Medical News Observer

Key Points:

• This is a dual-sided biodegradable nanofibrous dressing with an inner layer of mussel adhesive protein for blood clotting and an outer layer of hydrophobic silk fibroin for mechanical strength and protection.
• It is fully biodegradable and biocompatible, making it ideal for post-surgical applications within the body, as demonstrated in rat liver damage model testing.
• This groundbreaking material represents a significant advancement in medical dressings, offering a combination of adequate hemostasis and a barrier against infection, with potential applications in patient care and surgery.

A collaborative effort by a team from Pohang University of Science and Technology (POSTECH), Ewha Womans University, and Seoul St. Mary’s Hospital has led to the development of a novel biodegradable nanofibrous dressing material. The research published in the international journal Small showcases a hemostatic agent that adheres firmly to tissue—even underwater—and forms a protective barrier against infection. 

Dual-sided biodegradable nanofibrous dressing 

Biodegradable nanofibrous dressing is created using a blend of bioengineered mussel adhesive protein (MAP) and silk fibroin (SF). This innovative dressing features a wound-adhesive inner layer of mussel adhesive protein, enriched with dihydroxyphenylalanine (DOPA), to enhance blood clotting through hemocyte aggregation and platelet activation. The outer layer, crafted from hydrophobic silk fibroin treated with alcohol, provides robust mechanical strength and a barrier against contaminants. 

Animal Studies

Both proteins are biocompatible and fully biodegradable, making the dressing suitable for post-surgical application inside the body. Testing on a rat liver damage model demonstrated efficacy in significantly reducing clotting time and blood loss. Thus showcasing its potential as an effective topical hemostatic agent that combines hemostasis with physical protection.

Implications

This biocompatible and biodegradable solution significantly advances medical materials, combining effective hemostasis with a barrier against contaminants and infection. It is currently under further investigation for its potential applications in patient care and surgery.

Reference

Lee, Jaeyun, Eunjin Kim, Ki-Joo Kim, Jong Won Rhie, Kye Il Joo, and Hyung Joon Cha. “Protective Topical Dual-Sided Nanofibrous Hemostatic Dressing Using Mussel and Silk Proteins with Multifunctionality of Hemostasis and Anti-Bacterial Infiltration.” Small n/a, no. n/a (n.d.): 2308833. https://doi.org/10.1002/smll.202308833.