Related Experiment Video
Updated: Dec 20, 2025
06:40
Insertion of Flexible Neural Probes Using Rigid Stiffeners Attached with Biodissolvable Adhesive
Published on: September 27, 2013
15.2K
Resveratrol Delivery from Implanted Cyclodextrin Polymers Provides Sustained Antioxidant Effect on Implanted Neural
Rebecca M Haley1, Sean T Zuckerman2, Hassan Dakhlallah3
1Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
International Journal of Molecular Sciences
|May 23, 2020
Summary
This study introduces a novel polymer cyclodextrin (pCD) system for local delivery of resveratrol, an antioxidant, to improve neural electrode performance. Local delivery showed sustained release and higher concentrations at the implantation site compared to systemic methods.
Area of Science:
- Biomaterials Science
- Neuroscience
- Drug Delivery Systems
Background:
- Intracortical microelectrodes are crucial for neurological research and treatment.
- Signal degradation of neural electrodes is often caused by post-implantation oxidative stress and inflammation.
- Resveratrol, a natural antioxidant, offers neuroprotection by reducing oxidative stress.
Purpose of the Study:
- To compare systemic resveratrol delivery with a novel local delivery approach using a cyclodextrin polymer (pCD).
- To evaluate the in vitro and in vivo efficacy of the pCD system for sustained resveratrol release and antioxidant activity.
- To assess the impact of local vs. systemic delivery on resveratrol concentration at the intracortical probe site.
Main Methods:
- Development and characterization of a resveratrol-loaded cyclodextrin polymer (pCD) system.
- In vitro assessment of resveratrol release kinetics and free radical scavenging activity.
- In vivo evaluation of the pCD system in a rodent model, comparing local delivery to systemic administration.
- Quantification of resveratrol metabolites at the intracortical probe implantation site.
Main Results:
- The pCD system demonstrated extended resveratrol release for up to 100 days in vitro and sustained release in vivo for 7 days.
- In vitro studies showed 60 days of free radical scavenging activity.
- In vivo studies revealed significantly higher concentrations of resveratrol metabolites at the intracortical probe site with pCD delivery compared to systemic administration.
- The pCD system successfully delivered resveratrol to the brain.
Conclusions:
- Local delivery of resveratrol using a pCD system offers a promising strategy for sustained drug release.
- This approach can achieve higher concentrations of resveratrol at the neural interface site.
- The findings support the potential of pCD-mediated resveratrol delivery to enhance the stability and longevity of neural interfacing applications.
