Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents
Supercritical gas foaming using CO₂ was used to fabricate blank poly DL lactide-co-glycolide (PLGA) micro-porous foams. Paclitaxel-loaded PLGA foams were also produced for the first time using a modification of the supercritical gas foaming technique whereby pacltitaxel-loaded PLGA microparticle pow...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2007
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| Online Access: | http://hdl.handle.net/1721.1/35874 |
| _version_ | 1826207752345616384 |
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| author | Lee, Lai Yeng Wang, Chi Hwa Smith, Kenneth A. |
| author_facet | Lee, Lai Yeng Wang, Chi Hwa Smith, Kenneth A. |
| author_sort | Lee, Lai Yeng |
| collection | MIT |
| description | Supercritical gas foaming using CO₂ was used to fabricate blank poly DL lactide-co-glycolide (PLGA) micro-porous foams. Paclitaxel-loaded PLGA foams were also produced for the first time using a modification of the supercritical gas foaming technique whereby pacltitaxel-loaded PLGA microparticle powders obtained from spray drying was foamed. In this study, it was found that using polymer powders, more compact foams and smaller pores foams may be achieved with lower saturation pressures and time which is due to the much higher surface area to volume ratio of the microparticle powders. Experiments were carried out with varying lactide to glycolide ratio of the copolymer PLGA and it was shown that the pore size, in vitro swelling behavior and drug release profiles may be altered by changing the copolymer composition used. The foams fabricated also have good mechanical strength which makes it suitable to be applied as an implantation material for the post-surgical controlled delivery of chemotherapeutic drugs. The residual organic solvent content of the paclitaxel-foams were well below the allowable limit set by the US Pharmacopeia as shown in the present study. The in vitro release profiles over a period of 5 weeks showed close to linear release. |
| first_indexed | 2024-09-23T13:54:24Z |
| format | Article |
| id | mit-1721.1/35874 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:54:24Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | mit-1721.1/358742019-04-13T00:09:08Z Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents Lee, Lai Yeng Wang, Chi Hwa Smith, Kenneth A. Supercritical Gas Foaming Technique Poly DL Lactide-Co-Glycolide (PLGA) Micro-porous Foams Controlled Release Paclitaxel Supercritical gas foaming using CO₂ was used to fabricate blank poly DL lactide-co-glycolide (PLGA) micro-porous foams. Paclitaxel-loaded PLGA foams were also produced for the first time using a modification of the supercritical gas foaming technique whereby pacltitaxel-loaded PLGA microparticle powders obtained from spray drying was foamed. In this study, it was found that using polymer powders, more compact foams and smaller pores foams may be achieved with lower saturation pressures and time which is due to the much higher surface area to volume ratio of the microparticle powders. Experiments were carried out with varying lactide to glycolide ratio of the copolymer PLGA and it was shown that the pore size, in vitro swelling behavior and drug release profiles may be altered by changing the copolymer composition used. The foams fabricated also have good mechanical strength which makes it suitable to be applied as an implantation material for the post-surgical controlled delivery of chemotherapeutic drugs. The residual organic solvent content of the paclitaxel-foams were well below the allowable limit set by the US Pharmacopeia as shown in the present study. The in vitro release profiles over a period of 5 weeks showed close to linear release. Singapore-MIT Alliance (SMA) 2007-02-06T12:00:00Z 2007-02-06T12:00:00Z 2007-01 Article http://hdl.handle.net/1721.1/35874 en Chemical and Pharmaceutical Engineering (CPE) application/pdf |
| spellingShingle | Supercritical Gas Foaming Technique Poly DL Lactide-Co-Glycolide (PLGA) Micro-porous Foams Controlled Release Paclitaxel Lee, Lai Yeng Wang, Chi Hwa Smith, Kenneth A. Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title | Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title_full | Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title_fullStr | Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title_full_unstemmed | Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title_short | Micro-porous Paclitaxel-Loaded PLGA Foams -- a New Implant Material for Controlled Release of Chemotherapeutic Agents |
| title_sort | micro porous paclitaxel loaded plga foams a new implant material for controlled release of chemotherapeutic agents |
| topic | Supercritical Gas Foaming Technique Poly DL Lactide-Co-Glycolide (PLGA) Micro-porous Foams Controlled Release Paclitaxel |
| url | http://hdl.handle.net/1721.1/35874 |
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