-concentrating
effect. In a swine femoral artery injury model, the CECS fibrillar
gauze achieves shorter time to hemostasis and less blood loss compared
with commercially available hemostatic dressings. This chitosan gelling
fiber gauze demonstrates comparable bioabsorbability to clinically
used absorbable hemostat and thus may be applied to treat fatal hemorrhage
both in emergency medical services and in internal surgical procedures.
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