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Updated: Jun 22, 2026

Systemic and Local Drug Delivery for Treating Diseases of the Central Nervous System in Rodent Models
Published on: August 16, 2010
Novel drug delivery strategies in neuro-oncology
Dani S Bidros1, Michael A Vogelbaum
1Department of Neurological Surgery, Brain Tumor and NeuroOncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio, USA.
Abstract:
Treatment of malignant gliomas represents one of the most formidable challenges in oncology. Despite treatment with surgery, radiation therapy, and chemotherapy, the prognosis remains poor, particularly for glioblastoma, which has a median survival of 12 to 15 months. An important impediment to finding effective treatments for malignant gliomas is the presence of the blood brain barrier, which serves to prevent delivery of potentially active therapeutic compounds. Multiple efforts are focused on developing strategies to effectively deliver active drugs to brain tumor cells. Blood brain barrier disruption and convection-enhanced delivery have emerged as leading investigational delivery techniques for the treatment of malignant brain tumors. Clinical trials using these methods have been completed, with mixed results, and several more are being initiated. In this review, we describe the clinically available methods used to circumvent the blood brain barrier and summarize the results to date of ongoing and completed clinical trials.
Insights
Treating malignant gliomas is challenging due to the blood-brain barrier. This review explores methods like blood-brain barrier disruption and convection-enhanced delivery to improve drug delivery for brain tumors.
Area of Science:
- Neuro-oncology
- Drug Delivery Systems
- Cancer Therapeutics
Background:
- Malignant gliomas, including glioblastoma, have poor prognoses despite standard treatments.
- The blood-brain barrier (BBB) significantly impedes the delivery of therapeutic agents to brain tumors.
- Effective drug delivery to brain tumor cells remains a critical challenge in neuro-oncology.
Purpose of the Study:
- To review clinically available methods for circumventing the blood-brain barrier (BBB).
- To summarize the outcomes of clinical trials investigating novel drug delivery techniques for malignant brain tumors.
- To provide an overview of strategies aimed at enhancing therapeutic efficacy for brain cancers.
Main Methods:
- Description of established methods to bypass the blood-brain barrier.
- Summary of results from completed and ongoing clinical trials.
- Analysis of investigational delivery techniques such as BBB disruption and convection-enhanced delivery.
Main Results:
- Clinical trials using BBB disruption and convection-enhanced delivery have yielded mixed results.
- Ongoing trials are exploring further applications and refinements of these delivery methods.
- The efficacy of these techniques in improving patient outcomes is under continued investigation.
Conclusions:
- Circumventing the blood-brain barrier is crucial for effective malignant glioma treatment.
- Blood-brain barrier disruption and convection-enhanced delivery show promise but require further validation.
- Continued research and clinical trials are essential to optimize drug delivery strategies for brain tumors.
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