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[Experimental study of an anticancer drug delivery system using polylactic acid]
Nihon Geka Gakkai Zasshi
|April 1, 1987
Summary
This study introduces a novel 5-fluorouracil (5-FU) and poly L-lactic acid (PLA) composite needle for sustained drug delivery. The F-PLA needle demonstrated effective tumor suppression and localized drug release, showing promise for cancer chemotherapy.
Area of Science:
- Biomedical Engineering
- Materials Science
- Oncology
Background:
- Biodegradable polymers offer potential for controlled drug release in cancer therapy.
- 5-fluorouracil (5-FU) is a widely used chemotherapeutic agent with limitations in delivery and systemic toxicity.
Purpose of the Study:
- To evaluate a novel drug delivery system (F-PLA needle) for sustained release of 5-FU.
- To assess the antitumor efficacy of the F-PLA needle in preclinical cancer models.
Main Methods:
- Fabrication of 5-FU loaded poly L-lactic acid (F-PLA) needles.
- In vivo evaluation of drug release kinetics in rat tissues (subcutaneous, liver, tumor).
- Assessment of antitumor effects and histological changes in rat models bearing ascites hepatomas (AH 109A, AH 130).
Main Results:
- Sustained release of 5-FU from F-PLA needles for over one month in subcutaneous tissue and approximately two weeks in liver/tumor.
- High 5-FU concentrations achieved in target tumor tissues with minimal systemic drug levels.
- Significant tumor growth suppression and observed necrosis in treated tumor tissues.
Conclusions:
- The F-PLA needle serves as an effective drug delivery system for sustained 5-FU release.
- This localized delivery approach shows significant potential for improving cancer chemotherapy outcomes.
- The F-PLA needle represents a promising strategy for localized cancer treatment.