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Pulsatile drug release control using hydrogels.

Akihiko Kikuchi1, Teruo Okano

  • 1Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan.

Advanced Drug Delivery Reviews
|January 5, 2002
PubMed
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Researchers are developing advanced hydrogel drug delivery systems for pulsed release, mimicking natural bodily functions to improve therapeutic outcomes and reduce side effects. This research focuses on thermally responsive hydrogels and alginate beads for controlled drug delivery.

Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Polymer Chemistry

Background:

  • Pulsatile drug release is crucial for mimicking natural physiological processes and enhancing therapeutic efficacy.
  • Current drug delivery systems often lack the ability to achieve precise, on-demand drug release, leading to suboptimal treatment outcomes.
  • Developing systems that can deliver drugs in a pulsed or pulsatile manner is essential for improving patient care and minimizing side effects.

Purpose of the Study:

  • To explore and discuss various hydrogel-based drug delivery systems capable of pulsed and pulsatile drug release.
  • To highlight the importance of mimicking the body's natural transient release of bioactive substances.
  • To review advancements in thermally responsive hydrogels and modified alginate beads for controlled drug delivery.

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Main Methods:

  • Review of current research on hydrogel drug delivery systems exhibiting pulsed release characteristics.
  • Focus on thermally responsive poly(N-isopropylacrylamide) (PNIPAM) and its derivative hydrogels.
  • Investigation of modified alginate gel beads for pulsed drug delivery applications.

Main Results:

  • Hydrogels, particularly thermally responsive ones like PNIPAM, can be engineered for controlled pulsed drug release.
  • Micelles and specific hydrogel designs enable thermal stimuli-regulated pulsatile drug delivery.
  • Modified alginate gel beads demonstrate potential for pulsed drug delivery applications.

Conclusions:

  • Hydrogel-based systems offer promising avenues for achieving pulsed and pulsatile drug delivery, crucial for mimicking biological functions.
  • Thermally responsive hydrogels and modified alginate beads represent key advancements in designing effective drug delivery devices.
  • These controlled release strategies hold the potential to improve treatment efficacy and reduce adverse effects by delivering drugs precisely when and where needed.