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Experimental Study on Rapid Hemostasis Using Peptide Hydrogels.

Linru Zeng1, Gan Luo1, Zhenshuang Yue1

  • 1Department of Orthopedics, Hangzhou Xiaoshan Traditional Chinese Medical Hospital, Hangzhou 311201, P. R. China.

ACS Omega
|March 4, 2024
PubMed
Summary
This summary is machine-generated.

New peptide nanofibers rapidly stop bleeding and promote healing. These self-assembling biomaterials offer a promising hemostatic agent for trauma and surgical bleeding, outperforming commercial products.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Regenerative Medicine

Background:

  • Uncontrolled hemorrhaging poses significant mortality risks in civilian and military settings.
  • Self-assembling peptide nanofibers show potential for rapid hemostasis, biocompatibility, and wound healing.

Purpose of the Study:

  • To design and characterize novel peptide nanofibers for hemostasis.
  • To evaluate their self-assembly, biocompatibility, and in vivo hemostatic efficacy.

Main Methods:

  • Peptide design incorporating fishnet-like and RGD sequences.
  • Characterization using Transmission Electron Microscopy, Scanning Electron Microscopy, Circular Dichroism, and Fourier Transform Infrared Spectroscopy.
  • In vitro cell proliferation assays and in vivo hemostasis tests on rat models.

Main Results:

  • Peptides self-assembled into stable hydrogels with nanoweb and nanofiber structures.
  • Demonstrated β-sheet dominant secondary structure with supporting β-turn and α-helix.
  • Promoted fibroblast and hepatocyte proliferation and showed significant hemostatic effect, achieving 38s faster hemostasis than commercial agents.
  • Effective in promoting rapid repair of liver defects.

Conclusions:

  • The designed peptide nanofibers effectively promote hemostasis and tissue repair.
  • This self-assembly strategy presents a promising clinical treatment for severe bleeding, particularly liver hemorrhage.
  • Further development of peptide hydrogels as hemostatic agents is warranted.