Antioxidative nanofullerol prevents intervertebral disk degeneration.

Area of Science:

• Biomaterials Science
• Cell Biology
• Orthopedics

Background:

• Reactive oxygen species (ROS) are implicated in intervertebral disk degeneration.
• Fullerol nanoparticles possess potent ROS-scavenging capabilities.

Purpose of the Study:

• To evaluate the efficacy of fullerol in preventing disk degeneration using in vitro and in vivo models.
• To investigate fullerol's protective effects against oxidative stress and inflammation in nucleus pulposus cells.

Main Methods:

• In vitro: Human nucleus pulposus cells treated with H2O2 or IL-1β, with and without fullerol.
• In vivo: Rabbit annulus-puncture model with intradiskal fullerol injection.
• Assays: Cytotoxicity, ROS levels, nitric oxide generation, gene expression, biochemical analysis, and histological evaluation.

Main Results:

• Fullerol significantly reduced H2O2-induced cytotoxicity and ROS levels in cells.
• Fullerol suppressed IL-1β-induced nitric oxide generation and reversed matrix degradation.
• In vivo, fullerol injection prevented disk degeneration, increased water and proteoglycan content, and inhibited ectopic bone formation.

Conclusions:

• Antioxidative fullerol demonstrates significant therapeutic potential for preventing and treating intervertebral disk degeneration.
• Fullerol's ability to scavenge ROS and mitigate inflammatory responses is key to its protective effects.
• Further research into fullerol as a treatment for disk degeneration is warranted.