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Polymeric microspheres as drug carriers.

S S Davis1, L Illum

  • 1Department of Pharmacy, University of Nottingham, UK.

Biomaterials
|January 1, 1988
PubMed
Summary

Polymeric microspheres offer versatile drug delivery. Surface properties control particle fate, enabling targeted delivery to specific organs like the lung or liver.

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Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Nanotechnology

Background:

  • Polymeric microspheres are utilized for drug delivery via various routes, especially parenteral administration.
  • Microsphere formulation is critical, with surface properties significantly influencing the behavior of administered particles within the body.

Purpose of the Study:

  • To explore the application of polymeric microsphere systems for drug delivery.
  • To investigate how surface properties of microspheres affect their biodistribution and interaction with biological systems.

Main Methods:

  • Discussing microsphere formulation, focusing on surface characteristics.
  • Examining the impact of adsorbed block copolymers on opsonization (protein uptake) and macrophage interaction (cell-particle adhesion).

Main Results:

  • Adsorbed block copolymers can modify protein uptake and cell adhesion processes.
  • Selection of appropriate coating materials allows for targeted delivery to specific organs (lung, liver, bone marrow) or prolonged circulation.

Conclusions:

  • Surface modification of polymeric microspheres is a key strategy for controlling drug delivery and biodistribution.
  • Tailoring microsphere surface properties enables precise targeting within the body, enhancing therapeutic efficacy.

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