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Biodegradable microspheres for parenteral delivery.

V R Sinha1, A Trehan

  • 1University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India. vr_sinha@yahoo.com

Critical Reviews in Therapeutic Drug Carrier Systems
|March 29, 2006
PubMed
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Controlled release parenteral formulations using biodegradable microspheres offer superior drug delivery over oral or transdermal routes. This technology enables tailored drug release over extended periods, overcoming limitations of other methods.

Area of Science:

  • Pharmaceutical Sciences
  • Biomaterials Engineering
  • Drug Delivery Systems

Background:

  • Traditional drug delivery routes like oral, transdermal, ocular, and nasal have limitations including variable bioavailability and degradation.
  • Parenteral administration is often preferred for challenging drug molecules, but requires advanced formulation strategies for sustained release.

Purpose of the Study:

  • To review the application of biodegradable microspheres for parenteral controlled-release drug delivery.
  • To highlight the advantages of microsphere technology over other controlled-release systems.

Main Methods:

  • Review of existing literature on parenteral controlled-release formulations.
  • Analysis of limitations associated with liposomes, emulsions, and suspensions.
  • Focus on biodegradable microsphere technology for drug encapsulation and release.

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Main Results:

  • Biodegradable microspheres provide a viable platform for long-term parenteral drug delivery, enabling controlled release over days to months.
  • Microsphere formulations overcome stability and release rate limitations of liposomes and emulsions.
  • Several FDA-approved parenteral controlled-release products utilize biodegradable microsphere technology.

Conclusions:

  • Biodegradable microspheres represent a significant advancement in parenteral drug delivery, offering predictable and tunable drug release profiles.
  • This technology enhances therapeutic efficacy and patient compliance for various drug molecules.
  • Further development in microsphere-based formulations promises to expand treatment options for numerous diseases.