Biological evaluation of polyvinyl alcohol hydrogel crosslinked by polyurethane chain for cartilage tissue engineering in rabbit model

J Mater Sci Mater Med. 2013 Oct;24(10):2449-60. doi: 10.1007/s10856-013-4995-1. Epub 2013 Jun 27.

Abstract

Polyvinyl alcohol (PVA) hydrogel chains were crosslinked by urethane pre-polymer (PPU) in order to fabricate a new substitute for cartilage lesions. The microscopy images showed that the cultured chondrocytes had spherical morphology on PVA-PPU sample after 4 weeks of isolation in vitro. The alcian blue and safranin O staining proved the presence of proteoglycan on the surface of PVA-PPU sample secreted by cultured chondrocytes. This was confirmed by the detection of sulfate ions in the wavelength dispersive X-ray (WDX) analysis. In addition, the expression of collagen type II and aggrecan were observed in chondrocytes cultured on PVA-PPU by RT-PCR. Moreover, the implantation of the PVA-PPU sample with autologous cultured chondrocytes revealed the formation of neocartilage tissue in a rabbit model during 12 weeks follow up. In conclusion, the results verified that isolated chondrocytes cultured on PVA-PPU retain their original phenotype and this composition can be considered as promising substrate for cartilage tissue engineering.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Aggrecans / chemistry*
  • Alcian Blue / chemistry
  • Animals
  • Cartilage / metabolism*
  • Cartilage, Articular / cytology
  • Cell Differentiation
  • Chondrocytes / cytology
  • Collagen / chemistry
  • Cross-Linking Reagents / chemistry
  • Microscopy, Atomic Force
  • Phenazines / chemistry
  • Polystyrenes / chemistry
  • Polyurethanes / chemistry*
  • Polyvinyl Alcohol / chemistry*
  • Pressure
  • Proteoglycans / chemistry
  • Rabbits
  • Sulfates / chemistry
  • Tensile Strength
  • Tissue Engineering / methods*

Substances

  • Aggrecans
  • Cross-Linking Reagents
  • Phenazines
  • Polystyrenes
  • Polyurethanes
  • Proteoglycans
  • Sulfates
  • polyvinyl alcohol hydrogel
  • Polyvinyl Alcohol
  • Collagen
  • Alcian Blue
  • safranine T