Injectable, Antibacterial, and Hemostatic Tissue Sealant Hydrogels

Reihaneh Haghniaz, Hossein Montazerian, Atiya Rabbani, Avijit Baidya, Brent Usui, Yangzhi Zhu, Maryam Tavafoghi, Fazli Wahid, Han Jun Kim, Amir Sheikhi, Ali Khademhosseini

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Hemorrhage and bacterial infections are major hurdles in the management of life-threatening surgical wounds. Most bioadhesives for wound closure lack sufficient hemostatic and antibacterial properties. Furthermore, they suffer from weak sealing efficacy, particularly for stretchable organs, such as the lung and bladder. Accordingly, there is an unmet need for mechanically robust hemostatic sealants with simultaneous antibacterial effects. Here, an injectable, photocrosslinkable, and stretchable hydrogel sealant based on gelatin methacryloyl (GelMA), supplemented with antibacterial zinc ferrite (ZF) nanoparticles and hemostatic silicate nanoplatelets (SNs) for rapid blood coagulation is nanoengineered. The hydrogel reduces the in vitro viability of Staphylococcus aureus by more than 90%. The addition of SNs (2% w/v) and ZF nanoparticles (1.5 mg mL−1) to GelMA (20% w/v) improves the burst pressure of perforated ex vivo porcine lungs by more than 40%. Such enhancement translated to ≈250% improvement in the tissue sealing capability compared with a commercial hemostatic sealant, Evicel. Furthermore, the hydrogels reduce bleeding by ≈50% in rat bleeding models. The nanoengineered hydrogel may open new translational opportunities for the effective sealing of complex wounds that require mechanical flexibility, infection management, and hemostasis.

Original languageEnglish (US)
Article number2301551
JournalAdvanced Healthcare Materials
Volume12
Issue number31
DOIs
StatePublished - Dec 15 2023

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Biomedical Engineering
  • Pharmaceutical Science

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