Mechanical and biological performances of new scaffolds made of collagen hydrogels and fibroin microfibers for vascular tissue engineering.

Macromol Biosci

Laboratory of Engineering and Chemistry of Products, School of Chemical Engineering, University of Campinas, UNICAMP, Campinas, Brazil.

Published: September 2012

A microstructured composite material made of collagen hydrogel (matrix) and silk fibroin microfibers (randomly oriented reinforcing fibers) is investigated in order to conjugate the mechanical resistance of fibroin with the suitable biological performance of collagen to design new scaffolds for vascular tissue engineering. Results show that fibroin microfibers and collagen fibrils have suitable interfacial adhesion, and the scaffold exhibits improved mechanical properties if compared with a pure collagen hydrogel. Furthermore, the overall biological performance is improved.

Download full-text PDF

Source
http://dx.doi.org/10.1002/mabi.201200060DOI Listing

Publication Analysis

Top Keywords

fibroin microfibers
12
vascular tissue
8
tissue engineering
8
collagen hydrogel
8
biological performance
8
collagen
5
mechanical biological
4
biological performances
4
performances scaffolds
4
scaffolds collagen
4

Similar Publications

Silk microfiber scaffolds have garnered increasing interest due to their outstanding properties, with degumming being the process used to extract the sericin from the cocoon. In the present study, an attempt to tune the biodegradation period of silk through degumming with various sodium borohydride (NaBH) concentrations and degumming times was studied. We considered the process, the number of baths used, and the salt concentration.

View Article and Find Full Text PDF

Silk-based biodegradable materials play an important role in tissue engineering, especially in the field of bone regeneration. However, while optimizing mechanical properties and bone regeneration characteristics, modified silk fibroin (SF)-based materials also increase the complexity of scaffold systems, which is not conducive to clinical translation. In this study, we first added synthetic biomimetic mineralized collagen (MC) particles to SF-based materials to improve the bone regeneration properties of the scaffolds and simultaneously regulated the degradation rate of the scaffolds to match the bone regeneration rate.

View Article and Find Full Text PDF

Volumetric muscle loss (VML) presents a significant challenge in tissue engineering due to the irreparable nature of extensive muscle injuries. In this study, we propose a novel approach for VML treatment using a bioink composed of silk microfiber-reinforced silk fibroin (SF) hydrogel. The engineered scaffolds are predesigned to provide structural support and fiber alignment to promote tissue regeneration in situ.

View Article and Find Full Text PDF

In-Situ and Green Synthesis of Silk Fibroin-Silver Nanoparticles Composite Microfibers for Enhanced Antibacterial Applications.

Chempluschem

September 2024

Institute for Smart Biomedical Materials, School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou, 310000, PR China.

The antibacterial properties of modified silk fibroin microfibers (SF MFs) have been widely studied. Among various modifications, integration of silver nanoparticles (Ag NPs) and SF MFs has garnered significant attention due to the broad-spectrum antibacterial activities and long-term antibacterial effect of Ag nanomaterials. However, the traditional introduction of reducing agents or other additives during the synthesis of Ag-SF composite MFs potentially affects their structure and antibacterial properties.

View Article and Find Full Text PDF
Article Synopsis
  • Current 3D silk fibroin scaffold creation methods struggle with unwanted molecular rearrangement, leading to brittleness and poor organization at various scales.
  • A novel process using electrowriting and sodium dihydrogen phosphate allows for controlled gelation and formation of stable structures with both β-sheet and random coil conformations, while achieving customizable architectures.
  • The resulting scaffolds support the growth and alignment of renal epithelial and endothelial cells, promoting healthy tissue development, which shows promise for future tissue engineering applications.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!