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Published on: February 9, 2019
Indomethacin-5-fluorouracil-methyl ester dry emulsion: a potential oral delivery system for 5-fluorouracil
Jing Wang1, Yanchen Hu, Ling Li
1School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province, PR China. Wang-jing6312@163.com
Objective:
To produce a combined effect of indomethacin (IDM) and 5-fluorouracil (5FU) for cancer therapy, the side effects of IDM on the gastrointestinal (GI) tract were reduced and the oral adsorption of 5FU was improved. Indomethacin-5-fluorouracil-methyl ester (IFM) dry emulsion was prepared and evaluated as a potential oral delivery system for 5FU.
Methods:
IFM was synthesized by formation of an ester between IDM and 5FU intermediate and then characterized by structure, melting point, solubility, apparent partition coefficient, and incubation with GI tract contents and plasma. Gum acacia and sodium carboxymethyl cellulose (CMC-Na) were applied as the adsorbent and solid carrier to prepare IFM dry emulsion. IFM dry emulsion was then characterized by reconstitution in water and in situ intestinal perfusion experiment.
Results:
Physicochemical properties of the new synthesized compound confirmed the formation of IFM. Incubation of IFM in the contents of the GI tract and plasma revealed that IFM was not relatively stable in GI contents during the time period of transit through the GI tract, whereas it was very unstable in plasma and released 5FU rapidly. The IFM dry emulsion could be easily reconstituted in water, and the mean particle size was 2.416 microm. The absorption rate constant (K) for IFM with concentration of 2, 5, and 10 microg/mL in the in situ perfusion experiment were 0.473, 0.423, and 0.433/h, respectively, demonstrating passive diffusion of IFM across the biological membranes.
Conclusion:
This study indicates that the IFM dry emulsion may represent a potentially useful oral delivery system for 5FU.
Insights
A novel Indomethacin-5-fluorouracil-methyl ester (IFM) dry emulsion was developed to improve oral cancer therapy. This formulation aims to reduce indomethacin
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Cancer Therapy
Background:
- Indomethacin (IDM) and 5-fluorouracil (5FU) combination therapy shows promise for cancer treatment.
- Challenges include IDM's gastrointestinal side effects and 5FU's poor oral absorption.
Purpose of the Study:
- To develop an Indomethacin-5-fluorouracil-methyl ester (IFM) dry emulsion for enhanced oral delivery.
- To mitigate IDM's GI toxicity and improve 5FU's oral bioavailability.
Main Methods:
- Synthesis and characterization of IFM, including physicochemical properties.
- Preparation of IFM dry emulsion using gum acacia and sodium carboxymethyl cellulose.
- Evaluation of IFM dry emulsion via reconstitution and in situ intestinal perfusion.
Main Results:
- Successful synthesis and characterization of IFM confirmed its formation.
- IFM dry emulsion showed good reconstitution properties with a mean particle size of 2.416 microm.
- In situ perfusion studies indicated passive diffusion of IFM, with absorption rate constants suggesting potential for oral delivery.
Conclusions:
- The developed IFM dry emulsion shows potential as an oral delivery system for 5FU.
- This formulation may offer a strategy to improve cancer therapy by combining IDM and 5FU effectively.
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